Pre-washing tower device capable of automatically changing water before biogas desulfurization

Abstract

The utility model discloses a pre-washing tower device capable of automatically changing water before biogas desulfurization, and relates to the technical field of biogas desulfurization equipment. Comprising a base, a desulfurizing tower is fixedly arranged at the top of the base, a pre-washing tower body is fixedly arranged on one side of the desulfurizing tower, and an air inlet is fixedly formed in one side of the pre-washing tower body. By arranging the mounting box, the limiting block, the dehumidification plate, the mounting plate, the fixing bolt and the handle, when biogas enters the gas inlet through the gas inlet pipe, the dehumidification plate in the mounting box can effectively remove moisture in the biogas so as to reduce the moisture content in the biogas, so that a desulfurization solution can more effectively react with sulfides such as hydrogen sulfide, the desulfurization efficiency is improved, and the desulfurization cost is reduced. The fixing bolt is rotated until the limit of the mounting plate is released, and the handle can be pulled to pull out the mounting plate and the dehumidification plate, so that a worker can conveniently clean or replace the dehumidification plate, it is ensured that the dehumidification plate has high dehumidification performance, and the dehumidification efficiency and effect of the dehumidification plate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biogas desulfurization equipment, in particular to a biogas desulfurization pre-wash tower device with automatic water exchange. Background Art

[0002] Before the biogas enters the desulfurization tower, the solid particles such as sulfur powder in the biogas can be washed and settled by the pre-wash tower device to achieve the purpose of preliminary purification. Therefore, the pre-wash tower device plays a role in protecting the desulfurization tower and improving the desulfurization efficiency. At the same time, it can also adjust the temperature and pressure of the biogas to make it more suitable for subsequent desulfurization treatment.

[0003] Chinese utility model patent CN219848950U discloses a multi-stage absorption tower, comprising a tower base, a tower body, a pre-washing tower, and a spray liquid circulation mechanism. The tower body is fixedly mounted on the top of the tower base, the pre-washing tower is fixedly mounted on the right side wall of the tower body, the pre-washing tower is L-shaped, and is connected to the interior of the tower body. An exhaust gas inlet pipe is fixedly mounted on the right side wall of the pre-washing tower, a pre-washing spray pipe is fixedly mounted inside the pre-washing tower, and a plurality of pre-washing nozzles are fixedly mounted on the pre-washing spray pipe at equal intervals, with one end of the pre-washing spray pipe extending outside the pre-washing tower. The utility model has the following advantages and effects: while performing multi-stage treatment on the exhaust gas, the used spray liquid can be filtered and recycled for multiple spraying uses, ensuring smooth spraying of the spray liquid, making the use rate of the spray liquid more sufficient, reducing the waste of spray liquid resources, and improving the quality of exhaust gas purification treatment.

[0004] In order to carry out preliminary purification of biogas, the above-mentioned multi-stage absorption tower is provided with a pre-wash spray pipe and a pre-wash nozzle in the pre-wash tower. However, the above-mentioned multi-stage absorption tower does not have the function of dehydrating biogas. If the biogas contains a high amount of water, the water may occupy some active sites of the desulfurizer or react unnecessarily with the desulfurizer, which may affect the reaction efficiency of the desulfurizer with sulfides such as hydrogen sulfide, thereby reducing the utilization rate of the desulfurizer and the desulfurization effect. Utility Model Content

