Spray washing tower for waste gas treatment

Abstract

The utility model discloses a spray washing tower for waste gas treatment, which is characterized in that mounting plates which are arranged in a staggered manner and have a certain inclination angle are arranged in the washing tower, atomizing nozzles are distributed on the lower sides of the mounting plates, a water inlet pump is arranged on one side of the washing tower, and a water inlet pipe is arranged at the output end of the water inlet pump; a water washing box is arranged on one side of the washing tower, an air guide pipe is arranged at the top of the washing tower, the other end of the air guide pipe penetrates through the top of the water washing box and extends into the water washing box, and vent holes are distributed in the surface side of the part, located in the water washing box, of the air guide pipe. Through the mounting plates which are arranged in a staggered manner, the entered waste gas only can float upwards through the gaps between the mounting plates and the inner wall of the washing tower, so that the length of the travel path of the waste gas in the washing tower is increased, the duration of the waste gas staying in the washing tower is further shortened on the basis of the filler layer, and the waste gas spraying duration is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment spray washing tower. Background Art

[0002] Volatile organic compounds (VOCs) in waste gas are a general term for a class of organic compounds. These organic compounds have a high evaporation rate at room temperature, are extremely volatile, and have certain toxicity and irritation. Direct discharge of waste gas containing VOCs into the atmosphere will have a bad impact on the environment and seriously threaten people's health. Therefore, it needs to be purified before it can be discharged.

[0003] The patent with authorization announcement number: CN212632234U discloses a spray washing tower for treating volatile organic compounds in exhaust gas, involving a treatment unit, wherein the treatment unit includes a spray device and a packing layer, wherein the spray device is located above the exhaust gas inlet in the vertical direction; the spray device is connected to the water collecting tank through a circulation pipe, and a circulation water pump is provided on the circulation pipe; the packing layer is located below the spray device; a defogger, wherein the defogger is located above the treatment unit, and the defogger includes a plurality of baffles, a gas channel is formed between each adjacent two baffles, and liquid collecting troughs are provided on the side walls of the baffles on both sides of the bottom end opening of each gas channel, and a drainage pipe is provided in communication with the liquid collecting trough.

[0004] In the above technical solution, the packing layer is set to reduce the flow rate of gas through the washing tower. However, the packing layer has limited effect on reducing the gas flow rate, so that the exhaust gas stays in the tower for a short time and some exhaust gas may float vertically upward without being sprayed, resulting in limited spraying effect. Utility Model Content

[0005] The utility model aims to provide a waste gas treatment spray washing tower to solve the problems of the waste gas treatment spray washing tower proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a waste gas treatment spray washing tower, wherein mounting plates arranged in a staggered manner and having a certain inclination angle are arranged in the washing tower, an atomizing nozzle is arranged on the lower side of the mounting plate, a water inlet pump is installed on one side of the washing tower, a water inlet pipe is installed on the output end of the water inlet pump, and the water inlet pipe is connected to the atomizing nozzles on the lower side of each mounting plate, a water washing box is installed on one side of the washing tower, an air duct is installed on the top of the washing tower, the other end of the air duct passes through the top of the water washing box and extends to the inside of the water washing box, and an air vent is arranged on the surface of the air duct located inside the water washing box.

[0007] As a further preferred embodiment of the present technical solution, a water collecting trough is provided on the upper side of the mounting plate, and a packing layer is installed in the washing tower between the mounting plates.

[0008] As a further preferred embodiment of the present technical solution, one side of the bottom of the washing tower is connected to a water pump through a pipeline, the output end of the water pump is connected to a water pipe through a flange, and the other end of the water pipe is installed above one side of the washing tank.

[0009] As a further preferred embodiment of the present technical solution, a drain pipe is installed at the bottom of the water washing box, and a control valve is provided on the drain pipe.

[0010] As a further preferred embodiment of the present technical solution, an air inlet pipe is installed on one side of the bottom of the washing tower, and an exhaust pipe is installed on the top of the washing box.

