Natural gas hydrogen production desulfurization device

Abstract

The utility model provides a natural gas hydrogen production desulfurization device which comprises a desulfurization tower, two absorption liquid tanks, a liquid supply component arranged between the desulfurization tower and the two absorption liquid tanks, a tower cover mounted at the top of the desulfurization tower, a gas inlet pipe communicated with the lower end of the desulfurization tower, an exhaust pipe communicated with the tower cover and a dehumidification component communicated with the bottom of the tower cover, according to the natural gas hydrogen production desulfurization device, the liquid supply assembly is arranged, so that absorption liquid in the absorption liquid tank can be conveniently and respectively controlled to be conveyed to the two spraying assemblies for natural gas desulfurization treatment; and after the absorption liquid in one absorption liquid tank fails, the absorption liquid in the other absorption liquid tank can be immediately used for desulfurization treatment, and at the moment, the failed absorption liquid can be replaced, so that the situation that desulfurization treatment of natural gas needs to be stopped when the absorption liquid is replaced, and the desulfurization efficiency is influenced is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen preparation, in particular to a natural gas hydrogen production and desulfurization device. Background Art

[0002] As energy consumption intensifies, finding new energy sources has become a crucial task. Hydrogen, one of the most promising energy sources today, is widely available, produces virtually no pollution, has high conversion efficiency, and offers broad application prospects. Producing hydrogen from natural gas can, to a certain extent, alleviate my country's energy crisis and further promote the transformation of its energy utilization structure. However, desulfurization is required during the natural gas hydrogen production process.

[0003] However, the existing desulfurization equipment has some defects or shortcomings:

[0004] In the desulfurization of natural gas, desulfurization is achieved by spraying a desulfurizer to contact the sulfur-containing natural gas gas and then absorb the sulfides in the natural gas. However, the service life of the desulfurizer is limited, and it needs to be replaced after a period of use. When the desulfurizer is replaced, the desulfurization treatment of the natural gas needs to be stopped, and then the desulfurizer needs to be replaced, which will affect the desulfurization efficiency of the natural gas. In addition, when it is used, there is a lack of detection agencies to conduct timely detection of the treated natural gas. When the desulfurization effect of the desulfurizer deteriorates, it cannot be detected in time, resulting in incomplete desulfurization found in the later detection. The desulfurized gas needs to be re-introduced into the desulfurization tank for re-treatment, which will also affect the desulfurization efficiency of the natural gas. Utility Model Content

[0005] The purpose of the utility model is to provide a natural gas hydrogen production and desulfurization device to solve the above problems.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the present invention provides a natural gas hydrogen production and desulfurization device, comprising: a desulfurization tower and two absorption liquid tanks, a liquid supply assembly arranged between the desulfurization tower and the two absorption liquid tanks, a tower cover installed on the top of the desulfurization tower, an air inlet pipe connected to the lower end of the desulfurization tower, an exhaust pipe connected to the tower cover, a dehumidification component connected to the bottom of the tower cover, a debugging component installed on the outside of the desulfurization tower, two gas equalizing components arranged in the desulfurization tower, and two spraying components respectively arranged above the two gas equalizing components and connected to the liquid supply assembly, wherein

[0007] The liquid supply component is suitable for intermittently transporting the absorption liquid in the two absorption liquid tanks to the desulfurization tower;

[0008] The dehumidification component is suitable for reducing the water vapor content of the desulfurized natural gas;

[0009] The debugging component is suitable for workers to inspect and repair the desulfurization tower;

[0010] The two gas evenly distributing components cooperate with the two spraying assemblies to improve the contact effect between the natural gas and the absorption liquid.

[0011] Furthermore, the liquid supply assembly includes two first liquid pumps respectively connected to the lower ends of the two absorption liquid tanks through pipes, two first liquid inlet pipes respectively connected to the liquid outlet ends of the two first liquid pumps, a second liquid inlet pipe connected to the two spray assemblies, two first liquid discharge pipes respectively connected to the upper ends of the two absorption liquid tanks, a second liquid pump connected to the two first liquid discharge pipes through pipes, a second liquid discharge pipe with one end connected to the liquid inlet end of the second liquid pump and the other end connected to the bottom of the desulfurization tower, two first solenoid valves respectively installed on one of the first liquid inlet pipes and the first liquid discharge pipe, and two second solenoid valves respectively installed on the other of the first liquid inlet pipe and the first liquid discharge pipe.

