DE2820844A1 - METHOD AND DEVICE FOR THERMAL DEGASSING OF WATER, IN PARTICULAR OF BOILER FEED WATER, ETC. - Google Patents

Description

DIPL. CHEM. DR. PETER FÜRNISS PATENT LAWYERS

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BAD ORIGINAL 9 0 9 6 U 6/0 k 0 6

Office: Hermstralse 15, Munich 32

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METHOD AND DEVICE FOR THERMAL DEGASSING OF WATER, IN PARTICULAR OF BOILER FEED WATER AND THE LIKE

The invention relates to a method and a device for thermal degassing of water, in particular of boiler feed water and the like.

In the operation of steam generating devices such as boilers, etc., the prevention of corrosion forms one basic requirement, which in turn requires degassing of the feed water. This is usually done by means of various thermal degassers carried out, the

909846/0406

are mostly used in combination with one another , known as cascade devices with sprinkler

\ Plates, boiling or Hot Geyser Spring Zerstäuberanlagen or plants with Raschig rings are formed.

With the cascade devices, the water trickles from above under the action of gravity in a cylindrical shape Upright housing over plates downwards, with the heating steam from below in countercurrent upwards flows and warms the water droplets. However, these facilities require spacious structures because the ihj heating tower denotes the The food container towers above it by several meters, making the interior height of the receiving halls very large and the Standing costs increase considerably. By the way, in cascade devices, a water with an oxygen content of 100 u / kg to the extent that the oxygen content up to below 10 / Ug / kg if airtight condensers and degassed substitute feed water are used. The efficiency of the device is also very much impaired by the gas load on the degasser. at In waters with several thousand / Ug / kg content of oxygen, the achievable oxygen content is between 25 and 10 / Ug / 1 fluctuate.

The sparkling process itself is rarely used and usually switched on as a second stage serving to that of a first cascade or atomization stage reached oxygen levels of 20 to 50 yug / kg below 10 / Ug / kg. It is not advisable to use this stage on its own because the vapor bubbles are present

B0S846? 0 ~ A06

the formation of bubbles are saturated with oxygen, so that the transition of the hydrogen contained in the water in the vapor bubbles themselves go a long way only at low efficiencies. On the other hand, there is here a relatively small space requirement.

In atomizer systems, the water in the degassing room is atomized by means of nozzles, with the dissolved gases then with corresponding values of pressure and temperature escape relatively quickly over the enlarged water surface.

However, the achievable oxygen content is at most 50 to 100 / ug, because that prevailing within the particles Pressure is greater than the saturation pressure, which corresponds to the temperature here, which has an impact on the surface tension which in turn depends on the size of the atomized particles. So the Gases back in the solution according to the pressures and temperatures inside the water droplets. In addition, the heating steam is condensed on the surface of the water droplets, which is caused by the condensate formed film must be broken through by the gas particles, which again takes time. That's why The atomization degassing is only effective as a preliminary stage and only suitable for the initial high gas content within a comparatively short time to a proportionately decrease in value, which is still higher than the intended value.

The procedure using Raschig rings is

a first stage is also used, namely instead of

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le of the cascade method. There will be a decrease the overall height of the degassing device is intended, for which purpose a layer consisting of rings is provided, the rings of which made of iron, ceramic or plastic and increase the specific water surface Raschig rings, the water travels relatively long distances in the form of thin films, while the gas particles escape by means of diffusion. The iron rings but are destroyed relatively quickly by rusting, whereby the flow cross-sections can be narrowed and possibly also clogged. In the case of rings made of porcelain or plastic, on the other hand, there is no advantage that The oxygen traces are consumed by an oxidation of the filling consisting of iron rings. Constipation

1 & only occur when there are suspended solids in the water

available. The space requirement is also relatively large in devices with Raschig rings, although the dimensions are smaller than in cascade devices. The thermal degassing process described above drives are usually used in combination. Usually a sequence is assumed in which degassing is first carried out by atomizing and bubbling. It follows degassing by means of sprinkling and bubbling. Then comes a stage with sprinkling and Raschig rings or Sparkling water (after boiling). Finally, atomization and sprinkling take place. Although through these combinations the Effectiveness of degassing can be increased more or less has not succeeded so far, the various

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To completely remedy inadequacies in the individual types of procedure.

The removal of dissolved gases is not only an important requirement for boiler feed water, but also for the production of all kinds of hot water for consumption, although this is usually not sufficiently taken into account. If, for example, dissolved gases get into a device or the distribution network with the domestic hot water, they have a corrosive effect when they come into contact with steel components. This risk is even higher above a temperature of 65 ^° C. and at high gas contents. When using surface heat exchangers, a considerable formation of scale must be expected. Although in certain cases water treatment or softening, which is mandatory for boiler feed water, is also carried out for domestic hot water in certain cases, untreated raw water is mostly used, which, due to scale deposits, entails frequent cleaning or frequent replacement of the heat exchangers in an undesirable manner brings.

The object of the invention is to remedy the shortcomings of the known degassing processes and to secure their advantages in such a way that with a minimum space requirement and with a maximum utilization dee Steam an optimal degassing is achieved, with consumption hot water also from untreated (not hardened) It should be possible to generate water. The positive effect of the gases excreted during heating, as well as a storage

9Q984S / Q406

The aim is to eliminate scaling in surface heat exchangers will.

The invention is based on the following knowledge: If the heating steam is fed into a pipe on the right from below via Laval nozzles, there is also a change of state in the form of an adiabatic expansion, with a negative pressure being created in the area of the nozzles. This negative pressure can force the water to rise. In addition, a combined degassing is achieved as a result of the negative pressure in a suction pipe, in that the passage of dissolved gases into the vapor bubbles is optimal at the negative pressure: the carbon dioxide and oxygen will easily escape from the water and can diffuse into the neighboring vapor bubbles. The advantageous effect of the temperatures above 100 ° C _f caused by the vapor pressure remains effective even after the negative pressure has ceased, as the water surrounding the vapor bubbles begins to boil and the surface tension becomes negative, which again causes gas particles to diffuse in. This process is promoted by the negative pressure.

One of the most effective degassing options is the bubbling process. Apart from the effect of the negative pressure, the process described above essentially takes place on a bubble plate. The surface liquid layer does not have to be broken through by the gas particles, but by the combined gas and vapor bubbles. De better the steam distribution on the bubble plate,

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the more effective the suction effect of the aforementioned negative surface tension.

With regard to the steam yield, it is very advantageous to combine the effervescence method and the atomization method in such a way that the atomization of the effervescent method escaping secondary or possibly tertiary steam is used. When the temperature of the water reaches the Saturation temperature or approaches the same, as a result of the contact on the one hand with the heating steam of the degasser upstream preheater, on the other hand of the degasser, so most of the gases dissolved in the water escape like oxygen and carbon dioxide at the saturation temperature corresponding to the pressure.

On the basis of this knowledge, the task set is achieved within the meaning of the invention by a method, in which at least one degassing stage is used as a post-boiling stage is carried out, with at least one preliminary stage already degassed water at negative pressure to rise imd thereby to an intimate mixing with the Steam is forced. The partially degassed water is expediently taken from several preliminary stages. The negative pressure is expediently generated by supplying primary steam and its adiabatic expansion.