[0005] The utility model provides a biogas desulfurization pre-wash tower device with automatic water exchange, so as to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pre-wash tower device for biogas desulfurization with automatic water exchange, comprising a base, a desulfurization tower is fixedly arranged on the top of the base, a pre-wash tower body is fixedly arranged on one side of the desulfurization tower, an air inlet is fixedly arranged on one side of the pre-wash tower body, a mounting box is fixedly arranged on one side of the air inlet, an air inlet pipe is fixedly arranged on one side of the mounting box, a limiting groove is provided at the bottom of the inner wall of the mounting box, and a limiting block is movably provided in the limiting groove, a dehumidification plate is fixedly arranged on the top of the limiting block, a mounting plate is fixedly arranged on the top of the dehumidification plate, and the mounting plate There are screw holes at the four corners, and fixing bolts are movably provided in the screw holes. The connection relationship between the fixing bolts and the mounting box is movably plugged in. A handle is fixedly provided in the middle of the top of the mounting plate. A pre-wash spray pipe is fixedly provided inside the pre-wash tower body, and a pre-wash nozzle is fixedly provided at the bottom of the pre-wash spray pipe. A PH detection rod is fixedly provided on the lower part of one side of the inner wall of the desulfurization tower, a PLC controller is fixedly provided on one side of the desulfurization tower, and a liquid inlet pipe is fixedly provided on the bottom of one side of the desulfurization tower. One end of the liquid inlet pipe is fixedly connected to the water outlet end of the liquid pump, and a connecting pipe is fixedly provided on the water inlet end of the liquid pump.

[0007] Furthermore, an arc-shaped filter is fixedly installed inside the desulfurization tower.

[0008] Furthermore, a liquid suction pipe is fixedly provided at the bottom of the other side of the desulfurization tower, and one end of the liquid suction pipe is fixedly connected to the water inlet end of the booster pump.

[0009] Furthermore, a liquid outlet pipe is fixedly provided at the water outlet end of the booster pump, and a circulation nozzle is fixedly provided at one end of the liquid outlet pipe.

[0010] Furthermore, a circulation nozzle is fixedly provided at the bottom of the circulation nozzle.

[0011] Furthermore, a drain pipe is fixedly provided at the bottom of the front side of the desulfurization tower, and a valve is provided inside the drain pipe.

[0012] Compared with the existing technology, the utility model provides a pre-wash tower device for biogas desulfurization with automatic water exchange, which has the following beneficial effects:

[0013] 1. The automatic water-changing pre-wash tower device for biogas desulfurization is provided with an installation box, a limit block, a dehumidification plate, a mounting plate, fixing bolts and a handle. When the biogas enters the air inlet through the air inlet pipe, the dehumidification plate in the installation box can effectively remove moisture from the biogas to reduce the moisture content in the biogas, thereby enabling the desulfurization liquid to react more effectively with sulfides such as hydrogen sulfide, thereby improving the desulfurization efficiency. The fixing bolts are turned until the limit of the mounting plate is released, and the mounting plate and the dehumidification plate are pulled out by pulling the handle. The operation is simple, which provides great convenience for the staff to clean or replace the dehumidification plate, helps to ensure that the dehumidification plate has a strong dehumidification performance, and also reduces the risk of impurities and dirt accumulating on the surface of the dehumidification plate affecting its dehydration effect, thereby improving the dehumidification efficiency and effect of the dehumidification plate.

[0014] 2. The automatic water-changing pre-wash tower device for biogas desulfurization is equipped with a pH detection stick, a PLC controller, a liquid inlet pipe, a liquid pump and a connecting pipe, and the connecting pipe is connected to the external desulfurization liquid delivery pipeline. The pH threshold detected by the pH detection stick is set by the PLC controller. The pH detection stick can monitor the pH of the desulfurization liquid in the desulfurization tower in real time. When the pH of the desulfurization liquid exceeds the threshold, the pH detection stick will transmit a signal to the PLC controller to open the valve and the desulfurization liquid flows out from the drain pipe. After the desulfurization liquid is discharged, the liquid pump is started to transport the new desulfurization liquid into the desulfurization tower through the connecting pipe and the liquid inlet pipe, thereby realizing real-time monitoring and automatic replacement of the pH of the desulfurization liquid, avoiding changes in the pH of the desulfurization liquid after recycling, and improving the desulfurization effect of biogas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a front view of the structure of the utility model;

[0017] Figure 3 This is a structural sectional view of the installation box of the present utility model.

