JPH0629603U - Gas cooling recovery device - Google Patents

Abstract

(57) [Summary] [Purpose] Providing a condensing collector with a relatively long life and capable of effectively liquefying and recovering gas, and eliminating high-concentration exhaust gas in the initial stage of operation, and also easily liquefying Providing a cooling and recovery device for gas that can liquefy and recover the gas that is not used. [Structure] The suction pump was not used, and only the compression force of the compressor was used. A closed cycle was used until the condenser / collector became sufficiently cold. Further, the coil of the condenser / collector is connected to the suction part of the ejector to make a negative pressure, and the temperature is further lowered to obtain a cryogenic temperature to liquefy the gas.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas cooling and recovery device that absorbs and recovers various organic solvents, halogen-based organic solvents, and other gases.

[0002]

[Prior art]

 Conventionally, a gas cooling and recovery device has been provided for recovering the various gases described above. However, each of the above-mentioned conventional recovery devices has the following drawbacks. First of all, pumps are used in various places in the equipment to transfer liquid, but the packing of this pump is dissolved in the liquid such as the solvent to be recovered and cannot be used, and the life of the entire equipment is shortened. .

Another problem is that there is no condensing collector that can effectively cool and recover. Another problem is that a high concentration of exhaust gas may be discharged during the initial recovery, that is, it takes time to reach a sufficient operating state, during which time the recovery cannot be completed.

Another problem is that some gases are not easily liquefied and their recovery is difficult.

[0005]

[Problems to be solved by the device]

 The present invention has been made in order to solve such various problems, and an object thereof is to provide a gas cooling and recovery device which can relatively prolong the service life. Still another object is to provide a condensing and recovering device which can effectively cool and recover. Another object is to provide a device which does not discharge high concentration gas in the initial stage of recovery.

Another object of the present invention is to provide a device that can liquefy and recover even a gas that is not easily liquefied.

[0007]

[Means for Solving the Problems]

 This invention, which achieves the above-mentioned object, will be described as follows: a compressor 3 in communication with a suction passage 2 having a suction port 1; a recovery liquid tank 5 in communication with the compressor 3 via a condenser 4; A supply port 7 communicated with the water separator 6; a condensation collector 8 communicated with the recovery liquid tank 5; and a refrigerator 9 communicated with the condensation collector 8. It is a gas cooling and recovery device.

In addition, a cylindrical housing 11 of the condenser / collector; a cooling coil 12 provided in a spiral winding in the housing 11; a refrigerator 9 connected to the coil 12; and one of the housings 11 Formed gas supply port 13; Discharge port 14 formed on the other side of the housing 11; Recovery port 16 formed on the bottom 15 of the housing 11; Between adjacent pipes 17, 17 of the coil 12 A gas, which is formed by inserting a metal, has a cut 18 extending from the outer periphery to the central portion, and is composed of plate members 19; both sides of which are bent in opposite directions. This is a cooling and recovery device.

Further, a compressor 3 connected to a suction passage 2 having a suction port 1; a recovery liquid tank 5 connected to the compressor 3 via a condenser 4; a condensation connected to the recovery liquid tank 5 Recovery device 8; refrigerator 9 connected to the condensation recovery device 8; discharge passage 20 for clean gas communicated to the condensation recovery device 8; communication with a three-way valve 21 in the middle of the discharge passage 20 and the suction passage 2 is a communication pipe 23, which is connected by a three-way valve 22, and is a gas cooling and recovery device.

A condenser 26 in communication with the compressor 25; a first coil 29 of a cooling device 28 in communication with the condenser 26 via a first expansion valve or a capillary 27; The first coil 29 communicated via a zector 30; the second coil 32 of the cooling device 28 communicated with the condenser 26 via a second expansion valve or capillary 31; the second coil 32 communicated with the second coil 32. The ejector 30 is made to operate; a gas passage 28e formed in the cooling device 28; and a liquid recovery port 28d provided in the cooling device 28;

[0011]

[Action]

 Since the present invention is configured as described above and uses only the compressor 3 that sucks and compresses gas as power and does not use the pump that sucks liquid, the packing of the compressor can have a relatively long service life. The life of the entire device can be made longer than that using a conventional liquid suction pump.

