DE8438393U1 - Device for using prefabricated, dimensionally stable filter bodies which can be converted into filter packs for filtering and / or chemico-physical treatment of liquid and / or gaseous media - Google Patents

Description

Device for the use of prefabricated, dimensionally stable filter bodies for filtering and / or chemico-physical treatment of liquid and / or gaseous media =========================================== =======

The invention relates to a device for using prefabricated, prefabricated, dimensionally stable filter bodies for filtering and / or chemico-physical treatment of liquid and / or gaseous media, with the filter body made of granular, fibrous or fiber-containing filter aids and / or one or more mixtures in the precoat process such filter aid with liquid with addition single-layer or multi-layer moldings formed by binder contain, which under drying to form stable bodies are stabilized.

From DE-OS 32 34 560 a filter device, especially for beverages, is known in which filter packs between rigid filter supports under practically constant areas pressure can be held. These filter packs are called For example, frustoconical, stable filter bodies are used between the filter supports. As soon as with the Filter carriers a desired surface pressure acting on the filter body has been built up Filter body converted into granular filter packs by removing the binding agent. The usefulness, the goodness and the properties of such filter packs could not be to the desired extent and with the required reproducibility previously determined when transferring the filter body into the filter pack in

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the filter pack developed in a suitable manner and during the filtering process over longer periods of steam be maintained.

In contrast, it is the object of the invention to propose an improved device for the use of filter bodies which can be converted into filter packs and which makes it possible for the filter pack to be formed from the filter body, previously definable and selectable filter properties, connected with increased total throughput and correspondingly increased total service life as well as improved adaptability during the filtration operation, setting option to a desired initial pressure drop and Significantly improved insensitivity to pressure and shock developed and these improved properties also during Maintains a long service life in filtration operation. Included should also be made possible new and improved ways of using the filter bodies that can be transferred into filter packs.

This object is achieved by the device according to the invention solved in that arranged inside a boiler, rigid filter supports are provided between which the Filter body before a filtering process and before transfer is to be inserted into a filter pack by dissolving out the binding agent while maintaining a predetermined contact pressure on the filter supports, and that also means for generating and maintaining the contact pressure on the filter carriers during the transfer of the filter body into a filter pack and during the sequence of the filtering process aur ^ previously determined, practically constant value are provided.

γ-t..j _# -pUu- _r Heinrich Seid? - Pstentsnwsii · Biersisdtsf Höhe J5 - Pcsifsch 5205 - 6200 Wissb

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The invention makes it possible that a dimensionally stable filter body, which can be safely transported and easily and safely inserted into a filtering device , is converted into a highly effective filter pack of desired properties in the filtering device and is kept in a highly effective state over a long service life.

In the device according to the invention, the contact pressure can be optimally selected and maintained in such a way that an output pressure drop of the desired size is established across the filter pack. With the setting of such an initial value for the pressure drop, the filter packing is already optimally effective from the start of operation. Furthermore, the device according to the invention can contain devices and devices with which the pressure drop that builds up in the unfiltrate-filtrate flow over the filter pack is monitored as a function of the filtration time during the filtration process, so that if this pressure drop rises above a predetermined value, the filtration process canceled and the filter pack remaining in its position between the filter supports washed out by backwashing or, if the pressure drop rises very rapidly or the effectiveness of the washout process decreases, the filtering process can be canceled and the filter pack can be regenerated using approved chemical agents. The devices for generating or maintaining the contact pressure on the filter supports can also be designed to increase the contact pressure to a level suitable for pressing out the filter pack, devices for blowing through the filter pack with inert gas being provided.