The optimal yield of the supplied steam and maximum degassing can be achieved in that the post-boiling stage is subdivided in such a way that the forced to rise in the case of negative pressure and with gas mixed water directed downwards, then at negative pressure

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is brought back to the upward flow, these measures being expediently carried out several times in succession will. The negative pressure is also generated by supplying steam, expediently primary steam and its adiabatic expansion. It is useful to have one under split reboiling stage with primary steam and the exiting secondary gas in a second stage Feed the bubble plate and mix the tertiary steam escaping from here with a water that flows through

Atomization supplied and by preheating and possibly

Softening has been prepared. The degassing stage with Atomization can form the first stage.

A fourth or backup stage can be provided in the form of a food container. The food container is provided with a system for keeping warm, which works with direct steam supply and which is quick and easy Heating up when starting is used. This system can of course not only be used for heating, but also as a function of the the duration of the steam supply also to the subsequent Serve degassing at fairly good efficiency. It is it is also possible to use the system to correct any shortcomings of the previous degassing stages, with a dynamic one formed in the feed tank Steam cushion is formed. This immediate steam too The guide through a nozzle into the feed container forms the fourth or rating level.

The device for carrying out the method essentially consists of an outer tube closed at the bottom and

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an inner tube coaxially spaced with this, which ends above the sealing plate of the outer tube, as well as a reaction ascending tube which opens into the lower end of the inner tube and consists of a steam supply nozzle, the upper area of the outer tube being connected to a water source which has already been partially degassed in a pre-cleaning stage. The device expediently has several and advantageously four reaction riser pipes, of which in the direction of the water flow the first is connected with its outer pipe at the top to an overflow funnel which rests in the degassed water source. The inner tube of the in the last downstream reaction riser opens it directly or indirectly in a Speisewasserbehalter or a container for consumption of hot water or the like. The inner tubes of the penultimate reaction risers are so connected to the water side in R _e ihe that they are each in the upper portion of the outer tube of the following reaction riser pipe opens out in the order «

The reaction risers, the bubble plate used as the second stage, and one for the atomization stage Dome provided can form a structural unit and be designed as a degasser cartridge ", which is either in the boiler or the container for domestic hot water can be installed or arranged outside of the same. In the first case, the reaction risers reach below the water level in the food container, or the like. In this

In this case, it is very advantageous to provide an opening in the lower area of the outer pipe of the first reaction riser, advantageously at the level of the Laval nozzle, expediently a series of bores which ensure continuous water circulation in the feed water tank when the feed water supply is interrupted. With such a design, the heating steam of the degasser prevents the device from undercooling if the feedwater supply fails to come from any Gpund, with water flowing from the feedwater tank into the first reaction riser pipe under the suction effect of the steam, so that circulation also occurs in the other reaction riser pipes. Thus, the upward bubbling steam again ensures continuous intensive degassing, keeping warm, as well as preventing a gas pressure flow under suction. In addition, the constant supply of steam ensures that the desired temperature is maintained in all three stages, as well as preventing the entry of air due to suction.

For lower requirements, where, for example, the content of oxygen or carbon dioxide may be 50 to 100 gr / kg , a device can also be used in which a bubbling plate serving as a second degassing stage is provided, which is arranged in an expediently upright cylinder- shaped space Reu * is subdivided into an upper and a lower part of the room, whereby the bubble plate is expediently fed with primary steam. The hot tub is divided into compartments marked with *

reverse each other and subdivide the second degassing stage into sub-stages. The innermost compartment is connected from above a collecting funnel or the like. Which is attached in the upper space part formed as a first degassing stage, which is used to supply the by means of atomization supplied water in contact with the expediently secondary steam escaping from the second bubble stage bring. In an outer compartment of the bubble plate, an overflow pipe or the like is arranged, which is in the extends lower part of the room, from here an overflow pipe protrudes downwards, with its upper edge above whose mentioned lower part of the space closing floor plate is attached and in this way a water-side Forms water seal. The upper run pipe opens into one Feed water tank or in a tank for consumption hot water or the like. The lower edge of this second overflow pipe expediently extends below the water level of the feed water tank or the like (September 20, 1975). The invention has in relation to the known

Prior art has numerous advantages.

With regard to the mode of operation, there is an essential advantage that the existing negative pressure and the corresponding temperature occur at the same time lead to optimal degassing, with the negative pressure is also used for moving the water, namely for its upward circulation optimal steam yield, the supplied primary steam

$ 09846 / 0408-11 -

can still be used as tertiary steam in the first stage. The device can choose between wide performance limits come into use. It is particularly important for low and medium-sized outputs or boiler pressures effective. The heat output can be changed by changing the nozzle without any further measures. The degassing can be done in the third stage can be promoted by increasing the number of stages. The method according to the invention or the corresponding one Devices are insensitive to changes in pressure, whereby the steam supply can also be regulated by simple pressure reducers.

Regarding the construction is the invention Device also very advantageous because their space requirements and their overall height are very low, with them even in one Feed water tank or can be installed in a tank for domestic hot water. The inventive Device forms a structural unit, as it were a "degasser cartridge", which through a manhole into the corresponding container can be inserted and attached to its pool · There are none inside the container cumbersome internal assembly or welding work required. > · The degasser cartridge can be used in a ready »existing Food containers without degasser operating at atmospheric pressure work during a very short break in operation. It can be made from common materials and is characterized by its low weight and low cost because it is easy to manufacture and sebet made in workshops less willing

* ■ (Mr *

can be.

If it is a question of the production of hot water for consumption, the invention also has significant advantages. Since to heat the water instead of a surface heat exchanger, a heat exchange through direct con. clock is used, in addition to degassing, ie when preventing corrosive effects, water is also softened, because the heat transfer surfaces are formed by steam or water, so that Waeseretein cannot deposit anywhere. A mixing condenser, direct steam injection, a cascade system or a counterflow system between the liquid film and the steam are used. The precipitate that occurs in each case can be removed in the form of sludge. Ee is not required to use pretreated water, which can save operating costs. With the degassing cartridge according to the invention, heating and degassing can be carried out simultaneously in the same device. Because of the warming, a thermal softening takes place in the storage tank, ie in the feed water tank or in the tank for consumption hot water under the effect of the direct steam supply, whereby the quality of the consumption hot water is promoted. Dje application of erfindungsgemißen Entgaaerpatronen leaves due to the already mentioned advantageous properties of the construction, of course, also in the creation of consumer hot water operation low specific Dampfver brauohea to.

90S84S / 040 «

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The invention is explained in more detail below using exemplary embodiments based on the drawings.

Fig. 1 is a vertical section of a boiler recirculation water tank with a degassing device according to the invention.

Fig. 2 shows the degassing device in an enlarged . tem scale.

3 shows a section along the line A-A of FIG Fig. 1 is also on an enlarged scale.

^Fi 9 · ⁴ shows _{a family of} curves from which the .Sauerstofflöslichkeit emerges as a function of pressure and temperature.

Fig. 5 is a top plan view of the effervescent plate of a - further execution examples.

Fig. 6 shows a section according to the line F-F of Fig. 5 shows on an enlarged scale.

Fig. 7 is a vertical section of another embodiment of the device according to the invention. Rig 8. shows a section along the line BtB of FIG. 7.

