DE2700817A1 - Powder materials processing system - using descending vortex flow with spray nozzles and adjustable ascending gas flow; esp. for processing milk powder, starch, vitamin(s), etc. - Google Patents

Abstract

Powdery or granular materials are cooled, heated and/or sprayed with liquid or fused materials, by introducing them at the top of a cylinder as a vortex with a vertical axis. A descending gas stream takes them along through a spraying zone. Finally, an ascending counterflow can be adjusted to control the sizing action and/or the residence time. The dissipation of heat is thereby facilitated (if cooling is required). Uniform spraying is ensured and the spray nozzles do not become clogged. The residence time can be easily adjusted and re-crystallisation after packaging is eliminated. Used for mixing of milk powder, starch, vitamin prepations, baby food, detergents, paints; spraying fat on skimmed milk powder.

Description

"method and device for treating powdery

or granular matter The invention relates to a method and a Device for treating powdery or granular substances, namely cooling or

Heating and / or spraying with liquid or molten additive or treatment substances in a vessel that is rotationally symmetrical to the vertical axis.

Methods of this type are widely known and in patents and company publications. she are used for dry mixing of milk powder, starch, vitamin preparations, etc., for the attachment of fat to dry skimmed milk powder for the production of milk replacer, for the production of fat concentrates, with simultaneous cooling, fat is sprayed onto the powder particles, in order to obtain a free-flowing product with a fat content of more than 40%, and for the production of detergents by the cold spray process, with detergent-active Substances are sprayed into a phosphate-perborate mixture. These known methods can be used in conventional dry mixers as well as in other devices, in which clouds of material rising in countercurrent are sprayed with liquid, be exercised. However, they have drawbacks. This is how it heats up in mechanical mixers the material contained therein through the mechanical mixing elements.

It is difficult to dissipate the heat. The disadvantages are particularly evident when the process requires cooling, as is the case with the accumulation of fats usually applies. Mixing alone in the fluid bed leads to premature Classification (sighting of heavy and light and unsprayed components).

Treatments by spraying are only available on the surface of the fluidized bed particles accessible.

Uniform spraying is therefore not possible. The good is separated themselves; the spray nozzles can get dirty; Dust can stick to their openings. The spraying of, for example, fat into the dry material is also known, however, particles arrive in the known devices which have not yet been sprayed through the upward flow of air into the following cyclone or

Filter systems. If the good is cooled, it is only one of the extreme exposed to the cold air stream for a short time. In order to have an additional dwell time for the To achieve crystallization of the fat, additional components are required such as vortex troughs or conveyor belts, these are further disadvantages Post-crystallization of the product after it has been packaged.

The aim of the invention is to eliminate or avoid or

Mitigation of the aforementioned disadvantages.

The invented method of treating powdery or granular substances, namely cooling or heating and / or spraying with liquid or molten Additive or treatment substances in a rotationally symmetrical to the perpendicular axis Vessel is characterized by the fact that the substances to be treated act as a vertebra with a perpendicular Axis entered into the head of the vessel and then from an essentially axially parallel, downwards outgoing gas stream and carried through a spray zone in which the liquid or molten substances are sprayed on, are guided and that this flow after an undisturbed movement over a certain distance to an ascending movement from below Countercurrent meets, through the speed setting of which the sifter effect and / or the residence time is determined. The gases entering the vessel will be preferably tempered according to the desired process run.

In the new process, the spray application is carried out on the entered ones Powder particles or granules in an essential calm zone, namely in a zone in which these particles sink steadily downwards. Through the vortex entry if they are distributed over the cross-section available to them, but then led downwards in a steady stream. You can achieve this distribution via the cross-section below the nozzle ring so that they do not clog the nozzles can.

The norm invented for the practice of the new process, i the has a vertical, rotationally symmetrical vessel which has a vortex introduction device in the middle of the vessel head is characterized by a vortex inlet uniformly surrounding gas inlet opening for introducing the essentially axially parallel Flow, one to these two inlets via a short transition piece in the axial direction subsequent downward expansion of the vessel to a cylindrical chamber, a Spray nozzle ring in the upper part of the enlarged vessel section and on a diameter which is greater than the outer diameter of the gas inlet opening is, through a conical constriction following downwards, through a das The bottom of the vessel, the fluidized bed bottom, which supplies the countercurrent Source is connected, and through a gas outlet annular gap above the conical Narrowing or in the area of its upper edge. The guidance associated with the procedure The gas flows, preferably air flows, can easily be put in by throttling devices the inlets and the gas outlet at the gas outlet annular gap can be adjusted. The current in the vessel is preferably generated by a suction source at the gas outlet. Another A special feature is the arrangement of the vessel in a room (chamber or hall), the is thermally insulated and accommodates the auxiliary equipment that the previously described Feed the vessel, be it with the gases (air) causing the movement, be it with the powdery or granular substances to be treated, be it with the ones to be sprayed on if necessary liquid substances. According to the invention, undesired heat sources can also be outside this space can be arranged like the device for controlling the temperature of the treatment gas (Air).

