CN219764936U - An industrial waste gas spray absorption tower - Google Patents

Abstract

The utility model discloses an industrial waste gas spray absorption tower, which relates to the technical field of waste gas treatment. The utility model includes a spray tower, a draft hood and a spray frame. A draft hood is provided on the inside of the spray tower. A ventilation pipe is welded through the bottom of the draft hood. An exhaust fan is snap-fastened at the bottom of the ventilation pipe. A spray rack is plugged in, a water tank is provided at the bottom of the spray rack, a water pump is connected to one end of the water tank, and a water pipe is connected to the top of the outer peripheral surface of the water pump. By arranging a spray tower, a draft hood and a spray frame, the utility model solves the problem that when the spray absorption tower processes a large amount of waste gas, in order to ensure the residence time of the waste gas in the tower, a larger tower body is usually required. , Reduce space utilization. Due to the fast flow rate of exhaust gas, it is difficult for the treatment liquid sprayed by one spray device to contact the exhaust gas over a large area. Multiple spray devices need to be installed, which increases costs and maintenance expenses.

Description

An industrial waste gas spray absorption tower

Technical field

The utility model belongs to the technical field of waste gas treatment, and particularly relates to an industrial waste gas spray absorption tower.

Background technique

Industrial waste gas refers to the general term for various pollutant-containing gases emitted into the air during the combustion of fuels and production processes in an enterprise's factory. It mainly includes carbon dioxide, carbon disulfide, hydrogen sulfide, nitrogen oxides, carbon monoxide, lead and mercury sulfate, Smoke, dust, etc. If these waste gases are not treated, they will cause great pollution to the environment and affect the health of organisms and humans. Therefore, industrial waste gases usually need to be treated before being discharged to the environment. In various industrial waste gas treatment devices , the spray absorption tower is widely used. The spray tower is an environmentally friendly waste gas treatment equipment. According to its working principle, it can be divided into circulating water spray tower, alkali spray tower and acid spray tower. It passes The spray medium contacts the exhaust gas over a large area, wrapping or reacting with the pollutants in the exhaust gas, so that the pollutants and the medium fall to the bottom of the spray tower under the action of gravity. It has the advantages of simple process, convenient installation, good purification effect, and easy maintenance. It's a bit of a wait, but it still has the following disadvantages in actual use:

The utility model with the publication number CN113332833A discloses a circulating spray exhaust gas absorption tower. An absorption cavity is formed inside the tower body. The tower body is provided with an air inlet, an air outlet and a liquid discharge port connected to the absorption cavity; the baffle is built into the absorption cavity. The cavity and the inner wall of the absorption cavity form an interval for the circulation of waste gas; the main spray device includes a main spray head arranged on the top of the absorption cavity and a liquid inlet pipe connected to the main spray head. The treatment liquid in the liquid inlet pipe can be sprayed from the main spray head into In the absorption chamber; the secondary spray device includes a liquid suction pipe, a liquid pump and a secondary nozzle. The liquid inlet end of the liquid suction pipe is set on the baffle, and its liquid outlet is connected to the secondary nozzle. The liquid pump is set on the liquid suction pipe. Spray-type waste gas absorption towers usually use baffles to extend the residence time of waste gas in the tower body to ensure full contact between waste gas and treatment liquid and ensure the waste gas treatment effect. However, in actual use, industrial production usually produces more waste gas. , a large amount of waste gas will cause the waste gas to move faster in the absorption tower. Even if it passes through multiple baffles, it is difficult to extend the residence time of the large amount of waste gas in the tower. In order to ensure the efficiency of waste gas treatment, factories usually use larger absorption towers to ensure The treatment effect of waste gas increases production expenses and reduces space utilization;

When the industrial waste gas spray absorption tower absorbs waste gas, due to the fast flow rate of the waste gas, the treatment liquid sprayed by one spray device is usually difficult to contact with the waste gas over a large area, and multiple spray devices or nozzles need to be installed for spraying. This results in a more complex structure of the absorption tower, which increases costs and maintenance expenses.

Utility model content

The purpose of this utility model is to provide an industrial waste gas spray absorption tower. Through the spray tower, the draft hood and the spray frame, the spray absorption tower solves the problem of ensuring the exhaust gas in the tower when processing a large amount of waste gas. Retention time usually requires a larger tower to reduce space utilization. Due to the fast flow rate of exhaust gas, it is difficult for the treatment liquid sprayed by one spray device to contact the exhaust gas over a large area. Multiple spray devices need to be installed to increase the retention time. Issues of cost and maintenance expenditure.

