A sulfur recovery tail gas purification device for LNG deacidification gas treatment

Abstract

This utility model discloses a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment, including a filter box. The front and rear ends of the filter box's upper surface are equipped with quick-disassembly mechanisms. The quick-disassembly mechanism includes a button slidably connected to the upper surface of the filter box, and a first return spring fixedly connected to the lower surface of the button. The filter box contains a filtration mechanism, which includes a first filter screen, a second filter screen, a third filter screen, and a fourth filter screen. In this utility model, pressing the button moves a compression block, and a connecting rod on one side of the compression block causes a locking block to slide out of the first filter screen. The second return spring then resets, ejecting the first filter screen. This mechanism enables quick installation, fixing, and disassembly of the filtration mechanism, saving time for workers to replace and clean the filtration mechanism, effectively avoiding unnecessary openings in the filter box, and ensuring its sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of tail gas desulfurization technology, and in particular to a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment. Background Technology

[0002] The LNG deacidification and acid gas treatment sulfur recovery tail gas purification unit refers to a specialized equipment and system used to treat sulfur compounds (such as hydrogen sulfide and other sulfur oxides) in the acidic tail gas generated during the liquefied natural gas (LNG) production process, purifying the tail gas, removing sulfides, thereby meeting emission standards and realizing sulfur recovery and utilization. This unit integrates multiple stages such as absorption, catalytic conversion, sulfur recovery, and tail gas purification, aiming to efficiently, safely, and environmentally treat sulfur pollutants in tail gas, reduce environmental pollution, recover valuable sulfur resources, and meet environmental emission requirements.

[0003] Traditional LNG deacidification and acid gas treatment sulfur recovery tail gas purification devices tend to have too many pores when setting up the filter screen, which reduces the sealing of the filter box. In addition, the installation and removal of the filter screen requires the use of special tools and takes a lot of time. Furthermore, the filter screens used in traditional LNG deacidification and acid gas treatment sulfur recovery tail gas purification devices are of a single type, which can easily lead to insignificant filtration effect and make the released tail gas less environmentally friendly. Utility Model Content

[0004] The purpose of this invention is to provide a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment, so as to overcome the defects of the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] Some embodiments of this utility model provide a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment, including a filter box. The front and rear ends of the upper surface of the filter box are provided with quick disassembly mechanisms. The quick disassembly mechanism includes a button slidably connected to the upper surface of the filter box. A first return spring is fixedly connected to the lower surface of the button. A compression block is provided on one side of the outer wall of the button. A connecting rod is fixedly connected to the front end of the compression block. A first limiting rod is fixedly connected to the rear end of the outer wall of the compression block. A compression spring is sleeved on the outer wall of the first limiting rod. A locking block is fixedly connected to the rear end of the outer wall of the connecting rod. A second limiting rod is fixedly connected to the front and rear ends of the inner bottom surface of the filter box. A support block is fixedly connected to the upper surface of the second limiting rod. A second return spring is sleeved on the outer wall of the second limiting rod.

[0007] The filter box is equipped with a filtration mechanism, which includes a first filter screen, a second filter screen, a third filter screen, and a fourth filter screen disposed inside the filter box.

[0008] In one embodiment, the first filter screen is a ceramic filter screen, the second filter screen is a zeolite molecular sieve filter screen, the third filter screen is a copper oxide filter screen, and the fourth filter screen is an activated carbon filter screen.

[0009] In one embodiment, an air inlet is fixedly connected to the middle of one side outer wall of the filter box, and a second solenoid valve is fixedly connected to the end of the air inlet away from the filter box.

[0010] In one embodiment, an outlet is fixedly connected to the side of the second solenoid valve away from the gas inlet, and a deacidification tank is fixedly connected to the side of the outlet away from the second solenoid valve.

[0011] In one embodiment, a vent is fixedly connected to the middle of the outer wall of the filter box on the side away from the air inlet, and a first solenoid valve is provided inside the vent.