FIG. 9 is a section along the line CC tier FIG. 7, with certain parts being shown broken for the sake of clarity.

10 shows a section along the line D * D Fig. 7 shows »

Fig. 11 is a plan view of an upper hot tub.

•. ι

te as shown in FIG.

Fig. 12 shows a view of a detail from fig The direction of arrow G of FIG. 11 is seen here.

84 € / 0406

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282Q844

FIG. 13 is a detail view in the direction of arrow H of FIG. 11.

FIG. 14 is a view seen from the direction of arrow I in FIG. 11.

Fig. 15 is a plan view of another embodiment the lower bubble plate according to FIG. 9.

16 shows a side view of a device for generating domestic hot water, which is equipped with a degasser cartridge according to Fig. 1 to 6 is equipped. Rg. 17 to 20 represent different embodiments of containers which are provided with degasser cartridges according to FIGS. 1 to 6 and 7 to 15, respectively.

The same reference symbols in the various figures indicate similar details.

. As can be seen from the drawing, the reference number 1 in FIG. 1 indicates a feed water container in which a water level ν is established. A dome 2 is provided at one end of the feed water tank 1 and a manhole 3 is provided at the other end. A degassing device 4 according to the invention is attached in the dome 2. The manhole 3 is closed off by a plate 3a and secures access to the interior of the container, for example for monitoring purposes. With 5 connecting flanges are designated. Dash-dotted lines 6 represent fastening screws. For the reasons explained below, the Do * 2 is attached to the feed water tank 1 by means of two flanges.

Inside the Speisewaseerbehältera nearby. a steam line 7 is located on its base plate

909846 / JHOe

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joined by nozzles 8. The degassed boiler feed water leaves the degassing device according to the invention via a pipe socket 9, the direction of flow being with a dashed arrow 3 is indicated. In the feed water tank 1, a slow circulation occurs, such as this is also indicated by arrows a and below will be discussed in more detail.

In the vertical section, according to FIG. 2, the dome 2 is shown on an enlarged scale. The degassing device 4 according to the invention also appears is attached in the dome 2 or forms a downward continuation of the same

The upper part of the dome 2 consists of a Entgaeungsolocke 10 and its lower part of a nozzle A cylindrical intermediate piece 12 is attached between these two beetand parts. The listed Parts are detachably connected to one another by means of flanges 5 and fastening screws 6. The degassing bell 10 . has eyelets 13 with holes 13a, by means of which it can be lifted

The degassing device 4 is equipped with a pot-like bubble plate 14 and, by means of its circumferential edge 14a, between the nozzle 11 and the flanges 5 the intermediate link 12 by means of fastening covers 6 attached. There are reactions on the bubble plate 14 Dough pipes 16, 16, 17 and 18 attached, each of which, aue consists of an outer tube and an inner tube passing through

Supplementary letters a or b of the respective references

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mern 15 to 18 are different from each other. The outer pipe 15a of the reaction riser pipe 15 is passed through a base plate 19 of the bubble plate 14 and ends at the top in an overflow funnel 20, while the outer pipe 15a has a number of bores 21 at the bottom. The determination of the bores 21 will be explained below. The upper opening of the reaction riser tubes 16 and 17 adjoins the base plate 19 of the bubble plate 14 from below. At this point of the bubble plate 14 perforations are formed, to which pipes 22 connect, which open into a steam supply pipe 18, which will be described in detail below, it should be noted that the reaction riser pipes 15 to 18 are actually not aligned. The aligned position has only been selected for the sake of clarity. The actual arrangement of the reaction riser tubes 15 to "J8 should correspond to FIG. 3.

The lower ends of the inner tubes 15b to 18b terminate in the lower region of the outer tubes 15a to 15b, while their upper ends, with the exception of the last inner tube, open into the upper region of the adjacent reaction riser tubes. This means in detail that the inner pipe 15b in the outer pipe 16a, the inner pipe 16b in the outer pipe 17 ', and the inner pipe 17b in the outer pipe 18a

t6 empties. The inner tube 18b opens in the interior of the storage sewasserbehältere 1 above the water level ν and is by means of flanges 5 and screws 6 is connected to the aforementioned pipe socket 9, as from

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from the drawing

The lower ends of the outer tubes 16a are faie 18a each 4uroh a base plate 13 completed. By these floor slabs or tubes 24a led through, S which form a © fitting of the Roaktions riser pipes and in Steam-supplying nozzle 24 ends. The nozzles 24 are in the Innon tubes 16b to 18b, or designed as "Laval" nozzles and provide a buoyancy force by creating a negative pressure in the mixing rooms 27 of the reaction dough tube. gen «The tubes 24a are advantageously by means of Flanges 6 and fixing screws 6 aft a distribution pipe 26 is connected, opens in de "a Dampfzuföhrungsrohr 26th The DampfzufÖhrungerohr 26 also consists of two parts 26a and 26b ₄ which also means Flanges 6 and fastening screws 6 are detachably connected to each other · The lower part 26a of the Dampfzuföhrungerohree 26 is on the bubble plate 14, while its upper Part 26b attached to the cylindrical intermediate piece 12 of the dome 2

In the bubbling plate 14, advantageously directly above the base plate 19, an annular, perforated steam supply pipe 28 is brought in for supplying bubbling steam. The perforations in the steam supply pipe 28 and designated by 28c. The steam supply pipe 28 is Connected via a pipe 29 to the interior of the 8p * eisewasserbehältere 1 and expediently made of stainless quality steel to ensure that the dimensions of the Perforations 28a remain permanently unchanged.

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As can be seen from Fig. 2, form the bubble plate 14, reaction riser pipes 15 to 18, the steam supply pipe 26 and the steam distribution pipe 25, as well as the annular steam supply pipe 28 a structural unit, so that after removal of the dome part 10 and the dome 12 can be excavated or inserted as a single piece and form a compact "degasser cartridge". Of the Most of the cartridge protrudes into the interior of the feed water container 1, so that the height of the degassing bell 10 can be relatively low.

A water feed line protrudes into the upper neck part 10a of the degassing bell 10. 30 a about which fresh Replacement water or condensate water can be supplied to the device · Primary steam (live steam) is supplied via a pipe 31 fed. The pipe 31 can be connected to the upper section 26b of the steam supply pipe 26 by means of flanges 5 and fastening screws 6 via a pipe socket 32 the gas is hijacked or the exhaust-like evaporation occurs. To that located in the degassing bell 10 The end of the water feed line .30 is followed by an atomizer head 33.

The device according to FIG. 2 works as follows: The water to be degassed is in the direction of the dashed arrow £ over the water feed pipe 30 below

Pressure supplied to the upper part of the degassing bell 10

and atomized there by means of the atomizer head 33. Obri «» gene is the flow path of the water in the entire system with dashed arrows j [indicated, while the steam «

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away by continuous arrows t> is indicated. The atomized water falls on the surface of the water forming a water seal V in the bubble plate 14 down, after which it over the overflow funnel 20 and the outer tube 15a of the reaction riser 15 down flows.

