High-efficiency purification system for liquid ammonia

Abstract

The utility model relates to the technical field of purification systems, discloses a high-efficiency purification system for liquid ammonia, and solves the problem that the existing liquid ammonia purification system is low in working efficiency. The device comprises a first liquid nitrogen tank, a second liquid nitrogen tank, a flow control valve, a first degreaser, a second degreaser, a first impurity filter, a second impurity filter, a deoxidization device, a dehydration device, a condenser and a liquid nitrogen storage tank, and a three-way pipe I is arranged between the first liquid nitrogen tank and the flow control valve and between the second liquid nitrogen tank and the flow control valve; a second three-way pipe is arranged between the flow control valve and the first degreaser and between the flow control valve and the second degreaser, the first degreaser and the second degreaser are connected with the first impurity filter and the second impurity filter through a four-way pipe, and the first impurity filter and the second impurity filter are connected with the deoxidizing device through a third three-way pipe. The deoxidizing device is connected with the dehydrating device; the dehydrating device is connected with the condenser; through the purification system, the purification efficiency of liquid ammonia can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of purification systems, in particular to a high-efficiency purification system for liquid ammonia. Background Art

[0002] Liquid ammonia is widely used in industry. Since liquid ammonia contains more impurities, it needs to be purified before use. The purification of liquid ammonia includes steps such as vaporization, oil removal, impurity removal, deoxidation, and dehydration. Especially during the oil removal and impurity removal processes, the oil filter and the impurity filter need to be cleaned or replaced regularly. When the oil filter and the impurity filter are cleaned or replaced in the existing liquid ammonia purification system, the purification operation needs to be suspended, which affects the work efficiency. In addition, the impurity filter in the existing purification system is easily clogged during use, which affects the filtering effect. Therefore, the present application improves the existing liquid ammonia purification system and proposes a high-efficiency purification system for liquid ammonia. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-efficiency purification system for liquid ammonia, which effectively solves the problem of low working efficiency of the existing liquid ammonia purification system.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency purification system for liquid ammonia, comprising a first liquid nitrogen tank, a second liquid nitrogen tank, a flow control valve, a first deoiler, a second deoiler, a first impurity filter, a second impurity filter, a deoxygenator, a dehydration device, a condenser and a liquid nitrogen storage tank, wherein a three-way pipe 1 is arranged between the first liquid nitrogen tank and the second liquid nitrogen tank and the flow control valve, a three-way pipe 2 is arranged between the flow control valve and the first deoiler and the second deoiler, the first deoiler and the second deoiler are connected to the first impurity filter and the second impurity filter through a four-way pipe, the first impurity filter and the second impurity filter are connected to the deoxygenator through a three-way pipe, the deoxygenator is connected to the dehydration device, the dehydration device is connected to the condenser, and the condenser is connected to the liquid nitrogen storage tank.

[0005] Preferably, a plurality of solenoid valves are provided on the three-way pipe one, the three-way pipe two, the four-way pipe and the three-way pipe.

[0006] Preferably, electric heating tubes are fixedly arranged inside the first liquid nitrogen tank and the second liquid nitrogen tank, and the electric heating tubes are of a spiral structure.

[0007] Preferably, the first impurity filter and the second impurity filter are both composed of a filter box, a first collecting box, a second collecting box and a cylindrical filter. The first collecting box and the second collecting box are respectively fixedly connected to both sides of the bottom end of the filter box, and the cylindrical filter is rotatably connected to the inside of the filter box.

[0008] Preferably, a shunt pipe fixedly connected to the four-way pipe is fixedly arranged on one side of the interior of the filter box, and a plurality of nozzles are fixedly arranged on the side of the shunt pipe, and the nozzles are of an inclined structure.

[0009] Preferably, the top and bottom ends of the cylindrical filter are fixedly provided with connectors, the connectors are connected to the filter box via shaft seal 1, and three-way pipe 3 is inserted into one of the connectors and rotatably connected thereto via shaft seal 2.

[0010] Preferably, a plurality of impurity discharge ports are provided on both sides of the bottom end of the filter box, and connection covers connected to the impurity discharge ports are fixedly provided on both sides of the bottom end of the filter box, and an impurity collection bag is provided at the bottom of the connection cover.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] (1) During operation, by providing a first liquid nitrogen tank, a second liquid nitrogen tank, a flow control valve, a first deoiler, a second deoiler, a first impurity filter, a second impurity filter, a deoxidation device, a dehydration device, a condenser and a liquid nitrogen storage tank, the first liquid nitrogen tank and the second liquid nitrogen tank can be alternately fed, the first deoiler and the second deoiler are alternately deoiled, and the first impurity filter and the second impurity filter are alternately filtered, thereby realizing continuous purification operation and effectively improving purification efficiency;