[0012] In one embodiment, a water outlet is fixedly connected to the lower end of the outer wall of the deacidification tank on the side away from the air outlet, an air inlet is fixedly connected to the middle part of the outer wall of the deacidification tank on the side away from the air outlet, and a water inlet is fixedly connected to the top of the outer wall of the deacidification tank on the side away from the air inlet.

[0013] In one embodiment, the lower surface of the first reset spring is fixedly connected to the filter box, the side of the compression spring away from the compression block is fixedly connected to the filter box, the locking block slides in the first filter screen, and the upper surface of the support block is tightly fitted to the first filter screen.

[0014] In one embodiment, a hinge is fixedly connected to the upper end of the rear outer wall of the filter box, and a flip cover is rotatably connected to the upper surface.

[0015] Compared with the prior art, this utility model has at least the following beneficial effects:

[0016] (1) The present invention proposes a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment. By pressing the button, the compression block is moved, and the connecting rod on one side of the compression block drives the locking block to slide out of the first filter screen. The second reset spring resets and pops out the first filter screen. This mechanism can realize the quick installation, fixing and disassembly of the filter mechanism, saving the time of the staff to replace and clean the filter mechanism, and also effectively avoids the filter box from opening too many holes, which affects the sealing performance.

[0017] (2) The present invention proposes a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment. The first filter is a ceramic filter that can remove residual sulfides in the tail gas. The second filter is a zeolite molecular sieve filter that can remove residual carbon dioxide in the tail gas. The third filter is a copper oxide filter that can remove residual hydrocarbon gases in the tail gas. The fourth filter is an activated carbon filter that can remove odors in the tail gas, making the discharged gas more environmentally friendly and reducing the harm of the discharged tail gas to the human body. Attached Figure Description

[0018] Figure 1 This is an isometric view of a sulfur recovery tail gas purification device for LNG deacidification and acid gas treatment according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the filter box in a sulfur recovery tail gas purification device for LNG deacidification and acid gas treatment according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the quick disassembly mechanism in a sulfur recovery tail gas purification device for LNG deacidification and acid gas treatment according to an embodiment of the present invention.

[0021] Figure 4 This is a partial cross-sectional view of a quick disassembly mechanism in a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to an embodiment of the present invention.

[0022] Figure 5 A cross-sectional view of the quick disassembly mechanism in a sulfur recovery tail gas purification device for LNG deacidification and acid gas treatment according to an embodiment of the present invention.

[0023] Figure 6 This is a cross-sectional view of the filtration mechanism in a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Deacidification tank; 2. Filter box; 3. Flip-top lid;

[0026] 4. Quick disassembly mechanism; 401. Button; 402. Support block; 403. First return spring; 404. Compression block; 405. First limit rod; 406. Compression spring; 407. Connecting rod; 408. Locking block; 409. Second return spring; 4010. Second limit rod;

[0027] 5. Filtration mechanism; 501. First filter screen; 502. Second filter screen; 503. Third filter screen; 504. Fourth filter screen;

[0028] 6. Hinge; 7. Air inlet; 8. Water outlet; 9. Water inlet; 10. First solenoid valve; 11. Air vent; 12. Air outlet; 13. Second solenoid valve; 14. Air supply port. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Reference Figure 4 , Figure 5 and Figure 6 This embodiment provides a sulfur recovery tail gas purification device for LNG deacidification acid gas treatment, which includes a filter box 2. The filter box 2 is characterized by having a quick-release mechanism 4 at its front and rear ends. The quick-release mechanism 4 includes a button 401 slidably connected to the upper surface of the filter box 2. A first return spring 403 is fixedly connected to the lower surface of the button 401. A compression block 404 is provided on one side of the outer wall of the button 401. A connecting rod 407 is fixedly connected to the front end of the compression block 404. A first limiting rod 405 is fixedly connected to the rear end of one side of the outer wall of the compression block 404. A compression spring 406 is sleeved on the outer wall of the first limiting rod 405. A locking block 408 is fixedly connected to the rear end of one side of the outer wall of the connecting rod 407. A second limiting rod 4010 is fixedly connected to the front and rear ends of the inner bottom surface of the filter box 2. A support block 402 is fixedly connected to the upper surface of the second limiting rod 4010. A second return spring 409 is sleeved on the outer wall of the second limiting rod 4010.