[0018] In the figure: 1. Base; 201. Desulfurization tower; 202. Pre-wash tower body; 203. Air inlet; 204. Installation box; 205. Air inlet pipe; 301. Limit block; 302. Dehumidification plate; 303. Installation plate; 304. Fixing bolt; 305. Handle; 306. Pre-wash spray pipe; 307. Pre-wash nozzle; 308. pH test stick; 309. PLC controller; 310. Liquid inlet pipe; 311. Liquid pump; 312. Connecting pipe; 401. Arc filter; 402. Liquid suction pipe; 403. Booster pump; 404. Liquid outlet pipe; 405. Circulation nozzle; 406. Circulation nozzle; 407. Liquid discharge pipe; 408. Valve. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-3 The utility model discloses a pre-wash tower device for biogas desulfurization with automatic water exchange, comprising a base 1, a desulfurization tower 201 is fixedly arranged on the top of the base 1, a pre-wash tower body 202 is fixedly arranged on one side of the desulfurization tower 201, an air inlet 203 is fixedly arranged on one side of the pre-wash tower body 202, a mounting box 204 is fixedly arranged on one side of the air inlet 203, an air intake pipe 205 is fixedly arranged on one side of the mounting box 204, a limiting groove is provided at the bottom of the inner wall of the mounting box 204, and a limiting block 301 is movably provided in the limiting groove, a dehumidification plate 302 is fixedly provided on the top of the limiting block 301, a mounting plate 303 is fixedly provided on the top of the dehumidification plate 302, and screw holes are provided at the four corners of the mounting plate 303. A fixing bolt 304 is movably provided in the screw hole, and the connection relationship between the fixing bolt 304 and the installation box 204 is a movable plug-in. A handle 305 is fixedly provided in the middle of the top of the installation plate 303, and a pre-wash spray pipe 306 is fixedly provided inside the pre-wash tower body 202. A pre-wash nozzle 307 is fixedly provided at the bottom of the pre-wash spray pipe 306. A pH detection rod 308 is fixedly provided at the lower part of one side of the inner wall of the desulfurization tower 201, a PLC controller 309 is fixedly provided on one side of the desulfurization tower 201, and a liquid inlet pipe 310 is fixedly provided at the bottom of one side of the desulfurization tower 201. One end of the liquid inlet pipe 310 is fixedly connected to the water outlet end of the liquid pump 311, and a connecting pipe 312 is fixedly provided at the water inlet end of the liquid pump 311.

[0021] Specifically, an arc-shaped filter screen 401 is fixedly installed inside the desulfurization tower 201 .

[0022] In this embodiment, by providing the arc filter 401, the arc filter 401 can intercept solid impurities and solid neutralization products while allowing the desulfurization liquid to pass smoothly, thereby achieving filtration of the desulfurization liquid.

[0023] Specifically, a liquid suction pipe 402 is fixedly provided at the bottom of the other side of the desulfurization tower 201 , and one end of the liquid suction pipe 402 is fixedly connected to the water inlet end of the boosting pump 403 .

[0024] In this embodiment, by providing a liquid suction pipe 402 and a booster pump 403 , after the booster pump 403 is started, the desulfurization liquid inside the desulfurization tower 201 can be pumped into the liquid suction pipe 402 for recycling.

[0025] Specifically, a liquid outlet pipe 404 is fixedly provided at the water outlet end of the booster pump 403 , and a circulation nozzle 405 is fixedly provided at one end of the liquid outlet pipe 404 .

[0026] In this embodiment, by providing a liquid outlet pipe 404 and a circulation nozzle 405, the desulfurization liquid in the liquid suction pipe 402 enters the circulation nozzle 405 through the liquid outlet pipe 404 under the action of the booster pump 403, thereby realizing the extraction and transportation of the desulfurization liquid.

[0027] Specifically, a circulation nozzle 406 is fixedly provided at the bottom of the circulation nozzle 405 .

[0028] In this embodiment, by providing the circulation nozzles 406 , a plurality of evenly arranged circulation nozzles 406 enable the desulfurization liquid to contact the biogas more evenly and react with the biogas to neutralize the desulfurization liquid, thereby improving the purification effect of the biogas.