Dipl.-Phy «. Heinrich Seids · Patent Attorney · Bierstadter Höhe 15 ■ Postfach 510S ■ 6200 Wiesbaden 1 · 'S "(0 6121) 56 20

7 -

Embodiments of the invention are explained in more detail below with reference to the drawing. Show it:

1 shows a device according to the invention Applicable filter body in perspective vischer representation;

FIG. 2 shows an enlarged schematic partial section corresponding to line 3-3 in FIG a filter body with layers of fibrous filter aids;

3 shows an enlarged schematic partial section

corresponding to line 3-3 in FIG. 1

on a filter body with layers of granular

Filter aids; 4 shows an enlarged schematic partial section

corresponding to the line 3-3 of FIG

a filter body with layers of mixtures of fibrous and granular filter aids 5 shows a device according to the invention in the form of a filter device for the application of

Filter bodies according to Figure 1 to 4 to Bil

dung of filter packs in axial section; Fig. 6 is a partial representation of filter carriers and Filter packs in a filter device according to Figure 5 and

Fig. 7 shows the pressure over time

waste and the performance on one in a device according to the invention A filter pack formed by a filter body with intermittent cleaning and rain regeneration.

Examples of the structure of a filter body 10 that can be used with a device according to the invention can be seen in FIGS. This filter body 10 is made up of filter aids and, in the examples shown , has the shape of a truncated cone.

DlpL-Phys. Heinrich Seids ■ Patent attorney ■ Bierstadter Höhe 15 ■ P.O. Box 5105 ■ £ 200 Wiesbaden 1 ·

(06121) 562022

The filter body 10 is surrounded all around by a porous envelope. In the examples shown, this porous sheath 31 consists of fabric, as it is previously known for use as a filter cloth, and has a closing edge 32 which is to be placed outwardly over the outer peripheral edge of the filter body 10 and which is fastened with a Velcro fastener or in another suitable manner to be attached to the shell part lying on the outside of the filter body 10. This porous envelope 31 is attached to the filter body 10 after stabilization and drying and, if necessary, surface sealing of the latter.

In the examples of FIGS. 2 to 4, the filter body 10 has a plurality of layers. In the example in FIG. 2, nine layers a to i are provided in the filter body 10, which are made up of fibrous filter aids. Layers a to g are - in the direction of filtration flow indicated by the arrow - successively finer, starting from a very coarse layer a, which essentially acts as a distributor for the unfiltrate, up to a very fine layer g that filters sharply and disinfects. G of the very fine layer follows - seen in filtration flow direction 33 - h a medium-coarse layer, c may correspond to the b for example, the position or the like. This medium-coarse layer h is followed by a very coarse layer i, which functions as a collector for the filtrate on the filtrate outlet side of the filter pack formed from the filter body 10. The medium-coarse layer h essentially functions as a separation between the very coarse layer i and the very fine layer g.

In the example in FIG. 3, a similar structure of layers i to r of granular filter aids is provided. For this structure, the same points of view apply analogously as above in connection with the example according to

DipL-Phyt. Heinrich Silk. Patent attorney ■ Bierstadter Höhe 15 ■ P.O. Box 5105 · 6200 Wiesbaden 1 · * g »(0 6121) 56 2022

Figure 2 are explained. In contrast to the example according to FIG. 2, 33 follows in the direction of filtration flow very fine position ο a medium-fine position p, which could for example correspond to position m. On this medium fine Position ρ follows - seen in the direction of flow of the filtration - a medium-coarse layer q, for example similar to the layer 1 or location k. This is then followed - viewed in the direction of filtration flow 33 - the very coarse position r, the for example can correspond to the position j.

In the example in FIG. 4, the positions s to ζ are off

Mixtures of granular and fibrous filter aids built up. Otherwise, the same points of view apply as they have been explained above in connection with the example according to FIG FIG. 4 shows the very fine layer χ - viewed in the direction of filtration flow 3 ″ - another particularly fine one Position x ', which can be suitable, for example, for highly effective sterilization filtration.

The examples shown in FIGS. 2 to 4 are only intended to represent basic possibilities. For example could also be a mixed structure with layers of purely granular filter aid, layers of purely fibrous filter aid and layers of mixtures of fibrous and granular Filter aids are provided, for example a layer structure - viewed in the direction of filtration flow 33 - of: j, k, c, d, w, x, x ', y, r or the like.

