Efficient hydrogen sulfide absorption tower for hydrogenation tail gas

Abstract

The utility model discloses an efficient hydrogen sulfide absorption tower for hydrogenation tail gas, which relates to the technical field of absorption towers, and comprises an absorption tower body, a rotary spraying mechanism, a gas inlet ring, a rotary frame body, an isolation component and a scraper blade, the rotary spraying mechanism is rotatably arranged at the upper part in the absorption tower body, and the gas inlet ring is arranged on the outer wall of the absorption tower body; a rotary frame body is installed at the bottom of the rotary spraying mechanism, a scraper is arranged at one end of a connecting rod, the isolation assembly comprises an isolation net and a transmission part, and the isolation net is installed on the transmission part; according to the utility model, the rotary spraying mechanism is arranged in the absorption tower body, and the rotary frame body is arranged at the bottom of the rotary spraying mechanism, so that an absorbent solution can be sprayed in a rotary manner, and further is in full contact with hydrogen sulfide gas, and the absorption efficiency of hydrogen sulfide is improved; the arranged rotary frame body can rotate along with the rotary spraying mechanism so as to drive the hydrogen sulfide gas in the absorption tower body to flow in an accelerated manner, so that the hydrogen sulfide gas is further in full contact with the absorbent solution.

Description

Technical Field

[0001] The utility model relates to the technical field of absorption towers, in particular to a high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas. Background Art

[0002] With the promotion of cleaner oil products, hydrotreating of oil products is inevitable, and a large amount of hydrogen sulfide tail gas will inevitably be generated during the hydrotreating process. The absorption of hydrogen sulfide tail gas generally relies on sodium hydroxide solution. The prior art can use low-concentration sodium hydroxide solution for multi-stage absorption, or can use organic desulfurization agents, ionic liquids, sodium sulfide solution, etc. to replace sodium hydroxide for efficient absorption.

[0003] Sodium hydroxide solution is a high-efficiency absorbent for hydrogen sulfide and is relatively inexpensive, being the mainstream absorbent. However, the existing absorption towers using sodium hydroxide solution as the absorbent have a low absorption efficiency for hydrogen sulfide, and the particulate matter generated during the process will adhere to the inner wall of the absorption tower, causing damage to the strength of the absorption tower. Therefore, the utility model proposes a high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas to solve the deficiencies in the prior art. Summary of the Utility Model

[0004] Aiming at the above problems, the purpose of the utility model is to provide a high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas. By arranging a rotary spraying mechanism inside the absorption tower body and a revolving frame body at the bottom of the rotary spraying mechanism, the absorbent solution can be sprayed in a rotating manner, so as to fully contact with hydrogen sulfide gas, improve the hydrogen sulfide absorption efficiency. The arranged revolving frame body can also drive the hydrogen sulfide gas inside the absorption tower body to flow at an accelerated speed by revolving along with the rotary spraying mechanism, so as to further fully contact with the absorbent solution.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas, comprising an absorption tower body, a rotary spraying mechanism, an air inlet ring, a revolving frame body, an isolation component and a scraper. The rotary spraying mechanism is rotatably arranged above the inside of the absorption tower body. An air inlet ring is arranged on the outer wall of the absorption tower body. An air inlet is arranged on the air inlet ring, and the air inlet communicates with the inside of the absorption tower body. A gas inlet pipe is connected to one side of the air inlet ring. A revolving frame body is installed at the bottom of the rotary spraying mechanism. A connecting rod is arranged at one side of the lower end of the revolving frame body. One end of the connecting rod is provided with a scraper, and one side of the scraper contacts the inner wall of the absorption tower body. An isolation component is arranged inside the absorption tower body below the revolving frame body. The isolation component comprises an isolation net and a transmission component, and the isolation net is installed on the transmission component;

[0007] The rotary spraying mechanism includes a liquid storage tank body, a liquid outlet, and a rotary driving assembly. A hollow shaft is provided at the top of the liquid storage tank body, and the hollow shaft is rotatably installed on the absorption tower body. A liquid outlet is provided at the bottom of the liquid storage tank body, and multiple groups of liquid outlets are provided. A rotary driving assembly is provided at the top of the absorption tower body, and the rotary driving assembly is connected to the hollow shaft. A liquid inlet pipe is provided inside the hollow shaft, and the lower end of the liquid inlet pipe is connected to the top of the liquid storage tank body through a sealing bearing.