[0031] The filter box 2 is equipped with a filter mechanism 5, which includes a first filter screen 501, a second filter screen 502, a third filter screen 503, and a fourth filter screen 504. By pressing the button 401, the compression block 404 is moved. The connecting rod 407 on one side of the compression block 404 causes the locking block 408 to slide out of the first filter screen 501. The second return spring 409 returns to its original position, popping out the first filter screen 501. This mechanism can realize the quick installation, fixing, and disassembly of the filter mechanism 5, saving the time of the staff to replace and clean the filter mechanism 5. It also effectively avoids the filter box 2 from having too many gaps, which would affect the sealing performance.

[0032] Reference Figure 6 The first filter 501 is a ceramic filter, the second filter 502 is a zeolite molecular sieve filter, the third filter 503 is a copper oxide filter, and the fourth filter 504 is an activated carbon filter. The first filter 501, being a ceramic filter, can remove residual sulfides in the exhaust gas; the second filter 502, being a zeolite molecular sieve filter, can remove residual carbon dioxide in the exhaust gas; the third filter 503, being a copper oxide filter, can remove residual hydrocarbon gases in the exhaust gas; and the fourth filter 504, being an activated carbon filter, can remove odors from the exhaust gas, making the emitted gas more environmentally friendly and reducing the harm of the emitted exhaust gas to the human body.

[0033] Reference Figure 1 and Figure 2 A gas inlet 14 is fixedly connected to the middle of one side of the outer wall of the filter box 2. A second solenoid valve 13 is fixedly connected to the end of the gas inlet 14 away from the filter box 2. The second solenoid valve 13 controls the speed at which the exhaust gas enters the filter box 2. An outlet 12 is fixedly connected to the side of the second solenoid valve 13 away from the gas inlet 14. A deacidification tank 1 is fixedly connected to the side of the outlet 12 away from the second solenoid valve 13, which sends the deacidified exhaust gas into the filter box 2. An exhaust port 11 is fixedly connected to the middle of the outer wall of the filter box 2 away from the gas inlet 14. A first solenoid valve 10 is installed inside the exhaust port 11 to control the discharge of the filtered exhaust gas. A water outlet 8 is fixedly connected to the lower end of the outer wall of the deacidification tank 1 away from the exhaust port 12. An air inlet 7 is fixedly connected to the middle of the outer wall of the deacidification tank 1 away from the exhaust port 12. A water inlet 9 is fixedly connected to the top of the outer wall of the deacidification tank 1 away from the air inlet 7, thus achieving preliminary deacidification of the exhaust gas.

[0034] Reference Figure 1 , Figure 2 and Figure 4 The lower surface of the first reset spring 403 is fixedly connected to the filter box 2, the side of the compression spring 406 away from the compression block 404 is fixedly connected to the filter box 2, the locking block 408 slides in the first filter screen 501, the upper surface of the support block 402 is tightly fitted with the first filter screen 501 to realize the reset of the button 401 and the compression block 404, the locking block 408 supports the filter screen, the upper end of the outer wall of the rear end of the filter box 2 is fixedly connected to the hinge 6, and the upper surface of the 2 is rotatably connected to the flip cover 3 to realize the opening and closing of the flip cover 3.