Easily soluble foods can also be processed using the new process produce, e.g. sugar, cocoa drinks, milk powder, food for small children, however also detergents, chemical products and paints. The principle of this procedure can can also be seen in the fact that on a dry material mixture that is centric in cocurrent is introduced, liquids are sprayed on, the mixture being so even is distributed so that the finest particles stick together to form a porous Build up agglomerate. In cocurrent to the dry product supplied, except the dry product itself on the one hand the liquid to be sprayed on or a for Treatment to be entered steam and on the other hand, if necessary, hot, by Air flowing to the sieve bottom and used for drying, which is in free fall forming so-called agglomerates fall due to their own weight on the lower Sintered soil and are kept there in a vortex by hot air and dried. The agitator prevents caking on the bottom and segregation. The hot air flowing in from above and below escapes through the annular gap to the filter. By guiding the goods in the mixer housing it is achieved that the liquid to be sprayed (resp.

Steam) is completely absorbed by the material to be dried. This will avoided that the downstream filter bags stick together by the liquid and become ineffective. The spray nozzle jets can initially be in one of the dry product Develop free space until the spray cone is fully formed. The cans can do not stick together due to adhering powder particles and the liquid is in the finest Droplets evenly distributed in the dry material0 The new process and the new device are described below using an exemplary embodiment, namely a method for the production of substances that contain a high proportion of accumulated fat, or for the production of fat concentrates, the fat content of the so-called concentrate be more than -40S. The accumulation of smaller amounts of fat is then always possible.

The device features are included with the description of the Procedure addressed.

The device used to produce the fat concentrate or The system is that shown in FIG. It contains several individual units, their most important an isolated room 10 are housed. The isolation 11 of the room 10 is shown uniformly shaded. As the main sections of the treatment process should run at a lower temperature and cooling is required for this is, heat sources are as far as possible from the interior of the room 10 to the outside relocated, these are in particular the motors for driving conveyors such as pumps, blowers, rotary valves, screw conveyors, conveyor belts, liquid pumps and the same. A roughly the same effect is achieved - as also provided for Use of hydraulic motors achieved.

It is assumed that the substances to be treated such as Milk powder, starch, vitamin supplements, etc.

already (more or less homogeneous) mixtures are packed in sacks stand by. For example, a batch is 1 Mp.

This material, which is available in sacks 12, is discharged via a sack emptying device 13, which separates the sack material from the contents, and via a screw conveyor 14 into the cooling chamber 10 and there through a pneumatic suction device 15 into a so-called Air mixer 16 promoted. The air required for said promotion is by a fan 17 from the room 10 and then together with the filling material through the as Pneumatic designated delivery line 15, in the interior of the mixer 16 and below Separation of the filling material by the filter present in the upper part of the mixer 16 19 sucked. On the pressure side of the fan 17, the conveying air freely enters the Refrigerator compartment 10 off. The filling material is retained in the mixer 16. In the delivery line 15 is a shut-off valve 18 which is closed when this described filling process is finished. Thereafter, the valve 20 is opened for the supply of the mixed air. That Fan 17 now sucks the air through - the valve 20 instead of - as - before - through the valve 18. The material contained in the mixer 16 is displaced by the air flowing through the valve 20 flows in, mixed and cooled. The required mixing time is about 2 minutes, With a system output of 1 Mp / h, the size of the mixer can increase to around 500 kp are designed so that for the cooling of the filled goods by the cooling flow a maximum of about 10 minutes are available. By this duration of the mixing time and Cooling time can have almost any cooling effect, so if necessary a very intensive one Cooling of the material to be sprayed can be achieved.

