WO2022267090A1

WO2022267090A1 - Exhaust gas treatment apparatus

Info

Publication number: WO2022267090A1
Application number: PCT/CN2021/103657
Authority: WO
Inventors: 许开华; 魏琼; 却运新; 唐兴邦; 徐志国; 李佳佳
Original assignee: 格林美股份有限公司; 常州永邦干燥机械有限公司
Priority date: 2021-06-25
Filing date: 2021-06-30
Publication date: 2022-12-29
Also published as: CN113413748A

Abstract

An exhaust gas treatment apparatus, comprising a condensing unit (1) for cooling exhaust gas, a gas-liquid mixing unit (2) for mixing the exhaust gas with a purifying liquid to form a turbulent flow state, and a separation unit (3) for separating the exhaust gas from the purifying liquid. The gas-liquid mixing unit (2) is communicated with the condensing unit (1) and the separation unit (3), respectively; the condensing unit (1) is communicated with the lower end of the separation unit (3) by means of a first liquid extraction assembly (4), so that the purifying liquid forms a circulation path among the condensing unit (1), the gas-liquid mixing unit (2), and the separation unit (3). The apparatus solves the problems that when existing washing apparatuses perform purification treatment on waste gas, a new purifying liquid needs to be continuously supplemented, and if a duration when the waste gas is in contact with the purifying liquid is short and the contact area is small, the low purification efficiency and high production costs are easily caused.

Description

A waste gas treatment device

technical field

The invention relates to the technical field of exhaust gas treatment, in particular to an exhaust gas treatment device.

Background technique

Exhaust gas purification mainly refers to the treatment of industrial waste gas such as dust particles, flue gas, odorous gas, and toxic and harmful gases generated in industrial places. Common exhaust gas purification includes factory smoke and dust exhaust gas purification, workshop dust exhaust gas purification, organic waste gas purification, Exhaust gas odor purification, acid-base exhaust gas purification, chemical waste gas purification, etc., exhaust gas purification requires the use of exhaust gas purification devices, and adsorption devices are installed in the exhaust gas purification devices.

The emission of waste gas will cause air pollution, endanger the health of residents in the environment, corrode construction, and even cause losses in production and life. At present, people urgently need to take effective measures to control the emission of waste gas to curb the development of the deterioration of the atmospheric environment.

According to the patent document of the prior art patent application number 201410495026.8, the condenser has an exhaust gas inlet, a cooling water inlet located above the exhaust gas inlet, a washing water outlet located below the exhaust gas inlet, and an air outlet located above the cooling water inlet; The upper port of the Venturi is the air inlet. The lower port of the Venturi is the outlet, and the inlet of the Venturi is connected to the gas outlet of the condenser; the water inlet pipe is tangentially connected to the upper part of the Venturi so that the washing water enters the upper part of the Venturi tangentially. The separator is provided with a feed port, a liquid discharge port and an exhaust port. The connecting elbow is connected to the lower port of the Venturi, and the connecting elbow is connected tangentially at the feed inlet of the separator. The exhaust gas enters the condenser through the exhaust gas inlet. Due to the fast flow of the exhaust gas, the exhaust gas cannot be buffered and slowed down during the spray washing process, which will cause the exhaust gas to contact the purification liquid for a short time during spraying. And the contact area is small, and the exhaust gas cannot be effectively purified. At the same time, in the above-mentioned technical means, fresh purification liquid must be constantly replenished, resulting in a large consumption of purification liquid and increased production costs.

Contents of the invention

In view of this, it is necessary to provide a waste gas treatment device to solve the problem that when the existing washing device purifies the acid-containing waste gas, it needs to continuously replenish new purification liquid. If the contact time between the waste gas and the purification liquid is short and The contact area is small, which is easy to cause the problems of low purification efficiency and high production cost.