[0008] A further improvement lies in that: the absorption tower body includes a tower frame, an upper tower body, a middle tower body, and a lower tower body. The lower tower body is installed on the tower frame, the middle tower body is provided above the lower tower body, and the upper tower body is provided above the middle tower body. The rotary spraying mechanism and the rotary frame body are both arranged inside the upper tower body, the isolation component is arranged inside the middle tower body, and a discharge pipe is provided at the bottom of the lower tower body.

[0009] A further improvement lies in that: the rotary frame body includes a shaft rod and rotary plates. The shaft rod is arranged at the bottom of the liquid storage tank body, and rotary plates are provided on both side walls of the shaft rod. Multiple groups of rotary plates are provided, and one end of the connecting rod is connected to one side of the lower end of the shaft rod.

[0010] A further improvement lies in that: the transmission component includes a driving roller, a driven roller, and a driving motor. The driving roller is rotatably arranged on one side inside the middle tower body, the driven roller is rotatably arranged on the other side inside the middle tower body, the isolation net is connected to the driving roller and the driven roller, and a driving motor is provided on the outer wall of the middle tower body, and the driving motor drives the driving roller to rotate.

[0011] A further improvement lies in that: the rotary driving assembly includes a rotating motor, a driving gear, and a driven gear. The upper end of the hollow shaft extends out of the top of the upper tower body and is installed with the driven gear. A rotating motor is provided at the top of the upper tower body, and a driving gear is provided at the output end of the rotating motor, and the driving gear meshes with the driven gear.

[0012] A further improvement lies in that: a cleaning brush plate is provided inside the middle tower body below the driving roller and the driven roller. The bristles of the cleaning brush plate are attached to the bottom of the isolation net, and a collecting tank body is provided at the bottom of the middle tower body at the position of the cleaning brush plate, and the collecting tank body is communicated with the inside of the middle tower body.

[0013] The beneficial effects of the present utility model are as follows: by arranging a rotary spraying mechanism inside the absorption tower body and arranging a rotary frame body at the bottom of the rotary spraying mechanism, the absorbent solution can be sprayed in a rotating manner, thereby realizing full contact with hydrogen sulfide gas and improving the hydrogen sulfide absorption efficiency. The arranged rotary frame body can also drive the hydrogen sulfide gas inside the absorption tower body to flow at an accelerated speed by following the rotation of the rotary spraying mechanism, so as to further fully contact with the absorbent solution;

[0014] The utility model realizes scraping off the particulate matters adsorbed on the inner wall of the absorption tower body by driving a scraper at one end of a connecting rod on a revolving frame body, in cooperation with an isolation assembly arranged below the revolving frame body, and intercepting and collecting the particles by using the isolation assembly, so as to avoid excessive attachment of crystal particles and affect the structural strength and stability of the absorption tower body. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of the structure of the utility model;

[0016] Figure 2 is a front view schematic diagram of the installation structure of the revolving spraying mechanism of the utility model;

[0017] Figure 3 is a front view schematic diagram of the installation of the isolation assembly of the utility model;

[0018] Figure 4 is a three-dimensional schematic diagram of the installation structure of the air inlet of the utility model;

[0019] Figure 5 is a three-dimensional schematic diagram of the installation structure of the liquid inlet pipe of the utility model.