Also, between the adjacent pipes 17 of the condenser 12 for condensing and recovering, a cut 18 is formed which is made of metal and extends from the outer periphery to the central portion, and both sides of the cut 18 are opposite to each other. Since the bent plate member 19 is provided, the gas flow can be made smooth, and at the same time, the passage process of the gas can be lengthened and the cooling during the gas flow can be made good, so that liquefaction is effectively recovered. be able to.

In addition, by connecting the three-way valve 21 to the middle of the gas discharge passage 20 and connecting the communication pipe 23 to the suction passage 2 by the three-way valve 22, it is possible to operate the gas Since a closed circuit can be formed and circulated until the temperature of the condenser / collector is sufficiently reduced, the exhaust gas of high concentration is discharged into the atmosphere even at the initial stage. It can be prevented.

In the condenser / collector, the first coil 29 is communicated with the ejector, and the second coil 32 is communicated with the ejector 30, so that a negative pressure is generated in the second coil 32 and the temperature is further lowered. Therefore, an extremely low temperature or a low temperature close to it can be generated, and even a gas that is not easily liquefied can be liquefied and recovered.

[0015]

【Example】

 In FIG. 1, reference numeral 1 denotes a suction port of the suction passage 2, which is opened inside the cleaning tank 36 as an example. 37 is a volatile organic solvent and 38 is a cooling pipe. Next, 3 is a compressor, which communicates with the recovery liquid tank 5 via a condenser 4. Reference numeral 39 indicates a pulsation absorption tank, and 40 indicates a suction device. The condenser 4 is provided with a cooling water passage 42 around the flexible pipe 41 as an example.

Next, a recovery liquid tank 5 stores the liquid liquefied by the condenser 4. The gas that has not been liquefied is sent to the condensing and collecting device 8. All of these motive powers are provided only by the compressor 3.

The condensing / recovering device 8 is provided with a housing 11 and a cooling coil 12 wound in a string in the housing 11, and a refrigerator 9 is connected to the cooling coil 12. Reference numeral 13 is a gas supply port, 14 is a discharge port, and 15 is a bottom part, and a recovery port 16 is formed therein, and between the adjacent pipes 17, 17 of the coil 12 is shown in FIGS. 3 and 4. As shown in the figure, the plate body 19 is formed with a cut 18 extending from the outer periphery to the center, and both sides of the cut 18 are bent in opposite directions. The plate body 19 is formed in a layer shape and in a substantially spiral shape to form a long gas passage and a large cooling area so that the plate body 19 is effectively cooled. ing.

Next, in FIG. 1, reference numeral 23 is a communication pipe, which is connected to the middle of the discharge passage 20 by a three-way valve 21 or to the suction passage 2 by a three-way valve 22. Further, 34 is a temperature sensor, which detects the temperature of the housing 11, and when the temperature is lowered to a predetermined temperature, the discharge passage, the three-way valve 21, the communication pipe 23, the three-way valve 22, the compressor 3, the housing 11 is detected. The closed cycle in which the flow is sequentially stopped is stopped, and the three-way valve 21 opens to one side, goes out in the direction of arrow A21, and is released into the atmosphere.

In this case, as an option, a cartridge 21a filled with activated carbon is provided at the outlet. Then, the cooled gas is easily adsorbed on the activated carbon, and when the adsorption is completed, it is set in the suction device 40 of FIG. 1 and sucked by the compressor. In this case, the rear part of the cartridge 21a is formed in a net-like shape so that carrier air can enter from the rear. At this time, the heat generated by the compressor 3 allows the gas to be desorbed favorably.

Next, in FIG. 1, 6 is a water separator, and 6a is water. Then, the solvent from which water has been separated is supplied to the cleaning tank 36 from the supply port 7 as an example. Next, FIG. 2 shows another embodiment of the present invention, in which 25 is a compressor and 26 is a condenser. Reference numeral 27 denotes a first expansion valve or a capillary tube, and a first coil 29 of a cooling device 28 is provided in communication with the first expansion valve or the capillary tube. The first coil 29 is in communication with the compressor 25 via an ejector 30, and the second coil 32 of the cooling device is in communication with the suction portion 30a of the ejector 30. Is pre-cooled by the first coil to -30 ° C, and the second coil becomes negative pressure by the ejector 30 and is further cooled to -50 ° C to -80 ° C as an example. It can be collected. Reference numeral 30b indicates a nozzle of the ejector 30.