In order to solve the above technical problems, the present utility model is realized through the following technical solutions:

The utility model is an industrial waste gas spray absorption tower, which includes a spray tower, a draft hood and a spray frame. A draft hood is provided inside the spray tower, and a ventilation pipe is welded through the bottom of the draft hood. An air inlet pipe is welded through the outer circumference of the ventilation pipe, and an exhaust fan is snap-fastened at the bottom of the ventilation pipe. The exhaust fan can draw the exhaust gas generated by industrial production and the exhaust gas after one or more spray treatments through the induced air again. The hood is pumped into the ventilation duct, so that a large amount of exhaust gas can be circulated and processed multiple times through an induced draft hood. There is no need to increase the volume of the spray tower and add multiple baffles to extend the residence time of the exhaust gas in the spray tower, and improve the space. Utilization rate, a spray rack is inserted into the inside of the draft hood, and an exhaust pipe is connected through the center of the upper part of the spray rack. When the exhaust gas enters the draft hood multiple times, it can be discharged through a spray rack. Spray treatment absorbs pollutants in the exhaust gas. When the air pressure inside the spray tower reaches the threshold, the air pressure drives the second one-way valve to open, allowing a small amount of the exhaust gas that has been treated multiple times to be discharged through the exhaust pipe. No need Multiple spray devices are provided to simplify the structure of the absorption tower and reduce costs and maintenance expenses. A water tank is provided at the bottom of the spray frame, a water pump is connected to one end of the water tank, and a water pump is connected to the top of the outer peripheral surface of the water pump. The water pipe, the top of the water pipe and the inside of the spray rack are connected through and through. The treatment liquid in the water tank can be sprayed on the inside of the spray tower through the spray frame through the water pump, so that the treatment liquid and the exhaust gas are fully contacted and the pollutants are absorbed. The sprayed treatment liquid falls to the inside of the water tank under the action of gravity for recycling, improving the utilization rate of the treatment liquid.

Further, a hopper is welded through the bottom of the spray tower, a support frame is welded and fixed around the bottom of the hopper, and a connecting pipe is welded through and in the center of the bottom of the hopper;

The solid particles in the exhaust gas can fall through the hopper to the inside of the waste box of the water tank under the action of gravity, making it easier for staff to process the waste and improving the convenience of cleaning.

Furthermore, a connecting frame is snap-fastened to the top of the outer circumferential surface of the ventilation pipe. The connecting frame is snap-fastened to the inner wall of the spray tower relative to the other side of the ventilation pipe. The first unit is snap-fastened to the outer circumferential surface of the air inlet pipe. To the valve, the air inlet pipe is connected to the outer peripheral surface of the spray tower;

The one-way valve can further prevent the waste gas sucked into the spray tower from flowing back through the air inlet pipe to ensure the treatment effect of the waste gas. There is a certain gap between the draft hood and the inner wall of the spray tower. When the exhaust fan is extracting air, the waste gas passes through The ventilation duct is pumped to the air outlet duct, and under the action of air flow, it enters the draft hood again through the gap between the draft hood and the inner wall of the spray tower, and the exhaust gas is absorbed and processed through the spray rack, so that a large amount of exhaust gas passes through an induction duct. The air hood is circulated multiple times, and there is no need to increase the volume of the spray tower or add multiple baffles to extend the residence time of the waste gas in the spray tower, which improves space utilization.

Further, the bottom of the outer peripheral surface of the exhaust fan is connected with an air outlet pipe, the bottom of the air outlet pipe is inserted into the inside of the hopper, and one end of the exhaust fan is connected with the outer peripheral surface of the spray tower;

The inside of the hopper contains a certain amount of treatment liquid. The waste gas drawn into the air outlet pipe through the exhauster first contacts the treatment liquid in the hopper to process the solid particles in the waste gas, avoid the wear and blockage of the spray frame caused by the solid particles, and can make the waste gas Contact with the treatment liquid again to improve the treatment effect.

Further, a waste slag box is plugged into one end of the water tank, a filter is snap-connected to one side of the waste slag box, a liquid inlet pipe is welded through one end of the top of the water tank, and the waste slag box is located on the other side of the water tank relative to the water pump. At one end, the filter screen is located on the water tank side of the waste box, the connecting pipe is inserted through and inserted into the top of the water tank, and the connecting pipe is located on the upper part of the waste box;

The solid particles entering the waste slag box can be retained through the filter to prevent the solid particles in the waste gas from causing wear on the water pump. A drainage pipe is provided on one side of the water tank, and the drainage pipe is located at the other end of the water tank relative to the waste slag box. After the waste gas treatment is completed , by opening the drain pipe to discharge the waste water, and then opening the waste box to centrally process the solid particles, improving the convenience of use.

