Chemical waste gas spray washing tower

Abstract

The utility model relates to a washing tower, in particular to a chemical waste gas spray washing tower. The chemical waste gas spray washing tower comprises a tower body, a sealing cover, a dosing cylinder, a dosing pipe, a main pipe, a branch pipe, a water pump and the like, a plurality of waste gas inlets are formed in the front end of the tower body and used for being externally connected with waste gas inlet pipes, a sealing cover is arranged in each waste gas inlet, a circulating water tank is arranged on the right side of the tower body, a dosing cylinder and a water pump are arranged on the top of the circulating water tank, a dosing pipe is arranged at the bottom of the dosing cylinder, a water suction pipe is connected to the water suction end of the water pump, and the dosing pipe and the water suction pipe both penetrate through the circulating water tank. The drainage end of the water pump is connected with a trunk pipe. The PH sensor, the processor and the electric control valve are matched, the PH sensor can detect the PH value of a detergent in the circulating water tank in real time, and the processor controls the electric control valve to supplement chemicals according to signals fed back by the PH sensor, so that the adding amount of the chemicals is accurately controlled, and some problems caused by excessive or insufficient chemicals are avoided.

Description

Technical Field

[0001] The utility model relates to a washing tower, in particular to a chemical waste gas spray washing tower. Background Art

[0002] The scrubbing tower is a new type of gas purification equipment, which is improved on the basis of the floating packing layer gas purifier. It is widely used in pre-treatment of industrial waste gas purification, dust removal, etc., and has a good purification effect, so it is widely used. For example, for the treatment of some chemical waste gas, when treating chemical waste gas, it is necessary to spray and flush the waste gas sent into the tower, so a spray device is needed.

[0003] During the washing process of the washing tower, the moisture contained in the exhaust gas will dilute the washing liquid, and the exhaust gas will react chemically with the washing liquid, consuming the chemicals in the washing liquid and reducing the concentration of the detergent. Some traditional chemical waste gas washing towers usually rely on manual timed monitoring and manual addition of chemicals to increase the concentration of the washing liquid. Operational errors or inaccurate readings are prone to occur during manual detection, resulting in unreliable test results. If excessive amounts of chemicals are added, it will cause waste of chemicals and increase operating costs. If too little chemicals are added, the exhaust gas treatment effect will be poor. Utility Model Content

[0004] In order to overcome the shortcomings of traditional chemical waste gas washing towers that rely on manual monitoring and manual addition of reagents, which are prone to detection errors leading to waste of reagents, or insufficient addition of reagents leading to poor treatment effects, the utility model can provide a chemical waste gas spray washing tower.

[0005] The technical implementation scheme of the utility model is: a chemical waste gas spray washing tower, including a tower body, a sealing cover, a dosing cartridge, a dosing pipe, a main pipe, a branch pipe, a water pump, a water suction pipe, a circulating water tank, a spray head and an automatic feeding mechanism, a plurality of waste gas inlets are opened at the front end of the tower body, the waste gas inlet is used to connect the waste gas intake pipe, each waste gas inlet is provided with a sealing cover, a circulating water tank is arranged on the right side of the tower body, a dosing cartridge and a water pump are arranged on the top of the circulating water tank, a dosing pipe is arranged at the bottom of the dosing cartridge, a water suction pipe is connected to the water suction end of the water pump, the dosing pipe and the water suction pipe both pass through the circulating water tank, a main pipe is connected to the drainage end of the water pump, two branch pipes are connected to the main pipe, the branch pipes are located directly above the waste gas inlet, and each branch pipe is connected to a plurality of spray heads through a connecting pipe, an exhaust port is opened at the top of the tower body, and a through hole connected to the circulating water tank is opened at the bottom of the right side of the tower body.

[0006] Optionally, the automatic feeding mechanism includes a PH sensor, a processor and an electronically controlled valve. The processor is arranged at the top of the circulating water tank, the PH sensor is connected to the bottom of the processor, and the PH sensor is located inside the circulating water tank. The electronically controlled valve is sleeved on the outside of the dosing pipe, and the PH sensor and the electronically controlled valve are both electrically connected to the processor.

[0007] Optionally, a filter screen is further included, and the filter screen is arranged in the through hole on the right side of the tower body.

[0008] Optionally, an agitator is also included. The circulating water tank is provided with the agitator, and the agitator is electrically connected to the processor.

[0009] Optionally, a packing layer is also included, and the packing layer is arranged in the tower body.

[0010] Optionally, a drain valve is also included, and a drain valve is provided at the bottom of the right side of the circulating water tank.

[0011] Optionally, a fan is also included. The top of the tower body is provided with the fan, and the fan is located directly below the exhaust port.

[0012] The utility model has the following advantages: 1. Through the cooperation of a PH sensor, a processor and an electric control valve, the PH sensor can detect the pH value of the detergent in the circulating water tank in real time, and the processor controls the electric control valve to replenish the agent according to the signal fed back by the PH sensor, thereby accurately controlling the amount of agent added to avoid some problems caused by excess or deficiency.