[0020] Wherein: 1. Absorption tower body; 101. Tower frame; 102. Upper tower body; 103. Middle tower body; 104. Lower tower body; 105. Discharge pipe; 2. Air inlet ring; 3. Revolving frame body; 301. Shaft rod; 302. Revolving plate; 4. Scraper; 5. Air inlet; 6. Air inlet pipe; 7. Connecting rod; 8. Isolation net; 9. Liquid storage tank body; 10. Liquid outlet; 11. Hollow shaft; 12. Liquid inlet pipe; 13. Sealed bearing; 14. Driving roller; 15. Driven roller; 16. Driving motor; 17. Rotating motor; 18. Driving gear; 19. Driven gear; 20. Cleaning brush plate; 21. Collection tank body. Specific Embodiment

[0021] In order to deepen the understanding of the utility model, the following will further describe the utility model in detail with reference to the embodiments. These embodiments are only used to explain the utility model and do not limit the protection scope of the utility model.

[0022] According to Figures 1-5As shown in the figure, this embodiment provides a high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas, which includes an absorption tower body 1, a rotary spraying mechanism, an air inlet ring 2, a rotary frame body 3, an isolation component and a scraper 4. A rotary spraying mechanism is rotatably arranged above the interior of the absorption tower body 1. An air inlet ring 2 is arranged on the outer wall of the absorption tower body 1. An air inlet 5 is arranged on the air inlet ring 2, and the air inlet 5 communicates with the interior of the absorption tower body 1. One side of the air inlet ring 2 is connected with an air inlet pipe 6. A rotary frame body 3 is installed at the bottom of the rotary spraying mechanism. One side of the lower end of the rotary frame body 3 is provided with a connecting rod 7. One end of the connecting rod 7 is provided with a scraper 4. One side of the scraper 4 contacts the inner wall of the absorption tower body 1. An isolation component is arranged inside the absorption tower body 1 below the rotary frame body 3. The isolation component includes an isolation net 8 and a transmission component, and the isolation net 8 is installed on the transmission component;

[0023] The rotary spraying mechanism includes a liquid storage tank body 9, a liquid outlet 10 and a rotary driving component. A hollow shaft 11 is arranged at the top of the liquid storage tank body 9. The hollow shaft 11 is rotatably installed with the absorption tower body 1. The bottom of the liquid storage tank body 9 is provided with a liquid outlet 10, and multiple groups of liquid outlets 10 are provided. A rotary driving component is arranged at the top of the absorption tower body 1, and the rotary driving component is connected with the hollow shaft 11. A liquid inlet pipe 12 is arranged inside the hollow shaft 11, and the lower end of the liquid inlet pipe 12 is connected with the top of the liquid storage tank body 9 through a sealing bearing 13.

[0024] When the high-efficiency hydrogen sulfide absorption tower of the present utility model is used for hydrogen sulfide gas absorption, the hydrogen sulfide gas enters the interior of the air inlet ring 2 from the air inlet pipe 6, then enters the interior of the absorption tower body 1 from the air inlet 5, and then the absorbent solution enters the interior of the liquid storage tank body 9 from the liquid inlet pipe 12. Then the rotary driving component drives the liquid storage tank body 9 installed through the hollow shaft 11 to rotate. The absorbent solution in the liquid storage tank body 9 comes out from the liquid outlet 10 and is mixed with the hydrogen sulfide gas to absorb it. During the process, the rotary frame body 3 will also rotate along with the liquid storage tank body 9, and the rotary frame body 3 drives the hydrogen sulfide gas to flow to achieve sufficient contact with the absorbent solution; the particulate matter adsorbed on the inner wall of the absorption tower body 1 will be scraped off by the scraper 4 connected with the rotary frame body 3, and the scraped particulate matter falls onto the isolation net 8 of the isolation component and is collected.

[0025] The absorption tower body 1 includes a tower frame 101, an upper tower body 102, an intermediate tower body 103 and a lower tower body 104. The lower tower body 104 is installed on the tower frame 101. The intermediate tower body 103 is arranged above the lower tower body 104. The upper tower body 102 is arranged above the intermediate tower body 103. The rotary spraying mechanism and the rotary frame body 3 are both arranged inside the upper tower body 102. The isolation component is arranged inside the intermediate tower body 103. A discharge pipe 105 is arranged at the bottom of the lower tower body 104.

