A low concentration hydrogen sulfide treatment device

Abstract

The utility model discloses a low concentration hydrogen sulfide treatment device, its characterized in that, including two device main parts, the inside of device main part is provided with filter core, and the inside of filter core is provided with filter core inner tube, and the top of device main part is provided with second valve, and the one end intercommunication of two second valves has second three -way pipes, and the other end of second three -way pipe is the gas exhaust of standard gas, and the lower end intercommunication of device main part has fourth valve, and the one end intercommunication of two fourth valves has fourth three -way pipe, and the other end of fourth three -way pipe is gas inlet. This low concentration hydrogen sulfide treatment device, through setting alternately operated two groups of device main parts, filter core, realized the continuous high -efficient hydrogen sulfide treatment capacity, avoided the problem of shutdown replacement caused by adsorption saturation of traditional method, and the hydrogen sulfide that was enriched on filter core was sprayed reaction with high pressure atomization lye, and the reaction efficiency and removal effect were improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen sulfide treatment technology, and in particular to a low-concentration hydrogen sulfide treatment device. Background Technology

[0002] Currently, in the process of treating low-concentration hydrogen sulfide (usually referring to a concentration of about 10 mg / m³), two main methods are absorption and adsorption. The absorption method usually uses alkaline solution as the absorption medium, and the hydrogen sulfide and the alkali undergo a neutralization reaction through gas-liquid contact. The adsorption method mostly uses adsorbent materials with high specific surface area, such as activated carbon and zinc oxide, to physically or chemically adsorb hydrogen sulfide. After the adsorbent is saturated, it is replaced and treated.

[0003] However, these existing technologies have obvious limitations. The absorption method has low reaction efficiency when treating low concentrations of hydrogen sulfide, making it difficult to achieve complete removal. In addition, it consumes a large amount of alkali solution and has high operating costs. Although the adsorption method has good initial results, the adsorbent is easily saturated and needs to be replaced frequently and regenerated or disposed of by an external contractor. This not only makes the operation complex and causes long downtime, but also brings additional hazardous waste treatment costs and environmental risks. Overall, the existing methods are inadequate in terms of continuity, economy and treatment efficiency.

[0004] Therefore, it is necessary to propose a low-concentration hydrogen sulfide treatment device to solve the above problems. Utility Model Content

[0005] The main objective of this invention is to provide a low-concentration hydrogen sulfide treatment device, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A low-concentration hydrogen sulfide treatment device includes two main bodies. A filter element is installed inside the main body, and an inner tube is installed inside the filter element. A second valve is installed at the top of the main body. One end of the two second valves is connected to a second three-way pipe, and the other end of the second three-way pipe is a qualified gas outlet. A fourth valve is connected at the bottom of the main body. One end of the two fourth valves is connected to a fourth three-way pipe, and the other end of the fourth three-way pipe is a gas inlet.

[0008] The device body is provided with a spray pipe on its inner periphery. Atomizing nozzles are evenly arranged along the height direction on the side of the spray pipe near the filter element. A high-pressure dilution alkali inlet is connected to one side of the spray pipe.

[0009] A first valve is connected to one side of the upper part of the main body of the device. One end of the two first valves is connected to a first tee pipe, and the other end of the first tee pipe is a steam inlet. A third valve is connected to the bottom of the main body of the device. One end of the two third valves is connected to a third tee pipe, and the other end of the third tee pipe is a discharge port.

[0010] Preferably, the outlet is used to connect to an external sewage tank.

[0011] Preferably, the filter element is rotatably disposed inside the main body of the device, and a drive source for driving the main body of the device to rotate is provided at the bottom of the main body of the device.

[0012] Preferably, the drive source includes a pair of synchronous pulleys disposed in the middle and periphery of the bottom of the filter element, and synchronous belts are disposed on the two synchronous pulleys. A motor for driving the peripheral synchronous pulleys to rotate is disposed at the bottom of the main body of the device.