[0012] Furthermore, a natural gas hydrogen production and desulfurization device also includes a hydrogen sulfide detector installed on the exhaust pipe, a return pipe with one end connected to the intake pipe and the other end connected to the exhaust pipe, a circulation pump installed on the return pipe, a third solenoid valve installed on the return pipe, and two fourth solenoid valves installed on the intake pipe and the exhaust pipe respectively;

[0013] The hydrogen sulfide detector, the first liquid pump, the second liquid pump, the circulation pump, the first solenoid valve, the second solenoid valve, the third solenoid valve and the fourth solenoid valve are all electrically connected to the external controller.

[0014] Furthermore, the spray assembly includes a liquid guide tube having one end connected to the second liquid inlet pipe, a plurality of diversion pipes connected to the other end of the liquid guide tube, a plurality of annular spray pipes connected to the plurality of diversion pipes, and a plurality of nozzles respectively connected to the plurality of annular spray pipes.

[0015] Furthermore, the gas evenly distributing component includes a partition plate fixed in the desulfurization tower, and a plurality of through holes opened on the partition plate.

[0016] Furthermore, the dehumidification component includes a dehumidification pipe installed at the bottom of the tower cover and connected to the exhaust pipe, and a plurality of baffles fixed on the inner wall of the dehumidification pipe;

[0017] The dehumidification pipe is arranged in a spiral shape.

[0018] Furthermore, the debugging component includes a standing frame fixed on the outside of the desulfurization tower, a railing fixed on the upper surface of the standing frame, and a climbing ladder fixed on the outer wall of the standing frame.

[0019] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0020] 1. The natural gas hydrogen desulfurization device can monitor the natural gas after desulfurization in real time through the hydrogen sulfide detector. When the desulfurization effect of the absorption liquid deteriorates, affecting the desulfurization quality of the natural gas, the hydrogen sulfide detector can detect it. At this time, the external controller can control the two fourth solenoid valves to close the air inlet pipe and the air outlet pipe respectively. Under the operation of the circulation pump, the natural gas that does not meet the desulfurization standards can be re-transported to the desulfurization tower through the reflux pipe for desulfurization treatment, and the absorption liquid can be replaced at the same time, thereby avoiding the discharge of the natural gas that does not meet the desulfurization standards through the exhaust pipe, which requires subsequent reprocessing and affects the desulfurization efficiency of the natural gas.

[0021] 2. The natural gas hydrogen desulfurization device can transport the absorption liquid in the two absorption liquid tanks to the two spray assemblies for desulfurization treatment through the liquid supply component. At the same time, the liquid supply component only transports the absorption liquid in one absorption liquid tank. When the desulfurization effect of the absorption liquid in the absorption liquid tank deteriorates, the absorption liquid in the other absorption liquid tank can be transported for desulfurization treatment. At this time, the absorption liquid that has failed or has deteriorated in desulfurization effect can be replaced. When the absorption liquid is replaced, there is no need to stop the desulfurization of natural gas, thereby effectively ensuring the desulfurization efficiency of natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Figure 1 Shows a perspective view of the present utility model;

[0024] Figure 2 Shows a partial cutaway view of the present invention Figure 1 ;

[0025] Figure 3 Shows a partial exploded view of the present utility model;

[0026] Figure 4 Shows a partial cutaway view of the present invention Figure 2 .

