A deoxidation drying system for nitrogen generator

Abstract

The invention discloses a deoxidation and drying system for a nitrogen generator, comprising a base, a deoxidizer, a cooler, two drying boxes and a nitrogen generator, wherein the deoxidizer, the cooler, the two drying boxes and the nitrogen generator are fixedly installed on the top of the base from left to right in sequence. The deoxidation and drying system for a nitrogen generator, through the coordinated use of a waste heat cylinder, a sleeve, a connecting pipe, a first valve, a water inlet pipe, a second valve and a piston, allows people to inject water into the interior of the waste heat cylinder through the water inlet pipe, and the high temperature generated when the deoxidizer is working can heat the water in the waste heat cylinder to form high-temperature steam, which is introduced into the two sleeves through the connecting pipe to increase the temperature inside the drying box, so that the water in the desiccant bag is evaporated by heat, and the drying and regeneration of the desiccant bag inside the drying box is accelerated, which not only improves the energy utilization rate, but also improves the drying and regeneration efficiency of the desiccant bag.

Description

Technical Field

[0001] The invention relates to a deoxidation and drying system, in particular to a deoxidation and drying system for a nitrogen generator. Background Art

[0002] Nitrogen generator refers to a device that uses air as raw material and uses physical methods to separate oxygen and nitrogen in it to obtain nitrogen. According to different classification methods, namely cryogenic air separation, molecular sieve air separation and membrane air separation, industrial nitrogen generators can be divided into three types. Nitrogen generator is a nitrogen production equipment designed and manufactured according to pressure swing adsorption technology. Nitrogen generator uses high-quality imported carbon molecular sieve as adsorbent and uses the pressure swing adsorption principle at room temperature to separate air to produce high-purity nitrogen.

[0003] At present, in the production process of nitrogen, the air needs to be deoxygenated and dried first, but the existing nitrogen generator deoxygenation and drying system still has the following problems: 1. High energy consumption and low energy utilization; 2. The desiccant bag in the dryer adopts natural drying and regeneration, which is inefficient. Therefore, we make improvements to this and propose a deoxygenation and drying system for nitrogen generators. Summary of the invention

[0004] The present invention discloses a deoxidation and drying system for a nitrogen generator, comprising a base, a deoxidizer, a cooler, two drying boxes and a nitrogen generator, wherein the deoxidizer, the cooler, the two drying boxes and the nitrogen generator are fixedly mounted on the top of the base in sequence from left to right, a waste heat recovery and drying mechanism is arranged between the deoxidizer and the two drying boxes, the waste heat recovery and drying mechanism is composed of a waste heat cylinder, two sleeves, two connecting pipes, two first valves, a water inlet pipe, a second valve and two pistons, an air inlet pipe is sleeved on the middle part of one side of the waste heat cylinder, one end of the air inlet pipe is fixedly connected to the input end of the deoxidizer, an air outlet pipe is fixedly connected to the output end of the deoxidizer, an end of the air outlet pipe is fixedly connected to the input end of the cooler, a connecting mechanism is arranged between the cooler and the two drying boxes, the connecting mechanism is composed of a three-way pipe and two third valves, the two drying boxes Five frames and five desiccant bags are provided inside the drying box, the output ends of the two drying boxes are fixedly connected with pipes respectively, the ends of the two pipes are fixedly connected with the same filter box, the filter box is fixedly installed on the top of the base, a filter mechanism is provided inside the filter box, the filter mechanism consists of a rectangular plate, a sealing ring and five filter screens, a transmission mechanism is provided on one side of the filter box, the transmission mechanism consists of two fixed blocks, a threaded rod, a movable block, a connecting rod, a connecting block and two ball bearings, the bottom of one side of the connecting block is fixedly connected with a pipe, the other end of the pipe is fixedly connected with the input end of the nitrogen generator, the deoxidizer is electrically connected to the external power supply through the control panel thereon, the cooler is electrically connected to the external power supply through the control panel thereon, and the nitrogen generator is electrically connected to the external power supply through the control panel thereon.