The invention provides an exhaust gas treatment device, comprising a condensation unit for cooling exhaust gas, a gas-liquid mixing unit for mixing exhaust gas and purification liquid to form a turbulent state, and a separation unit for separating exhaust gas and purification liquid; wherein,

The gas-liquid mixing unit communicates with the condensing unit and the separation unit respectively, and the condensing unit communicates with the lower end of the separation unit via the first liquid pumping assembly, so that the purified liquid can be separated in the condensing unit, the gas-liquid mixing unit, and the separation unit. A cycle path is formed between the units;

The condensing unit includes a cooling cylinder, a slow-flow cylinder and a liquid-phase spray end arranged in the cooling cylinder, and a first cooling cavity is formed around the periphery of the slow-flow cylinder and the inner wall of the cooling cylinder. A second cooling cavity communicated with the first cooling cavity is formed between the top surface of the slow flow cylinder and the inner top surface of the cooling cylinder, and a cooling cavity communicating with the separation unit is provided in the first cooling cavity. The liquid-phase spray end of the second cooling cavity communicates with the top surface of the slow flow cylinder, the exhaust gas input end of the cooling cylinder communicates with the first cooling cavity, and the exhaust gas input end communicates with the first cooling cavity. The input exhaust gas is output through the first cooling cavity, the second cooling cavity and the slow flow tube in order to reduce the temperature of the exhaust gas.

Further, a distribution plate is provided between the inner top surface of the cooling cylinder and the top surface of the slow flow cylinder, and several water holes are opened through the distribution plate corresponding to the inner diameter of the slow flow cylinder. The connecting end of the cylinder and the cooling cylinder is provided with a number of drainage holes communicating with the first cooling cavity. Nozzle, the first liquid inlet nozzle and the second liquid inlet nozzle communicate with the first cooling cavity and the second cooling cavity respectively, and the liquid phase spray end communicates with the first liquid inlet nozzle , the liquid-phase spraying end includes a first spraying pipe and a plurality of first spraying heads fixed on the first spraying pipe at intervals, and the first spraying pipe communicates with the first liquid inlet nozzle.

Further, the gas-liquid mixing unit includes a mixer main body and a second spray assembly arranged inside the mixer main body. The mixer main body is generally conical in shape, and the upper end of the mixer main body is provided with two liquid inlets at intervals. The upper end of the mixer main body is located between the two liquid inlets and is provided with an air inlet connected to the slow flow cylinder, and the lower end of the mixer main body is provided with a liquid outlet connected to the separation unit. The second spray assembly includes a second spray pipe and several second spray heads, the second spray pipe is in the shape of a semicircle, the inner diameter of the second spray pipe decreases gradually, and the second spray pipe The end with a larger inner diameter communicates with a liquid inlet, and the plurality of second spray heads are arranged obliquely at intervals on the side of the second spray pipe close to the inner wall of the main body of the mixer.

Further, a cone is arranged inside the mixer body below the two second spray assemblies, and at least two connecting rods are arranged on the circumference of the cone, and the cone is fixedly connected to the mixer body via the connecting rods , a liquid separation block is fixed in the liquid outlet, and a number of liquid separation holes are opened through the liquid separation block, and the liquid separation holes are conically arranged downwards.

Further, it also includes a liquid storage tank for storing the purified liquid, a second liquid pumping component and a third liquid pumping component, the liquid storage tank communicates with the gas-liquid mixing unit through the second liquid pumping component, and the liquid storage The tank is also connected to the lower end of the separation unit via the third pumping component, so that the purified liquid can form a secondary circulation path between the gas-liquid mixing unit, the separation unit and the liquid storage tank.

Further, the first liquid suction assembly includes a first liquid suction pipeline, a first liquid suction pump body connected to the first liquid suction pipeline, and a first liquid distribution pipeline, and the first liquid suction pipeline One end of the first pumping line communicates with the lower end of the separation unit, and the other end of the first pumping line communicates with the first liquid inlet and the second liquid inlet respectively via two first liquid distribution lines; The liquid assembly includes a second liquid suction pipeline, a second liquid suction pump body connected to the second liquid suction pipeline, and a second liquid distribution pipeline, one end of the second liquid suction pipeline is connected to the lower end of the liquid storage tank The other end of the second pumping line is connected to the two liquid inlets respectively via two second liquid distribution lines; the third pumping assembly includes a third pumping line and a third pumping line The third liquid pump body connected with the liquid pipeline, one end of the third liquid suction pipeline is connected with the lower end of the liquid storage tank, and the other end of the third liquid suction pipeline is connected with the lower end of the separation unit Pass.

Further, it also includes a liquid seal assembly, the liquid seal assembly includes a liquid seal tank and an air guide tube, the side wall of the cooling cylinder is also provided with a connecting nozzle that communicates with the first cooling cavity, and the air guide tube One end communicates with the connection nozzle, and the other end of the air guide tube extends into the liquid seal tank and is located below the liquid level of the purification liquid.