[0027] In the picture

[0028] 1. Desulfurization tower; 2. Absorption liquid tank; 3. Liquid supply assembly; 4. Tower cover; 5. Air inlet pipe; 6. Exhaust pipe; 7. Dehumidification component; 8. Debugging component; 9. Gas equalization component; 10. Spray assembly; 11. First liquid pump; 12. First liquid inlet pipe; 13. Second liquid inlet pipe; 14. First liquid discharge pipe; 15. Second liquid pump; 16. Second liquid discharge pipe; 17. First solenoid valve; 18. Second solenoid valve; 19. Hydrogen sulfide detector; 20. Reflux pipe; 21. Circulation pump; 22. Third solenoid valve; 23. Fourth solenoid valve; 24. Liquid guide pipe; 25. Diverter pipe; 26. Annular spray pipe; 27. Nozzle; 28. Partition plate; 29. ​​Through hole; 30. Dehumidification pipe; 31. Baffle; 32. Standing frame; 33. Railing; 34. Climbing ladder. DETAILED DESCRIPTION

[0029] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0030] See also Figure 1 , Figure 1 Shows a three-dimensional diagram of the present invention; see Figure 2 , Figure 2 Shows a partial cutaway view of the present invention Figure 1 ; see Figure 3 , Figure 3 Shows a partial exploded view of the present invention; see Figure 4 , Figure 4 Shows a partial cutaway view of the present invention Figure 2 ;like Figure 1-4 As shown, a natural gas hydrogen production and desulfurization device includes: a desulfurization tower 1 and two absorption liquid tanks 2, a liquid supply component 3 arranged between the desulfurization tower 1 and the two absorption liquid tanks 2, a tower cover 4 installed on the top of the desulfurization tower 1, an air inlet pipe 5 connected to the lower end of the desulfurization tower 1, an exhaust pipe 6 connected to the tower cover 4, a dehumidification component 7 connected to the bottom of the tower cover 4, a debugging component 8 installed on the outside of the desulfurization tower 1, two gas equalization components 9 arranged in the desulfurization tower 1, and two spray components 10 respectively arranged above the two gas equalization components 9 and connected to the liquid supply component 3, wherein

[0031] The liquid supply component 3 is suitable for intermittently transporting the absorption liquid in the two absorption liquid tanks 2 to the desulfurization tower 1;

[0032] The dehumidification component 7 is suitable for reducing the water vapor content of the desulfurized natural gas;

[0033] The debugging component 8 is suitable for workers to inspect and repair the desulfurization tower 1;

[0034] The two gas equalizing components 9 cooperate with the two spraying components 10 to improve the contact effect between natural gas and absorption liquid. During the desulfurization operation, the liquid supply component 3 works to transport the absorption liquid in one of the absorption liquid tanks 2 to the two spraying components 10. After the natural gas is transported to the desulfurization tower 1 through the provided air inlet pipe 5, it is first evenly diffused through a gas equalizing component 9, so that one of the spraying components 10 evenly sprays the absorption liquid to desulfurize the natural gas. After completing one desulfurization treatment, it will be evenly diffused through another gas equalizing component 9 and subjected to a second desulfurization treatment through another spraying component 10. The absorption liquid sprayed by the two spraying components 10 can evenly and comprehensively contact with the natural gas and use secondary desulfurization, thereby effectively ensuring the desulfurization effect of the natural gas. At the same time, the absorption liquid sprayed by the two spraying components 10 falls on the two gas tanks. The gas equalizing component 9 can effectively contact the absorption liquid when the natural gas passes through the two gas equalizing components 9, thereby further improving the desulfurization effect of the natural gas; and after the natural gas is desulfurized, it will be discharged through the exhaust pipe 6 after passing through the dehumidification component 7. The set dehumidification component 7 can effectively clean the water vapor in the natural gas and reduce the loss of the absorption liquid. When the desulfurization effect of the absorption liquid in one of the absorption liquid tanks 2 deteriorates, it is convenient for the natural gas to be re-transported to the desulfurization tower 1 through the reflux pipe 20 for desulfurization treatment after the desulfurization is completed, and at the same time, the absorption liquid in the other absorption liquid tank 2 is transported for desulfurization treatment through the set liquid supply component 3, thereby avoiding the discharge of unqualified desulfurized natural gas from the exhaust pipe 6. At the same time, the failed absorption liquid can be replaced at this time, and during the replacement, the desulfurization of the natural gas can always be maintained to avoid affecting the desulfurization efficiency of the natural gas.