[0029] Specifically, a drain pipe 407 is fixedly provided at the bottom of the front side of the desulfurization tower 201 , and a valve 408 is provided inside the drain pipe 407 .

[0030] In this embodiment, by providing a liquid discharge pipe 407 and a valve 408, the desulfurization liquid can be quickly discharged by controlling the valve 408, thereby increasing the discharge rate of the desulfurization liquid and reducing the workload of the staff.

[0031] When in use, the pre-wash spray pipe 306 and the connecting pipe 312 are respectively connected to the external desulfurization liquid delivery pipeline, and then the pH threshold value detected by the pH detection stick 308 is set through the PLC controller 309. When the biogas enters the installation box 204 through the air inlet pipe 205, the dehumidification plate 302 can remove the moisture in the biogas. The dried biogas enters the pre-wash tower body 202 through the air inlet 203. The desulfurization liquid sprayed by the pre-wash nozzle 307 will react with the biogas to achieve the purpose of preliminary purification of the biogas. The preliminarily purified waste gas and solid impurities as well as The solid neutralized product then enters the desulfurization tower 201 for further desulfurization and purification. During the biogas purification process, the sprayed desulfurized liquid, solid impurities and solid neutralized product fall onto the arc filter 401 under the action of gravity. The arc filter 401 can filter the solid impurities and solid neutralized product therein. The desulfurized liquid after the reaction will fall into the bottom of the desulfurization tower 201. The booster pump 403 is started. The booster pump 403 extracts the desulfurized liquid in the desulfurization tower 201 and transports it to the liquid outlet pipe 404 through the liquid suction pipe 402. Finally, the circulating nozzle 405 is used to spray the circulating liquid. The nozzle 406 sprays out the desulfurization liquid, so that it can react with the biogas entering the desulfurization tower 201 again to neutralize it, thereby realizing the recycling of the desulfurization liquid. The pH detection rod 308 can monitor the pH value of the desulfurization liquid in the desulfurization tower 201 in real time. When the pH value of the desulfurization liquid exceeds the threshold value, the pH detection rod 308 will transmit a signal to the PLC controller 309, so that the valve 408 opens and the desulfurization liquid flows out from the drain pipe 407. After the desulfurization liquid is discharged, the valve 408 is closed and the liquid pump 311 is started to transport the new desulfurization liquid into the desulfurization tower 201 through the connecting pipe 312 and the liquid inlet pipe 310, thereby realizing In order to realize real-time monitoring and automatic replacement of the pH value of the desulfurization liquid, when the dehumidification plate 302 needs to be cleaned or replaced, the fixing bolt 304 is rotated until the limit of the mounting plate 303 is released. The staff can then pull the handle 305 to pull out the mounting plate 303 and the dehumidification plate 302, and then clean or replace the dehumidification plate 302. After the operation is completed, the dehumidification plate 302 is inserted into the mounting box 204, and the limiting block 301 is then inserted into the limiting groove to achieve the purpose of limiting the dehumidification plate 302, and then the fixing bolt 304 is rotated in the opposite direction to fix the dehumidification plate 302.

