Emptying and recycling device for air separation

Abstract

An air separation emptying recovery device comprises a round pipe and air separation equipment, the rear end face of the round pipe is communicated with the front face of the air separation equipment, the front face of the round pipe is connected with a spraying structure, the front face of the spraying structure is connected with an air inlet pipe, and a water drainage pipe is connected to the lower portion of the front face of the spraying structure. The front side and the rear side of the top of the round pipe are connected with filtering structures correspondingly. Air in the spraying structure is fed into the shell, the air makes contact with the sprayed sodium hydroxide solution to react, carbon dioxide in the air reacts into sodium carbonate and water, then the sodium carbonate and the water are mixed with the falling sodium hydroxide solution to be discharged at the water discharging pipe, the remaining air enters the straight pipe through the rear portion of the shell, and cleaning of the carbon dioxide in the air is achieved. And the fractionation effect of the air separation emptying recovery device is ensured, and the normal use of the air separation emptying recovery device is ensured.

Description

Technical Field

[0001] This utility model relates to an air separation venting and recovery device, and more particularly to an air separation venting and recovery device. Background Technology

[0002] The air separation venting and recovery unit achieves 100% oxygen recovery and utilization through in-depth optimization and recycling of the vented oxygen.

[0003] For example, a recovery device for oxygen released from air separation, with application publication number "CN113587550A", has an air filter output connected to an air compressor, an air compressor output connected to an air cooler, and the other end of the air cooler connected to a molecular sieve. Gas purified by the molecular sieve is input to a circulating booster, the output of which is connected to the booster end of an expander, and the expander end connected to a distillation column. This proposed air separation device can effectively recover and utilize oxygen, and simultaneously produce liquid oxygen, liquid nitrogen, and liquid argon. While the device is functional, it requires the removal of moisture, impurities, and carbon dioxide from the air during operation. Relying solely on a filter structure results in poor carbon dioxide removal, leaving residual carbon dioxide in the air. This affects subsequent air cooling and fractionation, thus reducing the fractionation efficiency of the air separation recovery device and impacting its normal operation. Summary of the Invention

[0004] This invention aims to solve the problems existing in the prior art by providing an air separation venting and recovery device that ensures the fractionation effect of the air separation venting and recovery device and guarantees its normal operation.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: This air separation and venting recovery device includes a circular tube and an air separation device. The rear end face of the circular tube is connected to the front face of the air separation device. A spray structure is connected to the front face of the straight tube. An air inlet pipe is connected to the front face of the spray structure. A drain pipe is connected to the lower front face of the spray structure. Filter structures are connected to the front and rear sides of the top of the circular tube, respectively.

[0006] To further improve the system, the spray structure includes an outer shell and vertical pipes. The rear end face of the outer shell is connected to the front face of the round rod. The top of the outer shell is connected through the outer wall of multiple vertical pipes. The bottom of the vertical pipe is connected to a nozzle, and the top of the vertical pipe is connected to a straight pipe.

[0007] Further improvements include connecting the front side of the outer casing to the rear end face of the air intake pipe.

[0008] Further improvements include connecting the lower left and right sides of the front of the outer casing to the rear ends of two drain pipes, respectively.

[0009] Further improvements are made to the filter structure, which includes vertical cylinders and filter screens. The bottoms of the two vertical cylinders are connected to the front and rear sides of the top of the circular tube, respectively. The inner wall of the front vertical cylinder is inserted into the outer wall of the filter screen, and a moisture-absorbing plate is inserted into the inner wall of the rear vertical cylinder. Vertical rods are fixed to the top left and right sides of the filter screen and the moisture-absorbing plate, and a top cover is inserted into the top of the outer wall of the vertical cylinder.

[0010] Further improvements include inserting the top circular opening of the top cover into the outer wall of the upright.