[0011] The utility model provides a waste gas treatment spray washing tower, which has the following beneficial effects:

[0012] (1) The utility model can prevent the exhaust gas from being discharged upward directly after entering the washing tower by means of the staggered mounting plates, so that the exhaust gas entering the washing tower can only float upward through the gap between the mounting plates and the inner wall of the washing tower, thereby increasing the length of the exhaust gas path in the washing tower, and further reducing the time the exhaust gas stays in the washing tower on the basis of reducing the flow rate of the packing layer, thereby increasing the time the atomizing nozzle sprays the exhaust gas.

[0013] (2) The utility model provides a water washing box, which can allow the waste gas after washing in the washing tower and the water mist in the washing tower to enter the water washing box through the air duct, so that the harmful gases and water mist in the waste gas that have not been washed can be dissolved in the solvent in the water washing box, making the waste gas washing more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the waste gas treatment spray washing tower of the utility model;

[0015] Figure 2 It is a partial cross-sectional structural schematic diagram of a washing tower in the waste gas treatment spray washing tower of the utility model;

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of a water washing box in the waste gas treatment spray washing tower of the utility model;

[0017] In the figure: 1. washing tower; 2. water pump; 3. water washing box; 4. exhaust pipe; 5. air pipe; 6. water inlet pipe; 7. water pipe; 8. water inlet pump; 9. air inlet pipe; 10. atomizing nozzle; 11. mounting plate; 12. water collecting tank; 13. packing layer; 14. vent; 15. control valve; 16. drain pipe. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] The utility model provides a technical solution: a waste gas treatment spray washing tower, in this embodiment, such as Figure 1-3 As shown, the washing tower 1 is provided with mounting plates 11 arranged in a staggered manner and having a certain inclination angle. The mounting plates 11 arranged in a staggered manner can prevent the exhaust gas from being discharged directly upward after entering, so that the exhaust gas entering can only float upward through the gap between the mounting plates 11 and the inner wall of the washing tower 1, thereby increasing the length of the exhaust gas path in the washing tower 1. An atomizing nozzle 10 is arranged on the lower side of the mounting plate 11, and a water inlet pump 8 is installed on one side of the washing tower 1. A water inlet pipe 6 is installed at the output end of the water inlet pump 8. The water inlet pipe 6 is connected to the atomizing nozzle 10 on the lower side of each mounting plate 11. When the water inlet pump 8 is working, the external solvent is discharged from the atomizing nozzle through the water inlet pipe 6. 10 is sprayed to spray the gas circulating in the washing tower 1. A water washing box 3 is installed on one side of the washing tower 1. An air duct 5 is installed on the top of the washing tower 1. The other end of the air duct 5 passes through the top of the water washing box 3 and extends to the inside of the water washing box 3. The air duct 5 is located inside the water washing box 3. The surface side of the part of the air duct 5 is provided with an air vent 14. When the exhaust gas washed by the washing tower 1 and the water mist from the atomizing nozzle 10 float upward, they will pass through the air duct 5 into the water washing box 3, wherein the water mist will dissolve in the solvent inside the water washing box 3, and the exhaust gas will be completely in contact with the solvent in the water washing box 3 through the air vent 14, and further dissolve the harmful substances in the exhaust gas.

[0020] like Figure 2 As shown, a water collecting tank 12 is provided on the upper side of the mounting plate 11. Through the setting of the water collecting tank 12, the solvent sprayed from the atomizing nozzle 10 can fall into the water collecting tank 12. After spraying for a period of time, the solvent in the water collecting tank 12 is full and overflows from one inclined end to form a water curtain to a certain extent. The formed water curtain can further reduce the speed of the exhaust gas passing through the washing tower 1, and the surface of the solvent collected in the water collecting tank 12 can contact with the exhaust gas passing above, so that part of the organic matter in the exhaust gas can be dissolved in the solvent collected in the water collecting tank 12, thereby increasing the effect of exhaust gas treatment.

[0021] like Figure 2 As shown, a packing layer 13 is installed in the washing tower 1 between the mounting plates 11 , and the time for the exhaust gas to pass through the washing tower 1 can be reduced by the arrangement of the packing layer 13 .

