Waste gas treatment device

Abstract

The utility model relates to a waste gas treatment device, which belongs to the field of waste gas treatment, and comprises a condensing box, the inner wall of the condensing box is provided with a treatment mechanism for carrying out diversified treatment on waste gas, the upper surface of the treatment mechanism is provided with a purification mechanism for filtering and purifying the waste gas, and the treatment mechanism comprises a condensing pipe. According to the waste gas treatment device, the treatment mechanism is arranged, waste gas firstly enters the condensation pipe, the temperature of the waste gas is reduced through the condensation effect, pollutants in part of the waste gas are condensed and then separated from the gas state, heat exchange fins enhance the heat exchange efficiency of the condensation pipe, and a cooling fan sucks or discharges air through a ventilation hood; the temperature in the condensation tank is maintained, the condensation effect is promoted, the transfer pipe transfers condensation liquid or pollutants at the bottom end of the condensation pipe to other treatment units such as an alkali liquor neutralization tank, acidic or alkaline pollutants in waste gas are in contact with alkali liquor or acid liquor to generate neutralization reaction, and harmful effects of the pollutants are reduced.

Description

Technical Field

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

[0002] Adhesive production typically uses stirred tanks and reactors to process materials, involving both chemical and physical processes. Exhaust emissions have always been a significant challenge in this field. Reactors, in particular, operate at temperatures exceeding 200°C, creating not only volatilization of materials but also the volatilization of higher-boiling-point solvents, reactants, and by-products. These complex compositions, combined with the higher molecular weight and structure of high-boiling-point substances, often make conventional absorption and reaction procedures for light material handling difficult to apply, resulting in increased VOC emissions.

[0003] As disclosed in Chinese Patent Publication No. (CN212680119U), an exhaust gas treatment device for adhesive production specifically relates to the field of exhaust gas treatment, including a reactor, a condensing device, an arc device and an adsorption device. A first condensing mechanism and a second condensing mechanism are arranged inside the condensing device. The first condensing mechanism and the second condensing mechanism both include a condensing box arranged at the outer end of the condensing device, a liquid pump is fixedly arranged at the outer end of the condensing box, and the output end of the liquid pump is connected to a condensing pipe, which is arranged inside the condensing device. The bottom end of the condensing device is connected to the internal cavity of the reactor, and the air outlet of the condensing device is connected to the inlet end of the arc device through an air duct. This utility model can not only recover the effective components in the exhaust gas, but also has a better recovery effect, can keep the reactor warm, reduce the heat loss inside the reactor, and make the resource utilization rate high.

[0004] However, as in the above patent, there is still the problem of poor purification effect for the exhaust gas generated by the adhesive production. In the above patent, the solid matter in the exhaust gas is condensed and settled by a condensing device and an arc device, and then the exhaust gas is electrolyzed by the arc device. However, the exhaust gas is mixed with harmful substances of different properties. The purification diversity of the existing technology is poor and cannot effectively and completely remove the harmful substances in the exhaust gas. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a waste gas treatment device with the advantages of good tail gas treatment and purification effect, which solves the problem of poor tail gas treatment and purification effect generated by adhesive production in the existing technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an exhaust gas treatment device, comprising a condensation box, wherein the inner wall of the condensation box is provided with a treatment mechanism for performing various treatments on the exhaust gas, and the upper surface of the treatment mechanism is provided with a purification mechanism for filtering and purifying the exhaust gas;

[0007] The treatment mechanism includes a condenser, heat exchange fins, a ventilation hood, a cooling fan, a transfer pipe, an alkali liquid neutralization tank, an acid liquid neutralization tank and an exhaust component. The condenser is fixed to the inner wall of the condensation box, the heat exchange fins are fixed to the inner wall of the condensation box and are located on the outside of the condenser, an air outlet is provided on the inner top wall of the condensation box, and the ventilation hood is fixed to the inner wall of the air outlet, the cooling fan is fixed to the inner wall of the ventilation hood, the transfer pipe is connected to the bottom end of the condenser, the alkali liquid neutralization tank is fixed to the right side of the condensation box, the acid liquid neutralization tank is fixed to the right side of the alkali liquid neutralization tank, and the exhaust component is arranged on the upper surface of the alkali liquid neutralization tank to transfer the waste gas in the alkali liquid neutralization tank to the acid liquid neutralization tank.