[0005] As a preferred technical solution of the present invention, the waste heat cylinder is fixedly installed in the middle of the deoxidizer, the two sleeves are fixedly installed on the outside of the two drying boxes, one end of the two connecting pipes are fixedly connected to the tops on both sides of the waste heat cylinder, the other ends of the two connecting pipes are fixedly connected to the tops on one side of the two sleeves, and the two first valves are fixedly installed at the ends of the two connecting pipes.

[0006] As a preferred technical solution of the present invention, one end of the water inlet pipe is fixedly connected to the top of one side of the waste heat cylinder, the second valve is fixedly installed in the middle of the water inlet pipe, and the two pistons are respectively inserted and connected with the top of one side of the two sleeves.

[0007] As a preferred technical solution of the present invention, one end of the three-way pipe is fixedly connected to the output end of the cooler, the two output ends of the three-way pipe are respectively fixedly connected to the input ends of the two drying boxes, and the two third valves are respectively fixedly installed at the output ends of the two three-way pipes.

[0008] As a preferred technical solution of the present invention, the five frames are fixedly installed at equal distances inside the drying box, the five desiccant bags are respectively sleeved inside the five frames, and a plurality of through holes are opened at the bottom ends of the five frames.

[0009] As a preferred technical solution of the present invention, one side of the five filter screens is fixedly connected to one side of the rectangular plate, and the outside of the five filter screens is interlaced and connected to the inside of the filter box.

[0010] As a preferred technical solution of the present invention, the sealing ring is sleeved on the outside of the five filter screens, the front side of the sealing ring is in contact with the back side of the rectangular plate, and the back side of the sealing ring is in contact with the front side of the filter box.

[0011] As a preferred technical solution of the present invention, one side of the two fixed blocks is fixedly connected to the two ends of one side of the filter box, the two ends of the threaded rod are connected to the middle part of the fixed block through bearings, and the middle part of the movable block is connected to the external thread of the threaded rod.

[0012] As a preferred technical solution of the present invention, the two balls are sleeved on one side of the movable block, and the outsides of the two balls are slidably connected to one side of the filter box.

[0013] As a preferred technical solution of the present invention, the front face of the movable block is fixedly connected to one end of a connecting rod, one end of the connecting rod is fixedly connected to one side of the connecting block, and the end of the connecting block is fixedly connected to the middle of one side of the rectangular plate.

[0014] The beneficial effects of the present invention are:

[0015] 1. The deoxidation and drying system for the nitrogen generator uses a waste heat cylinder, a sleeve, a connecting pipe, a first valve, a water inlet pipe, a second valve and a piston in coordination, so that people can inject water into the waste heat cylinder through the water inlet pipe. The high temperature generated when the deoxidizer is working can heat the water in the waste heat cylinder to form high-temperature steam, which is introduced into the two sleeves through the connecting pipe to increase the temperature inside the drying box, so that the water in the desiccant bag is evaporated by heat, and the drying and regeneration of the desiccant bag inside the drying box is accelerated, which not only improves the utilization rate of energy, but also improves the drying and regeneration efficiency of the desiccant bag.

[0016] 2. The deoxidation drying system for this nitrogen generator uses the third valve and the three-way pipe to control the opening and closing of the two third valves respectively, so that the gas can only flow into one of the drying boxes. When the moisture absorbed by the desiccant bag in the drying box reaches saturation and needs to be dried and regenerated, the gas can be controlled to flow into the other drying box, so that the two drying boxes can work in a cycle, which improves the work efficiency.