After the end of the mixing process, the material is placed in a storage container 21 drained. A belt weigher 22 (see drawing) connects to this buffer store 21. on, which is designed and designed so that it continuously a set amount of weight emits per unit of time. She gives the amount through a rotary valve 23 in a Pressure delivery line 24 from. This line 24 brings the good into one Inlet cyclone 25 in the head of the spray mixer 26. The drive for the conveying air flow in the line 24 consists of a fan 33, from which the line 24 branches off. In This line, as shown, is the material to be treated from the belt scale 22 bringing in rotary valve 23. The material flows are shown in the drawing marked by directional symbols (arrows), the most important treatment step is carried out in the spray mixer 26, in which, however, the material is already more homogeneous Mixture and largely correctly tempered is entered.

The mixer 26 consists of a sheet metal housing, which is preferably the has the shape shown in FIG. The housing wall enclosing the cavity of the mixer consists of a preferably cylindrical tube 27 of large diameter, whose upper end through a frustoconical roof 28 with inlets to be described is completed and its lower end also into a frustoconical Hopper 29 passes over.

The opening angle of the roof-side stump 28 is quite large. The opening angle of the funnel cone 29 depends on the tasks of this funnel and is generally smaller than that of the roof.

The wall elements forming the housing of the mixer 26 are rotationally symmetrical arranged on a common straight axis 30, which is the axis of the elements 27, 28 and 29 is. Those at the level of the smallest diameter of the frustoconical The opening remaining at the top cover 28 extends into an opening which is likewise rotationally symmetrical with respect to the axis 30 cylindrical part 31 over, in the middle of which the tubular entry end 32 of the cyclone entry device 25 lies. The axial height of the cylindrical part 31 as well as the other dimensions are of course based on the requirements of the task. Extends at the level of the boundary between the conical part 28 and the cylinder part 31 also from Cyclone inlet pipe 32 penetrated perforated bottom 38. The cylindrical part 31 has an air supply opening or an air supply nozzle 34. This air supply is provided with a control flap. 35 &. The inner of the housing of the mixer 26 is through a suction port 36 to a suction source connected in the form of a fan 37. This suction source causes that when open Control valve 35 air from this inlet 35, 34 through the cylindrical part 31 and the said perforated base 38 is sucked through the connection 36 to the blower 37.

The lower end of the funnel located in the lower part of the housing 29 merges into a cylindrical part 39 (it is not specifically mentioned here that all these parts are made of sheet metal hollow parts), the lower end of an air-permeable floor 40 is closed off. Above this floor is located an agitator 41, the axis of rotation of which preferably coincides with the geometric axis 30 and that of a gear motor 42 located outside the mixer housing driven through the air-permeable bottom 40.

Under the air-permeable floor, for example a sinter floor 40 is an air supply chamber 43, the bottom 44 of which is at the same time the bottom and closure of the entire mixer housing, this Luitz supply chamber 43 has one on the side Air inlet 46 - and the incoming air flow is through one in or in front of it Inlet regulating flap 45 controlled or regulated. A specialty b e St eh t: ar1 n * that the air sucked into the inlets 46 and 34 immediately dem Room 10 is taken.

The cylinder is located above the air-permeable base 40 or side wall of the housing section 39 has a discharge opening 47 to which a discharge or outlet device 48 is connected. The spout is with a regulating flap 49 provided. A rotary feeder 50 is arranged in the outlet itself Incoming product is discharged without air entering the housing through this sluice can flow.- -A Downpipe 51 guides the product through the cooling space boundary 11 to packing station 52.

The main cylindrical part of the housing includes an axis 30 cylindrical inner wall 53, which is open at the bottom and close to the truncated cone part at the top 28 is connected and its diameter is so much smaller than the diameter of the cylinder jacket 27 is that the air to be sucked out of the connection 36 is essentially unhindered by the annular cylinder space formed between the sheet metal walls 53 and 27 can flow away. In the cylinder wall 27 sits an additional air nozzle 54, which is so is directed that the air to be blown through them tangentially into the annular space 55 occurs between 27 and 53 and thereby the flow in this space becomes a vortex mixed with the intended effect that entrained solid particles to the Outer wall and thereby down to the fluidized bed, which is above the air-permeable soil 110 is located, are deposited. Resulting from these tasks also the dimensions and the position of the individual elements, so in particular the point at which the DUse 54 is the height of the partition or skirt 53 and the position of the suction connection 36. The latter is preferably at the top Place in the annular space 55 are arranged.