[0035] In this embodiment, the sulfur recovery tail gas purification device can be used to introduce deacidification liquid through inlet 9 and acid gas through inlet 7 into deacidification tank 1. After deacidification, the dried tail gas is released from outlet 12 through the pipe in deacidification tank 1, and the deacidification liquid is released from outlet 8. Open the flip cover 3 and put the first filter screen 501 into the filter box 2. The first filter screen 501 compresses the second return spring 409, and the support block 402 fixes the first filter screen 501. The first filter screen 501, the second filter screen 502, the third filter screen 503 and the fourth filter screen 504 are put into the corresponding slots in sequence. The filtered tail gas is controlled by the first solenoid valve 10 to be discharged into the air through outlet 11. After filtration, press button 401 to drive the compression block 404 to move. The connecting rod 407 on one side of the compression block 404 drives the locking block 408 to slide out of the first filter screen 501. The second return spring 409 is reset, and the first filter screen 501 is popped out. The filter screen to be cleaned is taken out.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sulfur recovery tail gas purification device for LNG deacidification acid gas treatment, comprising a filter box (2), characterized in that: The filter box (2) is provided with quick disassembly mechanisms (4) at the front and rear ends of the upper surface. The quick disassembly mechanism (4) includes a button (401) slidably connected to the upper surface of the filter box (2). A first return spring (403) is fixedly connected to the lower surface of the button (401). A compression block (404) is provided on one side of the outer wall of the button (401). A connecting rod (407) is fixedly connected to the front end of the compression block (404). The rear end of one side of the outer wall of the compression block (404) is fixedly connected to the connecting rod (407). A first limiting rod (405) is connected, and a compression spring (406) is sleeved on the outer wall of the first limiting rod (405). A locking block (408) is fixedly connected to the rear end of one side of the outer wall of the connecting rod (407). A second limiting rod (4010) is fixedly connected to the front end and rear end of the inner bottom surface of the filter box (2). A support block (402) is fixedly connected to the upper surface of the second limiting rod (4010). A second reset spring (409) is sleeved on the outer wall of the second limiting rod (4010). The filter box (2) is provided with a filter mechanism (5), which includes a first filter (501), a second filter (502), a third filter (503) and a fourth filter (504) disposed inside the filter box (2).

2. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 1, characterized in that: The first filter screen (501) is a ceramic filter screen, the second filter screen (502) is a zeolite molecular sieve filter screen, the third filter screen (503) is a copper oxide filter screen, and the fourth filter screen (504) is an activated carbon filter screen.

3. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 1, characterized in that: An air inlet (14) is fixedly connected to the middle of one side outer wall of the filter box (2), and a second solenoid valve (13) is fixedly connected to the end of the air inlet (14) away from the filter box (2).

4. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 3, characterized in that: The second solenoid valve (13) is fixedly connected to an outlet (12) on the side away from the gas inlet (14), and the outlet (12) is fixedly connected to a deacidification tank (1) on the side away from the second solenoid valve (13).

5. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 1, characterized in that: The filter box (2) has a vent (11) fixedly connected to the middle of the outer wall on the side away from the air inlet (14), and a first solenoid valve (10) is provided inside the vent (11).

6. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 4, characterized in that: A water outlet (8) is fixedly connected to the lower end of the outer wall of the deacidification tank (1) on the side away from the air outlet (12), an air inlet (7) is fixedly connected to the middle part of the outer wall of the deacidification tank (1) on the side away from the air outlet (12), and a water inlet (9) is fixedly connected to the top of the outer wall of the deacidification tank (1) on the side away from the air inlet (7).

7. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 1, characterized in that: The lower surface of the first reset spring (403) is fixedly connected to the filter box (2), the side of the compression spring (406) away from the compression block (404) is fixedly connected to the filter box (2), the locking block (408) slides in the first filter screen (501), and the upper surface of the support block (402) is tightly fitted with the first filter screen (501).

8. The sulfur recovery tail gas purification device for LNG deacidification acid gas treatment according to claim 1, characterized in that: A hinge (6) is fixedly connected to the upper end of the outer wall of the rear end of the filter box (2), and a flip cover (3) is rotatably connected to the upper surface of the filter box (2).

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