Cabinet for recycling pressure relief gas of drying tower

By designing a drying tower pressure relief gas return gas cabinet, the gas cabinet sealing and volume expansion is achieved using electric telescopic rods and water seal components, the problem of failure to effectively recover and reuse of the drying tower pressure relief gas is solved, and the recycling and storage of combustion gas is achieved, which reduces production costs and improves environmental protection performance.

CN222880865UActive Publication Date: 2025-05-16NINGXIA YIDA NATURAL GAS CO LTD
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Patent Information

Application Number
CN202421717868.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-19
Publication Date
2025-05-16
Estimated Expiration
2034-07-19

AI Technical Summary

Technical Problem

In the prior art, the drying tower pressure relief gas is not effectively recovered and reused, resulting in waste of synthesis gas SNG and affecting the increase in LNG production.

Method used

A drying tower pressure-release gas return gas cabinet is designed. Through a combined structure of supporting a pedestal, sink, bottom tower, first gas cabinet and second gas cabinet, the sealing and volume expansion of the gas cabinet is achieved by using electric telescopic rods and water sealing components, and the intake pipe transports combustion gas for recycling and storage.

Benefits of technology

It effectively avoids direct discharge of combustion gas into the atmosphere, reduces the exhaust loss of effective components of methane and hydrogen, reduces production costs, and improves environmental protection performance.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of recycling and gas collecting cabinets, and discloses a drying tower pressure relief gas recycling and gas collecting cabinet which comprises a supporting pedestal and a water tank formed in the middle of the upper end face of the supporting pedestal, a bottom tower is fixedly installed in the middle of the upper end face of the supporting pedestal, and a first gas cabinet is movably installed in an inner cavity of the bottom tower. A second gas holder is movably installed in an inner cavity of the first gas holder, water seal assemblies are arranged at the joint of the first gas holder and the bottom tower and the joint of the second gas holder and the first gas holder, a bell jar is arranged on the upper end face of the second gas holder, and a bleeder is fixedly installed on the side wall of the bell jar. The sealing performance among the first gas holder, the second gas holder and the bottom tower can be guaranteed through the arrangement of the water seal assembly, combustion gas can be recycled into the gas holders through the arrangement of the gas inlet pipe, the gas outlet pipe and the like, emptying loss of effective components of methane and hydrogen is avoided, the production cost of a factory is reduced, meanwhile, the atmosphere is protected, and the service life of the gas holder is prolonged. The environmental protection performance is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of recycling gas cabinets, in particular to a drying tower decompression gas recycling gas cabinet. Background Art

[0002] Ningxia Yida LNG storage tank continuously produces low-temperature BOG gas, which enters the BOG air-temperature vaporizer and BOG heat exchanger in turn, and enters the BOG inlet balance tank at room temperature. After that, it enters the BOG compressor for compression and returns to the cold box for re-liquefaction. After pressure regulation, it supplies fuel gas for the medium-pressure boilers, torch lights, and canteens and domestic boilers outside the factory.

[0003] The depressurized gas from Ningxia Yida's drying tower passes through the pre-purification regeneration gas system or HV88701 under high pressure conditions and is finally discharged to the flare for combustion, resulting in waste of synthesis gas SNG. In order to increase production and consumption, it is necessary to optimize and transform the depressurized gas process and recycle the depressurized gas to the gas tank for reproduction, which can effectively reduce the emission of synthesis gas SNG and increase the production of about 80 tons of LNG per year. Therefore, a depressurized gas from a drying tower is urgently needed to be recycled into the gas tank to solve this problem. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The utility model aims to provide a drying tower decompression gas recovery gas cabinet to solve the problems raised in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a drying tower depressurized gas is recycled into a gas cabinet, comprising a support pedestal and a water tank arranged in the middle of the upper end surface of the support pedestal, a bottom tower is fixedly installed in the middle of the upper end surface of the support pedestal, a first gas cabinet is movably installed in the inner cavity of the bottom tower, a second gas cabinet is movably installed in the inner cavity of the first gas cabinet, a water seal assembly is arranged at the connection between the first gas cabinet and the bottom tower and at the connection between the second gas cabinet and the first gas cabinet, a bell jar is arranged on the upper end surface of the second gas cabinet, and a vent pipe is fixedly installed on the side wall of the bell jar.