It is assumed that the order to be made in this arrangement Treatment of the starting material consists in spraying with a liquid. the Liquid, the powdery or granular material introduced by the cyclone 25 deposited - should l1 - is placed in a container 56 prepared over white and then supplied to spray nozzles 59 by means of a metering pump 57 through lines 58. It can be useful, as shown here, the pump 57 and the storage container 56 to keep outside the isolation room and the line 58 through the insulation 11 to pass through. In the radial direction, the nozzles 59 of the nozzle ring are inside of the cylinder 53 and outside the outer edge of the perforated bottom 38. They are there As high as possible under the cover 28. The direction of spray is to below and inward (towards the axis 30) directed into the connecting line 60 between the suction nozzle 36 of the spray mixer 26 and the suction fan 37 is a filter 61 used. The fan 37 sits directly on this filter 61 and generates the required negative pressure to be regulated by the regulating flaps 45 and 35 in mixer 26.

Through the described training and dimensioning of the spray mixer the following mode of action should be achieved: That through the cyclone 25- into the spray mixer 26 input material is whirling inside the cylindrical shell 53 evenly distributed and additionally by the air passing through the inlet 311 and the perforated bottom 38 flows in, directed downwards, It falls onto the air-permeable sintered floor 40, where it swirls intimately depending on the amount of the air flowing in via the inlet 46 will.

The agitator 41 prevents a classification (sighting) of the good is created on the fluidized bed. The air passes through the annular cylinder gap 55, the outlet 36, the line 60 and the filter 61 to the fan 37. By the additional Air nozzle 54 turns the air flowing upward into a helical motion forced within the annular gap 55 so that with flowing solid particles to the Outside wall get and in the flow boundary layer or by friction on the wall themselves are braked so that they fall down onto the fluidized bed. This The process is carried out by the large area between the inner jacket 53 and the outer jacket 27 of the mixer 26 is still significantly supported, since there is a relatively low The speed of the upstream flow prevails. In space within the inner jacket 53 is due to the design and appropriate dimensioning of the air inlet chamber 31 and the perforated bottom 38 provide a uniform, straight downward flow, which takes the solid particles with it. These particles are so through the cyclone or Centrifugal action from the central tube 32 into the ring area surrounding this tube below of the perforated bottom 38 brought and there as a result of the downward directed uniform flow from the chamber 31 in parallel, substantially forced straight paths. The spray into this falling stream of material Nozzles of the nozzle ring the liquid to be applied. Since the nozzles are high above below the ceiling 28 sit, they are not from the swirling entrained solid particles achieved. This eliminates the risk of the nozzles becoming dirty However, particles get directly under these spray nozzles and thus in their Effective area, especially since the nozzles spray inwards and downwards. That way it forms an agglomerate that arises freely in the spray area without mechanical stress. With this air flowing in from above as well as from below, appropriately tempered air if the product is brought to the correct temperature, this process can be a Cooling or heating.

The dwell time, which is the same as the maturation time for so-called "greasing" to crystallize out or to dry, can be adjusted by the regulating slide 49 Can be shortened or lengthened as required.

The special arrangement of the nozzles, so to speak, in a blind spot, where they cannot be reached by the solid particles introduced also that the spray can develop fully before it hits the whirled in Meets dry product. In addition to keeping the nozzles clean, there is also a pre-cooling (possibly also heating) of the finest liquid particles in the cold, inflowing air.

That caught by the automatic filter 61 which is self-cleaning Product is guided either to the outlet 48 or the belt scale 22, ie into the The flow of material is returned so that there is no loss for the process required cooling or hot air system can be installed so that for the heat exchanger at the wall of the room is sucked in or blown in.

The temperature control device, in the present case a cooling unit 62, is located outside of the room 10. The temperature controlled by this unit 62 Air is supplied to the air inlet 63 via the conduit 64 and there into the Room 10 headed. The air leaves the space 10 again through the outlet 65, from where from 6ie through an exchangeable filter 67 and the line 66 to the cooling unit or heat exchanger 6Z returned. By isolating the entire room 10 is not necessary the isolation of the individual units. The air tempered by the unit 62 can on can be taken from each point within the room 10. The insulation of lines is also omitted. According to a proposal of the invention, all elements are that disturb the desired temperature level within the room, shifted to the outside. In the present case, where cooling is required, there are also the llotoren to drive the fans 17, 33 and 37 outside of the room 10. You are by means of appropriate mechanical feedthroughs to the tools, here so connected to the fans. Advantageously, the fan and / or Conveyors driven by hydraulic motors.

Using a spray mixer with the essential features of the mixer shown became a milk replacer in a modified process with a very high fat content and excellent flowability on the following Wise made: The ilk powder was made using a cyclone, i.e. a centrifuge placed in the upper part of the liquor vessel.