[0013] Preferably, the nozzle is connected to the high-pressure diluted alkali inlet via a movable sealing assembly. The movable sealing assembly includes a connecting seat embedded in the inner side wall of the main body of the device. The inner side of the connecting seat is provided with a cavity. A sealing groove is provided on the side of the connecting seat near the nozzle. A sealing slider is vertically and movably sealed on the inner side of the sealing groove. The nozzle and the sealing slider are connected via a connecting pipe, and the connecting pipe is connected to the cavity. The high-pressure diluted alkali inlet is connected to the side of the connecting seat away from the nozzle, and the high-pressure diluted alkali inlet is connected to the cavity.

[0014] Preferably, the lower outer side of the filter element is rotatably provided with a roller corresponding to the nozzle, so that the roller can push the nozzle upward when it passes the bottom of the nozzle.

[0015] Compared with the prior art, this utility model provides a low-concentration hydrogen sulfide treatment device, which has the following beneficial effects:

[0016] 1. This low-concentration hydrogen sulfide treatment device achieves continuous and efficient hydrogen sulfide treatment capacity by setting up two sets of main units and filter elements that can operate alternately. It avoids the downtime and replacement problems caused by adsorption saturation in traditional methods. It uses high-pressure atomized alkaline solution to spray and react the hydrogen sulfide enriched on the filter element, which significantly improves the reaction efficiency and removal effect. At the same time, it achieves online regeneration of the filter element and desorption of salt through steam backflushing, which greatly reduces operating costs, maintenance frequency and secondary pollution risk. Overall, it achieves automated, energy-saving and environmentally friendly stable operation.

[0017] 2. This low-concentration hydrogen sulfide treatment device, by rotating the filter element inside the main body of the device, facilitates an increase in the spray range of the spray pipe and atomizing nozzle, which can compensate for the uneven spraying caused by the gap between adjacent spray pipes. Furthermore, with the addition of movable sealing components and rollers, the spray pipe can be moved up and down while the filter element rotates, thereby compensating for the uneven spraying caused by the gap between adjacent atomizing nozzles and further improving the uniformity of spraying. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the main body of the device of this utility model;

[0020] Figure 3 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a utility model Figure 2 Enlarged view of section B in the middle.

[0022] In the diagram: 1. Main body of the device; 2. First valve; 3. Sealing groove; 4. First tee pipe; 5. Steam inlet; 6. Standard gas outlet; 7. Second tee pipe; 8. Second valve; 9. Sealing slider; 10. Third valve; 11. Roller; 12. Third tee pipe; 13. Outlet; 14. Fourth valve; 15. Connecting pipe; 16. Fourth tee pipe; 17. Gas inlet; 18. High-pressure diluted alkali inlet; 19. Filter element; 20. Inner tube of filter element; 21. Spray pipe; 22. Atomizing nozzle; 23. Motor; 24. Synchronous pulley; 25. Synchronous belt; 26. Connecting seat; 27. Cavity. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1-4 As shown, a low-concentration hydrogen sulfide treatment device includes two main body 1s. A filter element 19 is installed inside the main body 1. The filter element 19 uses activated carbon fiber as the adsorption filler, with a specific surface area >1500 m² / g. An inner filter tube 20 is installed inside the filter element 19. A second valve 8 is installed at the top of the main body 1. One end of the two second valves 8 is connected to a second three-way pipe 7, and the other end of the second three-way pipe 7 is a compliant gas outlet 6. A fourth valve 14 is connected to the bottom of the main body 1. One end of the two fourth valves 14 is connected to a fourth three-way pipe 16, and the other end of the fourth three-way pipe 16 is a gas inlet 17 with an inlet pressure of 2000-3000 Pa.

[0025] In order to remove hydrogen sulfide from filter element 19, a nozzle 21 is provided on the inner periphery of the main body 1 of the device. Atomizing nozzles 22 are evenly arranged along the height direction on the side of the nozzle 21 near filter element 19. A high-pressure dilution alkali inlet 18 is connected to one side of the nozzle 21, specifically a high-pressure 4% concentration liquid alkali with a pressure of 0.4-0.6 MPa.

