JPS59501939A - Method and equipment for dehydrating liquid or pasty mixtures - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] A method and apparatus for dehydrating a liquid or paste-like mixture A method of dehydrating a mixture, especially a method of dehydrating such a mixture into powder or granules. It is related to The present invention still includes an apparatus for carrying out such a method. Various industrial processes include one or several types of dewatering steps. For example, powdered or For example, to obtain granular final products or to treat certain contaminated wastes.

In either case, the large amount of water to be removed requires extremely large amounts of energy. consumed. The dehydration method of the present invention is very energy efficient and can be used at industrial level. It is particularly suitable for laboratory-level and small-scale production applications due to its high efficiency. It can also be applied to the confectionery industry.

To this effect, the present invention provides a method for applying microwave and centrifugal force to liquid or cylindrical mixtures. A method for dehydrating a liquid or paste-like mixture, characterized by the simultaneous action of It is related to.

In the best embodiment of the dehydration method defined above, the mixture is heated in a microwave radiator. It is very evenly milled and distributed around the During the heart separation process, microwaves can be used to work most effectively on the mixture. I will do it.

The invention also provides a method for receiving said mixture mounted for rotation about an axis of symmetry. A processing tank to be placed in, a device for rotating this processing tank, and a device inside the processing tank. and at least one submerged microwave generator. The present invention also relates to a dehydrating device for a mixture of (or).

According to one embodiment, the rotating shaft of the treatment tank is hollow and houses a microwave generator. and can be effectively protected.

According to another embodiment, the microwave generator is located in the bottom center of the processing tank. It is housed in a glass tube that is an extension of the rotating shaft.

The present invention has been described by way of example only in conjunction with the accompanying drawings, in accordance with the principles of the invention. From the description of the water device, it will be better understood and other features of the invention will become apparent. Dew.

FIG. 1 is a schematic and partially cut away elevational view of a device according to the invention.

Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is the manufacturing of the device shown in Figure 1. Schematic elevational view, partially broken away, of a variant of Figure 4 shows an example of the installation of the apparatus of Figure 3 in a liquid mixture concentration and drying process. FIG. 2 is a schematic side elevation view.

In FIG. 1, the device is arranged around an axis of symmetry formed by a hollow shaft 12. A processing tank 11 mounted to rotate, and a processing tank submerged in the processing tank 11. In a special configuration, a microwave generator 13 is installed in the hollow shaft 12. ．． 14.15 (usually referred to as a "magnetron"). During ~ The empty shaft 12 is maintained in a vertical position by bearings 16a and 16b of the frame 16. ing.

In the embodiment shown here, the treatment tanks 11 are assembled on their respective bases. It mainly consists of two concentric conical sections 17 and 18. Lower conical part 1 7 is very spread out in the shape of a morning glory and forms a reservoir for the mixture to be processed. . The mixture is fed through the lower pipe 19 and passes through the ring formed around the shaft 12. It enters the conical part 17 through the shaped space 20.

This annular space has a fixed lower collar 21 into which the pipe 19 opens and a processing It is formed by the upper collar 22 which is integrated with the tank 11 and has a side hole. , whose inner diameter is adjusted to the outer diameter of the fixed collar. Radial partition wall 2 3 is fixed inside the hollow shaft 12, and a set of two conical parts 17 and 18 is formed. It is inserted between the outsides of vertical flanges 17a and 18a. This allows the processing tank to 11 is rotated. Due to the large opening 24 made near the outer edge of this partition wall, , the mixture is sent to the top of the device by centrifugal force. A processing tank formed by the sleeve 29 The processing tank rotates around the shaft 12 by an upper bearing 25 provided at the upper part of the tank. Improved stability during operation.

The conveying device forming the spiral screw conveyor 28 serves as a processing tank. child In Nodame, said device forming a helical screw conveyor is mounted on the shaft 12. The shaft 12 protrudes above the processing tank, and the shaft 12 is connected to a sleeve 29 that is A pulley 30 driven by a belt 31 is attached to this.