[0035] Optionally, the liquid supply component 3 includes two first liquid pumps 11 respectively connected to the lower ends of the two absorption liquid tanks 2 through pipelines, two first liquid inlet pipes 12 respectively connected to the liquid outlet ends of the two first liquid pumps 11, a second liquid inlet pipe 13 connected to the two spray components 10, two first liquid discharge pipes 14 respectively connected to the upper ends of the two absorption liquid tanks 2, a second liquid pump 15 connected to the two first liquid discharge pipes 14 through pipelines, a second liquid discharge pipe 16 with one end connected to the liquid inlet end of the second liquid pump 15 and the other end connected to the bottom of the desulfurization tower 1, two first solenoid valves 17 respectively installed on one of the first liquid inlet pipes 12 and the first liquid discharge pipe 14, and two second solenoid valves 18 respectively installed on the other first liquid inlet pipe 12 and the first liquid discharge pipe 14. When in use, the two first solenoid valves 17 will make one of the first liquid inlet pipes 12 and the first liquid discharge pipe 14 in a closed state, and the two second solenoid valves 18 will make the other The first liquid inlet pipe 12 and the first liquid discharge pipe 14 are in an unobstructed state, and then, under the operation of one of the first liquid pumps 11, the absorption liquid in one of the absorption liquid tanks 2 can be transported to the two spray assemblies 10 through the second liquid inlet pipe 13 to desulfurize the natural gas entering the desulfurization tower 1, and under the operation of the second liquid pump 15, the used absorption liquid can be transported to one of the absorption liquid tanks 2 through the second liquid discharge pipe 16 for reuse. When the absorption liquid in the absorption liquid tank 2 has been used for a period of time and cannot effectively desulfurize the natural gas, the external controller can control the first liquid inlet pipe 12 and the first liquid discharge pipe 14 corresponding to the two first solenoid valves 17 to open, and control the two second solenoid valves 18 to control the corresponding first liquid inlet pipe 12 and the first liquid discharge pipe 14 to close, so as to facilitate the use of the absorption liquid in the other absorption liquid tank 2. At this time, the absorption liquid in the used absorption liquid tank 2 can be replaced, and the replacement of the absorption liquid will not affect the desulfurization of the natural gas, thereby ensuring the desulfurization efficiency.

[0036] Optionally, a natural gas hydrogen production and desulfurization device further includes a hydrogen sulfide detector 19 installed on the exhaust pipe 6, a return pipe 20 connected to the intake pipe 5 at one end and to the exhaust pipe 6 at the other end, a circulating pump 21 installed on the return pipe 20, a third solenoid valve 22 installed on the return pipe 20, and two fourth solenoid valves 23 installed on the intake pipe 5 and the exhaust pipe 6, respectively;

[0037] The hydrogen sulfide detector 19, the first liquid pump 11, the second liquid pump 15, the circulating pump 21, the first solenoid valve 17, the second solenoid valve 18, the third solenoid valve 22 and the fourth solenoid valve 23 are all electrically connected to the external controller. When the natural gas is desulfurized and discharged through the exhaust pipe 6, the hydrogen sulfide detector 19 can detect the natural gas. When the absorption liquid is used for a period of time and cannot be effectively desulfurized, the sulfur dioxide detector will detect that the sulfur dioxide concentration is too high, and then it can send a signal to the external controller, which is convenient for the external controller to control the two fourth solenoid valves 23 to seal the exhaust pipe 6 and the intake pipe 5 respectively. Close, and control the third solenoid valve 22 to open the return pipe 20, start the circulation pump 21, so that the natural gas that has not been effectively desulfurized can be re-delivered to the desulfurization tower 1 for desulfurization treatment, and control the liquid supply component 3 to change from delivering the absorption liquid in one absorption liquid tank 2 to delivering the absorption liquid in another absorption liquid tank 2. Then, when the sulfur dioxide detector detects that the sulfur dioxide concentration of the natural gas is qualified, the two fourth solenoid valves 23 can be controlled to open the exhaust pipe 6 and the intake pipe 5 respectively, and the third solenoid valve 22 can be controlled to close the return pipe 20 to continue desulfurization of the natural gas, so as to avoid the output of unqualified desulfurized natural gas.

