CN215027613U

CN215027613U - Waste gas treatment device

Info

Publication number: CN215027613U
Application number: CN202121166803.6U
Authority: CN
Inventors: 王成林
Original assignee: Huize Nanjing Environmental Protection Technology Co ltd
Current assignee: Huize Nanjing Environmental Protection Technology Co ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-12-07
Anticipated expiration: 2031-05-28

Abstract

The utility model relates to an exhaust treatment device for handle the waste gas that contains the VOC composition, it includes: the treatment device comprises a treatment box, an air guide device and an exhaust pipe, wherein a cavity is formed in the treatment box, liquid medicine can be contained at the bottom of the cavity and used for carrying out chemical reaction with the VOC component, the air guide device comprises an air guide pipe and a first fan arranged in the air guide pipe, the air inlet end of the air guide pipe is arranged outside the treatment box, the air outlet end of the air guide pipe is arranged in the cavity, and the exhaust pipe is communicated with the cavity; the spraying system comprises a spray head and a circulating device, the spray head is arranged in the cavity, and the circulating device is used for circularly conveying the liquid medicine into the spray head; and the dispersing device is arranged in the cavity and used for dispersing the gas and the suspended particles in the cavity. Above-mentioned exhaust treatment device, when reducing exhaust treatment's energy consumption cost by a wide margin, can improve the reaction degree of VOC gas and vaporific liquid medicine.

Description

Waste gas treatment device

Technical Field

The utility model relates to an exhaust-gas treatment technical field especially relates to an exhaust-gas treatment device.

Background

In many plants, the exhaust gas contains a large amount of VOC components, and the VOC components in the exhaust gas need to be treated before being discharged. The prior art provides a waste gas treatment device for treating VOC composition, as shown in FIG. 1, a packing layer and a demister are arranged in the waste gas treatment device, which has two problems: firstly, after waste gas enters the waste gas treatment device through the air inlet, the waste gas can pass through the waste gas treatment device only by overcoming great resistance due to physical obstruction of the packing layer and the demister, and the process needs to arrange a high-power fan at a purified gas outlet, so that the energy consumption cost of waste gas treatment is greatly increased; secondly, the waste gas and the internal diffusion of the waste gas treatment device are unbalanced, so that the chemical reaction is insufficient, and the VOC component treatment is not up to the standard.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide an exhaust gas treatment device for solving the problems of high energy consumption cost and insufficient reaction in the treatment of the VOC-containing exhaust gas.

An exhaust gas treatment device for treating an exhaust gas containing VOC components, comprising:

the treatment device comprises a treatment box, an air guide device and an exhaust pipe, wherein a cavity is formed in the treatment box, liquid medicine can be contained at the bottom of the cavity and used for carrying out chemical reaction with the VOC component, the air guide device comprises an air guide pipe and a first fan arranged in the air guide pipe, the air inlet end of the air guide pipe is arranged outside the treatment box, the air outlet end of the air guide pipe is arranged in the cavity, and the exhaust pipe is communicated with the cavity;

the spraying system comprises a spray head and a circulating device, the spray head is arranged in the cavity, and the circulating device is used for circularly conveying the liquid medicine into the spray head; and

and the dispersing device is arranged in the cavity and used for dispersing the gas and the suspended particles in the cavity.

In one embodiment, the gas outlet end is spaced from the liquid level of the liquid medicine by a predetermined distance d, and d is greater than or equal to 0.1cm and less than or equal to 30 cm.

In one embodiment, the airway device further comprises a collection mask connected to the air inlet end of the airway tube.

In one embodiment, the spraying system further comprises a chemical agent pool, the chemical agent pool is arranged outside the treatment tank, the chemical agent pool is connected with the cavity through an overflow pipe, the circulating device comprises a circulating pump, one end of the circulating pump is arranged in the chemical agent pool, and the other end of the circulating pump is connected with the spray head.

In one embodiment, an automatic dosing device is disposed within the drug reservoir.

In one embodiment, the dispersion apparatus is a radial flow fan.