Further, a device for rotating the processing tank 11 is attached to the shaft 12 above the sleeve 29. It includes a pulley 22 which is attached and moved by another belt 33. belt 3 1 and 33 are parallel and attached to the same motor (not shown).

The difference in rotational speed between the processing tank and the conveying device forming the helical screw conveyor is , can be determined by making a slight difference in the diameters of pulleys 30 and 32. Ru. This conveying device, which forms a helical screw conveyor, is generally cage-shaped. , the vertical column 35 protrudes in the direction of the inner wall surface of the treatment tank, and the vertical column 35 is arranged to It also forms a spiral passageway that allows coarse parts to be carried slowly towards the top of the device. It is attached to the blade 36 which is made of The upper horizontal member 37a connects the pillar 35 with three The lower cross member 37b connects the column rigidly to the shaft 29 mounted below. It is rigidly connected to the receiver 37c so that the shaft 12 can be rotated. dry A device is installed at the top of the treatment tank for discharging the product. It is processing A ring-shaped container 38 surrounding the upper part of the tank 11 and a discharge pipe 39 extending from the container It consists of In that regard, the treatment tank forms a helical screw conveyor 28. It includes several lateral holes 40 located near the top of the conveyor and opening into the container 38. nothing. This conveying device 28 cooperates with the conical surface 27 and therefore has a similar overall shape. are doing. That is, the pillar 35 is defined on an imaginary truncated conical cylinder concentric with the hollow shaft 12. It is produced at regular intervals. The shaft 12 is divided into two parts. That is, , the lower part 42 accommodates microwave generators aligned in the axial direction in this space of the shaft. The upper part 43 (separated from the upper part 42 by a part 44) is attached to the frame 1. 6, including a horizontal hole 45 extending to the outside of the processing tank and opening into the processing tank. , forming means for discharging gases and water vapor generated during processing of the mixture. Therefore The upper part 43 ends in a discharge pipe 46 with a suction device 47.

The microwave generator 13.14.15 is connected to a wire 48 passing through the lower end of the shaft 12. Power is supplied. An aperture 49 is provided laterally in the shaft 12 facing each generator; These openings form an inner wall 27 and a conveying screw conveyor 28. It extends radially through a hollow guide 50 facing the device.

The operation of the device of the invention is as follows. In other words, the mixture to be treated is placed in a treatment tank. The processing tank 11 is continuously fed into the container formed by the conical part 17 of the Rotate and energize the microwave generator. Centrifugal force forces the mixture to the bottom of the conveyor 28. Continuously move to the next section. Due to the action of the helical screw conveyor, this mixture It is not dispersed in a relatively thin layer around the microwave generator 13.14.15. slowly move it to the top of the treatment tank. The mixture rises while being constantly broken down and at the same time Since the heat maintained by the generator is maintained in a thin layer near the inner wall surface 27, Act on the mixture with maximum efficiency. The generated water vapor is transferred to the duct 46 and the suction device. It is sucked through the opening 45 by the holder 47 and discharged. Dry product is in container 38 It enters and is discharged by the pipe 39.

FIG. 3 shows a modification of the device shown in FIG. 1, according to which the action of microwaves is The joint action of centrifugal force and microwaves is the best way to remove You can increase the water effect.

For this purpose, each hollow guide placed facing the microwave generator having a plurality of inclined guide tubes separated by partition rings with triangular cross-sections; .

Regarding this figure, parts that are the same as those in Figure 1 have the same reference numbers plus 100. Indicated by This will make reference easier.

As shown in FIG. 3, each hollow guide portion 150 has a shape that expands in the axial direction. However, several guide tubes 150a separated by a partition ring 151 with a triangular cross section, It has 150 b and 150 c. Furthermore, two axially adjacent guide tubes For example, a lateral part having a hexagonal cross section is formed on the periphery of the shaft 112 between the parts. Material 152 is produced. Dispersion blades 153, 154 near the radiating antenna and are arranged above and below the guide part 150.