[0008] Preferably, a support plate is fixedly installed on the bottom surface of the inner cavity of the support pedestal, a first electric telescopic rod is fixedly installed on the outer side of the upper end surface of the support plate, a second electric telescopic rod is fixedly installed on the inner side of the upper end surface of the support plate, the piston rod end of the first electric telescopic rod is fixedly connected to the bottom surface of the first gas cabinet, and the piston rod end of the second electric telescopic rod is fixedly connected to the bottom surface of the second gas cabinet.

[0009] Preferably, an air inlet pipe is fixedly installed on the left side of the side wall of the bottom tower, an air outlet pipe is fixedly installed on the right side of the side wall of the bottom tower, and a sewage pipe connected to the water tank is arranged on the side wall of the support base.

[0010] Preferably, the lower parts of the side walls of the first gas cabinet and the second gas cabinet are both set as lower hanging rings, and the upper parts of the side walls of the first gas cabinet and the bottom tower are both set as upper hanging rings, the lower hanging ring of the first gas cabinet slides in the inner cavity of the upper hanging ring of the bottom tower, and the lower hanging ring of the second gas cabinet slides in the inner cavity of the upper hanging ring of the first gas cabinet.

[0011] Preferably, a movable groove is provided on the outer wall of the lower hanging ring of the first gas cabinet and the second gas cabinet, the water seal assembly includes an overflow bucket slidably mounted on the side wall of the movable groove, an adjusting screw is fixedly mounted on the outer wall of the lower hanging ring of the first gas cabinet and the second gas cabinet, and an adjusting plate is threadedly mounted on the side wall of the adjusting screw.

[0012] Preferably, the overflow hopper is fixedly mounted on the side wall of the adjustment plate, and the adjustment plate slides on the side walls of the lower hanging rings of the first gas cabinet and the second gas cabinet.

[0013] Preferably, a mounting groove is provided on the outer side of the upper end surface of the support pedestal, a mounting stud is movably installed in the inner cavity of the mounting groove, a mounting nut is threadedly installed on the side wall of the mounting stud, a sealing rubber ring is provided at the connection between the base tower and the support pedestal, and the bell cover is arranged in an arch shape.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, workers first add an appropriate amount of water into the lower parts of the side walls of the first gas cabinet and the second gas cabinet, which are both set in the lower hanging ring, and then start the first electric telescopic rod and the second electric telescopic rod to push the first gas cabinet and the second gas cabinet to rise. At this time, the volume formed by the first gas cabinet, the second gas cabinet and the bottom tower can be significantly increased, and at this time, the lower hanging ring of the first gas cabinet can be against the side wall of the upper hanging ring of the second gas cabinet, and the lower hanging ring of the second gas cabinet can be against the inner wall of the upper hanging ring of the bottom tower. Therefore, under the action of the clean water in the upper and lower hanging rings of the first gas cabinet and the second gas cabinet, the entire first gas cabinet, the second gas cabinet and the bottom tower can be kept sealed. After that, workers transport the combustion gas into the entire gas cabinet through the air intake pipe for recovery and preservation, thereby avoiding the direct discharge of the combustion gas into the atmosphere, resulting in the loss of the effective components of methane and hydrogen, thereby reducing the cost of factory production, while protecting the atmosphere and improving environmental protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a drying tower decompression gas being recycled into a gas cabinet from a top view according to the utility model;

[0017] Figure 2This is a front view structural diagram of a drying tower decompression gas being recycled into a gas cabinet according to the utility model;

[0018] Figure 3 It is a front view cross-sectional structural schematic diagram of a drying tower decompression gas being recycled into a gas cabinet according to the utility model;

[0019] Figure 4 This is a schematic cross-sectional structure diagram of the first gas cabinet where depressurized gas from a drying tower is recycled into the gas cabinet according to the utility model.

[0020] In the figure: 1. support base; 11. water tank; 12. sewage pipe; 2. bottom tower; 21. air inlet pipe; 22. air outlet pipe; 3. first gas cabinet; 31. lower hanging ring; 32. upper hanging ring; 311. movable groove; 312. overflow bucket; 313. adjusting screw; 314. adjusting plate; 4. second gas cabinet; 5. water seal assembly; 6. bell cover; 7. vent pipe; 8. support plate; 81. first electric telescopic rod; 82. second electric telescopic rod; 9. mounting groove; 91. mounting stud; 92. mounting nut. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4 The utility model provides a technical solution for recycling the depressurized gas from a drying tower into a gas cabinet:

[0023] A drying tower decompressed gas is recycled into a gas cabinet, comprising a support base 1 and a water tank 11 opened in the middle of the upper end surface of the support base 1, a bottom tower 2 is fixedly installed in the middle of the upper end surface of the support base 1, a first gas cabinet 3 is movably installed in the inner cavity of the bottom tower 2, a second gas cabinet 4 is movably installed in the inner cavity of the first gas cabinet 3, a water seal assembly 5 is arranged at the connection between the first gas cabinet 3 and the bottom tower 2 and at the connection between the second gas cabinet 4 and the first gas cabinet 3, a bell jar 6 is arranged on the upper end surface of the second gas cabinet 4, and a venting pipe 7 is fixedly installed on the side wall of the bell jar 6.