[0013] 2. The design of the agitator of the utility model accelerates the mixing speed of the agent and the washing liquid, ensures that the newly added agent can be quickly and evenly distributed in the washing liquid, and improves the utilization rate of the agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the circulating water tank, agitator and pH sensor of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the packing layer and the main pipe of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the fan and the sprinkler head of the utility model.

[0018] The meanings of the reference numerals in the figure are as follows: 1: tower body, 2: sealing cover, 3: exhaust port, 4: dosing cartridge, 41: dosing pipe, 5: main pipe, 51: branch pipe, 6: water pump, 61: water suction pipe, 7: circulating water tank, 8: PH sensor, 9: processor, 10: electric control valve, 11: agitator, 12: filter screen, 13: packing layer, 14: spray head, 15: fan, 16: drain valve. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0020] A chemical waste gas spray washing tower, such as Figure 1-Figure 4 As shown, it includes a tower body 1, a sealing cover 2, a dosing cartridge 4, a dosing pipe 41, a main pipe 5, a branch pipe 51, a water pump 6, a water suction pipe 61, a circulating water tank 7, a sprinkler head 14 and an automatic feeding mechanism. The front end of the tower body 1 is provided with multiple exhaust gas inlets, and there are three exhaust gas inlets that are evenly distributed from top to bottom at the front end of the tower body 1. The exhaust gas inlet is used to connect to an exhaust gas intake pipe. Each exhaust gas inlet is provided with a sealing cover 2. A circulating water tank 7 is provided on the right side of the tower body 1. The dosing cartridge 4 and the water pump 6 are both provided on the top of the circulating water tank 7. A dosing pipe 41 is provided at the bottom of the dosing cartridge 4. The water suction pipe 61 is connected to the water pump 6, the water suction end of the water pump 6 is located at the bottom of the water pump 6, the dosing pipe 41 and the water suction pipe 61 both pass through the circulating water tank 7, the discharge end of the water pump 6 is connected to the main pipe 5, the discharge end of the water pump 6 is located at the front end of the water pump 6, the main pipe 5 is connected to two branch pipes 51, the branch pipes 51 are located just above the exhaust gas inlet, and each branch pipe 51 is connected to a plurality of spray heads 14 through a connecting pipe, there are three connecting pipes, and the spray heads 14 are arranged on the front and rear sides of the bottom of the connecting pipe, an exhaust port 3 is opened at the top of the tower body 1, and a through hole connected to the circulating water tank 7 is opened at the bottom of the right side of the tower body 1.

[0021] like Figure 2 As shown, the automatic feeding mechanism includes a pH sensor 8, a processor 9 and an electric control valve 10. The processor 9 is arranged on the top of the circulating water tank 7, the pH sensor 8 is connected to the bottom of the processor 9, and the pH sensor 8 is located inside the circulating water tank 7. The electric control valve 10 is sleeved on the outside of the dosing pipe 41, and the pH sensor 8 and the electric control valve 10 are both electrically connected to the processor 9.

[0022] like Figure 2 As shown, a filter screen 12 is also included. The filter screen 12 is arranged in the through hole on the right side of the tower body 1. The filter screen 12 can prevent pollutants dissolved into solids from entering the water pump 6, thereby protecting the water pump 6 from being blocked.

[0023] like Figure 2 As shown, an agitator 11 is also included. The circulating water tank 7 is provided with the agitator 11 inside. The agitator 11 is electrically connected to the processor 9.

[0024] like Figure 3 As shown, a packing layer 13 is also included. The packing layer 13 is arranged inside the tower body 1.

[0025] like Figure 1As shown, a drain valve 16 is also included. The right bottom of the circulating water tank 7 is provided with a drain valve 16, and the drain valve 16 is used to discharge the liquid in the circulating water tank 7.

[0026] like Figure 4 As shown, a fan 15 is also included. The fan 15 is arranged on the top of the tower body 1 and is located directly below the exhaust port 3. The fan 15 blows air downward to slow down the flow of the exhaust gas and increase the contact time between the exhaust gas and the washing liquid, thereby improving the exhaust gas treatment efficiency.