[0017] 3. The deoxidation and drying system for the nitrogen generator can perform multi-stage filtration of impurities in the gas through five filters, thereby improving the quality of the gas entering the nitrogen generator. In addition, through the coordinated use of the fixed block, threaded rod, movable block, connecting rod, connecting block and ball bearings, people can move the movable block, connecting rod and connecting block by rotating the threaded rod, and drive the rectangular plate to move, so that people can easily clean the filter in the filter box, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 It is a structural schematic diagram of a deoxidation and drying system for a nitrogen generator of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-way pipe structure of a deoxidation and drying system for a nitrogen generator of the present invention;

[0021] Figure 3 It is a schematic diagram of the internal structure of a drying box of a deoxidation drying system for a nitrogen generator of the present invention;

[0022] Figure 4 It is a schematic diagram of the top view of the structure of a filter box of a deoxidation and drying system for a nitrogen generator of the present invention;

[0023] Figure 5 The present invention is a schematic diagram of the structure of movable blocks of a deoxidation and drying system for a nitrogen generator.

[0024] Figure 6 This is a schematic diagram of the structure of a waste heat cylinder of a deoxidation drying system for a nitrogen generator according to the present invention.

[0025] Figure 7 This is a schematic diagram of a rectangular plate structure of a deoxidation and drying system for a nitrogen generator according to the present invention.

[0026] In the figure: 1. base; 2. deaerator; 3. cooler; 4. ball bearing; 5. drying box; 6. nitrogen generator; 7. waste heat cylinder; 8. sleeve; 9. connecting pipe; 10. first valve; 11. water inlet pipe; 12. second valve; 13. outlet pipe; 14. piston; 15. three-way pipe; 16. third valve; 17. pipeline; 18. filter box; 19. frame; 20. desiccant bag; 21. rectangular plate; 22. sealing ring; 23. filter screen; 24. fixed block; 25. threaded rod; 26. movable block; 27. connecting rod; 28. connecting block; 29. ​​pipeline; 30. air inlet pipe. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0028] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a deoxidation and drying system for a nitrogen generator of the present invention comprises a base 1, a deoxidizer 2, a cooler 3, two drying boxes 5 and a nitrogen generator 6. The deoxidizer 2, the cooler 3, the two drying boxes 5 and the nitrogen generator 6 are fixedly installed on the top of the base 1 from left to right in sequence. A waste heat recovery and drying mechanism is arranged between the deoxidizer 2 and the two drying boxes 5. The waste heat recovery and drying mechanism consists of a waste heat cylinder 7, two sleeves 8, two connecting pipes 9, two first valves 10, a water inlet pipe 11, a second valve 12 and two pistons 14. An air inlet pipe 30 is sleeved on the middle part of one side of the waste heat cylinder 7. One end of the air inlet pipe 30 is fixedly connected to the input end of the deoxidizer 2. The output end of the deoxidizer 2 is fixedly connected to an air outlet pipe 13. The end of the air outlet pipe 13 is fixedly connected to the input end of the cooler 3. A connecting mechanism is arranged between the cooler 3 and the two drying boxes 5. The connecting mechanism consists of a three-way pipe 15 and two third valves 16. The two Five frames 19 and five desiccant bags 20 are provided inside the drying box 5. The output ends of the two drying boxes 5 are fixedly connected with pipes 17 respectively. The ends of the two pipes 17 are fixedly connected with the same filter box 18. The filter box 18 is fixedly installed on the top of the base 1. A filtering mechanism is provided inside the filter box 18. The filtering mechanism consists of a rectangular plate 21, a sealing ring 22 and five filter screens 23. A transmission mechanism is provided on one side of the filter box 18. The transmission mechanism consists of two fixed blocks 24, a threaded rod 25, a movable block 26, a connecting rod 27, a connecting block 28 and two balls 4. The bottom of one side of the connecting block 28 is fixedly connected with a pipe 29. The other end of the pipe 29 is fixedly connected with the input end of the nitrogen generator 6. The deoxidizer 2 is electrically connected to the external power supply through the control panel thereon, the cooler 3 is electrically connected to the external power supply through the control panel thereon, and the nitrogen generator 6 is electrically connected to the external power supply through the control panel thereon.