Further, the outer peripheral surface of the exhaust pipe is connected with a second one-way valve, the upper part of the exhaust pipe is connected with the top surface of the spray tower, and the water pipe is connected with the outer peripheral surface of the spray tower;

The second one-way valve can prevent the exhaust gas from being discharged through the exhaust pipe without multiple circulation treatments. The treatment liquid sprayed through the spray tower can contact the exhaust gas in the draft hood over a large area, and through the circulation of the exhaust gas, The spray rack can be used to spray exhaust gas multiple times, simplifying the structure of the absorption tower and reducing costs and maintenance expenses.

The utility model has the following beneficial effects:

By arranging a spray tower and a draft hood, the utility model solves the problem that spray-type waste gas absorption towers usually extend the residence time of waste gas in the tower body through baffles to ensure full contact between waste gas and treatment liquid and ensure the waste gas treatment effect. However, In actual use, industrial production usually produces a lot of waste gas. A large amount of waste gas will cause the waste gas to move faster in the absorption tower. Even if it passes through multiple baffles, it is difficult to extend the residence time of a large amount of waste gas in the tower. In order to ensure that the waste gas Treatment efficiency, factories usually use larger absorption towers to ensure the treatment effect of waste gas, which increases production expenses and reduces space utilization. The exhaust fan is used to drive the waste gas through the induced draft hood in the spray tower Circular flow allows the waste gas to be absorbed and processed multiple times when passing through the draft hood multiple times, and the circular flow of air in the spray tower avoids the direct upward flow of waste gas, resulting in a shorter contact time with the spray treatment liquid, which prolongs the The residence time of waste gas in the spray tower is reduced, and there is no need to increase the volume of the absorption tower, improving space utilization.

By arranging a draft hood and a spray frame, the utility model solves the problem that when the industrial waste gas spray absorption tower absorbs waste gas, due to the fast flow rate of the waste gas, the treatment liquid sprayed by a spray device is usually difficult to interact with the waste gas in a large area. Contact, multiple spray devices or nozzles need to be installed for spraying, resulting in a more complex structure of the absorption tower, increasing costs and maintenance expenses. When the exhaust gas circulates through the draft hood, the treatment liquid sprayed by the spray rack It can contact the exhaust gas multiple times to absorb pollutants. It does not need to install multiple spray devices, simplifying the structure of the absorption tower and reducing costs and maintenance expenses.

Description of the drawings

Figure 1 is a schematic structural diagram of the utility model;

Figure 2 is a structural rendering of the utility model;

Figure 3 is a structural diagram of the spray tower of the present utility model;

Figure 4 is a structural diagram of the draft hood of the present utility model;

Figure 5 is a structural diagram of the spray rack of the present utility model;

Figure 6 is a bottom view of the spray rack of the present utility model.

Reference signs:

1. Spray tower; 101. Hopper; 102. Support frame; 103. Connecting pipe; 2. Draft hood; 201. Ventilation pipe; 202. Air inlet pipe; 203. First one-way valve; 204. Exhaust fan; 205 , air outlet pipe; 206, connecting frame; 3, spray frame; 301, water tank; 302, waste box; 303, filter; 304, liquid inlet pipe; 305, water pump; 306, water pipe; 307, exhaust pipe ; 308. Second one-way valve.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