[0008] Furthermore, the exhaust component includes a first fan, an exhaust pipe and an air supply pipe. The first fan is fixed to the upper surface of the alkali liquid neutralization tank. One end of the exhaust pipe is connected to the air inlet end of the first fan, and the other end of the exhaust pipe passes through and extends to the inner top wall of the alkali liquid neutralization tank. One end of the air supply pipe is connected to the air outlet end of the first fan, and the other end of the air supply pipe passes through and extends to the inner bottom wall of the acid liquid neutralization tank.

[0009] Furthermore, the top end of the condensing pipe passes through and extends to the outside of the condensing box and is connected to an air intake fan, and air inlets are provided on the front and rear inner walls of the condensing box.

[0010] Furthermore, the bottom end of the transfer pipe passes through and extends to the inner bottom wall of the alkali solution neutralization tank, and the shape of the condenser is S-shaped.

[0011] Furthermore, the purification mechanism includes a filter box, a connecting pipe, a filter layer, a catalyst bed, a second fan, an air intake pipe and a heat treatment component. The filter box is fixed to the upper surface of the acid liquid neutralization tank, one end of the connecting pipe is connected to the lower surface of the filter box, and the other end of the connecting pipe passes through and extends to the inner top wall of the acid liquid neutralization tank, the filter layer is fixed to the bottom of the inner wall of the filter box, the catalyst bed is fixed to the top of the inner wall of the filter box, the second fan is fixed to the upper surface of the filter box, one end of the air intake pipe is connected to the air inlet end of the second fan, and the other end of the air intake pipe passes through and extends to the inner top wall of the filter box, and the heat treatment component is arranged on the right side of the acid liquid neutralization tank to perform thermal treatment and decomposition on the exhaust gas.

[0012] Furthermore, the heat treatment part includes a heating box, a heat circulation pipe and several electric heating rods. The heating box is fixed to the right side of the acid neutralization tank, the heat circulation pipe is fixed to the inner wall of the heating box, the top of the heat circulation pipe is connected to the air outlet end of the second fan, and several electric heating rods are fixed to the inner wall of the heating box.

[0013] Furthermore, the top end of the heat circulation pipe passes through and extends to the outside of the heating box and is connected to a discharge pipe, and the filter layer is an activated carbon layer.

[0014] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0015] 1. The exhaust gas treatment device is equipped with a treatment mechanism. The exhaust gas first enters the condenser tube, where the exhaust gas temperature is lowered by condensation, causing some pollutants in the exhaust gas to condense and thus be separated from the gaseous state. The heat exchange fins enhance the heat exchange efficiency of the condenser tube. The cooling fan inhales or exhausts air through the ventilation hood to help maintain the temperature in the condensation box and promote the condensation effect. The transfer pipe transfers the condensed liquid or pollutants at the bottom of the condenser tube to other treatment units, such as the alkali solution neutralization tank. The acidic or alkaline pollutants in the exhaust gas come into contact with the alkali solution or acid solution to undergo a neutralization reaction, thereby reducing the harmful effects of the pollutants.

[0016] 2. The exhaust gas treatment device is equipped with a purification mechanism. The filter layer physically filters out solid particles in the exhaust gas, such as dust. Under the action of the catalyst, the harmful gases in the exhaust gas undergo chemical reactions and are converted into relatively harmless substances. The second fan provides power to allow the exhaust gas to pass through the filter layer and the catalyst bed to ensure that the exhaust gas is fully treated. The heat treatment component heat treats the exhaust gas to increase the rate of the chemical reaction and ensure that the harmful gases are effectively decomposed. The intake pipe guides the preliminarily treated exhaust gas into the filter box and catalyst bed. The entire device finally achieves exhaust gas purification through multiple steps such as physical separation, chemical neutralization, catalytic reaction and heat treatment. Each step is designed for specific pollutants in the exhaust gas to ensure that the entire system can effectively treat the exhaust gas and meet environmental protection requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the processing mechanism of the utility model;

[0019] Figure 3 This is a schematic diagram of the purification mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the filter box of the present utility model.