[0029] Among them, the waste heat cylinder 7 is fixedly installed in the middle of the deaerator 2, the two sleeves 8 are fixedly installed on the outside of the two drying boxes 5, one end of the two connecting pipes 9 is fixedly communicated with the tops of both sides of the waste heat cylinder 7, and the other ends of the two connecting pipes 9 are fixedly communicated with the tops of one side of the two sleeves 8, respectively. The two first valves 10 are fixedly installed at the ends of the two connecting pipes 9, respectively. Through the coordinated use of the waste heat cylinder 7, the sleeve 8, the connecting pipe 9, the first valve 10, the water inlet pipe 11, the second valve 12 and the piston 14, people can inject water into the interior of the waste heat cylinder 7 through the water inlet pipe 11. The high temperature generated when the deaerator 2 is working can heat the water in the waste heat cylinder 7 to form high-temperature steam, which is introduced into the two sleeves 8 through the connecting pipe 9, thereby increasing the temperature inside the drying box 5, causing the water in the desiccant bag 20 to evaporate by heat, thereby accelerating the drying and regeneration of the desiccant bag 20 inside the drying box 5, thereby improving the energy utilization rate and the drying and regeneration efficiency of the desiccant bag 20.

[0030] Among them, one end of the water inlet pipe 11 is fixedly connected to the top of one side of the waste heat cylinder 7, the second valve 12 is fixedly installed in the middle of the water inlet pipe 11, and the two pistons 14 are respectively inserted and connected with the top of one side of the two sleeves 8. Through the two pistons 14, after people pull out the two pistons 14, the high-temperature steam in the two sleeves 8 can be discharged through the connection between the piston 14 and the sleeve 8, so that the air pressure in the sleeve 8 and the waste heat cylinder 7 can be kept stable, so that the steam can pass into the sleeve 8.

[0031] Among them, one end of the three-way pipe 15 is fixedly connected to the output end of the cooler 3, and the two output ends of the three-way pipe 15 are fixedly connected to the input ends of the two drying boxes 5 respectively. The two third valves 16 are fixedly installed at the output ends of the two three-way pipes 15 respectively. Through the coordinated use of the third valves 16 and the three-way pipe 15, people can control the opening and closing of the two third valves 16 respectively, so that the gas can only pass into one of the drying boxes 5, and when the moisture absorbed by the desiccant bag 20 in the drying box 5 reaches saturation and needs to be dried and regenerated, the gas can be controlled to pass into the other drying box 5, so that the two drying boxes 5 work in a cycle, thereby improving the work efficiency.

[0032] Among them, five frames 19 are fixedly installed in the drying box 5 at equal distances, and five desiccant bags 20 are respectively mounted in the five frames 19. A plurality of through holes are opened at the bottom ends of the five frames 19, through which air can pass through the through holes and contact the desiccant bags 20.

[0033] Among them, one side of the five filters 23 is fixedly connected to one side of the rectangular plate 21, and the outside of the five filters 23 is interlaced and connected to the inside of the filter box 18. Impurities in the gas can be filtered through the filter 23, thereby improving the quality of the gas entering the nitrogen generator 6.

[0034] Among them, the sealing ring 22 is sleeved on the outside of the five filter screens 23, the front of the sealing ring 22 is in contact with the back of the rectangular plate 21, and the back of the sealing ring 22 is in contact with the front of the filter box 18. Through the sealing ring 22, the internal gas of the filter box 18 is not easy to flow out through the gap between the rectangular plate 21 and the filter box 18.

[0035] Among them, one side of the two fixed blocks 24 is fixedly connected to the two ends of one side of the filter box 18, the two ends of the threaded rod 25 are connected to the middle part of the fixed block 24 through bearings, and the middle part of the movable block 26 is connected to the external thread of the threaded rod 25. Through the coordinated use of the fixed block 24, the threaded rod 25, the movable block 26, the connecting rod 27, the connecting block 28 and the ball 4, people can move the movable block 26, the connecting rod 27 and the connecting block 28 by rotating the threaded rod 25, and drive the rectangular plate 21 to move, so that people can easily clean the filter screen 23 in the filter box 18, thereby improving practicality.