Via the line 31, primary steam is fed into the steam supply pipe 26 in the direction of the arrow b where the steam via the steam distribution pipe 25 to the nozzles 24 flows. In the mixing space 27 of the reaction riser 15 ent As a result of the ejector effect already mentioned, there is a negative pressure, whereby the water mixes with the primary steam and the buoyancy forces the mixture via the inner tube 15b can flow upwards. After connecting the inner pipe 15b to the outer pipe 16a of the subsequent reaction riser pipe 16, the water in the outer pipe 16a flows downwards, wherein the steam is separated and via the opening in the base plate 19, and as secondary steam via the pipe 22 the annular steam supply pipe 2 $ flows and from then on mixes with the water on the bubble plate 14. The same process takes place in the others three reaction risers 16 to 18. Oies means that the water flows through four stages connected in series, where it comes into contact with fresh steam reaches until finally from the reaction dough pipe 18 into the The inside of the feed water tank 1 enters while a series connection is provided on the water side, there is a parallel connection on the steam side

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Here will be described in detail which significant Vorteile'durch the Waösörförderling'bei "'.■'erreicht'werden vacuum in terms of degassing ^J As is known, '*', the Wasserrö ^changes: solubility of the" oxygen as a function of ' · Temperature ^1! and D _r piece. Like from Pig. 4 shows / is the "amount of oxygen dissolving in water at the same temperature under negative pressure less than ³ at atmospheric ^{high 'or;} " this outstanding pressure. An underpressure degassing is usually then

TO used when the feed pumps are not operating with hot water can be. The known vacuum degassers are operated at "one" pressure before »0.8 to 0.9 At.

In the ReäktiXMi riser pipes 15 to 18, when the steam supplied via the "Laval" nozzles flows out into the inner pipes 15b to 18b, which work as'Spügrohr'e, a change of state also occurs in the form of an adiabatic "expansion, with the" Laval * - Nozzles a negative pressure arises, which causes a circulation of the water in the reaction riser pipes · 'A combined and hitherto unknown degassing effect arises on the action of temperature and pressure in the inner pipes' 15b to 18b. The negative pressure caused by a wird'nämlich durOh adiabatic expansion induced change of state, so that next to the negative pressure previously quite also the pressure of the steam corresponding zugefDhrten temperature above 100 ⁰ C at the same time. When flowing into the inner pipes working all suction pipe, the degassing process is influenced extremely advantageously. The gas kicks in

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OWGiNAL INSPECTED

under the effect of the negative pressure under optimal conditions into the supplied vapor bubbles. In addition, the heat effect is when the water exits as a suction pipe working inner pipes at the cessation of the negative pressure due to the presence of steam unchanged effective, whereby a Part of the content of oxygen and carbon dioxide excretes from the water.

The passage of the secondary steam escaping from the reaction risers through the water layer in the The bubble plate 14 is very effective because the the water layer surrounding the vapor bubbles is brought to the boil, so that the surface tension becomes negative, whereby facilitates the diffusion of the gas particles and thus the gas separation is promoted · The gas bubbles separate out of the heated water and diffuse into the rising steam bubbles advantageous that the liquid layer does not have to be broken through by the gas bubbles, but by the combined vapor and rock particles

The one taking place in the reaction risers

The physical process can be compared with the Cassprudel or post-boiling process "with the difference that in the case of the reaction riser pipes the process takes place in a closed space" namely in the pipe, where there is also a negative pressure in the area of the connection point of the DQee is present, which only gradually ceases. So, "ii, t diffuse the oxygen and Kohlendioxydga" e aue dap under negative pressure water even easier am · inttn-

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siver in the vapor bubbles over al? with open reboiling or soda plates

There is also water vapor coming from the steam supply pipe 7 in the feed water tank 1. via the nozzles 8 into the Water and exits from here into the space above the water level ν passes through the pipe 29 into the ring-shaped Steam supply pipe 28, through the perforations of which it is then used as secondary steam to the one located on the bubble plate 14 Water flows in. Finally, the secondary steam, which has bubbled through the water layer on the bubble plate 14, mixes in the sense of the above Versions turn part is driven out of the reaction riser pipes and part of the feed water tank 1, as a tertiary steam with the water emerging from the atomizer-IS nozzles 33 and escapes through the pipe in the nearby areas.

If the filling of the feed water tank 1 is interrupted, or in the case of periodic operation, the continuity of the operation of the device must be ensured, since a considerable additional amount of energy would be required for a new start. the Entgaserpatrone receives the Waesernachschub via the holes on the outer tube 16 in the lower region of the. reaction riser 15 from dam Speieewaaserbehälter itself. in this case, the Waseer is held within the system in circulation, eo that the continuity of operation is assured under all UmttÄnden. As a result of structural training

of the device are when switching from external supply no fittings, switches, etc. required on internal supply. As long as the power is supplied from the outside a water column effective, the height of which corresponds to the water level V in the bubble plate 14. Thus, the liquid in the feed water tank 1 cannot pass through the bores 21 penetrate into the reaction riser 15 because there is a pressure that corresponds to a column of water that is higher than the water level v. If, on the other hand, from the upper reaches funnel 20 no water flows, the water column effective, which corresponds to the water level \ / The changeover to internal feed is therefore completely automatic

An apparatus having the operation described above

includes the following four stages I to IV for degassing:

Stage I - an atomization stage. - Runs in the degassing bell 10, where atomized water with a content of, for example, 8000 g / l oxygen is mixed with tertiary steam, its oxygen content being reduced to about 150 g / l sinks as the atomized water touches the surface (the water level v_) of the water in the bubble plate 14 reached. In the second stage II there is boiling or boiling.

Bubbling on the bubble plate 14. The oxygen content of the

Water is fed into the water by the secondary steam that is fed into the water via the annular Daiiipfzuführungsrohr 28, lowered to about 50 g / l.

The third stage III, which is divided into several sub-stages

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is operated with flow and boiling, runs in the reaction risers 15 to 18, the number of sub-stages corresponds to the number of reaction risers. In the exemplary embodiment presented above, this means four sub-stages. The water to be degassed is mixed with primary steam in each sub-stage of stage III. After stage II the oxygen content of the water drops to around 20 to 10 mg / 1. The water is advantageously sprayed out of the pipe socket 9. For this purpose a Pipe extension are used, which only stretches along the length of the feed water tank 1, whereby the in Fig. circulation indicated by arrows can be promoted. This has the advantage that the temperature of the water in the feed water tank is compensated, reducing the risk of adverse local Hypothermia can be reduced without additional energy consumption.

Primary steam is also used in stage IV, which is a post-boiling or bubbling stage,

__0 f jr is made usable partly in stage II as secondary steam and for foil in stage I as tertiary steam. Stage IV is not superfluous even if it is considered that optimal degassing is achieved through stages I to III described can. Stage IV is on the one hand suitable for removing any oxygen content that may have remained due to any inadequacy of the previous stages , and on the other hand the unavoidable high Saueo content during tempering

9098 ^ 1/040

material of the feed water in the feed water tank To reduce the minimum, which is the main advantage of level IV.

The importance of bubble level II should be particularly emphasized. The secondary steam escaping from stage III must namely bubble through the water layer at the bubble plate 14 in any case. The water gets through it the secondary steam is initially heated and because of a longer stay in relation to continuous operation with a high efficiency of the heat yield considerably degassed. In addition, by switching on the stage II a water seal is created which prevents the excreted gases in the feed water tank 1 from being dissolved again. 'The space requirement of level II is very high low and can be accommodated in the room to create an independent degassing stage, which is used to collect the in level I atomized water is required anyway. , In the four-stage degassing system described above, there is a series connection on the water side in each stage, while on the gas side in stage III a parallel circuit and in stages I and II a series circuit have been created. In each sub-step of Stage III primary steam, ie steam iet been used, whereby the effectiveness of the unterteiltentStufe III substantially ge could be promoted.