[0032] In summary, the biogas pre-desulfurization pre-wash tower device with automatic water exchange is provided with an installation box 204, a limit block 301, a dehumidifying plate 302, a mounting plate 303, a fixing bolt 304 and a handle 305. When the biogas enters the air inlet 203 through the air inlet pipe 205, the dehumidifying plate 302 in the installation box 204 can effectively remove the moisture in the biogas to reduce the moisture content in the biogas, thereby enabling the desulfurization liquid to react more effectively with sulfides such as hydrogen sulfide, thereby improving the desulfurization efficiency. The fixing bolt 304 is rotated until the limit of the mounting plate 303 is released, and the handle 305 is pulled out to pull out the mounting plate 303 and the dehumidifying plate 302. The operation is simple, which provides great convenience for the staff to clean or replace the dehumidifying plate 302, helps to ensure that the dehumidifying plate 302 has a strong dehumidification performance, and also reduces the risk of impurities and dirt accumulated on the surface of the dehumidifying plate 302 affecting its dehydration effect, thereby improving the dehumidification efficiency. In order to improve the dehumidification efficiency and effect, a pH detection rod 308, a PLC controller 309, a liquid inlet pipe 310, a liquid pump 311 and a connecting pipe 312 are set, and the connecting pipe 312 is connected to the external desulfurization liquid delivery pipeline. The pH threshold detected by the pH detection rod 308 is set by the PLC controller 309. The pH detection rod 308 can monitor the pH of the desulfurization liquid in the desulfurization tower 201 in real time. When the pH of the desulfurization liquid exceeds the threshold, the pH detection rod 308 will transmit a signal to the PLC controller 309, so that the valve 408 opens and the desulfurization liquid flows out from the discharge pipe 407. After the desulfurization liquid is discharged, the liquid pump 311 is started to transport the new desulfurization liquid into the desulfurization tower 201 through the connecting pipe 312 and the liquid inlet pipe 310, thereby realizing real-time monitoring and automatic replacement of the pH of the desulfurization liquid, avoiding changes in the pH of the desulfurization liquid after recycling, and improving the desulfurization effect of biogas.

[0033] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pre-wash tower device for biogas desulfurization with automatic water exchange, comprising a base (1), characterized in that: A desulfurization tower (201) is fixedly provided on the top of the base (1), a pre-wash tower body (202) is fixedly provided on one side of the desulfurization tower (201), an air inlet (203) is fixedly provided on one side of the pre-wash tower body (202), a mounting box (204) is fixedly provided on one side of the air inlet (203), an air inlet pipe (205) is fixedly provided on one side of the mounting box (204), a limiting groove is provided at the bottom of the inner wall of the mounting box (204), and a limiting block (301) is movably provided in the limiting groove, a dehumidification plate (302) is fixedly provided on the top of the limiting block (301), a mounting plate (303) is fixedly provided on the top of the dehumidification plate (302), screw holes are provided at four corners of the mounting plate (303), and fixing bolts (304) are movably provided in the screw holes. The connection relationship between the fixing bolt (304) and the installation box (204) is a movable plug-in connection. A handle (305) is fixedly provided in the middle of the top of the installation plate (303). A pre-wash spray pipe (306) is fixedly provided inside the pre-wash tower body (202). A pre-wash nozzle (307) is fixedly provided at the bottom of the pre-wash spray pipe (306). A pH detection rod (308) is fixedly provided at the lower part of one side of the inner wall of the desulfurization tower (201). A PLC controller (309) is fixedly provided on one side of the desulfurization tower (201). A liquid inlet pipe (310) is fixedly provided at the bottom of one side of the desulfurization tower (201). One end of the liquid inlet pipe (310) is fixedly connected to the water outlet end of the liquid pump (311), and a connecting pipe (312) is fixedly provided at the water inlet end of the liquid pump (311).

2. The automatic water-changing pre-wash tower device for biogas desulfurization according to claim 1 is characterized in that: An arc-shaped filter screen (401) is fixedly provided inside the desulfurization tower (201).

3. The automatic water-changing pre-wash tower device for biogas desulfurization according to claim 1 is characterized in that: A liquid suction pipe (402) is fixedly provided at the bottom of the other side of the desulfurization tower (201), and one end of the liquid suction pipe (402) is fixedly connected to the water inlet end of the boosting pump (403).

4. The automatic water-changing pre-wash tower device for biogas desulfurization according to claim 3 is characterized in that: A liquid outlet pipe (404) is fixedly provided at the water outlet end of the booster pump (403), and a circulation nozzle (405) is fixedly provided at one end of the liquid outlet pipe (404).

5. The automatic water-changing pre-wash tower device for biogas desulfurization according to claim 4 is characterized in that: A circulation nozzle (406) is fixedly provided at the bottom of the circulation nozzle (405).

6. The automatic water-changing pre-wash tower device for biogas desulfurization according to claim 1, characterized in that: A drain pipe (407) is fixedly provided at the bottom of the front side of the desulfurization tower (201), and a valve (408) is provided inside the drain pipe (407).

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