In one embodiment, a condensing device is disposed within the exhaust pipe.

In one embodiment, an adsorption device is disposed within the airway tube.

In one embodiment, an auxiliary reaction device is further disposed in the cavity.

In one embodiment, the auxiliary reaction device is an ultraviolet device or an ozone device.

Above-mentioned exhaust treatment device, including processing apparatus, spraying system and dispersion devices, be equipped with the cavity in handling the case, spraying apparatus's shower nozzle sets up in the cavity, and the shower nozzle can spout vaporific liquid medicine, and liquid medicine can carry out chemical reaction with the VOC composition in the waste gas, turns into innoxious substance with the VOC composition through chemical reaction, and dispersion devices sets up in the cavity. In the operation process, when the VOC gas is treated by chemical reaction in the cavity, on one hand, the waste gas is not physically blocked in the cavity and can be easily discharged out of the treatment box, so that the energy consumption cost for treating the waste gas can be greatly reduced; on the other hand, the dispersion devices arranged in the cavity can disperse the waste gas and the vaporous liquid medicine in the cavity, so that the VOC gas and the vaporous liquid medicine can be ensured to be fully reacted.

Drawings

FIG. 1 is a schematic diagram of a prior art exhaust treatment device;

FIG. 2 is a schematic structural view of an exhaust gas treatment device according to an embodiment;

FIG. 3 is a schematic structural view of an exhaust gas treatment device according to another embodiment;

FIG. 4 is a schematic structural view of an exhaust gas treatment device according to another embodiment;

FIG. 5 is a schematic structural view of an exhaust gas treatment device according to another embodiment;

FIG. 6 is a schematic structural view of an exhaust gas treatment device according to another embodiment;

FIG. 7 is a schematic structural view of an exhaust gas treatment device according to another embodiment;

fig. 8 is a schematic view of a passive radial flow fan according to an embodiment.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" or "in communication with" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper", "lower", "vertical", "horizontal", "left", "right" and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 2, an exhaust gas treatment device according to an embodiment includes: processing apparatus 10, spraying system 20, and dispersion apparatus 30.

The processing apparatus 10 further includes a processing tank 101, an air guide 102, and an exhaust pipe 103.

Specifically, the cavity 1011 is arranged in the treatment box 101, so that the treatment box 101 is provided with the capacity of accommodating objects, the shape of the cavity 1011 can be a cylinder, a cuboid or a cube, and can also be other irregular shapes, in the embodiment, the shape of the cavity 1011 is a cuboid shape, the bottom of the cavity 1011 is used for arranging liquid medicine, and the liquid medicine is used for decomposing VOC components in the waste gas.

The air guide device 102 comprises an air guide tube 1021 and a first fan 1022 arranged in the air guide tube 1021, wherein the air guide tube 1021 is used for guiding the VOC-containing waste gas generated by the waste gas source into the treatment tank 101.

Specifically, the inlet end of air duct 1021 sets up in the waste gas source top, and the end of giving vent to anger passes the box of handling case 101 and locates in cavity 1011, and first fan 1022 sets up in air duct 1021, and when first fan 1022 operation, can produce continuous negative pressure at the inlet end of air duct 1021 to make waste gas get into in air duct 1021 under the effect of negative pressure, and get into through air duct 1021 and handle the incasement 101.

In this embodiment, the air outlet end of the air duct 1021 is arranged towards the bottom of the cavity 1011 and is spaced apart from the liquid level of the liquid medicine by a predetermined distance d. During operation, after the exhaust gas comes out from the air outlet end of the air duct 1021, the exhaust gas directly acts on the liquid level of the liquid medicine under the action of inertia, so that the VOC component in the exhaust gas is in contact with the liquid level of the liquid medicine and chemical reaction occurs.

Further, the distance d between the air duct 1021 and the liquid medicine is larger than or equal to 0.1cm and smaller than or equal to 30cm, and the distance can enable the VOC component in the waste gas to be in contact with the liquid level of the liquid medicine to a large extent, so that the reaction efficiency of the VOC component and the liquid medicine is improved.