In this way, the wall 127 of the housing 111, the cross member 152 and the microwave A resonant chamber 155 is formed between the interior 150 and an adjacent wall. This surrounding part 155 The surface portion defining the microwaves radiated from antennas 113 and 114 It is most desirable to make it from a reflective material. microwave radiated from antenna In this way, the exits 150a, 150b of the guide tubes.

The inner wall 127, the cross member 152 and the guide part 1 are divided into a number of reflection paths at 150c. 50, and its intensity does not decrease. As a result, the inner peripheral surface of the treatment tank It acts more uniformly and over a wide range on the mixture that is subjected to centrifugal force.

The triangular partition ring 151 directs the emitted microwaves to the wall 127 that they are about to hit. giving a clear direction of inclination to The side surfaces re-reflect the microwaves reflected by the wall and cause the mixture to be treated. It will be seen that it participates in the distribution.

Furthermore, all the elements of the microwave reflecting vessel, in particular the guide part 150, the cross member 1 52 and the inner wall 127 of the treatment tank are made of microwave generator material such as stainless steel. You will see that it is made.

In the embodiment shown, the microwave generator or magnetron 113,114 is , is fixed in a glass tube 156 placed within the hollow shaft 112. those can still be rotatably mounted, in which case its power supply can be connected to a rotating connection. This is done using a point unit (not shown).

To prevent the microwaves generated by the microwave generator from being dissipated to the outside unnecessarily. , a shielding plate 157 is provided to seal the microwave inside the device. It is glass tube 156 and laterally disposed within the distal end 143 of the hollow shaft 112 .

Figure 4 shows the dehydration process of the present invention in the process of concentrating and drying sludge and liquid mixtures. Indicates the use of the device. Unprocessed product passes through pipe 202 to a storage tank or buffer. It is sent to the device 203 and discharged from the bottom of the device and is subjected to centrifugal force and by the pump 204. It is sent to a separation/concentration device 205 that has an ultrasonic effect. This device separates The composed water is discharged through a pipe 207 and reused. The concentration of this device 205 From the condensate outlet, a pump 206 sends the concentrate to a dewatering device 208 of the present invention.

The dried product is transferred to an inclined track terminating in a conveyor belt 210. It comes out from Ip209. Water vapor is exhausted by another pipe 211 . Conveyor Bell) 210 is a helical screw conveyor depending on the condition of the dried product. It can be replaced by

The device described above can be used advantageously in many applications. First, food products In industry, it can be used to collect blood at slaughterhouses. Especially Tamba This is to prepare a powder that is a raw material rich in texture. The same equipment is also used in dairy farming. It is used in the processing of whey (better known as 'skimmed milk').

At sewage treatment plants, sludge is treated with this device to produce applied biological materials. The raw materials for the production of biological fertilizers and/or applied biological gases are supplied. Haruna's work Drying of wastes resulting from industrial processing would also be possible with such a device.

Finally, the low throughput devices of the invention are suitable for confectionery industries and laboratories. 0 The present invention is not limited to the embodiments described above, and those skilled in the art will It includes such changes as may be made within the knowledge of the person concerned.

Figure 3 Figure 4 Procedural amendment (voluntary) Ill 59 moves June IS'' day PCT/FR83100202 Relationship to the incident: Patent applicant 7. Subject of correction (1) Translation of the specification, translation of the scope of claims & contents of the original statement 9. List of attached documents (1) Translation of the specification: 1 copy (2) Translation of the scope of claims: 1 copy patent application agent Procedural amendment (formality) %formula% 3. Person making the amendment Relationship to the incident: Patent applicant , Date of amendment order: August 2, 1980 (Shipping date: August 7, 1980), Number of inventions increased by amendment (1) Engraving of the translation of the drawing (no changes to the content).

(2) Supplementation of power of attorney and its translation.