[0021] In the figure: 1 condensation box, 2 treatment mechanism, 21 condensation tube, 22 heat exchange fin, 23 ventilation hood, 24 cooling fan, 25 transfer pipe, 26 alkali solution neutralization tank, 27 acid solution neutralization tank, 28 exhaust component, 281 first fan, 282 exhaust pipe, 283 air supply pipe, 3 purification mechanism, 31 filter box, 32 connecting pipe, 33 filter layer, 34 catalyst bed, 35 second fan, 36 air inlet pipe, 37 heat treatment component, 371 heating box, 372 heat circulation pipe, 373 electric heating rod. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1 An exhaust gas treatment device in this embodiment includes a condensation box 1. The inner wall of the condensation box 1 is provided with a treatment mechanism 2 for performing various treatments on the exhaust gas. The upper surface of the treatment mechanism 2 is provided with a purification mechanism 3 for filtering and purifying the exhaust gas.

[0024] See also Figure 2 In order to condense the exhaust gas, the treatment mechanism 2 in this embodiment includes a condensing pipe 21, a heat exchange fin 22, a ventilation hood 23, a cooling fan 24, a transfer pipe 25, an alkali solution neutralization tank 26, an acid solution neutralization tank 27 and an exhaust member 28. The condensing pipe 21 is fixed to the inner wall of the condensing box 1, the heat exchange fin 22 is fixed to the inner wall of the condensing box 1 and is located on the outside of the condensing pipe 21. An air outlet is provided on the inner top wall of the condensing box 1, and the ventilation hood 23 is fixed to the inner wall of the air outlet. The cooling fan 24 is fixed to the inner wall of the ventilation hood 23. The cooling fan 24 inhales and discharges air through the ventilation hood 23 to help maintain the temperature in the condensing box 1 and promote the condensation effect. The transfer pipe 25 is connected to the bottom end of the condensing pipe 21, and the exhaust gas first enters The condenser 21 lowers the temperature of the exhaust gas through condensation, condenses part of the pollutants in the exhaust gas, and separates them from the gaseous state. The alkali solution neutralization tank 26 is fixed to the right side of the condensation box 1, and the acid solution neutralization tank 27 is fixed to the right side of the alkali solution neutralization tank 26. The heat exchange fins 22 enhance the heat exchange efficiency of the condenser 21 and accelerate the condensation process by increasing the surface area. The exhaust piece 28 is arranged on the upper surface of the alkali solution neutralization tank 26 to transfer the exhaust gas in the alkali solution neutralization tank 26 to the acid solution neutralization tank 27. The transfer pipe 25 transfers the exhaust gas in the condenser 21 to other treatment units, such as the alkali solution neutralization tank 26. The acidic or alkaline pollutants and condensation products in the exhaust gas are neutralized by contact with the alkali solution or acid solution, thereby reducing the harmful effects of the pollutants.

[0025] The exhaust component 28 includes a first fan 281, an exhaust pipe 282 and an air supply pipe 283. The first fan 281 is fixed to the upper surface of the alkali liquid neutralization tank 26. One end of the exhaust pipe 282 is connected to the air inlet end of the first fan 281, and the other end of the exhaust pipe 282 passes through and extends to the inner top wall of the alkali liquid neutralization tank 26. One end of the air supply pipe 283 is connected to the air outlet end of the first fan 281, and the other end of the air supply pipe 283 passes through and extends to the inner bottom wall of the acid liquid neutralization tank 27. Through the combination of the first fan 281, the exhaust pipe 282 and the air supply pipe 283, the waste gas treated with alkali liquid neutralization is transferred to the acid liquid neutralization tank 27 for further treatment.

[0026] In this embodiment, the top end of the condenser tube 21 passes through and extends to the outside of the condensation box 1 and is connected to the air intake fan. Air inlets are provided on the front and rear inner walls of the condensation box 1. The bottom end of the transfer tube 25 passes through and extends to the inner bottom wall of the alkali solution neutralization tank 26. The shape of the condenser tube 21 is S-shaped.