Please refer to Figures 1-6. The utility model is an industrial waste gas spray absorption tower, which includes a spray tower 1, a draft hood 2 and a spray frame 3. A draft hood 2 is provided inside the spray tower 1. A ventilation pipe 201 is welded through the bottom of the draft hood 2, and an air inlet pipe 202 is welded through the outer circumference of the ventilation pipe 201. An exhaust fan 204 is snap-fastened to the bottom of the ventilation pipe 201. The exhaust fan 204 drives the exhaust gas through the air inlet pipe 202 and enters the ventilation pipe 201. Inside, the exhaust gas that has been sprayed once or multiple times in the spray tower 1 enters the draft hood 2 with the air flow, so that the exhaust gas circulates in the spray tower 1 and is sprayed multiple times. The draft hood 2 is plugged into the inner side of the spray rack 3, and the upper center of the spray rack 3 is connected with an exhaust pipe 307. When the exhaust gas enters the draft hood 2 multiple times, it is sprayed through a spray rack 3. The pollutants in the exhaust gas are absorbed, and when the air pressure inside the spray tower 1 reaches the threshold, the air pressure drives the second one-way valve 308 to open, so that a small amount of the exhaust gas treated once or multiple times is discharged through the exhaust pipe 307, and the spray A water tank 301 is provided at the bottom of the frame 3. A water pump 305 is connected to one end of the water tank 301. A water pipe 306 is connected to the top of the outer circumference of the water pump 305. The top of the water pipe 306 is connected to the inside of the spray frame 3. The water tank is connected through the water pump 305. The treatment liquid in 301 is sprayed on the inside of the spray tower 1 through the spray rack 3, so that the treatment liquid and the exhaust gas are fully contacted and the pollutants are absorbed, and the sprayed treatment liquid falls to the inside of the water tank 301 under the action of gravity for recycling. .

As shown in Figure 1-4, a hopper 101 is welded through the bottom of the spray tower 1, a support frame 102 is welded and fixed around the bottom surface of the hopper 101, a connecting pipe 103 is welded through the center of the bottom surface of the hopper 101, and the top of the outer peripheral surface of the ventilation pipe 201 is snap-fitted A connecting frame 206 is fixed, and the connecting frame 206 is clamped and fixed to the inner wall of the spray tower 1 relative to the other side of the ventilation pipe 201. A first one-way valve 203 is clamped through the outer peripheral surface of the air inlet pipe 202, and the air inlet pipe 202 is clamped through and connected to the inner wall of the spray tower 1. On the outer circumference of the spray tower 1, an air outlet pipe 205 is connected to the bottom of the outer circumference of the exhaust fan 204. The bottom of the air outlet pipe 205 is plugged into the inside of the hopper 101. One end of the exhaust fan 204 is connected to the outer circumference of the spray tower 1;

The exhaust fan 204 is used to extract air, driving the waste gas generated by industrial production to enter the ventilation duct 201 through the air inlet pipe 202, driving the waste gas in the spray tower 1 to enter the ventilation duct 201 through the draft hood 2, and causing the air flow to pass through the air outlet pipe 205 is pumped into the treatment liquid in the hopper 101 to retain the solid particles in the waste gas. The waste gas again flows through the gas flow in the spray tower 1 and enters the draft hood 2 for circulation. The solid particles fall through the hopper 101 under the action of gravity. to the inside of the waste box 302 of the water tank 301.

As shown in Figures 1, 2, 5 and 6, one end of the water tank 301 is plugged into a waste slag box 302, one side of the waste slag box 302 is snap-connected with a filter screen 303, and one end of the top of the water tank 301 is welded with a liquid inlet pipe 304. The waste residue box 302 is located at the other end of the water tank 301 relative to the water pump 305. The filter screen 303 is located on the side of the water tank 301 of the waste residue box 302. The connecting pipe 103 is inserted into the top of the water tank 301. The connecting pipe 103 is located at the upper part of the waste residue box 302. The exhaust pipe 307 A second one-way valve 308 is connected to the outer peripheral surface, the upper part of the exhaust pipe 307 is connected to the top surface of the spray tower 1, and the water pipe 306 is connected to the outer peripheral surface of the spray tower 1;

The water pump 305 sucks the treatment liquid in the water tank 301, so that the treatment liquid enters the spray rack 3 through the water pipe 306 and is sprayed in the draft hood 2, spraying the exhaust gas circulating through the draft hood 2 multiple times. During the spraying process, the filter 303 retains the solid particles entering the waste box 302 to prevent the solid particles in the exhaust gas from causing wear on the water pump 305. When the air pressure inside the spray tower 1 reaches the threshold, the air pressure drives the second one-way valve 308 to open. , a small amount of waste gas treated once or multiple times is discharged through the exhaust pipe 307. After the waste gas treatment is completed, the waste water is discharged by opening the drain pipe, and then the waste residue box 302 is opened for centralized treatment of solid particles.