Further, the side wall at the lower end of the separation unit is provided with a liquid level sensor and a processor, and the liquid level sensor, the processor and the third pump body are electrically connected.

Further, the lower end of the separation unit is also connected with a fourth pump body and a pH sensor, and the pH sensor, the fourth pump body and the processor are electrically connected.

Further, the middle part of the top of the cooling cylinder is provided with a rotating shaft, the lower end of the rotating shaft is fixed with a scraper in contact with the surface of the distribution plate, the upper end of the rotating shaft is fixed with a rotating handle, and the cooling A cleaning hole is opened on the top of the cylinder to facilitate cleaning of the distribution plate, and a cover plate is arranged on the opening and closing of the cleaning hole.

The beneficial effects of the present invention are: the present invention provides a waste gas treatment device, the gas-liquid mixing unit communicates with the condensing unit and the separating unit respectively, and the condensing unit communicates with the lower end of the separating unit via the first liquid pumping component, so that the purified liquid is A circulation path is formed between the condensing unit, the gas-liquid mixing unit and the separation unit, and the exhaust gas is output through the first cooling cavity, the second cooling cavity, and the slow flow cylinder through the input end of the exhaust gas, which prolongs the time spent by the exhaust gas in the condensing unit. At the same time, the purification liquid is recycled in the purification device, and there is no need to continuously replenish new purification liquid, which effectively reduces the purification cost.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a schematic structural view of a waste gas treatment device of the present invention;

Fig. 2 is the structural representation of condenser of the present invention;

Fig. 3 is a sectional view along A-A direction of Fig. 2;

Fig. 4 is the structural representation of gas-liquid mixing unit of the present invention;

Fig. 5 is the front view of the gas-liquid mixing unit of the present invention;

Fig. 6 is a sectional view of the liquid separation block of the present invention;

Fig. 7 is a schematic diagram of the structure of the distribution plate of the present invention.

detailed description

Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

The invention provides an exhaust gas treatment device, comprising a condensation unit 1 for cooling exhaust gas, a gas-liquid mixing unit 2 for mixing exhaust gas and purification liquid to form a turbulent state, and a separation unit 3 for separating exhaust gas and purification liquid. Wherein, the gas-liquid mixing unit 2 communicates with the condensing unit 1 and the separation unit 3 respectively, and the condensing unit 1 communicates with the lower end of the separation unit 3 via the first liquid pumping assembly 4, so that the purified liquid can be mixed in the condensing unit 1 and the gas-liquid A primary circulation path is formed between the unit 2 and the separation unit 3; the purification liquid is circulated in the purification device without constantly replenishing new purification liquid.

The condensing unit 1 includes a cooling cylinder 11, a slow flow cylinder 12 disposed in the cooling cylinder 11 and a liquid-phase spray end 13, and a first cooling cavity is formed around the periphery of the slow flow cylinder 12 and the inner wall of the cooling cylinder 11 14. A second cooling cavity 15 communicating with the first cooling cavity 14 is formed between the top surface of the slow flow cylinder 12 and the inner top surface of the cooling cylinder 11. The first cooling cavity 14 is provided with a separation unit 3 The connected liquid-phase spray end 13, the second cooling cavity 15 communicates with the top surface of the slow flow cylinder 12, the exhaust gas input end 16 of the cooling cylinder 11 communicates with the first cooling cavity 14, and enters through the exhaust gas input end 16 The exhaust gas is output through the first cooling cavity 14, the second cooling cavity 15, and the slow flow tube 12 in order to reduce the temperature of the exhaust gas.

In this specific embodiment, a distribution plate 17 is provided between the inner top surface of the cooling cylinder 11 and the top surface of the slow flow cylinder 12, and a number of water holes are opened through the distribution plate 17 corresponding to the inner diameter of the slow flow cylinder 12. 171, the connecting end of the slow flow cylinder 12 and the cooling cylinder 11 is provided with a number of drainage holes 121 communicating with the first cooling cavity 14, and the side walls of the upper end of the cooling cylinder 11 are respectively provided with first inlets on both sides of the distribution plate 17. The liquid pipe mouth 18 and the second liquid inlet pipe mouth 19, the first liquid inlet pipe mouth 18 and the second liquid inlet pipe mouth 19 communicate with the first cooling cavity 14 and the second cooling cavity 15 respectively, and the liquid phase spraying End 13 is in communication with the first liquid inlet nozzle 18, and liquid phase spray end 13 comprises first shower pipe 131 and some first shower nozzles 132 that are fixed on the first shower pipe 131 at intervals, and the first shower pipe 131 communicates with the first liquid inlet nozzle 18 .