[0027] See also Figure 3-4 In order to further purify the treated exhaust gas for discharge, the purification mechanism 3 in this embodiment includes a filter box 31, a connecting pipe 32, a filter layer 33, a catalyst bed 34, a second fan 35, an air inlet pipe 36 and a heat treatment member 37. The filter box 31 is fixed to the upper surface of the acid neutralization tank 27, one end of the connecting pipe 32 is connected to the lower surface of the filter box 31, and the other end of the connecting pipe 32 passes through and extends to the inner top wall of the acid neutralization tank 27, the filter layer 33 is fixed to the bottom of the inner wall of the filter box 31, the catalyst bed 34 is fixed to the top of the inner wall of the filter box 31, and the filter layer 33 is fixed to the bottom of the inner wall of the filter box 31. 3 Physically filters out solid particles in the exhaust gas, such as dust. Under the action of the catalyst, harmful gases in the exhaust gas undergo a chemical reaction and are converted into relatively harmless substances. The second fan 35 is fixed to the upper surface of the filter box 31. One end of the air inlet pipe 36 is connected to the air inlet end of the second fan 35. The second fan 35 provides power to allow the exhaust gas to pass through the filter layer 33 and the catalyst bed 34 to ensure that the exhaust gas is fully treated. The other end of the air inlet pipe 36 penetrates and extends to the inner top wall of the filter box 31. The heat treatment component 37 is set on the right side of the acid neutralization tank 27 to perform thermal treatment and decomposition on the exhaust gas.

[0028] The heat treatment component 37 includes a heating box 371, a heat circulation pipe 372 and several electric heating rods 373. The heating box 371 is fixed to the right side of the acid neutralization tank 27, the heat circulation pipe 372 is fixed to the inner wall of the heating box 371, the top of the heat circulation pipe 372 is connected to the air outlet end of the second fan 35, and several electric heating rods 373 are fixed to the inner wall of the heating box 371. The heat treatment component 37 includes a heating box 371, a heat circulation pipe 372 and electric heating rods 373, which perform heat treatment on the exhaust gas, increase the rate of chemical reaction, ensure that harmful gases are effectively decomposed, and when the exhaust gas is heated to a high temperature, the organic matter is burned and decomposed into carbon dioxide and water vapor.

[0029] In this embodiment, the top end of the heat circulation pipe 372 passes through and extends to the outside of the heating box 371 and is connected to the exhaust pipe. The filter layer 33 is an activated carbon layer, and the air inlet pipe 36 guides the preliminarily treated exhaust gas into the filter box 31 and the catalyst bed 34.

[0030] The working principle of the above embodiment is:

[0031] (1) When the waste gas is condensed and used for treatment, the waste gas first enters the condenser tube 21, where the waste gas temperature is lowered by condensation, so that part of the pollutants in the waste gas are condensed and separated from the gaseous state. The heat exchange fins 22 enhance the heat exchange efficiency of the condenser tube 21 and accelerate the condensation process by increasing the surface area. The cooling fan 24 inhales and exhausts air through the ventilation hood 23, helping to maintain the temperature in the condensation box 1 and promote the condensation effect. The transfer pipe 25 transfers the waste gas in the condenser tube 21 to other treatment units, such as the alkali solution neutralization tank 26. The acidic or alkaline pollutants and condensation products in the waste gas are neutralized by contact with the alkali solution or acid solution, thereby reducing the harmful effects of the pollutants. The waste gas that has been neutralized with the alkali solution is transferred to the acid solution neutralization tank 27 for further treatment through the combination of the first fan 281, the exhaust pipe 282 and the air supply pipe 283.

[0032] (2) When the treated exhaust gas is further purified and discharged, the filter layer 33 physically filters out solid particles in the exhaust gas, such as dust, etc. Under the action of the catalyst, the harmful gases in the exhaust gas undergo chemical reactions and are converted into relatively harmless substances. The second fan 35 provides power to allow the exhaust gas to pass through the filter layer 33 and the catalyst bed 34 to ensure that the exhaust gas is fully treated. The heat treatment component 37 includes a heating box 371, a heat circulation pipe 372 and an electric heating rod 373 to perform heat treatment on the exhaust gas, increase the rate of the chemical reaction, and ensure that the harmful gases are effectively decomposed. The air inlet pipe 36 guides the exhaust gas that has undergone preliminary treatment into the filter box 31 and the catalyst bed 34.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0034] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. It is common knowledge in this field, so this application document will no longer explain the control method and circuit connection in detail.