[0026] To achieve online regeneration and salt desorption of the filter element, a first valve 2 is connected to one side of the upper part of the device body 1. One end of the two first valves 2 is connected to a first tee pipe 4, and the other end of the first tee pipe 4 is a steam inlet 5 with a steam temperature of 150-160℃ and a pressure of 0.3-0.4MPa. A third valve 10 is connected to the bottom of the device body 1. One end of the two third valves 10 is connected to a third tee pipe 12, and the other end of the third tee pipe 12 is a drain outlet 13, which is used to connect to an external sewage tank.

[0027] In addition, to improve the uniformity of the spraying reaction, the filter element 19 is rotatably mounted inside the device body 1. The bottom of the device body 1 is provided with a drive source for driving the device body 1 to rotate. As a preferred embodiment, the drive source includes a pair of synchronous pulleys 24 located in the middle and on the periphery of the bottom of the filter element 19. The two synchronous pulleys 24 are provided with synchronous belts 25. The bottom of the device body 1 is provided with a motor 23 for driving the peripheral synchronous pulleys 24 to rotate.

[0028] To further improve the uniformity of spraying, the spray pipe 21 is connected to the high-pressure diluted alkali inlet 18 through a movable sealing assembly. The movable sealing assembly includes a connecting seat 26 embedded in the inner side wall of the main body 1. A cavity 27 is provided on the inner side of the connecting seat 26. A sealing groove 3 is provided on the side of the connecting seat 26 near the spray pipe 21. A sealing slider 9 is vertically and movablely sealed on the inner side of the sealing groove 3. The spray pipe 21 and the sealing slider 9 are connected through a connecting pipe 15, and the connecting pipe 15 is connected to the cavity 27. The high-pressure diluted alkali inlet 18 is connected to the side of the connecting seat 26 away from the spray pipe 21, and the high-pressure diluted alkali inlet 18 is connected to the cavity 27. A roller 11 corresponding to the spray pipe 21 is rotatably provided on the outer side of the lower end of the filter element 19, so that when the roller 11 passes the bottom of the spray pipe 21, it can push the spray pipe 21 upward.

[0029] It should be noted that this utility model is a low-concentration hydrogen sulfide treatment device. In use, two main body 1 units are used in pairs, one as a standby. This is achieved by controlling the second valve 8 and the fourth valve 14. When the corresponding second valve 8 and fourth valve 14 on one main body 1 are opened, the corresponding second valve 8 and fourth valve 14 on the other main body 1 are closed. Low-concentration hydrogen sulfide gas enters from the bottom of one main body 1, specifically through gas inlet 17 into the fourth three-way pipe 16, and then through the fourth valve 14 into the inner side of the main body 1. Low-concentration hydrogen sulfide gas also enters from the outside of the filter element 19, where it is enriched. The clean gas passes through the inner tube 20 of the filter element and is discharged from the top of the main body 1. Specifically, it is discharged through the second valve 8 into the second three-way pipe 7, and then through the qualified gas outlet 6. Simultaneously, high-pressure 4% concentration liquid alkali is applied. The high-pressure diluted alkali solution enters the cavity 27 through the inlet 18, then enters the nozzle 21 through the connecting pipe 15, and then is intermittently sprayed onto the filter element 19 through the atomizing nozzle 22. This causes the hydrogen sulfide gas enriched on the filter element 19 to react with the liquid alkali to generate salt. After the adsorption is saturated, the second valve 8 and the fourth valve 14 corresponding to the main body 1 of the device are closed, and then the second valve 8 and the fourth valve 14 corresponding to the main body 1 of another device are opened. The low concentration of hydrogen sulfide gas is transferred from one main body 1 to another main body 1. The atomizing nozzle 22 of the closed main body 1 continues to spray onto the filter element 19 to ensure that all the hydrogen sulfide enriched on the filter element 19 is completely reacted. After the reaction is completed, the third valve 10 at the bottom of the closed main body 1 is opened and the first valve 2 at the top is opened. Steam is backflushed from the top to desorb the salt enriched on the filter element 19. Finally, the salt is discharged into the sewage tank through the outlet 13.