The cooling device 28 is, for example, formed in the shape of a closed container, has a gas inlet 28a and an outlet 28b, and a liquid recovery port 28d at the bottom 28c. 28e indicates a gas passage.

In FIG. 2, the inner diameter of the pipe A is large, and the inner diameter of the pipe B is smaller than that of the pipe A, so that the supply amounts are different. The operation of the apparatus shown in FIG. 1 is substantially the same as the operation of the present invention described above, and therefore will be omitted.

[0023]

[Effect of device]

 The present invention, which is configured as described above, can provide a gas cooling and recovery device that can have a relatively long life. Further, it is possible to provide a condensing and recovering device that can effectively cool and recover the gas. Further, it is possible to provide a device capable of preventing discharge of high-concentration gas at the initial stage of operation. Further, it is possible to provide a device that can easily liquefy and recover a gas that is not easily liquefied.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention and showing an outline of a gas cooling and recovery apparatus.

FIG. 2 is a schematic view of a gas cooling and recovery apparatus according to another embodiment of the present invention.

FIG. 3 is a perspective view of a portion of the apparatus according to the embodiment of the present invention.

FIG. 4 is a perspective view of the same portion.

[Explanation of symbols]

 1 Suction Port 2 Suction Passage 3 Compressor 4 Condenser 5 Recovery Liquid Tank 6 Water Separator 7 Supply Port 8 Condensation / Recovery Device 9 Refrigerator 11 Housing 12 Cooling Coil 13 Supply Port 14 Discharge Port 15 Bottom 16 Recovery Port 17 Pipe 18 Break 19 Plate 20 Discharge passage 21 First three-way valve 22 Second three-way valve 23 Communication pipe 25 Compressor 26 Condenser 27 First expansion valve or capillary tube 28 Cooling device 29 First coil 30 Ejector 31 Second expansion valve or capillary tube 32 Second Coil 33 suction part

Claims (4)

[Scope of utility model registration request] 1. A compressor 3 in communication with a suction passage 2 having a suction port 1; a recovery liquid tank 5 in communication with the compressor 3 via a condenser 4; and a water separator 6 in the recovery liquid tank 5. A cooling and recovering apparatus for gas, comprising: a supply port 7 communicated through the gas; a condensing and recovering device 8 in communication with the recovering liquid tank 5; and a refrigerator 9 in communication with the condensing and recovering device 8. 2. A cylindrical housing 11 of the condenser / collector;
A cooling coil 12 provided in a spiral winding in the housing 11; a refrigerator 9 communicating with the coil 12; a gas supply port 13 formed in one side of the housing 11; formed in the other side of the housing 11. A discharge port 14; a recovery port 16 formed on a bottom portion 15 of the housing 11; a metal member provided between the adjacent pipes 17 of the coil 12 and provided from the outer periphery to the central portion. A cooling and recovery apparatus for gas, characterized in that a cut line (18) is formed, and both sides of the cut line (18) are plate bodies (19) bent in opposite directions. 3. A compressor 3 in communication with a suction passage 2 having a suction port 1; a recovery liquid tank 5 in communication with the compressor 3 via a condenser 4; a condensation recovery device in communication with the recovery liquid tank 5. 8: Refrigerator 9 communicating with the condensing and collecting device 8; Clean gas discharge passage 20 communicating with the condensing and collecting device 8; Communication with a three-way valve 21 in the middle of the discharge passage 20 and to the suction passage 2 , A gas cooling and recovery device comprising a communication pipe 23 connected by a three-way valve 22. 4. A condenser 26 in communication with the compressor 25; a first coil 29 of a cooling device 28 in communication with the condenser 26 via a first expansion valve or a capillary tube 27; an ejector 30 in the compressor 25. The first coil 29 communicated via
A second coil 32 of the cooling device 28 in which the condenser 26 communicates with a second expansion valve or a capillary 31; an ejector 30 in communication with the second coil 32; and a cooling device 28. Gas passage 28e; the cooling device 2
8. A gas cooling and recovering device comprising a liquid recovering port 28d provided in FIG.