[0035] Although the 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 these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An exhaust gas treatment device, comprising a condensation box (1), characterized in that: The inner wall of the condensation box (1) is provided with a processing mechanism (2) for performing various processing on the waste gas, and the upper surface of the processing mechanism (2) is provided with a purification mechanism (3) for filtering and purifying the waste gas; The processing mechanism (2) comprises a condenser (21), a heat exchange fin (22), a ventilation hood (23), a cooling fan (24), a transfer pipe (25), an alkali solution neutralization tank (26), an acid solution neutralization tank (27) and an exhaust member (28); the condenser (21) is fixed to the inner wall of the condenser box (1); the heat exchange fin (22) is fixed to the inner wall of the condenser box (1) and is located on the outer side of the condenser (21); an air outlet is provided on the inner top wall of the condenser box (1); and the ventilation hood (23) is provided with a cooling fan (24). 3) is fixed to the inner wall of the air outlet, the cooling fan (24) is fixed to the inner wall of the ventilation hood (23), the transfer pipe (25) is connected to the bottom end of the condenser pipe (21), the alkali solution neutralization tank (26) is fixed to the right side of the condensation box (1), the acid solution neutralization tank (27) is fixed to the right side of the alkali solution neutralization tank (26), and the exhaust member (28) is arranged on the upper surface of the alkali solution neutralization tank (26) to transfer the waste gas in the alkali solution neutralization tank (26) to the acid solution neutralization tank (27).

2. The exhaust gas treatment device according to claim 1, characterized in that: The exhaust component (28) comprises a first fan (281), an exhaust pipe (282) and an air supply pipe (283); the first fan (281) is fixed to the upper surface of the alkali solution neutralization tank (26); one end of the exhaust pipe (282) is connected to the air inlet end of the first fan (281), and the other end of the exhaust pipe (282) penetrates and extends to the inner top wall of the alkali solution neutralization tank (26); one end of the air supply pipe (283) is connected to the air outlet end of the first fan (281), and the other end of the air supply pipe (283) penetrates and extends to the inner bottom wall of the acid solution neutralization tank (27).

3. The exhaust gas treatment device according to claim 1, characterized in that: The top end of the condensation pipe (21) penetrates and extends to the outside of the condensation box (1) and is connected to an air intake fan. Air intake ports are provided on the front and rear inner walls of the condensation box (1).

4. The exhaust gas treatment device according to claim 1, characterized in that: The bottom end of the transfer pipe (25) penetrates and extends to the inner bottom wall of the alkali solution neutralization tank (26), and the shape of the condenser pipe (21) is S-shaped.

5. The exhaust gas treatment device according to claim 1, characterized in that: The purification mechanism (3) comprises a filter box (31), a connecting pipe (32), a filter layer (33), a catalyst bed (34), a second fan (35), an air inlet pipe (36) and a heat treatment member (37); the filter box (31) is fixed to the upper surface of the acid liquid neutralization tank (27); one end of the connecting pipe (32) is connected to the lower surface of the filter box (31); and the other end of the connecting pipe (32) penetrates and extends to the inner top wall of the acid liquid neutralization tank (27); the filter layer (33) is fixed to the upper surface of the acid liquid neutralization tank (27); ) is fixed to the bottom of the inner wall of the filter box (31), the catalyst bed (34) is fixed to the top of the inner wall of the filter box (31), the second fan (35) is fixed to the upper surface of the filter box (31), one end of the air inlet pipe (36) is connected to the air inlet end of the second fan (35), and the other end of the air inlet pipe (36) passes through and extends to the inner top wall of the filter box (31), and the heat treatment component (37) is arranged on the right side of the acid neutralization tank (27) to perform heat treatment and decomposition on the exhaust gas.

6. The exhaust gas treatment device according to claim 5, characterized in that: The heat treatment part (37) includes a heating box (371), a heat circulation pipe (372) and a plurality of electric heating rods (373); the heating box (371) is fixed to the right side of the acid neutralization tank (27); the heat circulation pipe (372) is fixed to the inner wall of the heating box (371); the top end of the heat circulation pipe (372) is connected to the air outlet end of the second fan (35); and the plurality of electric heating rods (373) are fixed to the inner wall of the heating box (371).

7. The exhaust gas treatment device according to claim 6, characterized in that: The top end of the heat circulation pipe (372) penetrates and extends to the outside of the heating box (371) and is connected to a discharge pipe. The filter layer (33) is an activated carbon layer.

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