As an example for the use of a filter body according to Figures 1 to 4, a filter device 40 is shown in Figures 5 and 6, in which the filter body together with its shell 31 between rigid filter supports 41 are to be used. In the example shown, these filter carriers 41 are designed as conical, ring-shaped plates which, when they are stacked on top of one another, have intermediate spaces

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DIpL-Fhys. Heinrich Seids ■ Patent attorney - Bierstadter Höhe 15 ■ Postfach 5105 ■ 6200 Wiesbaden T

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form. In every space between two neighboring ones A filter body 10 according to FIGS. 1 to 4 fits into the filter supports 41, the porous envelope 31 resting on the Surface of the adjacent filter support 41 places, and the Enclosing the peripheral edges of the filter packs formed. The right part of FIG. 6 shows a number of filter carriers 41 placed one above the other with interposed ones Filter bodies 10. Each filter carrier 41 has a support on the top, formed with guide channels 42 Frame 43 for the filter body 10 and on the underside a support frame 45 formed with guide channels 54. The stack of filter carriers 41 and filter bodies 10 is arranged around a central pull rod 46 which is attached to the upper part carries a force transmission body 47 which rests on an uppermost filter support 48. the Tie rod 46 is connected at the lower end to a hydraulic cylinder-piston arrangement 49, with one controlled tensile force can be exerted on the pull rod 46. For connection to a filtrate drain 50, each

Filter carrier 41 on the outer circumference with one or more

Connection piece 51 is provided. These connecting pieces are in communication with the channels 44 of the support frame 45. Of these connecting pieces 51 are flexible Connecting pipes 52 or hoses to the corresponding

Keys 53 guided on the tubular filtrate outlet 50.

The unfiltrate inlet 54 is central to which the package of Filter support 41 and filter bodies 10 receiving boiler 55 attached. The channels 42 are in the support frame 43 of each filter carrier 41 with the boiler space

30 56 in connection.

After inserting the filter body 10 between the filter supports 41 and closing the boiler 55 has to begin of the filtration process, the activation of the filter body 10 to take place. For this purpose, the boiler 55 is with

Dlpl.-Phyi. Heinrich Silk · Patent Attorney ■ Blerstadter Höhe 15 · Postfi * 5 Ό ?, j 2CO Wiesbaden 1 - ¹ S ¹ (06121) 56 2022

- 11-

Water, preferably hot water or a mixture of wet steam and water, filled and flushed. Simultaneously with the cylinder-piston unit 49 exerted a predetermined constant tensile force on the pull rod 46. While this activation process turns the binder off the filter body 10 released. For this purpose it is expedient to pass liquid, for example hot water, through the filter body iü to press. This can be done either in the direction of filtration flow or against the direction of filtration flow. follow. During this activation process, the filter bodies 10 are transferred into the filter pack 60 shown in the left part of FIG. Here can be a Compression of the package of filter carriers 51 and filter bodies 10 occur to a certain extent. However becomes with this compression the arrangement and the Cohesion of layers a to i or j to r or s to ζ of the filter body fully maintained. The filter body 10 is slightly deformed into that on the filter supports provided free spaces, especially in the area of preferably to be used sealing rings 61 and 62, a secure seal between the channels 42 of the support frame 43 and the channels 44 of the support frame 45 to form. As a result, all of the product supplied to the filter device 40 is forced into one of the filter packs 60 to enforce in order from the interior 56 of the boiler 55 to get to the filtrate drain 50. This seal will thereby constantly ensures that with the piston-cylinder arrangement 49 a constant pressure on the pull rod 56 and thus a constant contact pressure of the filter packs 60 to the filter support 41 is maintained.