[0026] The revolving frame body 3 includes a shaft rod 301 and a revolving plate 302. The shaft rod 301 is arranged at the bottom of the liquid storage tank body 9. Revolving plates 302 are provided on both side walls of the shaft rod 301. A plurality of groups of revolving plates 302 are provided. One end of the connecting rod 7 is connected to one side of the lower end of the shaft rod 301. During the rotation of the liquid storage tank body 9, the shaft rod 301 follows synchronously, and then the revolving plates 302 will also rotate, so as to promote the rapid flow of hydrogen sulfide gas inside the absorber body 1 and then contact and mix with the absorbent solution.

[0027] The transmission component includes a driving roller 14, a driven roller 15 and a driving motor 16. The driving roller 14 is rotatably arranged on one side inside the middle tower body 103, and the driven roller 15 is rotatably arranged on the other side inside the middle tower body 103. The isolation net 8 is connected to the driving roller 14 and the driven roller 15. The driving motor 16 is arranged on the outer wall of the middle tower body 103, and the driving motor 16 drives the driving roller 14 to rotate. After starting the driving motor 16, the driving roller 14 can be driven to rotate, and then the driven roller 15 can be cooperated to drive the isolation net 8 to continuously transmit, so as to transfer the particulate matter collected on the isolation net 8 into the collection tank body 21.

[0028] The rotary driving assembly includes a rotary motor 17, a driving gear 18 and a driven gear 19. The upper end of the hollow shaft 11 extends out of the top of the upper tower body 102 and is provided with the driven gear 19. The rotary motor 17 is arranged at the top of the upper tower body 102, and the output end of the rotary motor 17 is provided with the driving gear 18. The driving gear 18 meshes with the driven gear 19. By starting the rotary motor 17 to drive the driving gear 18 to rotate, the driving gear 18 can drive the hollow shaft 11 provided with the driven gear 19 to rotate, and the rotation of the hollow shaft 11 can drive the liquid storage tank body 9 to rotate.

[0029] A cleaning brush plate 20 is arranged inside the middle tower body 103 below the driving roller 14 and the driven roller 15. The bristles of the cleaning brush plate 20 are attached to the bottom of the isolation net 8. A collection tank body 21 is arranged at the bottom of the middle tower body 103 at the position of the cleaning brush plate 20. The collection tank body 21 is communicated with the inside of the middle tower body 103. By arranging the cleaning brush plate 20, the isolation net 8 can be cleaned to prevent the intercepted particulate matter from blocking the isolation net 8.

[0030] The utility model realizes the spraying of the absorbent solution in a rotating manner by arranging a rotary spraying mechanism inside the absorber body 1 and a rotating frame body 3 at the bottom of the rotary spraying mechanism, so as to achieve full contact with hydrogen sulfide gas and improve the hydrogen sulfide absorption efficiency. The arranged rotating frame body 3 can also drive the hydrogen sulfide gas inside the absorber body 1 to flow at an accelerated rate by rotating following the rotary spraying mechanism, so as to further fully contact with the absorbent solution; the utility model realizes scraping off the particulate matters adsorbed on the inner wall of the absorber body 1 by driving a scraper during the rotation of the rotary spraying mechanism by arranging a scraper 4 at one end of a connecting rod 7 on the rotating frame body 3 and cooperating with an isolation component arranged below the rotating frame body 3, and intercepting and collecting the particles by using the isolation component, so as to avoid the influence of excessive crystal particles attachment on the structural strength and stability of the absorber body 1.