[0011] The beneficial effects of this utility model are as follows: In this utility model, air is sent into the outer shell through the spray structure. The air comes into contact with the sprayed sodium hydroxide solution and reacts, causing the carbon dioxide in the air to react into sodium carbonate and water. Subsequently, the water mixes with the falling sodium hydroxide solution and is discharged through the drain pipe. The remaining air enters the straight pipe through the rear of the outer shell, thereby cleaning the carbon dioxide in the air, ensuring the fractionation effect of the air separation venting and recovery device, and ensuring the normal use of the air separation venting and recovery device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 A schematic diagram showing the connection relationship between the outer shell, vertical tube, and inclined block;

[0014] Figure 3 for Figure 1 A schematic diagram showing the connection structure between the central vertical pipe, the nozzle, and the straight pipe;

[0015] Figure 4 for Figure 1 A schematic diagram showing the connection relationship between the straight pipe, the vertical cylinder, and the filter screen;

[0016] Figure 5 for Figure 1 A schematic diagram showing the connection structure between the central vertical cylinder, the top cover, and the uprights.

[0017] Explanation of reference numerals in the attached drawings: 1. Circular pipe; 2. Spray structure; 201. Outer shell; 202. Vertical pipe; 203. Nozzle; 204. Straight pipe; 3. Filter structure; 301. Vertical cylinder; 302. Filter screen; 303. Moisture-absorbing plate; 304. Upright pole; 305. Top cover; 4. Air separation device; 5. Air inlet pipe; 6. Drain pipe; 7. Inclined block. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Example 1:

[0020] See attached document Figure 1-5 In this embodiment, an air separation and venting recovery device includes a circular pipe 1 and an air separation device 4. The rear end face of the circular pipe 1 is connected to the front face of the air separation device 4. The model of the air separation device 4 is selected according to the usage requirements. A spray structure 2 is connected to the front face of the circular pipe 1. An air inlet pipe 5 is connected to the front face of the spray structure 2. A drain pipe 6 is connected to the lower front face of the spray structure 2. Filter structures 3 are connected to the front and rear sides of the top of the circular pipe 1, respectively.

[0021] The spray structure 2 includes an outer shell 201 and a vertical pipe 202. The rear end face of the outer shell 201 is connected to the front face of the circular pipe 1. The top of the outer shell 201 is connected to the outer wall of multiple vertical pipes 202. The bottom of the vertical pipe 202 is connected to a nozzle 203. The model of the nozzle 203 is selected according to the usage requirements. The top of the vertical pipe 202 is connected to a straight pipe 204. The front face of the outer shell 201 is connected to the rear end face of the air inlet pipe 5. The lower left and right sides of the front face of the outer shell 201 are respectively connected to the rear end faces of two drain pipes 6.

[0022] Air is fed into the outer casing 201 through the spray structure 2. The air reacts with the sprayed sodium hydroxide solution, causing the carbon dioxide in the air to react into sodium carbonate and water. The water then mixes with the falling sodium hydroxide solution and is discharged through the drain pipe 6. The remaining air enters the circular pipe 1 through the rear of the outer casing 201, thus cleaning the carbon dioxide in the air. This ensures the fractionation effect of the air separation venting and recovery device and guarantees its normal operation.

[0023] The filter structure 3 includes vertical cylinders 301 and filter screens 302. The bottoms of the two vertical cylinders 301 are connected to the front and rear sides of the top of the circular tube 1, respectively. The inner wall of the front vertical cylinder 301 is inserted into the outer wall of the filter screen 302. The filter screen 302 is an activated carbon mesh plate. The inner wall of the rear vertical cylinder 301 is inserted into a moisture-absorbing plate 303. The moisture-absorbing plate 303 is made of organic polymer (such as polyacrylic acid). The top left and right sides of the filter screen 301 and the moisture-absorbing plate 303 are fixedly connected to uprights 304. The top of the outer wall of the vertical cylinder 301 is inserted into a top cover 305. The top round opening of the top cover 305 is inserted into the outer wall of the uprights 304. The uprights 304 facilitate the up and down movement of the filter screen 302 and the moisture-absorbing plate 303.

[0024] Working principle:

[0025] Air separation and recovery unit air filtration:

[0026] The front flange of the air inlet pipe 5 is connected to the flange of the air duct, and the bottom flange of the drain pipe 6 is connected to the external water pipe. Then, the front flange of the straight pipe 204 is connected to the water inlet pipe, so that the water pipe sends sodium hydroxide solution into the straight pipe 204. Then, the sodium hydroxide solution enters the vertical pipe 202 and is finally sprayed out at the nozzle 203. At this time, the air inlet pipe 5 sends air into the outer shell 201. The air comes into contact with the sprayed sodium hydroxide solution and reacts, causing the carbon dioxide in the air to react into sodium carbonate and water. Then, it mixes with the falling sodium hydroxide solution and is discharged at the drain pipe 6. The remaining air enters the round pipe 1 through the rear of the outer shell 201. Then, the filter screen 302, through its own activated carbon material, can remove odors and particulate matter from the air. Then, the air passes through the filter screen 302 and comes into contact with the moisture absorption plate 303. The moisture absorption plate 303, through its own high molecular organic polymer material, provides good moisture absorption performance and can absorb a large amount of moisture in the air.