Furthermore, the distance d between the air duct 1021 and the liquid medicine is larger than or equal to 0.5cm and smaller than or equal to 5cm, and the distance is favorable for further improving the reaction efficiency of the VOC component and the liquid medicine while ensuring smooth air intake.

In another embodiment, referring to fig. 3, the gas guide device 102 further includes a collecting hood 1023, wherein the collecting hood 1023 is in a trumpet shape, the smaller end of the collecting hood 1023 is connected with the gas inlet end of the gas guide tube 1021, and the larger end of the collecting hood is towards the exhaust source, so as to improve the collecting efficiency of the exhaust gas.

In another embodiment, the gas guide device 102 further includes an adsorption device (not shown in the figure), the adsorption device is disposed in the gas guide tube 1021, an adsorption material is disposed in the adsorption device, and is used for adsorbing dust, odor gas and VOC gas in the exhaust gas, and the exhaust gas is pretreated by the adsorption device, which is beneficial to further improving the treatment efficiency of the exhaust gas.

Alternative adsorbent materials include, but are not limited to: active carbon, silica gel adsorbent and molecular sieve.

In another embodiment, referring to fig. 4, the air guide 102 further includes a second fan 1024, and the second fan 1024 is disposed in the exhaust pipe 103 for assisting in discharging the treated exhaust gas from the cavity 1011. Through setting up second fan 1024, be favorable to improving exhaust-gas treatment efficiency.

In another embodiment, referring to fig. 5, the exhaust gas treatment device further includes a condensing device 104, and the condensing device 104 is disposed in the exhaust pipe 103. Through setting up condensing equipment 104, can make the steam in the waste gas take place to condense and form the water droplet, the water droplet flows back to the bottom of cavity 1011 under the action of gravity to be favorable to reducing the steam content in the emission waste gas.

Alternative condensing units 104 include, but are not limited to: metal net frame, back taper metal block.

Exhaust pipe 103 is fixedly connected with treatment box 101, and its built-in through-hole communicates with cavity 1011, and cavity 1011 communicates with the external world through the through-hole to exhaust pipe 103 discharges the waste gas after handling to the external environment.

Preferably, the exhaust pipe 103 is disposed at the top of the treatment tank 101, and the arrangement can maximize the flowing path of the exhaust gas in the cavity 1011, which is beneficial to increase the contact probability of the VOC components in the exhaust gas and the atomized liquid medicine, thereby further improving the reaction efficiency of the VOC components.

The spraying system 20 comprises a spray head 201 and a circulating device 202, wherein the spray head 201 is arranged in the cavity 1011 and is used for spraying the liquid medicine, so that the atomized liquid medicine is formed in the cavity 1011; the circulating device 202 is used for circularly conveying the liquid medicine to the spray head 201, so that the spray head 201 can continuously spray the liquid medicine.

In the present embodiment, referring to fig. 2, the nozzle 201 is disposed at the top of the cavity 1011, and during the spraying operation, the atomized chemical liquid falls from the top of the cavity 1011 to the bottom of the cavity 1011 by gravity, so that the entire cavity 1011 is filled with the atomized chemical liquid.

In another embodiment, please refer to fig. 4, a plurality of nozzles 201 are disposed in the cavity 1011, and the nozzles 201 are disposed at different positions in the cavity 1011 in a staggered manner, which is beneficial to increasing the number of misty particles in the unit volume of the cavity 1011, thereby increasing the contact probability between the VOC gas molecules and the misty chemical liquid medicine, and further increasing the chemical reaction efficiency of the VOC gas molecules, and on the other hand, preventing the misty chemical liquid medicine close to the exhaust pipe 103 from being discharged out of the cavity 1011, thereby preventing the misty chemical liquid medicine from being unevenly distributed in the cavity 1011.