[0038] Optionally, the spray assembly 10 includes a liquid guide pipe 24 having one end connected to the second liquid inlet pipe 13, a plurality of branch pipes 25 connected to the other end of the liquid guide pipe 24, a plurality of annular spray pipes 26 connected to the plurality of branch pipes 25, and a plurality of nozzles 27 respectively connected to the plurality of annular spray pipes 26. When the natural gas is uniformly dispersed by the gas equalizing component 9 when entering the desulfurization tower 1, the absorption liquid entering the liquid guide pipe 24 will be evenly dispersed into the plurality of branch pipes 25 and evenly enter the plurality of annular spray pipes 26, thereby being conveniently sprayed out through the plurality of nozzles 27 and evenly sprayed in the desulfurization tower 1 without any dead corners in spraying, thereby ensuring the desulfurization effect of the natural gas when passing through the spray assembly 10. The two spray assemblies 10 provided facilitate secondary desulfurization of the natural gas and effectively improve the desulfurization quality of the natural gas.

[0039] Optionally, the gas equalizing component 9 includes a partition plate 28 fixed in the desulfurization tower 1, and a plurality of through holes 29 opened on the partition plate 28. After the natural gas enters the desulfurization tower 1 through the inlet pipe, it will first be blocked by the partition plate 28 located at the lower end of the desulfurization tower 1, so that the natural gas can easily and evenly pass through the plurality of through holes 29 and float upward, thereby facilitating the uniform diffusion of natural gas in the desulfurization tower 1, effectively improving the contact effect between the spray component 10 spraying the absorption liquid and the natural gas, and improving the desulfurization effect of the natural gas. As the spray component 10 works, the absorption liquid will flow evenly downward along the plurality of through holes 29 after falling on the partition plate 28, so that the natural gas is initially and evenly contacted with the absorption liquid, and then after the natural gas passes through the two gas equalizing components 9, it is evenly dispersed twice, effectively ensuring the desulfurization effect of the natural gas.

[0040] Optionally, the dehumidification component 7 includes a dehumidification pipe 30 installed at the bottom of the tower cover 4 and connected to the exhaust pipe 6, and a plurality of baffles 31 fixed on the inner wall of the dehumidification pipe 30;

[0041] The dehumidification pipe 30 is arranged in a spiral shape. After the natural gas is dehumidified, it can enter the exhaust pipe 6 after passing through the dehumidification pipe 30. After the natural gas enters the dehumidification pipe 30, it will continuously collide with a number of baffles 31, so that the water vapor in the natural gas will be effectively retained in the dehumidification pipe 30 and stay along the dehumidification pipe 30. The spirally arranged dehumidification pipe 30 can provide a longer dehumidified air flow channel while maintaining the same space in the desulfurization tower 1, thereby increasing the contact time between the gas containing water vapor and the dehumidification pipe 30, and greatly optimizing the dehumidification efficiency of the desulfurization tower 1.