[0027] After water and chemicals are mixed together in a predetermined ratio, the electric control valve 10 is opened, and the mixed detergent is poured into the circulating water tank 7 through the dosing cartridge 4. The detergent in the circulating water tank 7 flows to the bottom of the tower body 1 through the through hole. The electric control valve 10 is closed, and chemicals are added to the dosing cartridge 4. Finally, the water pump 6 is started, the cover 2 located under the tower body 1 is opened, and the exhaust gas inlet pipe is connected to the exhaust gas inlet. The water pump 6 can input the detergent into the main pipe 5 through the suction pipe 61, and then input the detergent into the spray head 14 on the branch pipe 51 through the branch pipe 51 on the main pipe 5. The spray head 14 evenly sprays the detergent to the bottom of the tower body 1, so that the pollutants in the exhaust gas entering the tower body 1 are in contact with the chemical substances in the washing liquid. The washing liquid can dissolve the pollutants in the exhaust gas, or react chemically with the pollutants in the exhaust gas to remove the pollutants in the exhaust gas. Because the tower body 1 is connected to the circulating water tank 7, the washing liquid falling on the bottom of the tower body 1 will pass through the filter 12 and lead to the circulating water tank 7. The filter 12 can prevent the pollutants dissolved into solids from entering the water pump 6, thereby protecting the water pump 6 from being blocked. The exhaust gas treatment process is often long and long. The reagents in the washing liquid are often consumed when removing the pollutants in the exhaust gas, resulting in a decrease in the concentration of the detergent in the circulating water tank 7, and it is impossible to effectively neutralize or dissolve the pollutants in the subsequent exhaust gas, resulting in poor treatment effect of the detergent on the exhaust gas. Therefore, an automatic feeder can be set in the circulating water tank 7. The pH sensor 8 can detect the pH value of the detergent in the circulating water tank 7. The staff can monitor the pH value change of the detergent or preset the pH value to trigger a signal to the processor 9 to evaluate the effect of the detergent. If the pH value of the detergent deviates from the ideal range, the processor 9 controls the electric control valve 10 to supplement the agent and increase the concentration of the detergent to better remove the pollutants in the exhaust gas. Most of the pollutants in the treated exhaust gas have been removed and are finally discharged from the exhaust port 3 at the top of the tower body 1. When adding the agent to the circulating water tank 7 midway, the mixing speed of the detergent and the agent is slow, so a stirrer 11 can be set in the circulating water tank 7 and the stirrer 11 is electrically connected to the processor 9. After the electric control valve 10 is opened by the processor 9, the stirrer 11 is started at the same time to quickly mix the agent and the detergent to improve the utilization rate of the agent. In order to improve the removal efficiency of pollutants in the exhaust gas, a packing layer 13 can also be set in the tower body 1, and some adsorption balls are placed in the packing layer 13 to adsorb dust and particulate matter in the pollutants.

[0028] Although the utility model is described in detail with reference to the above embodiments, it is obvious to those skilled in the art through this disclosure that various changes or modifications can be made to the utility model without departing from the principle and spirit of the utility model defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, not to limit the utility model, but the scope of protection is limited by the content of the claims.

Claims

1. A chemical waste gas spray washing tower, characterized in that: The tower body (1) comprises a tower body (1), a sealing cover (2), a dosing cartridge (4), a dosing pipe (41), a main pipe (5), a branch pipe (51), a water pump (6), a water suction pipe (61), a circulating water tank (7), a spray head (14) and an automatic dosing mechanism. The tower body (1) is provided with a plurality of waste gas inlets at the front end thereof. The waste gas inlets are used to be connected to an external waste gas intake pipe. A sealing cover (2) is provided in each waste gas inlet. A circulating water tank (7) is provided on the right side of the tower body (1). The dosing cartridge (4) and the water pump (6) are both provided on the top of the circulating water tank (7). A dosing cartridge (4) is provided at the bottom thereof. The medicine pipe (41) and the water suction pipe (61) are connected to the water suction end of the water pump (6). The medicine adding pipe (41) and the water suction pipe (61) both penetrate the circulating water tank (7). The discharge end of the water pump (6) is connected to a main pipe (5). Two branch pipes (51) are connected to the main pipe (5). The branch pipes (51) are located directly above the exhaust gas inlet, and each branch pipe (51) is connected to a plurality of spray heads (14) via a connecting pipe. An exhaust port (3) is provided at the top of the tower body (1), and a through hole communicating with the circulating water tank (7) is provided at the bottom of the right side of the tower body (1).

2. A chemical waste gas spray scrubbing tower according to claim 1, characterized in that: The invention also comprises an automatic feeding mechanism comprising a pH sensor (8), a processor (9) and an electric control valve (10), wherein the processor (9) is arranged on the top of the circulating water tank (7), the pH sensor (8) is connected to the bottom of the processor (9), and the pH sensor (8) is located inside the circulating water tank (7), the electric control valve (10) is sleeved on the outside of the dosing pipe (41), and the pH sensor (8) and the electric control valve (10) are both electrically connected to the processor (9).

3. A chemical waste gas spray scrubbing tower according to claim 2, characterized in that: It also includes a filter screen (12), which is arranged in a through hole on the right side of the tower body (1).

4. A chemical waste gas spray scrubbing tower according to claim 3, characterized in that: It also includes a stirrer (11). The stirrer (11) is arranged inside the circulating water tank (7), and the stirrer (11) is electrically connected to the processor (9).

5. A chemical waste gas spray scrubbing tower according to claim 4, characterized in that: It also includes a packing layer (13), and the packing layer (13) is arranged inside the tower body (1).

6. A chemical waste gas spray scrubbing tower according to claim 5, characterized in that: It also includes a drain valve (16), and the drain valve (16) is provided at the bottom of the right side of the circulating water tank (7).

7. A chemical waste gas spray scrubbing tower according to claim 6, characterized in that: It also includes a fan (15), which is arranged on the top of the tower body (1) and is located directly below the exhaust port (3).

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