Unlike the embodiment shown in FIG. 2, the powder was fed in from the side and exited the cyclone upwards. This enabled the Residence time and distribution improves soil because the particles are thrown upwards had to reverse their direction. The molten fat was sprayed through the spray nozzles 59.

At the rotary valve 50 was another fluid bed for cooling connected, from which the finished product is withdrawn via another rotary valve became. The cooling air was conducted in the following closed circuit: From a Cooling system, the cooled air was fed to the fluidized bed, where it was essentially the Finished good, which comes from the mixer 26 via the rotary valve 50 onto the fluid bed had been given, fluidized and cooled. From there it was withdrawn and one Filter fed, from which it filtered by means of a fan withdrawn and was fed back to the cooling system.

While in the previously known processes those dusted by powder Droplets of melted fat were cooled as quickly as possible so that the fat quickly crystallized and became manageable, became in what is to be described here Process the air that determines the temperature in the mixer, i.e. according to the Air supply at 35, 45 and 54 in the arrangement of FIG. 2, and also that of the fluidized bed floor supplied air kept relatively warm. Instead of the known method In the usual cooling, heating was carried out here, namely in the temperature range between OOC and 1000C. The preferred temperature range is between 1500 and 600C. One produces particularly good results Temperature range from 30 to 600C. The mixture also treated with hot air in the fluidized bed floor shows after the end of the treatment, the structure of a coarse, free-flowing granulate, comparable to coarse semolina. After leaving the fluidized bed, the property was As stated above, in a downstream cooling unit in the form of a fluid bed treated with cold air. The temperature of the cooling air is appropriately regulated, in such a way that it can also be changed if necessary, so that the temperature can be well adapted to the process.

The coarse, free-flowing material that accrues is despite the high Fat content almost stable to heat. It can be packed in bags or containers immediately. There is no longer any subsequent ripening in the packed state. The wettability and The solubility of this milk replacer is extremely good.

As a particularly favorable temperature range for the warm air for treatment the range from 30 to 600 has turned out to be. The best results became in-direct Reached near 500C.

The treatment method described above can be used with advantage in the apparatus described above. The departure from the usual Temperature treatment (cooling) and its replacement - by heating - is, however, also advantageous in conventional spray mixers, in which the powdery material is entered, with liquid Sprayed fat and then subjected to a certain temperature treatment, if this temperature treatment following the instruction given above is a heating is in the specified temperature range.

The renouncement of cooling and rapid crystallization of the fat Probably has better mutual penetration of fat and powder particles as a result, which initially leads to an agglomeration of larger particles, eventually but could lead to the isolation of the larger particles from each other.

Since the method described has two air currents at different temperatures requires, is useful when using a thermally insulated room isolate one of the two air currents within the room; in the described Trap this is the cooling air flow.

Another method using the facility just described leads to excellent results when applied to the manufacture of detergents. Laundry detergent usually consists of a drying agent, e.g. phosphate or perborate, those with liquid detergent substances, but also enzymes in the described Way is brought together. The dry matter is put into the mixer in powder form entered and then passed through a zone in which he was treated with detergent substances and similar liquids. In the facility just described, However, in which the upstream fluidized bed was not used, the product could be held for a while in the fluidized bed floor of the mixer, namely a period of time which was enough to let the detergent ripen. It could be immediately after Leaving the spray mixer to be packaged. By maintaining a temperature range from 12 to 200C, in particular by maintaining a temperature within this Area, a washing powder of excellent consistency was obtained.

Since there is no aftercooling in the fluidized bed, on the other hand the one that has to be observed Temperature range is narrow, it was particularly advantageous to use the apparatus in one To operate room that was overall at the desired treatment temperature.

Particularly advantageous within the specified temperature range was the range from 14 ° C to 170r When in doubt, all are described here and / or features presented individually or in any meaningful combination essential to the invention. Protection is desired for that which can objectively be protected.