The specific working principle of the utility model is: connect the air inlet pipe 202 and the exhaust gas outlet generated by industrial production, and replenish the treatment liquid in the water tank 301 through the liquid inlet pipe 304 until the treatment liquid overflows the hopper 101 and is located in the exhaust fan 204 On the lower side, the exhaust fan 204 is used to extract air, driving the waste gas generated by industrial production into the ventilation pipe 201 through the air inlet pipe 202, driving the waste gas in the spray tower 1 into the ventilation pipe 201 through the draft hood 2, and the water pump 305 pumps the water tank The treatment liquid in 301 is sucked, so that the treatment liquid enters the spray rack 3 through the water pipe 306 and is sprayed in the draft hood 2. The exhaust gas circulating through the draft hood 2 is sprayed, and the airflow passes through the outlet. The air duct 205 is pumped into the treatment liquid in the hopper 101 to retain the solid particles in the waste gas. The solid particles fall through the hopper 101 to the inside of the waste box 302 of the water tank 301 under the action of gravity. The solid particles are retained to prevent the solid particles in the exhaust gas from causing wear on the water pump 305. The exhaust gas again flows through the gas flow in the spray tower 1 and enters the draft hood 2 for circulation. When the air pressure inside the spray tower 1 reaches the threshold, the air pressure The second one-way valve 308 is driven to open, so that a small amount of waste gas treated once or multiple times is discharged through the exhaust pipe 307. After the waste gas treatment is completed, the waste water is discharged by opening the drain pipe, and then the waste residue box 302 is opened to concentrate the solid particles. deal with.

The above are only preferred embodiments of the present utility model, and do not limit the present utility model. Any modifications to the technical solutions recorded in the foregoing embodiments, equivalent substitutions of some of the technical features, and any modifications, equivalent substitutions, and improvements. , all belong to the protection scope of this utility model.

Claims (6)

1. The utility model provides an industrial waste gas sprays absorption tower, includes spray column (1), induced draft cover (2) and spray frame (3), its characterized in that: the utility model discloses a spray column, including spray column (1), ventilation pipe (201) outer peripheral face run through the welding and have intake pipe (202), ventilation pipe (201) bottom joint is fixed with air exhauster (204), spray frame (3) are pegged graft to the inboard of ventilation pipe (2), spray frame (3) upper portion central authorities run through the joint and have blast pipe (307), spray frame (3) bottom is provided with water tank (301), water tank (301) one end runs through the joint and has water pump (305), the joint has water pipe (306) to run through at water pump (305) outer peripheral face top, water pipe (306) top and spray frame (3) inboard run through the intercommunication.

2. An industrial waste gas spray absorption tower according to claim 1, wherein: the bottom of the spray tower (1) is welded with a hopper (101) in a penetrating mode, a supporting frame (102) is welded and fixed on the periphery of the bottom surface of the hopper (101), and a connecting pipe (103) is welded in the center of the bottom surface of the hopper (101) in a penetrating mode.

3. An industrial waste gas spray absorption tower according to claim 1, wherein: the top clamping connection of the outer peripheral surface of the ventilation pipe (201) is fixedly provided with a connecting frame (206), the connecting frame (206) is fixedly connected to the inner wall of the spray tower (1) relative to the other side clamping connection of the ventilation pipe (201), the outer peripheral surface of the air inlet pipe (202) is penetrated and clamped with a first one-way valve (203), and the air inlet pipe (202) is penetrated and clamped to the outer peripheral surface of the spray tower (1).

4. An industrial waste gas spray absorption tower according to claim 2, wherein: the bottom of the outer peripheral surface of the exhaust fan (204) is penetrated and clamped with an air outlet pipe (205), the bottom of the air outlet pipe (205) is inserted into the inner side of the hopper (101), and one end of the exhaust fan (204) is penetrated and clamped with the outer peripheral surface of the spray tower (1).

5. An industrial waste gas spray absorption tower according to claim 2, wherein: the waste residue box (302) has been pegged graft to water tank (301) one end, waste residue box (302) one side joint runs through the joint has filter screen (303), the welding has feed liquor pipe (304) to run through to water tank (301) top one end, waste residue box (302) are located water tank (301) for water pump (305) other end, filter screen (303) are located water tank (301) one side of waste residue box (302), connecting pipe (103) run through and peg graft in water tank (301) top, connecting pipe (103) are located waste residue box (302) upper portion.

6. An industrial waste gas spray absorption tower according to claim 1, wherein: the outer peripheral surface of the exhaust pipe (307) is penetrated and clamped with a second one-way valve (308), the upper part of the exhaust pipe (307) is penetrated and inserted into the top surface of the spray tower (1), and the water pipe (306) is penetrated and clamped with the outer peripheral surface of the spray tower (1).