As Figure 7 shows, builds up during the filtration operation Maintaining constant filter performance of example

Dlpl.-Phys. Heinrich Seid? ■ Patent attorney ■ Bierstadter Höhe 15 ■ Postfach 5105 ■ 6200 Wiesbaden 1

(06121) 56 2022

show about 10 hl / m ² χ h a pressure drop that increases over time at the filter packs 60, for example from 1.0 bar to 2.3 bar. This pressure drop, like the filtration performance, is over- wakes up. If the filtration performance begins to drop when the maximum pressure drop of, for example, 2.3 bar that is permitted in each case, the filter tube will be heard. γη ρ F ί 1 t.prnackunaen are then while maintaining the contact pressure of the filter carrier backwashed with rinsing liquid and re-sterilized. Of the The filtration process is then re-initiated, with the pressure drop building up across the filter packs 60 in the course of the filtration time again, while maintaining constant filtration performance. After more- Malfiltration processes and intermittent rewinding will generally reduce the effectiveness of rewinding, which is reflected in the faster build-up of the Pressure drop, i.e. shortening of the filtration periods between backwashing. It can then rain the filter packs can be adjusted. Also at this regeneration, the filter packs 60 remain between the filter carriers 41, and it is also the tensile force on the pull rod 46 and thus the contact pressure of the Maintain filter carrier 41 or on one for the Regenerating the filter packs 60 set a suitable value. Regeneration takes place in the manner of rewinding, but not with filtrate but with liquid, approved chemical regenerants that are suitable for also organic residues (opacities), in particular Proteins and polyphenols from the filter packs 60 too to solve. Furthermore, an intensive cleaning of the porous casing 31 and the filter aids in the filter pack 60 itself is carried out by this regeneration means.

Dlpl.-Phy ·. Heinrich Silk ■ Patent Attorney ■ Blerstadter Höhe 15 ■ P.O. Box £ uO5 · 6200 Wiesbaden 1 · 'S »(0 6121) 56 20

This is followed by a follow-up treatment with an acid solution, which also removes inorganic contaminants.

If you want to have constant monitoring of the pressure drop save on the filter packs 60, it is also quite possible to do the backwashing and regeneration processes to be carried out at time intervals based on empirical values are to be determined in advance.

The backwashing processes and regeneration processes can be largely improved on the filter packs 60 formed from the filter bodies 10 and kept under constant contact pressure by removing the filtrate or the rinsing, cleaning or cleaning process at the end of a filtration process or rinsing process, cleaning process or regeneration process Drives regenerant to a negligible minimum. For this purpose, the contact pressure on the filter packs 60 can be increased to a greatly increased value without damaging the filter pack, even if it is a multi-layer filter pack. The filter packs 60, which are strongly compressed in this way, then already give off the essential part of the filtrate or of the rinsing, cleaning or regenerating agents retained at the end of the filtration process. Last residues, except for a negligible minimum, can then be removed by blowing an inert gas through the filter packs. This working method is recommended when particularly high-quality products are to be filtered, for example in the production of brandy and the like.

This method of working is also recommended if one or more of them are being used for backwashing, regeneration, washing, Acid aftertreatment and sterilizing agents used

Dipl.-Phy ·. Heinrich Setds ■ Patent attorney · Blerstadter Höhe 15 ■ Postfach 5105 ■ 6Z00 Wiesbaden 1 · '

(0 6121) 56 2022

to avoid environmental pollution should or should be collected as completely as possible.

If the filter pack is used up after repeated regeneration and frequent backwashing, this will be the result of the Filter supports 41 and the filter packs 60 formed Filter package disassembled and fitted with new filter bodies, which are then described in the above Activated before the first filtration process and transferred to filter packs. The finding Whether the filter packs 60 have been used up and are to be replaced is either constantly monitored on the basis of the Pressure drop made or made based on empirical values based on the operating time or the number of backwash processes and regeneration processes carried out. Before removing the filter package from the Filter device 40 a regeneration process is carried out on the filter packs 60.