In order to ensure that the water hole 171 on the distribution plate 17 is not blocked, the middle part of the top of the cooling cylinder 11 is rotated to be provided with a rotating shaft 111, and the lower end of the rotating shaft 111 is fixed with a scraper 112 in contact with the surface of the distribution plate 17. The upper end of 111 is fixedly provided with rotating handle 113, and the top of cooling tube 11 is provided with the cleaning hole that is convenient to cleaning distribution plate 17, and the opening and closing of cleaning hole is provided with cover plate 114.

The gas-liquid mixing unit 2 includes a mixer main body 21 and a second spray assembly 22 arranged inside the mixer main body 21. The mixer main body 21 is generally conical, and the upper end of the mixer main body 21 is provided with two liquid inlets at intervals. 211, the upper end of the mixer main body 21 is located between the two liquid inlets 211 and is provided with an air inlet 212 communicating with the slow flow cylinder 12, and the lower end of the mixer main body 21 is provided with a liquid outlet 213 communicating with the separation unit 3 , the second shower assembly 22 includes a second shower pipe 221 and a number of second shower heads 222, the second shower pipe 221 is in the shape of a semicircle, the inner diameter of the second shower pipe 221 gradually decreases, and the second shower pipe The end with a larger inner diameter of 221 communicates with a liquid inlet 211 , and several second spray heads 222 are evenly spaced and obliquely arranged on the side of the second spray pipe 221 close to the inner wall of the mixer main body 21 .

In this specific embodiment, a cone 23 is provided inside the mixer main body 21 below the two second spray assemblies 22, and at least two connecting rods 231 are arranged on the circumference of the cone 23, and the cone 23 is connected to the The main body 21 of the mixer is fixedly connected, and the liquid outlet 213 is fixed with a liquid dispensing block 24 , and a plurality of liquid distributing holes 241 are opened through the liquid distributing block 24 , and the liquid distributing holes 241 are set downward in a tapered shape.

The first pumping assembly 4 includes a first liquid pumping pipeline 41, a first liquid pumping body 42 communicated with the first liquid pumping pipeline 41, and a first liquid separating pipeline 43. The first liquid pumping pipeline One end of 41 communicates with the lower end of the separation unit 3, and the other end of the first pumping pipeline 41 communicates with the first liquid inlet 18 and the second liquid inlet 19 via two first liquid distribution pipelines 43, respectively. .

The liquid storage tank 5 is connected with the gas-liquid mixing unit 2 and the separation unit 3, and the purification liquid in the liquid storage tank 5 is drawn into the gas-liquid mixing unit 2 to strengthen the contact area with the waste gas and improve the purification of the waste gas by the purification liquid At the same time, when the purification liquid in the separation unit 3 accumulates to a certain height, the purification liquid in the separation unit 3 can be pumped into the liquid storage tank 5, so that the purification liquid can be recycled in the purification device without constantly replenishing new purification Liquid, effectively reducing the cost of purification.

The second liquid pumping assembly 6, the second liquid pumping assembly 6, which includes a second liquid pumping pipeline 61, a second liquid pumping pump body 62 communicated with the second liquid pumping pipeline 61, and a second liquid separating pipeline 63 One end of the second liquid suction pipeline 61 communicates with the lower end of the liquid storage tank 5 , and the other end of the second liquid suction pipeline 61 communicates with the two liquid inlets 211 via two second liquid distribution pipelines 63 .

The third pumping assembly 7 includes a third liquid pumping pipeline 71 and a third liquid pumping pump body 72 communicated with the third liquid pumping pipeline 71, one end of the third liquid pumping pipeline 71 is connected to the liquid storage tank 5 The lower end of the third pumping pipeline 71 is communicated with the lower end of the separation unit 3 .

The liquid seal assembly 8 includes a liquid seal tank 81 and an air guide tube 82. The side wall of the cooling cylinder 11 is also provided with a connecting nozzle 10 communicating with the first cooling cavity 14. One end of the air guide tube 82 is connected to the connecting nozzle 10 The other end of the air guide tube 82 extends into the liquid seal tank 81 and is located below the liquid level of the purification liquid.