Patent claims: Blank page

Claims (20)

Patent claims: Process for treating powdery or grainy Substances, namely cooling or heating and / or spraying with liquid or molten Additive or treatment substances in a rotationally symmetrical to the perpendicular axis Vessel that indicates that the substances to be treated entered as a vertebra with a vertical axis in the head of the vessel and then from an essentially axially parallel, downward gas flow carried along and through a spray zone in which the liquid or molten substances are sprayed on, and that this flow is undisturbed after a certain distance Movement meets a countercurrent rising from below, by setting its speed the sifter effect and / or the dwell time is determined. 2. The method according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that the gases entering the vessel (preferably air) correspond to the desired Process run to be tempered accordingly. 3. Apparatus for performing the method according to claim 1 with a vertical, rotationally symmetrical vessel that has a vortex insertion device in the middle of the vessel head has a the vortex inlet (25, 32) evenly surrounding gas inlet opening t38) for introduction the essentially axially parallel flow, through one of the two inlets Via a transitional piece (28) which is short in the axial direction and which adjoins downwards of the vessel on a cylindrical chamber, through a spray nozzle ring (59) in the upper Part of the enlarged vessel section and on a diameter larger than that outer diameter of the gas inlet opening is through a downward adjoining conical constriction (29), through one that closes off the vessel at the bottom Fluidized bed floor (40), which is connected to the source (45, 46) supplying the countercurrent, and through a gas outlet annular gap (68) above the conical constriction or in the area of their upper edge. 4. Apparatus according to claim 3, d a d u r c h g e k e n n -z e i c h n e t that the gas inlet in the top of the vessel is designed as a perforated base (38). 5, device according to claim 3 or 4, d a d u r c h g e -k e n n z e i c h n e t that the vortex introduction device (32) in the middle of the upper Gas inlet opens into the vessel (53, 27). 6. Device according to one of claims 3 to 5, d a d u r c h g e it is not indicated that the gas outlet annular gap (68) is the lower end of a forms annular cylinder-shaped chamber (55). 7. Apparatus according to claim 6, d a d u r c h g e k e n n -z e i c h n e t that the height of the annular cylinder chamber is approximately equal to the distance of the undisturbed Movement of the downward flow is (Fig. 2). 8. Apparatus according to claim 6 or 7, d a d u r c h g e -k e n n z e i c h n e t that in the annular space a gas, preferably air line (54) with opens in the tangential discharge direction, in such a way that the incoming gas flow (air flow) the gases flowing out through the annular gap (68) create a swirl with a separating effect granted. 9. Device according to claims 3 to 8, g e k e n n -z e i c h n e t d u r c h an agitator (41) directly above the fluidized bed floor, 10. Device according to claims 3 to 9, d u r c h e k e n n n z e i c h n e t that they get along with them feeding auxiliary units in one thermal isolated and temperature-controlled room (10) sits. 11. Process for the production of a milk replacer by storing them together from powdered milk and fat to grains by placing the fat in a liquid through a treatment vessel guided milk powder cloud is sprayed, with gas streams both for guiding as can also be used for thermal treatment of the fabrics, especially in one Device according to one of Claims 3 to 10, d u r c h g e k e n nz e i c h n e t that hot gas streams are used. 12. Process for the production of a milk replacer by storing them together from powdered milk and fat to grains by placing the fat in a liquid through a treatment vessel guided milk powder cloud is sprayed, gas flows both for guiding and can also be used for thermal treatment of the fabrics, especially in one Device according to one of Claims 3 to 1C, d u r c h g e k e n n -z e i C h n e t that the milk powder is warmed up when it is with the sprayed fat comes together. 13. The method according to claims 11 and 12, d a d u r c h g e k e It is noted that the temperature of the gas streams is between 00 and 1000C. 14. The method according to claim 13, d a d u r c h g e k e n nz e i c h n e t that the temperature is between 150 and 60 ° C, preferably between 30 and 600C lies. 15. The method according to claim 14, d a d u r c h g e k e n nz e i c h n e t that the temperature is close to 500C. 16. A method for producing a milk substitute feed according to a the method according to claim 11 to 15 in one Device according to one of claims 3 to 10, d u r c h g e n n n z e i c h n e t that the treated material is cooled immediately after leaving the vessel. 17. Device for performing the method according to one of the claims 11 to 16, d u r c h e k e n n n e i c h n e t that to the treatment vessel a cooling device in the form of a fluidized bed (fluid bed) is connected. 18. Process for the production of washing powder by spraying powdery ones or granular substances by means of liquid, active washing substances in a treatment vessel, through which the substances are passed through gas streams, in particular in the process after Claim 1, that the temperature of the substances leading gas streams between 12 and 200C, preferably between 14 and 17 0C kept will. 19. The method according to claim 18, g e k e n n n z e i c h n e t d u r c h its exercise in a device according to claims 1 to 10. 20. Device according to claims 3 to 10 and 17, d a -d u r c h e k e k e n n n n e i n e t, that the dry material by means of a centrifuge (cyclone) is entered, which the material in the upward direction within the treatment vessel dismisses.