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Diploma in Phys. Heinrich Seids - Patent Attorney · B; first at height 15 - P.O. Box 5105 - 6200 Wiesbaden 1 ·

- 15 -References

(06121) 5 «20 22

10 filter bodies

20 moldings

31 porous shell

32 closing edge

33 arrow (Filtration flow direction) 4Θ filter device

41 filter holder

42 management channels

43 Shoring

44 channels

45 support frame

46 drawbar

47 Power transmission body

48 filter carriers

49 Cylinder-piston arrangement

50 Filtration Drain

51 connecting piece

52 connecting pipes

53 Connections

54 guide channels

55 boilers

56 Boiler interior

60 filter pack

61 O-ring

62 O-ring

a to ζ layers of 20

Claims (6)

PATENT ADVERTISEMENT DIPL.-PHYS. HEINRICH SEIDS 6200 Wiesbaden 1 · Bierstadter Höhe 15 · Posifadi 5105 ■ Telephone (06121) 562022 Poftgiro account Frankfurt / Main 1810 08-602 ■ Bank: Deuische Bank 306 571 · Nass. Sparkasse 120 040 995 Wiesbaden, the% Λ. November 1385 Sch 263B VNR: 107565 S / ha Helmut Schetzt Kellerweg 22 D-7074 Mögglingen Device for the use of prefabricated, dimensionally stable filter bodies that can be transferred into filter packs for filtering and / or chemical-physical treatment of liquid and / or gaseous media Protection claims 10 15 1) Device for using prefabricated, dimensionally stable filter bodies that can be transferred into filter packs for filtering and / or chemico-physical treatment of liquid and / or gaseous media, wherein the filter body in the precoat process from granular, fibrous: or fiber-containing filter aids and / or one or more mixtures such filter aids formed with liquid with the addition of binding agent, single or multi-layer Contain moldings that are stabilized to form dimensionally stable bodies while drying, marked by, Rigid filter supports (41) arranged in the interior of a vessel (55), between which the filter body (10) before a filtering process and before transferring to a Filter pack (60) by dissolving out the binding agent while maintaining a previously defined Dipl.-Phys. Heimidi Seids · Patent Attorney · Bierstadter Höhe 15 ■ PO Box 5105 · 6200 Wiesbaden 1 · 'S * (0 6121) 56 20 pressure is to be used on the filter carriers (41), and by controllable devices for generating and maintaining the contact pressure on the filter supports (41) during the transfer of the filter body (10) into a filter pack (60) and during the course of the filtering process on a predetermined, practical constant value. 2) Device according to claim 1, characterized in that the filter support (41) plate-shaped with a supporting frame (43) on the top and supporting frame (45) on the underside are formed, the supporting frame (43) and the supporting frame (45) contain guide channels (42, 44) for the items to be treated and the treated items. 3) Device according to claim 1 or 2, characterized that in the filter supports (41) free spaces for inclusion the filter body (10) and possibly additional sealing elements (61, 62) are provided. 4) Device according to one of claims 1 to 3, characterized in that a plurality of for layering in alternating sequence with filter bodies (10) formed Filter supports (41) and for all filter supports (41) common devices for generating and maintaining the Contact pressure on the filter carrier (41) are provided, which have a pressure-controlled, hydraulic cylinder-piston unit (49). 5) Device according to one of claims 1 to 4, characterized by additional facilities to monitor the Filtration process in the unfiltrate-filtrate stream over the The pressure drop that builds up the filter packing (60) as a function of the filtration time, d; - Pstsr.Ssni · -.-! I; Bie-tcdiir Hiihs IS; PoiifsA Sliis- &'iOO Wiiibidss 1 ■ " ¹ ^ ' Oil 21 ^ S62022 additional facilities / to interrupt the filtration process when a predetermined one is reached Value of this pressure drop and washing out the filter pack (60) by rewinding, as well additional facilities for optional regeneration of the filter pack using approved chemical middle 6) Device according to one of claims 1 to 5, characterized in that the devices for generating or Maintaining the contact pressure on the filter carriers (41) are designed to maintain the contact pressure to drive up to a level suitable for pressing out the filter pack (60), and that means are provided for blowing inert gas through the filter pack (60) are.