The invention is obviously not restricted to the exemplary embodiment according to FIG. 2, as can also be seen from the following discussions. ·

909846/0406

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In stage III, which is made up of reaction risers connected in series, the degree of flushing can be determined the number of sub-stages used, through a corresponding choice of pipe dimensions and nozzle capacities or their mutual comparison increases or decreases, i.e. each set so that the temperature and gas content of the feed water escaping from the last sub-stage correspond to the prescribed values. At least two reaction risers are expediently used, wherein the riser pipes are arranged arbitrarily in plan view can be. In practice, however, it is most beneficial to if they are arranged along the circumference of a pitch circle with an even division, because then the production and installation of the degasser according to the invention cartridge can be made most easily. Such an arrangement is shown in the plan view according to FIG. 3, where a degasser cartridge is shown in a section according to FIG Line A-A of Figure 1 is shown on an enlarged scale. Here, too, four reaction risers 15 to 18 are ver has been applied, which via lines 34, 35, 36 with each other are connected in series · The pitch circle with a radius R is shown in dash-dotted lines. The pipe socket 9 is in the longitudinal direction of the feed water tank T from the reaction dough pipe 18, which is the last *

Forms lower level of this level.

In Figs. 5 and 6 there is another advantageous one Execution of the whirlpool plate 14 shown * The perforated steam supply pipes & 4Ϊ run here

in a likewise perforated annular tube 55 which is attached in the middle and within it the centrally located steam supply pipe 26 is located. The reaction risers 15 to 18 are indicated by dashed lines Lines have been shown. Instead of the head funnel 20 according to FIG. 2, a steering bell 56 closed at the top has been used here, which extends over the tubular extension 58 of the Reaction riser pipe 15 is located, the pipe extension 58 protruding into the bubble plate 14. In the area below The steering bell 56 in the vicinity of the base plate 19 of the bubble plate 14 has openings 59 which are advantageously semicircular. The flow path of the water is indicated with arrows a_. The advantage of this embodiment is that within the steering bell 56 creates a water seal V on the water side, through which the admission of the gases that have already been eliminated is closed backwards to the feed water container 1, so that these can not be released again.

The reaction risers 16 to 18 open into one

Pipe socket 60 in the interior of the bubble plate 14, to each of which a bell 57 is adapted. The steam supply pipes 54a emanate from these bells 57 and open into an annular line 55. The flow path of the steam is indicated by arrows b. The bells 57 each with a pipe socket 60 form a siphon-like steam-side feed head with a liquid closure

V. The water level ν of the water seal V represents g "" 9

then turn one when the vapor pressure for some reason

- 28 -

fails to occur and the liquid flows backwards through the perforations in the tubes 54, 54a and 55. But it is easy to see that the water seal cannot sink below the water level. The water closures BV _yl V prevent gases that have already separated out from diffusing back into the feed water tank or into a boiler room. This, however, has eliminated a significant shortcoming of the known degassers.

In Figs. 7-10 there is another advantageous one Embodiment of the invention has been shown, the

can be used economically with more moderate requirements. In this regard, admissible levels are indicated Oxygen or carbon dioxide from 5 to 100 g / kg indicated. In contrast to the device according to FIG. 2, these are omitted here Degassing stages III and IV, while stage II is designed in its own modified form · This device ' can be connected to both feed water tanks and low-pressure boilers up to a maximum of 16 att operating pressure as a degasser · The flow paths of the water or the Steam are again indicated by dashed arrows a, and through continuous arrows b indicated.

In this embodiment too, the device can essentially be connected to the feed water tank 1 as a structural unit. The cylindrical container 34 is detachably fastened between flanges 5 along its flange 34a by means of fastening screws 6 Overflow pipe 36 with an elliptical cross-section is through dl «bottom plate 3§ of the container 34 out of the container

909846/0406

- 29 -

The overflow pipe 36 expediently extends below the water level ν of the water in the feedwater tank 1. Above the water level y, the steam supply pipes 37 open into the overflow pipe 36, whereby only the pipe sockets of the same have been shown for the sake of clarity. The central ascending pipe 38 for the delivery of steam extends inside the pipe 36, since in the area of the base plate 35 it terminates in the shape of a cylinder over a conical section.

In the interior of the container 34, circular bubble plates 39 and 40 are arranged one below the other in plan view, through the bottom plates 41 and 42 of which a central steam distribution pipe 43 is passed, in the interior of which a steam supply pipe 31 extends with a correspondingly smaller cross section. The steam distribution pipe is closed at the top and is attached to the bottom plate 42 of the bubble plate 40 at the bottom.

In the area of the two bubble plates 39 and 40 branch ver star-like perforated bubble pipes 44, which extend above the base plate 41 and 42, but below the water level v ^ and v_. In the illustrated embodiment, within a respective hot plate 39 and 40 each with eight hot tubes have been used 44 · \ In the hot plate 39 an upper course has a tubular '46 uni in the hot plate 40, an upper overflow pipe 46 mounted · The upper pipe 45 is through the base plate 41 passed through and dips under the water level v, while the upper course pipe 46 is passed through the bottom plate 42 , with its lower opening below a water «

- 30 -

mirror V ₃ to lie there. ^ The water level V ₃ is assigned to that water layer that collects in the lower region of the container 34 and overflows over the edge of the pipe 36 into the feed water container 1. Pin cylindrical downwardly directed wall 40a of the bubble plot 40 rests on the base plate 40 of the container 34, wherein in the lower area of the wall 40a semicircular? Recesses 40b are provided.

Above the bubble plate 39 in the interior of the dome there is a collecting funnel 47 which is attached to the base plate 41 of the bubble plate 39 and with its cylindrical wall 48 divides the bubble plate 39 into an inner compartment 39a and an outer compartment 39b the cylindrical wall 48 are passed through. The compartments 39a and 39b are above the overflow openings 52 communicate with each other · A conical wall 49 dee collecting hopper 47 runs in an upward cylindrical rim 50 from extending over which "ire circumferential shield plate 51 which obliquely ό downward and ah of the inside of the wall of the dome 2 is attached,

Exhaust gas from the shield plate 51, the details described so far form a structural unit, so that they can be attached or fastened to the feedwater bahiltar 1 as a thermal degasser cartridge.

The device certainly Fig. 7 to 10 works as follows ι

When the device verwandet as a degasser at a boiler pressure, which is to "feed water under pressure ntgaaanda

- 31 -

-TO " is supplied via the pipe 30 and through the disintegrator head 33 atomized, after which as arrives in the form of finely divided drops in the dome 2. The atomized water falls under the action of gravity and is through the collecting funnel 47 to the inner compartment 39a of the upper bubble plate 39 supplied.