[0036] Among them, the two balls 4 are both sleeved on one side of the movable block 26, and the outsides of the two balls 4 are slidably connected to one side of the filter box 18. When the threaded rod 25 is rotated through the balls 4, the movable block 26 can only move but not rotate, and the movable block 26 can move smoothly.

[0037] Among them, the front face of the movable block 26 is fixedly connected to one end of the connecting rod 27, one end of the connecting rod 27 is fixedly connected to one side of the connecting block 28, and the end of the connecting block 28 is fixedly connected to the middle part of one side of the rectangular plate 21. Through the connection between the connecting rod 27 and the connecting block 28, the rectangular plate 21 can be driven to move when the movable block 26 moves.

[0038] During operation, first open the second valve 12, and pass water into the interior of the waste heat cylinder 7 through the water inlet pipe 11. When the water level is at three-quarters of the height of the waste heat cylinder 7, stop injecting water and close the second valve 12. The water level is below the connecting pipe 9. Turn on the power of the deaerator 2, the cooler 3 and the nitrogen generator 6, and inject air into the deaerator 2 through the air inlet pipe for the deaerator process. After the air is deoxygenated, it enters the interior of the cooler 3 through the air outlet pipe 13 for cooling. Open one of the third valves 16 according to the usage. After the air is cooled, the air passes through the three-way pipe 15 and enters the interior of one of the drying boxes 5. The air passes through five desiccant bags 20, and the moisture in the air is absorbed by the desiccant bags 20. The dried gas enters the interior 18 of the filter box through the pipeline 17. The air passes through five filter screens 23, and the impurities thereon are blocked by the filter screens 23. After filtering, the air enters the interior of the nitrogen generator 6 through the pipeline 29 to carry out the nitrogen making process. Open one of the first valves 10, and the high temperature generated when the deaerator 2 is working can be The water in the waste heat cylinder 7 is heated to form high-temperature steam, which is passed into one of the sleeves 8 through one of the connecting pipes 9, thereby raising the temperature inside the drying box 5 that is not in the working state, so that the water in the desiccant bag 20 is evaporated by heat, and the drying and regeneration of the desiccant bag 20 inside the drying box 5 is accelerated. The piston 14 is removed so that the steam can be discharged from the inside of the sleeve 8. When the moisture absorbed by the desiccant bag 20 in one of the drying boxes 5 reaches saturation, one of the third valves 16 is closed, and the other third valve 16 is opened to allow air to pass into the other drying box 5. One of the first valves 10 is closed and the other first valve 10 is opened to allow steam to pass into the inside of the waste heat cylinder 7 on the drying box 5 that is not in the working state at this time. When the nitrogen production is completed, the power supply of the deoxidizer 2, the cooler 3 and the nitrogen generator 6 is turned off, and the threaded rod 25 is rotated to move the movable block 26, the connecting rod 27 and the connecting block 28. The connecting block drives the rectangular plate 21 to move, so that the filter screen 23 is separated from the inside of the filter box 18, and the impurities on the filter screen 23 are cleaned.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A deoxidation and drying system for a nitrogen generator, characterized in that: The invention comprises a base (1), a deaerator (2), a cooler (3), two drying boxes (5) and a nitrogen generator (6), wherein the deaerator (2), the cooler (3), the two drying boxes (5) and the nitrogen generator (6) are fixedly mounted on the top of the base (1) in sequence from left to right, and a waste heat recovery drying mechanism is arranged between the deaerator (2) and the two drying boxes (5), and the waste heat recovery drying mechanism comprises a waste heat cylinder (7), two sleeves (8), two connecting pipes (9), two first valves (10), a water inlet pipe (11), a second The waste heat cylinder (7) is composed of a valve (12) and two pistons (14); an air inlet pipe (30) is sleeved in the middle of one side of the waste heat cylinder (7); one end of the air inlet pipe (30) is fixedly connected to the input end of the deoxidizer (2); the output end of the deoxidizer (2) is fixedly connected to an air outlet pipe (13); the end of the air outlet pipe (13) is fixedly connected to the input end of the cooler (3); a connecting mechanism is provided between the cooler (3) and the two drying boxes (5); the connecting mechanism is composed of a three-way pipe (15) and two third valves (16); the inner portions of the two drying boxes (5) are connected to the three-way pipe (15) and the two third valves (16); The bottom of each drying box (5) is provided with five frames (19) and five desiccant bags (20); the output ends of the two drying boxes (5) are respectively fixedly connected to a pipe (17); the ends of the two pipes (17) are fixedly connected to the same filter box (18); the filter box (18) is fixedly mounted on the top of the base (1); a filter mechanism is provided inside the filter box (18); the filter mechanism is composed of a rectangular plate (21), a sealing ring (22) and five filter screens (23); a transmission mechanism is provided on one side of the filter box (18); the transmission mechanism is composed of two fixed The invention comprises a fixed block (24), a threaded rod (25), a movable block (26), a connecting rod (27), a connecting block (28) and two balls (4); a bottom of one side of the connecting block (28) is fixedly connected to a round tube (29); the other end of the round tube (29) is fixedly connected to an input end of a nitrogen generator (6); the deoxidizer (2) is electrically connected to an external power supply via a control panel thereon; the cooler (3) is electrically connected to an external power supply via a control panel thereon; and the nitrogen generator (6) is electrically connected to an external power supply via a control panel thereon.

2. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: The waste heat cylinder (7) is fixedly mounted in the middle of the deoxidizer (2), the two sleeves (8) are respectively fixedly mounted on the outside of the two drying boxes (5), one end of the two connecting pipes (9) are respectively fixedly connected to the tops of both sides of the waste heat cylinder (7), the other ends of the two connecting pipes (9) are respectively fixedly connected to the tops of one side of the two sleeves (8), and the two first valves (10) are respectively fixedly mounted at the ends of the two connecting pipes (9).

3. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: One end of the water inlet pipe (11) is fixedly connected to the top of one side of the waste heat cylinder (7), the second valve (12) is fixedly installed in the middle of the water inlet pipe (11), and the two pistons (14) are respectively connected to the top of one side of the two sleeves (8).

4. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: One end of the three-way pipe (15) is fixedly connected to the output end of the cooler (3), the two output ends of the three-way pipe (15) are respectively fixedly connected to the input ends of the two drying boxes (5), and the two third valves (16) are respectively fixedly mounted on the output ends of the two three-way pipes (15).

5. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: The five frames (19) are fixedly installed at equal intervals inside the drying box (5), the five desiccant bags (20) are respectively sleeved inside the five frames (19), and a plurality of through holes are formed at the bottom ends of the five frames (19).

6. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: One side of the five filter screens (23) is fixedly connected to one side of the rectangular plate (21), and the outside of the five filter screens (23) is interlacedly connected to the inside of the filter box (18).

7. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: The sealing ring (22) is sleeved on the outside of the five filter screens (23), the front side of the sealing ring (22) is in contact with the back side of the rectangular plate (21), and the back side of the sealing ring (22) is in contact with the front side of the filter box (18).

8. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: One side of the two fixed blocks (24) is respectively fixedly connected to two ends of one side of the filter box (18), two ends of the threaded rod (25) are respectively connected to the middle of the fixed block (24) through bearings, and the middle of the movable block (26) is connected to the outer thread of the threaded rod (25).

9. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: The two balls (4) are sleeved on one side of the movable block (26), and the outsides of the two balls (4) are slidably connected to one side of the filter box (18).

10. A deoxidation and drying system for a nitrogen generator according to claim 1, characterized in that: The front face of the movable block (26) is fixedly connected to one end of a connecting rod (27), one end of the connecting rod (27) is fixedly connected to one side of a connecting block (28), and the end of the connecting block (28) is fixedly connected to the middle of one side of the rectangular plate (21).

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