In another embodiment, please refer to fig. 3, the nozzle 201 is in a shape of a long tube, and the tubular nozzle 201 is provided with a plurality of nozzles, so that the nozzle 201 can spray the atomized liquid medicine in a direction of 360 degrees during the spraying operation, which is helpful to improve the uniform distribution of the atomized liquid medicine in the cavity 1011, thereby improving the chemical reaction efficiency of the VOC gas molecules.

The circulating device 202 includes a circulating pump for circulating the liquid medicine to the spray head 201, so that the liquid medicine can be recycled.

In this embodiment, referring to fig. 2, one end of the circulating pump is connected to the bottom of the cavity 1011, and the other end is connected to the nozzle 201. When the circulating device 202 works, the liquid medicine at the bottom of the cavity 1011 is directly conveyed to the spray head 201 by the circulating pump, and under the action of the spray head 201, the liquid medicine falls back to the bottom of the cavity 1011 in an atomized form, and the circulation is repeated.

In another embodiment, referring to fig. 3, a chemical tank 204 is disposed outside the processing box 101, the chemical tank 204 is lower than the liquid level of the chemical in the cavity 1011, an overflow pipe 203 is disposed between the chemical tank 204 and the cavity 1011, one end of the overflow pipe 203 is connected to the cavity 1011, the other end is disposed above the chemical tank 204, a valve 2031 is disposed on the overflow pipe 203, one end of a circulation pump is connected to the bottom of the chemical tank 204, and the other end is connected to the spray head 201. When the circulating device 202 operates, the liquid medicine in the medicine tank 204 is conveyed to the spray head 201 by the circulating pump, under the action of the spray head 201, the liquid medicine falls back to the bottom of the cavity 1011 in a mist form, when the valve 2031 is opened, the liquid medicine flows into the medicine tank 204 through the overflow pipe 203, and the circulation is repeated. By providing the valve 2031, outside air is prevented from entering the cavity 1011 through the overflow 203.

In another embodiment, referring to fig. 4, a chemical tank 204 is disposed outside the processing box 101, the chemical tank 204 is lower than the liquid level of the chemical in the cavity 1011, an overflow pipe 203 is disposed between the chemical tank 204 and the cavity 1011, one end of the overflow pipe 203 is connected to the cavity 1011, the other end is disposed below the liquid level in the chemical tank 204, the chemical in the chemical tank 204 is used as a sealing material to prevent outside air from entering the cavity 1011 through the overflow pipe 203, one end of a circulating pump is connected to the bottom of the chemical tank 204, and the other end is connected to the spray head 201. When the circulating device 202 operates, the liquid medicine in the medicine tank 204 is conveyed to the spray head 201 by the circulating pump, and under the action of the spray head 201, the liquid medicine falls back to the bottom of the cavity 1011 in a mist form and flows into the medicine tank 204 through the overflow pipe 203, so that the circulation is repeated.

In another embodiment, referring to fig. 6, the exhaust gas treatment device further includes an auxiliary reaction device 105, and the auxiliary reaction device 105 is disposed in the cavity 1011 for promoting the chemical reaction of the VOC gas in the exhaust gas.

Optionally, the auxiliary reaction device 105 is an ultraviolet device, the ultraviolet device can emit high-energy ultraviolet light into the cavity 1011, and the molecular structure of the VOC gas molecules in part of the exhaust gas can be changed under the action of the high-energy ultraviolet light, so that the VOC gas molecules are converted into harmless gas. For example: when the waste gas contains benzene ring, the benzene ring can open C-C bond of benzene ring structure under the action of ultraviolet light, so that the benzene ring can be converted into harmless gas.

Alternatively, the auxiliary reaction device 105 is an ozone device, which can generate ozone in the cavity 1011, wherein the ozone is a strong oxidant, which can oxidize the VOC gas molecules with reducibility into harmless gas.