On the basis of the above-mentioned technical scheme, considering the inconvenient control of the height of the purified liquid at the lower end of the separation unit 3, the side wall at the lower end of the separation unit 3 is provided with a liquid level sensor 31 and a processor 32, the liquid level sensor 31, the processor 32 and the third The liquid suction pump bodies 72 are electrically connected. When the liquid level sensor 31 detects that the purified liquid at the lower end of the separation unit 3 reaches a certain height, the processor 32 controls the third pump body 72 to pump the purified liquid in the separation unit 3 into the liquid storage tank 5 . In order to avoid that the purification liquid is completely neutralized and loses the purification effect, the lower end of the separation unit 3 is also connected with a fourth pump body 33 and a pH sensor 34, between the pH sensor 34, the fourth pump body 33 and the processor 32 Electrically connected, when the pH sensor 34 detects that the purified liquid reaches a certain pH value, the fourth pump body 33 can discharge the purified liquid from the lower end of the separation unit 3, thereby replacing it with a new purified liquid.

During actual use, the exhaust gas enters the first cooling cavity 14 through the exhaust gas input port 16, and under the action of the first liquid pump body 42, the purified liquid in the separation unit 3 is introduced into the first spray pipe 131, A number of first nozzles 132 spray down the purification liquid to contact the rising waste gas for cooling and purification; at the same time, the waste gas also enters into the slow flow cylinder 12 through the slow flow cylinder 12 and enters through the second liquid inlet nozzle 19 The cooling liquid falls into the inside of the slow flow cylinder 12 through the water hole 171 on the distribution plate 17, and after the purification liquid dripped from the distribution plate 17 contacts the exhaust gas, it is cooled and purified again; the exhaust gas and the purification liquid pass through The air inlet 212 on the mixer main body 21 enters into the mixer main body 21, and under the action of the second liquid suction pump body 62, the purified liquid in the liquid storage tank 5 is introduced into the second spray pipe 221, and several The second nozzle 222 sprays the purification liquid downward to form a swirling flow in the mixer main body 21, and is broken up after hitting the cone 23, increasing the contact area with the exhaust gas, and the exhaust gas and purification liquid enter the separation unit 3 through the liquid outlet 213 , the purified waste gas is discharged from the upper end of the separation unit 3, and the purification liquid is collected at the bottom of the separation unit 3; Transported to the storage tank 5 for recycling.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any changes that can be easily imagined by those skilled in the art within the technical scope disclosed in the present invention Or replacement, all should be covered within the protection scope of the present invention.

Claims

An exhaust gas treatment device, characterized in that it includes a condensation unit for cooling exhaust gas, a gas-liquid mixing unit for mixing exhaust gas and purification liquid to form a turbulent state, and a separation unit for separating exhaust gas and purification liquid; wherein,

The gas-liquid mixing unit communicates with the condensing unit and the separation unit respectively, and the condensing unit communicates with the lower end of the separation unit via the first liquid pumping assembly, so that the purified liquid can be separated in the condensing unit, the gas-liquid mixing unit, and the separation unit. A cycle path is formed between the units;