[0031] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas, characterized in that: The invention comprises an absorption tower body (1), a rotary spray mechanism, an air intake ring (2), a rotary frame (3), an isolation component and a scraper (4); a rotary spray mechanism is rotatably arranged on the upper part of the absorption tower body (1); an air intake ring (2) is arranged on the outer wall of the absorption tower body (1); an air intake port (5) is arranged on the air intake ring (2); the air intake port (5) is connected to the inside of the absorption tower body (1); one side of the air intake ring (2) is connected to an air intake pipe (6); a rotary frame (3) is installed at the bottom of the rotary spray mechanism; a connecting rod (7) is arranged on one side of the lower end of the rotary frame (3); a scraper (4) is arranged at one end of the connecting rod (7); one side of the scraper (4) contacts the inner wall of the absorption tower body (1); an isolation component is arranged inside the absorption tower body (1) below the rotary frame (3); the isolation component comprises an isolation net (8) and a transmission component; the isolation net (8) is installed on the transmission component; The rotary spray mechanism comprises a liquid storage tank body (9), a liquid outlet (10) and a rotary drive assembly. The top of the liquid storage tank body (9) is provided with a hollow shaft (11), and the hollow shaft (11) is rotatably mounted with the absorption tower body (1). The bottom of the liquid storage tank body (9) is provided with a liquid outlet (10), and the liquid outlet (10) is provided with a plurality of groups. The top of the absorption tower body (1) is provided with a rotary drive assembly, and the rotary drive assembly is connected to the hollow shaft (11). A liquid inlet pipe (12) is provided inside the hollow shaft (11), and the lower end of the liquid inlet pipe (12) is connected to the top of the liquid storage tank body (9) via a sealing bearing (13).

2. The high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas according to claim 1, characterized in that: The absorption tower body (1) comprises a tower frame (101), an upper tower body (102), an intermediate tower body (103) and a lower tower body (104); the lower tower body (104) is mounted on the tower frame (101); the intermediate tower body (103) is arranged above the lower tower body (104); the upper tower body (102) is arranged above the intermediate tower body (103); the rotary spray mechanism and the rotary frame (3) are both arranged inside the upper tower body (102); the isolation assembly is arranged inside the intermediate tower body (103); and a discharge pipe (105) is arranged at the bottom of the lower tower body (104).

3. The high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas according to claim 1, characterized in that: The rotating frame body (3) comprises a shaft (301) and a rotating plate (302); the shaft (301) is arranged at the bottom of the liquid storage tank body (9); rotating plates (302) are arranged on both side walls of the shaft (301); the rotating plates (302) are arranged in multiple groups; one end of the connecting rod (7) is connected to one side of the lower end of the shaft (301).

4. The high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas according to claim 2, characterized in that: The transmission component comprises a driving roller (14), a driven roller (15) and a driving motor (16); a driving roller (14) is rotatably provided on one side of the middle tower body (103); a driven roller (15) is rotatably provided on the other side of the middle tower body (103); the isolation net (8) connects the driving roller (14) and the driven roller (15); a driving motor (16) is provided on the outer wall of the middle tower body (103); and the driving motor (16) drives the driving roller (14) to rotate.

5. The high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas according to claim 2, characterized in that: The rotary drive assembly comprises a rotary motor (17), a driving gear (18) and a driven gear (19); the upper end of the hollow shaft (11) extends out of the top of the upper tower body (102) and is provided with the driven gear (19); the top of the upper tower body (102) is provided with a rotary motor (17); the output end of the rotary motor (17) is provided with a driving gear (18); the driving gear (18) is meshed with the driven gear (19).

6. The high-efficiency hydrogen sulfide absorption tower for hydrogenation tail gas according to claim 4, characterized in that: A cleaning brush plate (20) is provided inside the middle tower body (103) below the active roller (14) and the driven roller (15), and the bristles of the cleaning brush plate (20) are attached to the bottom of the isolation net (8). A collecting trough (21) is provided at the bottom of the middle tower body (103) at the position of the cleaning brush plate (20), and the collecting trough (21) is communicated with the inside of the middle tower body (103).

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