[0024] Further, a support plate 8 is fixedly installed on the bottom surface of the inner cavity of the support pedestal 1, a first electric telescopic rod 81 is fixedly installed on the outer side of the upper end surface of the support plate 8, a second electric telescopic rod 82 is fixedly installed on the inner side of the upper end surface of the support plate 8, a piston rod end of the first electric telescopic rod 81 is fixedly connected to the bottom surface of the first gas cabinet 3, and a piston rod end of the second electric telescopic rod 82 is fixedly connected to the bottom surface of the second gas cabinet 4;

[0025] An air inlet pipe 21 is fixedly installed on the left side of the side wall of the bottom tower 2 , an air outlet pipe 22 is fixedly installed on the right side of the side wall of the bottom tower 2 , and a sewage pipe 12 connected to the water tank 11 is arranged on the side wall of the support base 1 .

[0026] It should be noted that, through the provision of the water tank 11 and the sewage pipe 12 , the clean water overflowing from the lower hanging ring 31 can be discharged.

[0027] Further, the lower parts of the side walls of the first gas cabinet 3 and the second gas cabinet 4 are both provided with lower hanging rings 31, and the upper parts of the side walls of the first gas cabinet 3 and the bottom tower 2 are both provided with upper hanging rings 32, the lower hanging ring 31 of the first gas cabinet 3 slides in the inner cavity of the upper hanging ring 32 of the bottom tower 2, and the lower hanging ring 31 of the second gas cabinet 4 slides in the inner cavity of the upper hanging ring 32 of the first gas cabinet 3;

[0028] The outer side walls of the lower hanging rings 31 of the first gas cabinet 3 and the second gas cabinet 4 are both provided with movable grooves 311, and the water seal assembly includes an overflow bucket 312 slidably mounted on the side wall of the movable groove 311, and an adjusting screw 313 is fixedly mounted on the outer side wall of the lower hanging rings 31 of the first gas cabinet 3 and the second gas cabinet 4, and an adjusting plate 314 is threadedly mounted on the side wall of the adjusting screw 313;

[0029] The overflow hopper 312 is fixedly mounted on the side wall of the adjustment plate 314 , and the adjustment plate 314 slides on the side wall of the lower hanging ring 31 of the first gas cabinet 3 and the second gas cabinet 4 .

[0030] It should be noted that by turning the adjusting screw 313, the workers can make the adjusting plate 314 slide on the side wall of the lower hanging ring 31, so that the height of the overflow bucket 312 can be changed to control the height of the water level in the lower hanging ring 31. It can be adjusted for storing different gases, thereby improving the practicality of the entire device.

[0031] Furthermore, a mounting groove 9 is provided on the outer side of the upper end surface of the support pedestal 1, a mounting stud 91 is movably installed in the inner cavity of the mounting groove 9, a mounting nut 92 is threadedly installed on the side wall of the mounting stud 91, a sealing rubber ring is provided at the connection between the base tower 2 and the support pedestal 1, and the bell cover 6 is arranged to be arched.

[0032] It should be noted that, by configuring the bell jar 6 to be arched, the pressure resistance of the bell jar 6 can be enhanced, thereby effectively extending the service life of the entire device.