The condensing unit includes a cooling cylinder, a slow-flow cylinder and a liquid-phase spray end arranged in the cooling cylinder, and a first cooling cavity is formed around the periphery of the slow-flow cylinder and the inner wall of the cooling cylinder. A second cooling cavity communicated with the first cooling cavity is formed between the top surface of the slow flow cylinder and the inner top surface of the cooling cylinder, and a cooling cavity communicating with the separation unit is provided in the first cooling cavity. The liquid-phase spray end of the second cooling cavity communicates with the top surface of the slow flow cylinder, the exhaust gas input end of the cooling cylinder communicates with the first cooling cavity, and the exhaust gas input end communicates with the first cooling cavity. The input exhaust gas is output through the first cooling cavity, the second cooling cavity and the slow flow tube in order to reduce the temperature of the exhaust gas.
The exhaust gas treatment device according to claim 1, wherein a distribution plate is arranged between the inner top surface of the cooling tube and the top surface of the slow flow tube, and the distribution plate corresponds to the inner diameter of the slow flow tube A number of water holes are opened in the area, and the connecting end of the slow flow tube and the cooling tube is provided with a number of drainage holes communicating with the first cooling cavity, and the side walls of the upper end of the cooling tube are located on both sides of the distribution plate A first liquid inlet nozzle and a second liquid inlet nozzle are respectively provided, and the first liquid inlet nozzle and the second liquid inlet nozzle communicate with the first cooling cavity and the second cooling cavity respectively, and the The liquid-phase spray end is connected with the first liquid inlet pipe, and the liquid-phase spray end includes a first spray pipe and a plurality of first spray heads fixed on the first spray pipe at intervals. The shower pipe is in communication with the first liquid inlet pipe port.
The exhaust gas treatment device according to claim 2, wherein the gas-liquid mixing unit comprises a mixer body and a second spray assembly arranged inside the mixer body, and the mixer body has a conical shape as a whole , the upper end of the mixer main body is provided with two liquid inlets at intervals, the upper end of the mixer main body is located between the two liquid inlets, and an air inlet connected to the slow flow cylinder is provided at the upper end of the mixer main body, and the lower end of the mixer main body A liquid outlet connected to the separation unit is provided, the second spray assembly includes a second spray pipe and several second spray heads, the second spray pipe is in the shape of a semicircle, and the second spray pipe The inner diameter of the second spray pipe gradually decreases, and the end with a larger inner diameter of the second spray pipe is connected to a liquid inlet, and several second spray heads are arranged obliquely at intervals on one side of the second spray pipe close to the inner wall of the main body of the mixer. side.
The exhaust gas treatment device according to claim 3, wherein a cone is arranged inside the mixer body below the two second spray assemblies, and at least two connecting rods are arranged on the circumference of the cone , the cone is fixedly connected to the main body of the mixer via a connecting rod, a liquid separation block is fixed in the liquid outlet, and a number of liquid separation holes are opened through the liquid separation block, and the liquid separation holes are conical toward Next settings.
The exhaust gas treatment device according to claim 3, further comprising a liquid storage tank for storing the purification liquid, a second liquid pumping assembly, and a third liquid pumping assembly, the liquid storage tank passes through the second pumping The liquid component is connected to the gas-liquid mixing unit, and the liquid storage tank is also connected to the lower end of the separation unit through the third liquid pumping component, so that the purified liquid can flow between the gas-liquid mixing unit, the separation unit and the liquid storage tank Form a secondary circulation path.
The exhaust gas treatment device according to claim 5, wherein the first liquid pumping assembly comprises a first liquid pumping pipeline, a first liquid pumping body communicated with the first liquid pumping pipeline, and a second A liquid distribution pipeline, one end of the first liquid suction pipeline is connected to the lower end of the separation unit, and the other end of the first liquid suction pipeline is respectively connected to the first liquid inlet pipe through two first liquid distribution pipelines. The mouth is connected with the second liquid inlet pipe port; the second liquid pumping assembly includes a second liquid pumping pipeline, a second liquid pumping body and a second liquid distribution pipeline communicated with the second liquid suction pipeline, and the One end of the second pumping line communicates with the lower end of the liquid storage tank, and the other end of the second pumping line communicates with the two liquid inlets respectively via two second liquid distribution lines; the third pumping line The liquid assembly includes a third liquid suction pipeline and a third liquid suction pump body connected with the third liquid suction pipeline, one end of the third liquid suction pipeline communicates with the lower end of the liquid storage tank, and the third The other end of the pumping pipeline communicates with the lower end of the separation unit.
The exhaust gas treatment device according to claim 1, further comprising a liquid seal assembly, the liquid seal assembly includes a liquid seal tank and an air duct, and the side wall of the cooling cylinder is also provided with a The cavity is connected to a connection nozzle, one end of the air guide tube is connected to the connection nozzle, and the other end of the air guide tube extends into the liquid seal tank and is located below the liquid level of the purification liquid.
The exhaust gas treatment device according to claim 6, characterized in that, the side wall at the lower end of the separation unit is provided with a liquid level sensor and a processor, and the liquid level sensor, the processor and the third liquid suction pump body Electrical connection between.
The exhaust gas treatment device according to claim 8, characterized in that, the lower end of the separation unit is also connected with a fourth liquid suction pump body and a pH sensor, and the pH sensor, the fourth liquid suction pump body and the processor electrical connection between.
An exhaust gas treatment device according to claim 2, characterized in that, the middle part of the top of the cooling cylinder is provided with a rotating shaft, and the lower end of the rotating shaft is fixed with a scraper in contact with the surface of the distribution plate, so that The upper end of the rotating shaft is fixed with a rotating handle, and the top end of the cooling cylinder is provided with a cleaning hole for cleaning the distribution plate, and a cover plate is arranged on the opening and closing of the cleaning hole.