The first degassing stage I takes place in the interior of the dome 2 above the conical wall 49. The one with the vapor which is mixed with the excreted gases escapes via the nozzle 32 in the direction of the arrows Jb of FIG Contraption·

Level II consists of three sub-levels. The first sub-level takes place in compartment 39a, the second sub-level in compartment 39b and the third sub-level on the spru- delplatte 40. As can be seen, the gas to be degassed arrives Water in all sub-stages of stage II in contact with primary steam of the same purity, which via the steam supply pipe 38 is supplied. That under atomization water supplied is in stage I through the secondary Steam heated and cleaned from the three sub-stages the level II escapes and has been used for bubbly.

The collecting funnel 47 and the shield plate 51 ensure that the water to be degassed, which is Dust flows in from stage I, first of all into the first sub-stage of stage II, i.e. into compartment 39a. Thus, the escaping gases can only meet the water to be degassed in stage I, so that a back solution

- 32 -

-tfV-

of the gas cannot enter.

The bubble tubes 44, which are arranged in a star-like manner, ensure a uniform supply of steam. Your number and even the star shape of their arrangement can be changed at will, as long as a uniform steam distribution is ensured is.

The water overflows from the compartment 39a via the pipe 52 into the outer compartment 39b and repeatedly encounters bubbled primary steam of the same purity. The plate 4o _f, which forms the third sub-stage of stage II, is reached by the water via the overflow pipe 45, in which repeated contact with primary steam has taken place. From the plate 4o the water flows via the overflow pipe 46 into the collecting space 53 in the lower part of the feed water tank 34. The water layer that forms here, which forms a water-side water seal V, escapes after a short stay over the edge of the pipe 36 from the degasser cartridge and arrives into the feed water tank, with either a supply below the water level ν or an outflow taking place directly above the water surface. The gas-side water seal ν arises in

Inside the steam distribution pipe 43 closed at the top between the upper mouth of the pipe 38 (water level VO and the bottom plate 42. As can be seen from FIG a redissolution of the separated gases in the feed water tank 1 by the water seal V prevents even then, if for any reason the steam supply in the device stops and there is no steam pressure.

- 33 -

Ä-

11 to 14 show an advantageous exemplary embodiment of the upper bubble plate 39 of the device according to FIG. 7. One difference is that two overflow pipes 61 are arranged close to each other in compartment 3.9b, and two overflow openings 62 have been provided opposite these. On the other hand, the flow path of the water flowing into the compartment 39θ has been lengthened via the aforementioned overflow openings by means of guide plates 63 and 64, whereby the contact time between gas and water and thus the intensity of the degassing increases. The steering plates 63 are attached to the steam distribution pipes 44 and reach above the Wisserepiegel ν, -, so that the water is forced below the Pipes 44 to flow through (Fig. 12) · The steering plates are in sectors between two steam distribution pipes 44 arranged, with the! enclosed spaces at the Begin base plate 41 and enclose a gap 65 with the vertical wall of the collecting funnel 47- (FIG. 7). The flow path of the water thus takes the one shown in Figs.

11 and 14

These measures force the water in compartment 39b, i.e. in the second sub-stage of stage II both in the vertical and in the horizontal direction with several changes of direction a snake-like

To execute movement · Steering plates can be used in every

can be attached to each pipe · They can, however, be omitted in some sectors · The flow paths · of the water • are also indicated here by dashed arrows £ and tji · of the steam ·· by continuÄ & fi & fcl » WAÄt b.

- 34 -

In FIG. 15, a lower bubble plate 40 is shown, which corresponds to that according to FIG. 11. She knows on the one hand, two water supply points, indicated by dashed lines Lines correspond to symbolically indicated upper course pipes, and on the other hand two upper course pipes 66. By the way the structure corresponds to that of the plate according to FIG. 10. This arrangement results in the lower and upper Plate each has two separate flow paths, as is sufficiently illustrated by the arrows a_.

16 shows a vertical section of a water heater for consumption, which is equipped with a degasser cartridge P according to FIGS. The prepared hot water passes through lines 67 and 68 into the consumer F. The line 68 contains a pressure booster puff. On the other hand, a level control valve N is provided in the line 69, via which the raw water flows to the degasser cartridge P, which is connected to a float U in the interior of the tank of the water heater M. A safety valve B is arranged on the container M, from which a line 70 leads to a sponge channel. A line 71 is for supplying Primirdampf in the Entgaserpatrone P, and includes a temperature control valve with a thermostat I connectedness dan, the '. protrudes into the container M.

The device according to FIG. 16 works as follows: The fresh water to be heated is first fed via line 69 to the degasser cartridge P, where it

909846/0406

is heated by the primary steam supplied via line 71. The excreted oxygen and carbon dioxide gases escape via a line 72 into the environment. The water supply is ensured by the valve N and the float U with level control. The amount of primary steam that is supplied via line 71 is regulated by a control circuit consisting of the temperature control valve H and the thermostat I. In justified cases and especially at temperatures above 100 ⁰ C, εη- instead of a temperature control, a steam pressure control as provided for boiler feed water.

The heated water passes from the container M via the line 67, which is provided with a funnel 67a, to the booster pump jsz and then via the line 68 to the

Consumer F.

A recirculation line 74 leads from the consumer F back to the container M ₁ in which a safety valve B is provided. Via this valve, the water not consumed by the consumer can be used by means of the pump sz; be conveyed back into the container M, as indicated by the arrows «a. In this way, the If there is no consumption, adverse effects can be avoided

In the device according to FIG. 16, instead of

the usual surface heat exchangers in the degasser cartridge P a direct heat exchange has been used: da8 un-softened raw water flowing in under pressure via line 69 is fed in by atomization, the water

909846/0401

- 36 -

loses its pressure and flows through the degassing stages the Entgaeerpatrone, as has been explained with reference to FIGS. 1 to 6. The degassing has occurred, whereby the precipitation occurring as a result of the thermal softening is deposited in the form of sludge and over the pipe 73 has been removed. The degassed water is partly under the action of gravity and partly by the The negative pressure generated by the adiabatic expansion is supplied to the feed water tank M via the pipe 76 The primary steam supplied to the feed water tank M via the line 71a and the nozzles 8 is also used to implement the already mentioned security level IV. The slide bolts shown are closed and / or correspondingly opened to effect the operations described * From FIGS. 1 to 6 and 16 it can easily be seen that the degasser cartridge is in different positions to epeieewaeeerbehälters or »for consumption water heating «He can take · Figs. 1 and 2 show an arrangement bsi which the degasser cartridge on a boiler feed water container is constructed. In Fig. 16 is the degasser patron · arranged next to the hot water tank, the reaction riser pipes being surrounded by a jacket 78.

The last reaction riser pipe does not lead into the hot water tank, but into the interior via a pipe socket .77 the mentioned jacket * Incidentally, the degasser cartridge P is constructed in the same way in both cases. In Fig. 17 is shown "the device in which the degasser cartridge" is provided next to a boiler K and via a pipe to this ^el 10J! <; HlQa8 "for £ 8t.

- 37 -

- bit -

2320844

The degasser cartridge P ¹ according to FIGS. 7 to 14 can also be arranged very differently in relation to a boiler or a feed water tank. In FIG. 7 it is built on a feed water tank, in the embodiment according to FIG. 17 it is connected to a hot water tank M or a feed water tank by means of a pipe 79. The lower closed part of the degasser cartridge P ¹ lies in a closed jacket 78 '. 19 shows a case where a degasser cartridge P ^{1 is arranged} next to a boiler K and is connected to it via a pipeline 8o. In the embodiment according to FIG. 2o, the degasser cartridge P ¹ is mounted on boiler K.