[0013] (2) By providing a first impurity filter and a second impurity filter consisting of a filter box, a first collecting box, a second collecting box and a cylindrical filter, and providing a diverter pipe, a nozzle, a shaft seal 1, a shaft seal 2, an impurity discharge port, a connecting cover and an impurity collection bag, the possibility of clogging of the cylindrical filter can be reduced during impurity removal, the filtration time can be extended, and the impurities can be collected at the same time, thereby shortening the cycle of cleaning and replacing the first impurity filter and the second impurity filter, and further improving the purification efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0015] In the attached picture:

[0016] Figure 1 This is a schematic diagram of the structure of a high-efficiency purification system for liquid ammonia according to the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the first liquid nitrogen tank of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the first impurity filter of the utility model;

[0019] Figure 4 This is a schematic diagram of the internal structure of the first impurity filter of the utility model;

[0020] Figure 5 For this utility model Figure 4 A partial enlarged view of

[0021] In the figure: 1. first liquid nitrogen tank; 2. second liquid nitrogen tank; 3. flow control valve; 4. first deoiler; 5. second deoiler; 6. first impurity filter; 7. second impurity filter; 8. deoxidation device; 9. dehydration device; 10. condenser; 11. liquid nitrogen storage tank; 12. tee pipe one; 13. tee pipe two; 14. four-way pipe; 15. tee pipe three; 16. electric heating pipe; 17. filter box; 18. first collecting box; 19. second collecting box; 20. cylindrical filter; 21. shunt pipe; 22. nozzle; 23. connector; 24. shaft seal one; 25. shaft seal two; 26. impurity discharge port; 27. connecting cover; 28. impurity collection bag. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Depend on Figure 1 The utility model provides a high-efficiency purification system for liquid ammonia, comprising a first liquid nitrogen tank 1, a second liquid nitrogen tank 2, a flow control valve 3, a first deoiler 4, a second deoiler 5, a first impurity filter 6, a second impurity filter 7, a deoxidation device 8, a dehydration device 9, a condenser 10 and a liquid nitrogen storage tank 11, wherein a three-way pipe 12 is arranged between the first liquid nitrogen tank 1 and the second liquid nitrogen tank 2 and the flow control valve 3, and a three-way pipe 12 is arranged between the flow control valve 3 and the first deoiler 4 and the second deoiler 5. The first and second oil removers 4 and 5 are connected to the first and second impurity filters 6 and 7 through a four-way pipe 14, the first and second impurity filters 6 and 7 are connected to the deoxidation device 8 through a three-way pipe 15, the deoxidation device 8 is connected to the dehydration device 9, the dehydration device 9 is connected to the condenser 10, the condenser 10 is connected to the liquid nitrogen storage tank 11, and a plurality of solenoid valves are arranged on the three-way pipe 12, the two-way pipe 13, the four-way pipe 14 and the three-way pipe 15;

[0024] During purification, liquid ammonia is alternately supplied through the first liquid nitrogen tank 1 and the second liquid nitrogen tank 2, and flow control is achieved through the flow control valve 3 to avoid excessive flow affecting the purification effect. The ammonia gas is alternately deoiled through the first deoiler 4 and the second deoiler 5, and the ammonia gas is alternately physically filtered through the first impurity filter 6 and the second impurity filter 7 to remove impurities in the ammonia gas. Then, the ammonia gas is deoxygenated, dehydrated and condensed in sequence through the deoxygenator 8, the dehydration device 9 and the condenser 10. The purified ammonia gas is condensed to form liquid ammonia and enters the liquid nitrogen storage tank 11.

[0025] Depend on Figure 1 and Figure 2 It is shown that the first liquid nitrogen tank 1 and the second liquid nitrogen tank 2 are both fixedly provided with an electric heating tube 16, and the electric heating tube 16 is a spiral structure;

[0026] The spiral electric heating tube 16 can fully heat the liquid ammonia, so that the liquid ammonia is vaporized to form ammonia gas, thereby facilitating the purification work;

[0027] Depend on Figure 1 , Figure 3 , Figure 4 and Figure 5 It is given that the first impurity filter 6 and the second impurity filter 7 are both composed of a filter box 17, a first collecting box 18, a second collecting box 19 and a cylindrical filter 20. The first collecting box 18 and the second collecting box 19 are respectively fixedly connected to the two sides of the bottom end of the filter box 17, and the cylindrical filter 20 is rotatably connected to the inside of the filter box 17. A shunt pipe 21 fixedly connected to the four-way pipe 14 is fixedly provided on one side of the inside of the filter box 17. A plurality of nozzles 22 are fixedly provided on the side of the shunt pipe 21. The nozzle 22 is an inclined structure. A connector 23 is fixedly provided on the top and bottom ends of the cylindrical filter 20. The connector 23 is connected to the filter box 17 through a shaft seal 1 24. The three-way pipe 15 is inserted into one of the connectors 23 and is rotatably connected to the filter box 17 through a shaft seal 25. A plurality of impurity discharge ports 26 are opened on both sides of the bottom end of the filter box 17. A connecting cover 27 connected to the impurity discharge port 26 is fixedly provided on both sides of the bottom end of the filter box 17. An impurity collection bag 28 is provided at the bottom of the connecting cover 27.