9. List of attached documents (1) One translation of the drawing (2) Power of attorney and the same translation (one series each) Loss of international training

Claims (1)

[Claims] 1. Microwave (13, 14, 15) and centrifugal force ( 11) for a liquid or shish-like mixture characterized by the simultaneous action of Dehydration method. 2. Crushing and distributing the mixture throughout the microwave generator. A method according to claim 1, characterized in that: 3. A process that can rotate around the left-right symmetry axis (12) and accept the mixture. a tank (11), a device (32, 33, 23) for rotating this treatment tank, and At least one microwave generator (13, 14, 15) A device for dehydrating a liquid or pasty mixture, characterized by comprising: Place. 4. The processing tank (11) has at least one microwave generator (13, 14, 1 5) is mounted so as to rotate around a hollow shaft (12) that houses the The dewatering device according to claim 3, characterized in that: 5. It is provided along the inner wall surface (27) of the processing tank, and is formed around the left-right symmetry axis. Helical screw controllers are mounted to rotate at different speeds. A conveying device forming a conveyor (28) and a container (38) are formed in the upper part of the processing tank. means (38) for discharging the product to be dried, communicating with the outlet (40) , 39). Device. 6. The conveying device projects in the direction of the inner wall surface (27) and forms a spiral passage. Device according to claim 5, in the form of a cage with blades (36) . 7. The conveying device (28) is configured to rotate the shaft (12). The sleeve (29) is connected to the processing tank (11). It protrudes to the outside of the body. characterized in that a pulley (30) or its equivalent is connected to said sleeve. The dewatering device according to claim 5 or 6. 8. The hollow shaft has a lower part (42) containing at least one microwave generator; , protrudes to the outside of the treatment tank and also passes into the treatment tank and is generated during the treatment of the mixture. including a lateral hole (45) forming a reservoir means for venting gas and/or water vapor; Claims 4 to 4, characterized in that the invention comprises two parts: an upper part (43); The dehydration device described in any of Item 7. 9. The opening (49) faces the microwave generator or each thereof and the medium shaft (12) ), and these openings open facing the inner wall surface (27). characterized in that it is extended in the radial direction by a respective hollow guide part (50). A dewatering device according to any one of claims 4 to 8. 10. The processing tank has two conical parts assembled by their respective largest bottom parts. (17, 18), and the conveying device substantially faces the inner wall surface of the upper conical part. The lower circular, conical part constitutes a container for said mixture. An apparatus according to any one of claims 5 to 9, characterized in that: 11. A hollow chamber that guides the microwaves generated by the microwave generator. The guide part (150 in Figure 3) is separated by a partition ring (151) having a triangular cross section. A plurality of guide tubes with different slopes (150a-, 150b% 1 10. The dewatering device according to claim 9, characterized in that the dewatering device has a dewatering capacity of 50 c). 12. A circle of the shaft (112) is further inserted between two axially adjacent guide parts (150). It includes a cross member (152) provided on the circumference, which cross member is connected to the adjacent wall of the guide part and the treatment tank. (111)... Along with the inner wall surface (127) of the uzing, the microwave reservoir The dehydration device according to claim 11, characterized in that a resonance chamber D55) is formed. Place. 13, the cross member (152) forming the resonance chamber (155), the guide part (150) and and the inner wall surface (127) are made of a material that reflects microwaves. The dewatering device according to claim 12. 14. Claim 1, wherein the material that reflects microwaves is stainless steel. Dehydration device according to item 3. 15. A microwave generator (113, 114) is provided inside the hollow shaft (112). Claim characterized in that it is installed in a housed glass tube (156). A dehydration device according to any one of items 11 to 14. 16. A microwave shielding plate (157) is placed inside the glass tube (156) across it. and the same shielding plate is provided on the opposite part (143) of the hollow shaft (112). 16. The dewatering device according to claim 15, characterized in that the dewatering device can be 17. Adjacent to the guide portion (150) in the axial direction, there is also an angled diffusion blade. Any one of claims 11 to 16 further including (153, 154) Dehydration equipment described in. 18. Liquid mixing including centrifugal and ultrasonic separation and concentration devices (205) Claims characterized in that it is installed in a concentration and drying facility for products An apparatus for carrying out the process described in item 1. Engraving (no change in content)