It is easy to see that the connection shown in FIG. 16 or the locking system used there correspondingly also in the embodiments according to FIGS. 17 to 20 can be used.

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L ft-;

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Claims (1)

PATENT CLAIMS? 8 2 nights; H 4 1. Procedure for preparing water, in particular, of boiler feed water., domestic hot water and the like. with water vapor by degassing in several stages, denoted by the fact that at least one degassing. «? - stage is carried out as a reboiling stage, wherein Water that has already been degassed in at least one preliminary stage at negative pressure to rise and thereby to intimate mixing is forced with the steam «2- Method according to claim 1, characterized in that that several preliminary stages are used for degassing. 3. The method according to claim 1 or 2, characterized in that that the negative pressure is generated by the adiabatic expansion of primary dempf. 4. The method according to any one of claims 1 to 3, characterized marked that the post-boiling stage divided into several sub-stages and the water driven up by the negative pressure and mixed with steam directed downwards, then by steam supplied with adiabatic expansion, expediently generated by primary steam Negative pressure is driven up again, these measures expediently repeated several times in succession will· 5. The method according to any one of claims 1 to 4, characterized in that the post-boiling stage a bubbling stage is connected upstream, with the water to be degassed being supplied with steam, which is - 39 - 46/0408 BATH ORIGINAL sieve level escapes. - ^ *, "" 6. The method according to any one of claims 1 bio 5, characterized in that before the post-boiling stage, the water is expediently fed in a first stage by atomization to a closed space where the water flows with steam in Gfirjenstrorn * 7. The method according to claim 6, characterized in that the atomization stage as a first stage, the bubbly stage as a second S stage and the post-boiling stage as a third stage, The tertiary steam escaping from the bubble stage is added to the water supplied in the closed space during atomization supplied, in the first stage the partially degassed Collected water and in the second stage the water collected by bubbling the from the reboiling stage as a third stage escaping secondary steam is supplied and primary steam is used in the third or post-boiling stage will. 8. The method according to claim 7, characterized in that - indicates that as a fourth cd he security level Steam, expediently primary steam, is supplied to the already degassed water in the feed water tank or the like will. 9. The method according to claim 8, characterized in that that dor escaping secondary steam in the fourth stage made usable in a previous degassing stage, expediently in the second or Bubbly level together with the one from the third or subsequent - 40 - ^r _BA r ORIGINAL . 282084A O ■ the steam escaping from the boiling point is fed into the water will. 10. The method according to any one of claims 7 to 9, characterized _r that the degassed water from the third stage to the feed water tank expediently fed in the longitudinal direction of the container sprayed onto the water surface, and is thereby caused in the circulation of the water. 11 · Process according to one of Claims 5 to 10, characterized in that the post-boiling stage is carried out in four sub-levels. 12. Device for practicing the method according to one of claims 1 to 11, characterized in that a post-boiling stage in the form of at least one, expediently upright, bottom completed outer tube (15a to 18a) and one to this at a distance coaxially arranged inner tube (15b to 18b) is provided, the inner tube above the lower closure plate (23) of the outer tube ends, and a reaction riser tube (15 to 18) is provided, which consists of one in the lower End of the inner tube emptying nozzle (24), the upper region of the outer tube with a water source is in connection, which has already been partially degassed in at least one previous stage. 13. The apparatus according to claim 12, characterized in that several, suitably four Reaction risers (15 to 18) are provided, of which the upstream first riser (15) with 309846 * 0400 - 41 - its outer tube. (15a) connected at the top to an overflow funnel (20) installed in the pre-degassed water source is, while the downstream last reaction riser pipe (18) with its inner pipe (18b) indirectly or opens directly into a feed water tank (1), consumption hot water storage tank or the like *, the dem last reaction riser pipe (18) preceding riser pipes (15, 16, 17) with their inner pipes (15b, 16b, 16c) on the water side connected in series in each case in the upper region of the outer tube (15a, 16a, 17a) of the next in the sequence Open out reaction riser pipe. 14. Apparatus according to claim 10 or 11, characterized in that the reaction riser pipes (15 to 18) with steam supply nozzles designed as Laval nozzles (24) and are connected via this to a common steam distribution pipe (25) which is connected to a steam supply pipe (26) expediently for primary steam is connected. 15. Device according to one of claims 12 to 14, characterized in that a second degassing stage is provided in the form of a bubble plate (14) in which a perforated steam supply pipe (28) is arranged and the reaction riser pipes (15 to 18) to the Connect the lower surface of the bottom plate of the bubble plate 2 ^r > (14), the first reaction riser pipe (15) being connected to an overflow pipe (20) of the bubble plate (14), while the remaining reaction riser pipes (16, 17, 18) are connected to the interior of their Outer tubes (16a », 17a, 18a) 90S846 / 040S - 42 - Via pipes (22) or the like. To the perforated steam supply pipe (28) are connected to enable that the secondary steam escaping from the post-boiling stage the water in the bubble plate (14) can flow. 16. Device according to one of claims 12 to 15, thus g e k e η η ζ e i c ii η e t, daf3 in the above part the bubble plate (14), which essentially forms a closed space, serves as a first degassing stage Dome (2) or the like. Is provided with an atomizer head (33) for supplying the water to be degassed and thereby serving to utilize the tertiary steam escaping from the bubble plate (14), the dome in its lower part is completed while in its upper Part of an opening (32) for removing the excreted Has gases. 17. Device according to one of claims 12 to 16, characterized in that as a backup or fourth degassing stage in the feed water tank (1) _f consumable hot water tank or the like. inside the feed water tank (1) or the like. Mounted below the water level (v) which is set there and the space above this water level (v) is connected to the perforated steam supply pipe (28) of the bubble plate (14), around the escaping from the safety level To supply secondary steam to the water present in the bubble plate (14) via pipes (29) or the like. 909846/0406 "43 _ BAD ORiGSNAL 18. Device according to one of claims 12 to 17, characterized in that in the lower Area of the outer pipe (I5a) of the first reaction riser pipe (15), advantageously one in the height area of the Laval nozzle (24) Opening, expediently a series of bores (21) formed which serve to ensure a continuous flow when the water supply in the feed water tank (1) is stopped To ensure water circulation, 19. Device according to one of claims 12 to 19, characterized in that the steam supply pipe the bubble plate (14) is designed with perforated pipe branches (54) arranged in a star shape, which branch out from an annular tube (55) which is expediently attached in the central region of the bubble plate. 20. Device according to one of claims 12 to 19, characterized in that the outer tube (15a) of the first reaction riser pipe (15) is designed as a pipe socket (58) which extends into the bubble plate (14) extends and top by a closed bell (56) or the like. Is completed in such a way that a water-side water seal (V) is created, the bell (56) is extended towards the upper flange of the pipe socket (58) and in its side wall in the area of the base plate (19) of the bubble plate (14) an opening, advantageously a series of semicircular openings (59) is provided. 