[0028] When filtering ammonia, ammonia enters the interior of the shunt pipe 21 through the four-way pipe 14, then enters the interior of the nozzle 22 through the shunt pipe 21, and is then sprayed out by the nozzle 22. Since the nozzle 22 faces the cylindrical filter 20 and the nozzle 22 is an inclined structure, the ammonia sprayed from the nozzle 22 can push the cylindrical filter 20 to rotate, and at the same time, it can be used to blow off impurities on the surface of the cylindrical filter 20 to avoid clogging of the cylindrical filter 20. The activity and sealing of the connection of the cylindrical filter 20 can be improved by the shaft seal 1 24 and the shaft seal 2 25. Impurities enter the interior of the connecting cover 27 through the impurity discharge port 26, and finally enter the interior of the impurity collection bag 28. The staff only needs to replace the impurity collection bag 28 regularly to improve the convenience of cleaning.

[0029] During operation, by providing a first liquid nitrogen tank, a second liquid nitrogen tank, a flow control valve, a first oil remover, a second oil remover, a first impurity filter, a second impurity filter, a deoxidation device, a dehydration device, a condenser and a liquid nitrogen storage tank, the first liquid nitrogen tank and the second liquid nitrogen tank can be alternately fed, the first oil remover and the second oil remover are alternately deoiled, and the first impurity filter and the second impurity filter are alternately filtered, thereby realizing continuous purification operation and effectively improving the purification efficiency; by providing a first impurity filter and a second impurity filter composed of a filter box, a first collecting box, a second collecting box and a cylindrical filter, and providing a shunt pipe, a nozzle, a shaft seal one, a shaft seal two, an impurity discharge port, a connecting cover and an impurity collection bag, the possibility of clogging of the cylindrical filter can be reduced during impurity removal, the filtration time can be extended, and impurities can be collected at the same time, thereby shortening the cycle of cleaning and replacing the first impurity filter and the second impurity filter, and further improving the purification efficiency.

Claims

1. A high-efficiency purification system for liquid ammonia, comprising a first liquid nitrogen tank (1), a second liquid nitrogen tank (2), a flow control valve (3), a first deoiler (4), a second deoiler (5), a first impurity filter (6), a second impurity filter (7), a deoxidation device (8), a dehydration device (9), a condenser (10) and a liquid nitrogen storage tank (11), characterized in that: A three-way pipe (12) is provided between the first liquid nitrogen tank (1) and the second liquid nitrogen tank (2) and the flow control valve (3); a three-way pipe (13) is provided between the flow control valve (3) and the first deoiler (4) and the second deoiler (5); the first deoiler (4) and the second deoiler (5) are connected to the first impurity filter (6) and the second impurity filter (7) via a four-way pipe (14); the first impurity filter (6) and the second impurity filter (7) are connected to the deoxidation device (8) via a three-way pipe (15); the deoxidation device (8) is connected to the dehydration device (9); the dehydration device (9) is connected to the condenser (10); and the condenser (10) is connected to the liquid nitrogen storage tank (11).

2. A high-efficiency purification system for liquid ammonia according to claim 1, characterized in that: A plurality of electromagnetic valves are arranged on the three-way pipe one (12), the three-way pipe two (13), the four-way pipe (14) and the three-way pipe three (15).

3. A high-efficiency purification system for liquid ammonia according to claim 1, characterized in that: An electric heating tube (16) is fixedly arranged inside the first liquid nitrogen tank (1) and the second liquid nitrogen tank (2), and the electric heating tube (16) is a spiral structure.

4. A high-efficiency purification system for liquid ammonia according to claim 1, characterized in that: The first impurity filter (6) and the second impurity filter (7) are both composed of a filter box (17), a first collection box (18), a second collection box (19) and a cylindrical filter (20); the first collection box (18) and the second collection box (19) are respectively fixedly connected to the two sides of the bottom end of the filter box (17); and the cylindrical filter (20) is rotatably connected to the inside of the filter box (17).

5. A high-efficiency purification system for liquid ammonia according to claim 4, characterized in that: A shunt pipe (21) fixedly connected to the cross-tube (14) is fixedly arranged on one side of the filter box (17), and a plurality of nozzles (22) are fixedly arranged on the side of the shunt pipe (21), wherein the nozzles (22) are inclined structures.

6. A high-efficiency purification system for liquid ammonia according to claim 4, characterized in that: The top and bottom ends of the cylindrical filter (20) are both fixedly provided with connectors (23), the connectors (23) are connected to the filter box (17) via a shaft seal 1 (24), and a three-way pipe (15) is inserted into one of the connectors (23) and is rotatably connected thereto via a shaft seal 2 (25).

7. A high-efficiency purification system for liquid ammonia according to claim 4, characterized in that: A plurality of impurity discharge ports (26) are provided on both sides of the bottom end of the filter box (17), a connection cover (27) connected to the impurity discharge ports (26) is fixedly provided on both sides of the bottom end of the filter box (17), and an impurity collection bag (28) is provided at the bottom of the connection cover (27).

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