[0022] like Figure 1-3As shown, one side of the bottom of the washing tower 1 is connected to a water pump 2 through a pipeline, and the output end of the water pump 2 is connected to a water pipe 7 through a flange, and the other end of the water pipe 7 is installed above one side of the water washing box 3. Through the setting of the water pump 2, the solvent that falls into the bottom of the washing tower 1 after spraying can enter the water washing box 3 through the water pipe 7, thereby realizing the function of collecting and utilizing the solvent after spraying.

[0023] like Figure 1 and Figure 3 As shown, a drain pipe 16 is installed at the bottom of the water washing box 3, and a control valve 15 is arranged on the drain pipe 16. Through the setting of the control valve 15, when the solvent inside the water washing box 3 needs to be replaced, the control valve 15 can be opened to allow the solvent in the water washing box 3 to be discharged through the drain pipe 16.

[0024] like Figure 1 and Figure 2 As shown, an air inlet pipe 9 is installed on one side of the bottom of the washing tower 1, and an exhaust pipe 4 is installed on the top of the water washing box 3. During operation, the air inlet pipe 9 introduces the exhaust gas into the washing tower 1 through an external air pump. After the exhaust gas is treated, it can be discharged through the exhaust pipe 4 to realize gas circulation.

[0025] The utility model provides a waste gas treatment spray washing tower, and the specific working principle is as follows: during specific operation, the air inlet pipe 9 guides the waste gas into the interior of the washing tower 1 through an external air pump, and the installation plates 11 are arranged in a staggered manner to prevent the waste gas from being discharged directly upward after entering, so that the waste gas entering can only float upward through the gap between the installation plate 11 and the inner wall of the washing tower 1, thereby increasing the length of the waste gas path in the washing tower 1, thereby increasing the waste gas spraying time, and making the waste gas spray washing more thorough. When the waste gas washed by the washing tower 1 and the water mist from the atomizing nozzle 10 float upward, they will pass through the air guide pipe 5 and enter the interior of the water washing box 3, wherein the water mist will dissolve in the solvent inside the water washing box 3, and the waste gas will be completely in contact with the solvent in the water washing box 3 through the air vent 14, further dissolving the harmful substances in the waste gas, and finally the treated gas will be discharged through the exhaust pipe 4.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste gas treatment spray scrubber, comprising a scrubber (1), characterized in that: The washing tower (1) is provided with mounting plates (11) arranged in a staggered manner and having a certain inclination angle, and an atomizing nozzle (10) is arranged on the lower side of the mounting plate (11). A water inlet pump (8) is arranged on one side of the washing tower (1), and a water inlet pipe (6) is arranged on the output end of the water inlet pump (8), and the water inlet pipe (6) is connected to the atomizing nozzle (10) on the lower side of each mounting plate (11). A water washing box (3) is arranged on one side of the washing tower (1), and an air guide pipe (5) is arranged on the top of the washing tower (1), and the other end of the air guide pipe (5) passes through the top of the water washing box (3) and extends to the inside of the water washing box (3), and a vent hole (14) is arranged on the surface of the part of the air guide pipe (5) located inside the water washing box (3).

2. The waste gas treatment spray scrubber according to claim 1, characterized in that: A water collecting trough (12) is provided on the upper side of the mounting plate (11), and a packing layer (13) is installed in the washing tower (1) between the mounting plates (11).

3. The waste gas treatment spray scrubber according to claim 1, characterized in that: One side of the bottom of the washing tower (1) is connected to a water pump (2) via a pipeline, the output end of the water pump (2) is connected to a water pipe (7) via a flange, and the other end of the water pipe (7) is installed above one side of the washing box (3).

4. The waste gas treatment spray scrubber according to claim 1, characterized in that: A drainage pipe (16) is installed at the bottom of the water washing box (3), and a control valve (15) is arranged on the drainage pipe (16).

5. The waste gas treatment spray scrubber according to claim 1, characterized in that: An air inlet pipe (9) is installed on one side of the bottom of the washing tower (1), and an exhaust pipe (4) is installed on the top of the washing box (3).

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