21. Device according to one of claims 12 to 20, characterized in that the outer tubes (16a, 17a, 18a) of the second and the further reaction riser 909946/0406 - 44 - pipes (16, 17, 18) open out via a pipe socket (60) or the like. in the hot plate (14) which is covered by a against the upper flange the same elongated bell (57) or ■> the like. such that a gas side A water seal (V) is created and at least one branch (54) of the perforated steam supply pipe opens out of the bell suitably below the upper flange of the pipe socket (c), the upper flange of this pipe socket (60) being suitably lower than the upper flange of the pipe socket (58) of the water-side water seal (V). 22. Device according to one of claims 12 to 21, characterized in that the reaction riser pipe or the reaction riser pipes (15 to 18) together with the bubble plate (39), and advantageously with the steam supply, steam distribution and steam feed pipes (26a, 25, 28) j useful when using detachable Connections by means of flanges and fastening screws (5, 6) designed as a structural unit and degasser cartridge is, the one attached above the bubble plate and made of by flanges and fastening screws (5, 6) connected parts existing dome (2) is also designed as a structural unit that is attached to the feed water storage tank (1) and / or can be attached to the bubble plate (14). 23. Device, in particular for preparing water, in particular boiler feed water, hot water for consumption and the like with steam by degassing in several stages, characterized in that B098A6 / OA06 - 45 - that, JJ - A bubble plate is provided which - Serves as a second degassing stage, suitably charged with primary steam and hardly of any practical use is arranged upright shape and - this room divided into a lower room part and an upper room part, - is divided into interconnected compartments that separate the second degassing stage into sub-stages, - to the innermost compartment, from above a collecting funnel or the like. Adjoins that in an upper part of the room is attached, which serves as a first degassing stage to the water supplied by atomization with the Steam, expediently to be brought into contact with the secondary steam that escapes from the second bubbling stage, - In an outer compartment of the bubble plate, an overflow pipe or the like. Is arranged, which is in the lower Part of the room extends, - An overflow pipe is provided which protrudes downward from the lower part of the space and with its upper Flange useful in a feed water tank, consumable hot water tank or the like - is expediently above a floor plate closing off this lower part of the room, - and in this way forms a water-side water seal (V _v ), - - Furthermore, the lower flange of the overflow pipe expediently below the water level (v) of the feed water 90SS46 / 04Q6 - 46 - holder (l) or the like. Sufficient. 24. The device according to claim 23, characterized in that below df.:r SprudeJplatte (39), which is arranged under the space that forms the first or atomization stage, a further bubble plate (40) is provided, which is expediently on the base plate ( 35) of the container (34), which forms the lower part of the space. 25. The device according to claim 23 or 24, characterized in that the bubble plates (39, 40) with a central closed steam distribution pipe (43) are equipped from which the perforated steam supply pipes (44) of the bubble plates (39, 40) in a star shape branch. 26. Device according to one of claims 23 to 25, characterized in that in the steam distribution pipe (43) a steam delivery pipe (38) lower Diameter is arranged, the upper edge of which is expediently above the perforated steam supply pipes (44) of the topmost bubble plate (39) is, the steam conveyor, which with the steam distribution pipe (43) has a gas-side Forms water seal (V). 27. Device according to one of claims 23 to 26, characterized in that the upper bubble plate (39) is divided into two coaxial compartments (39a, 39b) which are connected to one another via an overflow opening (52) by means of an annular wall (40) , where an overflow funnel (45) is arranged in the outer compartment (39b) , which opens out above the lower plate. 8098 46/0406 - 47 - Q \ 2820344 28. Device according to one of claims 23 to 27, characterized in that the collecting funnel (47) from a lower cylindrical part (48) and an upper upwardly widening conical part (49), and expediently consists of an upper cylindrical part (50), the lower cylindrical part (48) the upper plate (39) divided into compartments (39a, 39b), and the upper cylindrical part (50) by a screen plate (51) is covered at a distance, which runs obliquely downwards and on the wall of the upper atomization chamber forming Domes (2) revolve. 29. Device according to one of claims 23 to 28, characterized in that the lower Whirlpool plate (40) is provided with an overflow pipe (46) which opens out in the lower region of the container (34), wherein the plate (40) rests with its annular lower wall (40a) on the base plate (35) of the container (34), and in its lower area adjacent to the base plate (35), suitably semicircular openings (40b) having. 30. Device according to one of claims 23 to 29, characterized in that the over the Bottom plate (35) of the memory protruding downward from the part of the lower part of the container protruding overflow pipe (36) has an elliptical cross-section has, while its inside of the container (34) lying part is cylindrical (Fig. 8). 909846 / fHOe - 48 - 31. Device according to one of claims 23 to 30, characterized in that the central Steam supply pipe (38) is attached in the overflow pipe (36), wherein the steam supply pipe (37) or the steam supply pipe through the wall of this overflow pipe (36) led through open into the steam supply pipe (Fig. 8). 32. Device according to one of claims 23 to 31, characterized in that the transition opening (52) between the compartments (39a, 39b) of the upper plate (39) and the overflow pipe (45) in the outer compartment (39b) in a plan view like this and, expediently, under a mutual Angle of 180 ° are arranged that they cause a flow of water, expediently the lower end of the overflow pipe of the upper plate below the water level of the lower plate and the lower end of the overflow pipe of the lower plate below the water level (V) of the the water in the container (Fig. 9). 33. Device according to one of claims 23 to 32, characterized in that the overflow pipes (45, 46) of the lower and upper plates (39, 40) in plan view opposite one another, and advantageously below are arranged at a mutual angle of 150 °. 34. Device according to one of claims 23 to 33, characterized in that in the outer Compartment (39b) of the upper bubble plate (39) radial steering plates (63) are arranged, which are expediently over the Water level (v ,.) reach and the water flows around (a_) 909 * 66 * 0406 - 49 - ■ -ft. force under the steam supply pipes (44), at least the steering plates at least to some of the star-shaped arranged in the outer compartment (39b) of the upper bubble plate (39) perforated steam supply pipes (44) are connected (Figs. 11 and 12). 35. Device according to one of claims 23 to 34, characterized in that in the outer compartment (39b) of the upper bubble plate ... at least in some of the sectors between the star-shaped steam supply pipes (44) steering plates (64) are arranged, which are connected to the side wall and the bottom plate (41) of the plate are, expediently reach above the water level and with the cylindrical partition wall (47) a gap (65) include and extend the flow path of the water (Figures 11, 13, and 14). 36 «Device according to one of claims 23 to 35, characterized in that for the purpose Securing two flow paths in the upper plate (39) close to each other two flow openings (62), and these opposite in the outer compartment (39b) two overflow pipes (61) are provided, wherein in the lower plate (40) in relation on the upper run pipes of the upper plate also opposite each other two juxtaposed upper run pipes (66) are provided (Figs. 11 and 15). 37. Device according to one of claims 23 to 36, characterized in that the lower container (34) with the overflow funnel (47), the bubbling plates (39, 40), with the steam supply pipe (38), the 8098 ^ 6/0 ^ 06 - 50 - Steam distribution pipe (43) and forms a structural unit with the overflow pipe (36), which is attached to the feed water tank
(1) or the like. And / or can be detachably connected to the dome (2) expediently by means of flanges and fastening screws (5, 6) (FIG. 7). 38. Device nnrh one of claims 23 to 37, characterized in that on the upper part of the dome (2) a pipe socket (32) or the like. For kidnapping the separated gases is connected. - 51 -