[0030] In addition, during use, the motor 23 drives the filter element 19 to rotate slowly through the cooperation of the synchronous pulley 24 and the synchronous belt 25. At the same time, the roller 11 follows the rotation of the filter element 19. When the roller 11 passes the bottom of the nozzle 21, it can push the nozzle 21 upward. Then, the nozzle 21 drives the sealing slider 9 to move inside the sealing groove 3 through the connecting pipe 15. The cavity 27 is always connected to the connecting pipe 15. After the roller 11 separates from the nozzle 21, the nozzle 21 falls back to its original position under its own weight, which improves the uniformity of spraying.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A low-concentration hydrogen sulfide treatment device, characterized in that, The device includes two main bodies (1), with a filter element (19) on the inner side of the main body (1) and a filter element inner tube (20) on the inner side of the filter element (19). A second valve (8) is provided at the top of the main body (1), and one end of the two second valves (8) is connected to a second three-way pipe (7). The other end of the second three-way pipe (7) is a qualified gas outlet (6). A fourth valve (14) is connected at the bottom of the main body (1), and one end of the two fourth valves (14) is connected to a fourth three-way pipe (16). The other end of the fourth three-way pipe (16) is a gas inlet (17). The device body (1) is provided with a nozzle (21) on its inner periphery. Atomizing nozzles (22) are uniformly arranged along the height direction on the side of the nozzle (21) near the filter element (19). A high-pressure dilution alkali inlet (18) is connected to one side of the nozzle (21). The upper side of the main body (1) of the device is connected to a first valve (2), one end of the two first valves (2) is connected to a first three-way pipe (4), the other end of the first three-way pipe (4) is a steam inlet (5), the bottom end of the main body (1) of the device is connected to a third valve (10), one end of the two third valves (10) is connected to a third three-way pipe (12), the other end of the third three-way pipe (12) is a drain (13).

2. The low-concentration hydrogen sulfide treatment device according to claim 1, characterized in that: The outlet (13) is used to connect to an external sewage tank.

3. The low-concentration hydrogen sulfide treatment device according to claim 1, characterized in that: The filter element (19) is rotatably disposed inside the device body (1), and a drive source for driving the device body (1) to rotate is provided at the bottom of the device body (1).

4. The low-concentration hydrogen sulfide treatment device according to claim 3, characterized in that: The drive source includes a pair of synchronous pulleys (24) located at the bottom center and periphery of the filter element (19), and synchronous belts (25) are provided on the two synchronous pulleys (24). A motor (23) for driving the peripheral synchronous pulleys (24) to rotate is provided at the bottom of the main body (1).

5. A low-concentration hydrogen sulfide treatment device according to claim 4, characterized in that: The nozzle (21) is connected to the high-pressure dilution alkali inlet (18) through a movable sealing assembly. The movable sealing assembly includes a connecting seat (26) embedded in the inner side wall of the main body (1) of the device. A cavity (27) is provided on the inner side of the connecting seat (26). A sealing groove (3) is provided on the side of the connecting seat (26) near the nozzle (21). A sealing slider (9) is vertically and movablely sealed on the inner side of the sealing groove (3). The nozzle (21) and the sealing slider (9) are connected through a connecting pipe (15), and the connecting pipe (15) is connected to the cavity (27). The high-pressure dilution alkali inlet (18) is connected to the side of the connecting seat (26) away from the nozzle (21), and the high-pressure dilution alkali inlet (18) is connected to the cavity (27).

6. A low-concentration hydrogen sulfide treatment device according to claim 5, characterized in that: The lower outer side of the filter element (19) is rotatably provided with a roller (11) corresponding to the nozzle (21), so that when the roller (11) passes the bottom of the nozzle (21), it can push the nozzle (21) upward.

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