[0033] Working principle:

[0034] During work, the worker first adds an appropriate amount of water into the lower part of the side wall of the first gas cabinet 3 and the second gas cabinet 4, which are both set in the lower hanging ring 31, and then starts the first electric telescopic rod 81 and the second electric telescopic rod 82 to push the first gas cabinet 3 and the second gas cabinet 4 to rise. At this time, the volume formed between the first gas cabinet 3, the second gas cabinet 4 and the bottom tower 2 can be significantly increased, and at this time, the lower hanging ring 31 of the first gas cabinet 3 can be against the side wall of the upper hanging ring 32 of the second gas cabinet 4, and the lower hanging ring 31 of the second gas cabinet 4 can be against the inner wall of the upper hanging ring 32 of the bottom tower 2. Therefore, under the action of the clean water in the upper and lower hanging rings 31 of the first gas cabinet 3 and the second gas cabinet 4, the entire first gas cabinet 3, the second gas cabinet 4 and the bottom tower 2 can be kept sealed. After that, the worker transports the combustion gas into the entire gas cabinet through the air inlet pipe 21 for recovery and preservation, thereby avoiding the direct discharge of the combustion gas into the atmosphere, resulting in the loss of the effective components of methane and hydrogen, thereby reducing the cost of factory production, while protecting the atmosphere and improving environmental protection performance.

[0035] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A drying tower decompression gas recovery gas cabinet, comprising a support base (1), and a water tank (11) provided in the middle of the upper end surface of the support base (1), characterized in that: A bottom tower (2) is fixedly mounted on the middle of the upper end surface of the support pedestal (1); a first gas cabinet (3) is movably mounted in the inner cavity of the bottom tower (2); a second gas cabinet (4) is movably mounted in the inner cavity of the first gas cabinet (3); a water seal assembly (5) is arranged at the connection between the first gas cabinet (3) and the bottom tower (2) and at the connection between the second gas cabinet (4) and the first gas cabinet (3); a bell jar (6) is arranged on the upper end surface of the second gas cabinet (4); and a venting pipe (7) is fixedly mounted on the side wall of the bell jar (6).

2. The drying tower decompression gas is recycled into a gas cabinet according to claim 1, characterized in that: A support plate (8) is fixedly mounted on the bottom surface of the inner cavity of the support pedestal (1); a first electric telescopic rod (81) is fixedly mounted on the outer side of the upper end surface of the support plate (8); a second electric telescopic rod (82) is fixedly mounted on the inner side of the upper end surface of the support plate (8); a piston rod end of the first electric telescopic rod (81) is fixedly connected to the bottom surface of the first gas cabinet (3); and a piston rod end of the second electric telescopic rod (82) is fixedly connected to the bottom surface of the second gas cabinet (4).

3. The drying tower decompression gas is recycled into a gas cabinet according to claim 1, characterized in that: An air inlet pipe (21) is fixedly mounted on the left side of the side wall of the bottom tower (2), an air outlet pipe (22) is fixedly mounted on the right side of the side wall of the bottom tower (2), and a sewage pipe (12) connected to the water tank (11) is arranged on the side wall of the support base (1).

4. The drying tower decompression gas is recycled into a gas cabinet according to claim 1, characterized in that: The lower parts of the side walls of the first gas cabinet (3) and the second gas cabinet (4) are both provided with lower hanging rings (31), and the upper parts of the side walls of the first gas cabinet (3) and the bottom tower (2) are both provided with upper hanging rings (32). The lower hanging ring (31) of the first gas cabinet (3) slides in the inner cavity of the upper hanging ring (32) of the bottom tower (2), and the lower hanging ring (31) of the second gas cabinet (4) slides in the inner cavity of the upper hanging ring (32) of the first gas cabinet (3).

5. The drying tower decompression gas is recycled into a gas cabinet according to claim 4, characterized in that: A movable groove (311) is provided on the outer side wall of the lower hanging ring (31) of the first gas cabinet (3) and the second gas cabinet (4); the water seal assembly (5) comprises an overflow hopper (312) slidably mounted on the side wall of the movable groove (311); an adjusting screw (313) is fixedly mounted on the outer side wall of the lower hanging ring (31) of the first gas cabinet (3) and the second gas cabinet (4); and an adjusting plate (314) is threadedly mounted on the side wall of the adjusting screw (313).

6. The decompressed gas from the drying tower is recycled into a gas cabinet according to claim 5, characterized in that: The overflow hopper (312) is fixedly mounted on the side wall of the adjustment plate (314), and the adjustment plate (314) slides on the side walls of the lower hanging rings (31) of the first gas cabinet (3) and the second gas cabinet (4).

7. The drying tower decompression gas is recycled into a gas cabinet according to claim 1, characterized in that: The outer side of the upper end surface of the support pedestal (1) is provided with a mounting groove (9), the inner cavity of the mounting groove (9) is movably provided with a mounting stud (91), and the side wall of the mounting stud (91) is threadedly provided with a mounting nut (92), a sealing rubber ring is provided at the connection between the base tower (2) and the support pedestal (1), and the bell cover (6) is arranged in an arch shape.