[0042] Optionally, the debugging component 8 includes a standing frame 32 fixed on the outside of the desulfurization tower 1, a railing 33 fixed on the upper surface of the standing frame 32, and a climbing ladder 34 fixed on the outer wall of the standing frame 32. When the desulfurization tower 1 needs to be debugged and repaired, the staff can log onto the standing frame 32 through the set climbing ladder 34, and then conveniently remove the tower cover 4 on the desulfurization tower 1 to inspect the interior of the desulfurization tower 1. The set railing 33 can improve the safety of the staff on the standing frame 32.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A natural gas hydrogen production and desulfurization device, characterized in that: include: A desulfurization tower (1) and two absorption liquid tanks (2), a liquid supply assembly (3) arranged between the desulfurization tower (1) and the two absorption liquid tanks (2), a tower cover (4) installed on the top of the desulfurization tower (1), an air inlet pipe (5) connected to the lower end of the desulfurization tower (1), an exhaust pipe (6) connected to the tower cover (4), a dehumidification component (7) connected to the bottom of the tower cover (4), a debugging component (8) installed outside the desulfurization tower (1), two gas equalizing components (9) arranged in the desulfurization tower (1), and two spraying components (10) respectively arranged above the two gas equalizing components (9) and connected to the liquid supply assembly (3), wherein The liquid supply component (3) is suitable for intermittently transporting the absorption liquid in the two absorption liquid tanks (2) to the desulfurization tower (1); The dehumidification component (7) is suitable for reducing the water vapor content of the desulfurized natural gas; The debugging component (8) is suitable for workers to inspect and repair the desulfurization tower (1); The two gas equalizing components (9) cooperate with the two spraying assemblies (10) to improve the contact effect between natural gas and absorption liquid.

2. A natural gas hydrogen production and desulfurization device according to claim 1, characterized in that: The liquid supply assembly (3) includes two first liquid pumps (11) respectively connected to the lower ends of the two absorption liquid tanks (2) through pipelines, two first liquid inlet pipes (12) respectively connected to the liquid outlet ends of the two first liquid pumps (11), a second liquid inlet pipe (13) connected to the two spray assemblies (10), two first liquid discharge pipes (14) respectively connected to the upper ends of the two absorption liquid tanks (2), a second liquid pump (15) connected to the two first liquid discharge pipes (14) through pipelines, a second liquid discharge pipe (16) one end of which is connected to the liquid inlet end of the second liquid pump (15) and the other end of which is connected to the bottom of the desulfurization tower (1), two first solenoid valves (17) respectively installed on one of the first liquid inlet pipes (12) and the first liquid discharge pipe (14), and two second solenoid valves (18) respectively installed on the other of the first liquid inlet pipe (12) and the first liquid discharge pipe (14).

3. A natural gas hydrogen production and desulfurization device as claimed in claim 2, characterized in that ， A natural gas hydrogen production and desulfurization device further comprises a hydrogen sulfide detector (19) installed on the exhaust pipe (6), a return pipe (20) one end of which is connected to the intake pipe (5) and the other end of which is connected to the exhaust pipe (6), a circulation pump (21) installed on the return pipe (20), a third solenoid valve (22) installed on the return pipe (20), and two fourth solenoid valves (23) installed on the intake pipe (5) and the exhaust pipe (6), respectively; The hydrogen sulfide detector (19), the first liquid pump (11), the second liquid pump (15), the circulation pump (21), the first solenoid valve (17), the second solenoid valve (18), the third solenoid valve (22) and the fourth solenoid valve (23) are all electrically connected to the external controller.

4. A natural gas hydrogen production and desulfurization device according to claim 3, characterized in that: The spray assembly (10) comprises a liquid guide tube (24) having one end connected to the second liquid inlet tube (13), a plurality of branch tubes (25) connected to the other end of the liquid guide tube (24), a plurality of annular spray tubes (26) connected to the plurality of branch tubes (25), and a plurality of spray heads (27) respectively connected to the plurality of annular spray tubes (26).

5. A natural gas hydrogen production and desulfurization device according to claim 4, characterized in that: The gas equalizing component (9) includes a partition plate (28) fixed in the desulfurization tower (1), and a plurality of through holes (29) provided on the partition plate (28).

6. A natural gas hydrogen production and desulfurization device according to claim 1, characterized in that: The dehumidification component (7) includes a dehumidification pipe (30) installed at the bottom of the tower cover (4) and communicating with the exhaust pipe (6), and a plurality of baffles (31) fixed on the inner wall of the dehumidification pipe (30); The dehumidification pipe (30) is arranged in a spiral shape.

7. A natural gas hydrogen production and desulfurization device according to claim 6, characterized in that: The debugging component (8) includes a standing frame (32) fixed on the outside of the desulfurization tower (1), a railing (33) fixed on the upper surface of the standing frame (32), and a climbing ladder (34) fixed on the outer wall of the standing frame (32).

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