[0027] Air fractionation in air separation and venting recovery unit:

[0028] The filtered air enters the air separation device 4 through the circular pipe 1. Then, the valve connecting the air separation device 4 and the circular pipe 1 is closed. At this time, the air separation device 4 is powered on and works in conjunction with the internal cooling system to cool the interior. Since oxygen and nitrogen in the air have different liquefaction temperatures, oxygen liquefies at -183 degrees Celsius. At this time, the drain valve at the bottom of the air separation device 4 discharges the liquefied oxygen. At -253 degrees Celsius, nitrogen liquefies. At this time, the drain valve at the bottom of the air separation device 4 opens again to discharge the liquefied nitrogen, thus completing the air separation, venting and recovery.

[0029] Replacement of filter screen and moisture absorption plate in air separation and recovery unit:

[0030] After an air separation and venting recovery operation is completed, push the top cover 305 upward to detach it from the vertical cylinder 301. Then, hold the upright rod 304 and move it upward, so that the upright rod 304, along with the filter screen 302 and the moisture-absorbing plate 303, moves upward and gradually detaches it from the vertical cylinder 301. Then, insert the new filter screen 302 and the moisture-absorbing plate 303 into the inner walls of the two vertical cylinders 301 respectively. Finally, insert the top cover 305 into the top of the outer wall of the vertical cylinder 301 from top to bottom.

[0031] Example 2:

[0032] See attached document Figure 1-5 In this embodiment, an air separation venting and recovery device further includes an inclined block 7, the bottom of which is fixedly connected to the bottom of the inner wall of the outer shell 201.

[0033] Working principle:

[0034] The inclined block 7 allows the liquid inside the outer casing 201 to flow forward through its inclined surface, preventing a large amount of liquid from remaining at the bottom of the inner wall of the outer casing 201.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An air separation and venting recovery device, comprising a circular tube (1) and an air separation device (4), wherein the rear end face of the circular tube (1) is connected to the front face of the air separation device (4), characterized in that: The front of the circular tube (1) is connected to a spray structure (2), the front of the spray structure (2) is connected to an air inlet pipe (5), the lower front of the spray structure (2) is connected to a drain pipe (6), and the front and rear sides of the top of the circular tube (1) are respectively connected to a filter structure (3).

2. The air separation venting and recovery device according to claim 1, characterized in that: The spray structure (2) includes a shell (201) and a vertical pipe (202). The rear end face of the shell (201) is connected to the front face of the circular pipe (1). The top of the shell (201) is connected through the outer wall of multiple vertical pipes (202). The bottom of the vertical pipe (202) is connected to a nozzle (203), and the top of the vertical pipe (202) is connected to a straight pipe (204).

3. The air separation venting and recovery device according to claim 2, characterized in that: The front of the outer casing (201) is connected to the rear end face of the air intake pipe (5).

4. The air separation venting and recovery device according to claim 2, characterized in that: The lower left and right sides of the front of the outer casing (201) are respectively connected to the rear end faces of two drain pipes (6).

5. The air separation venting and recovery device according to claim 1, characterized in that: The filter structure (3) includes a vertical cylinder (301) and a filter screen (302). The bottoms of the two vertical cylinders (301) are respectively connected to the front and rear sides of the top of the circular tube (1). The inner wall of the front vertical cylinder (301) is inserted into the outer wall of the filter screen (302). A moisture-absorbing plate (303) is inserted into the inner wall of the rear vertical cylinder (301). The top left and right sides of the filter screen (302) and the moisture-absorbing plate (303) are fixed with uprights (304). A top cover (305) is inserted into the top of the outer wall of the vertical cylinder (301).

6. The air separation venting and recovery device according to claim 5, characterized in that: The top round opening of the top cover (305) is inserted into the outer wall of the upright (304).

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