In another embodiment, referring to fig. 7, the exhaust gas treatment device further includes an automatic chemical feeding device 107, the automatic chemical feeding device 107 includes a liquid level sensor 1061 and a chemical dispensing box 1062, the liquid level sensor 1061 is disposed in the chemical tank 204 for sensing a liquid level in the chemical tank 204, the chemical dispensing box 1062 can be preset to automatically dispose a liquid chemical containing a predetermined component and a predetermined concentration, and when the liquid level sensor 1061 senses that the liquid in the chemical tank 204 is lower than a certain threshold, the automatic chemical feeding device 107 can add the liquid chemical in the chemical dispensing box 1062 into the chemical tank 204, thereby ensuring stable supply of the liquid chemical in the chemical tank 204.

The liquid medicine can generate chemical reaction with the VOC gas in the waste gas, and the VOC gas is converted into harmless gas through the chemical reaction.

Optionally, the chemical reaction comprises a redox reaction and/or an acid-base neutralization reaction.

In this embodiment, the chemical reaction is a redox reaction, specifically, the VOC gas has reducibility, and the chemical solution contains a strong oxidizing agent, and when the VOC gas having reducibility is contacted with the chemical solution having strong oxidizing property, the VOC gas is directly oxidized into harmless substances by the chemical solution. For example: the VOC gas contains benzene rings, when the benzene rings and a strong oxidant generate oxidation-reduction reaction, C-C bonds forming the ring structures of the benzene rings can be broken, and the benzene rings become harmless substances through the change of molecular structures.

Alternatively, strong oxidants include, but are not limited to: hydrogen peroxide, sodium hypochlorite, sodium peroxide and potassium permanganate.

In another embodiment, the chemical reaction is an acid-base neutralization reaction, and specifically, the VOC gas contains an acidic gas, and the chemical solution contains a basic substance, and when the acidic gas contacts the basic chemical solution, the acidic gas and the basic substance undergo the acid-base neutralization reaction, so that harmless substances are generated. For example: VOC gas containing acidic gas NO₂、SO₂。

Alternative alkaline materials include, but are not limited to: sodium hydroxide, potassium hydroxide, sodium calcium hydroxide.

In another embodiment, the chemical reaction includes both oxidation-reduction reaction and acid-base neutralization reaction, specifically, the VOC gas has reducibility, the liquid medicine contains strong oxidant and alkaline substance, when the VOC gas having reducibility contacts the liquid medicine, the VOC gas is oxidized into acid by the strong oxidant in the liquid medicine, and then the acid and the alkaline substance in the liquid medicine undergo acid-base neutralization reaction, so as to generate harmless salt. For example: the VOC gas contains alcohols, when the alcohols and a strong oxidizer have redox reaction, alcoholic hydroxyl is oxidized into carboxyl, and meanwhile, acid carboxyl and alkaline substances in the liquid medicine have acid-base neutralization reaction to generate harmless salt.

Alternative strong oxidizers include, but are not limited to: hydrogen peroxide, sodium hypochlorite, sodium peroxide and potassium permanganate.

The dispersing device 30 is disposed in the cavity 1011 for dispersing the gas and the suspended particles in the cavity 1011.

Specifically, dispersion devices 30 accessible disturbance cavity 1011 interior air dispersion cavity 1011 waste gas and the vaporific liquid medicine granule of suspension, through setting up dispersion devices 30, on the one hand, can make waste gas and vaporific liquid medicine fully contact in cavity 1011, be favorable to improving in the waste gas VOC gaseous with the reaction degree of liquid medicine. On the other hand, through setting up dispersion devices 30, can change the motion track of waste gas and vaporific liquid medicine in cavity 1011, be favorable to prolonging the residence time of VOC gas in cavity 1011 in the waste gas, and then improve in the waste gas VOC gaseous with the reaction degree of liquid medicine. In addition, the tiny water droplet particles in the air in the cavity 1011 condense into large water droplets through mutual collision in the dispersion process, and then fall to the bottom of the cavity 1011 through gravity, thereby being beneficial to further reducing the water vapor content in the discharged waste gas.

Optionally, the dispersing device 30 is a fan, and the fan can generate wind force in the horizontal direction, and the rotation of the fan disturbs the gas and the suspended particles in the cavity 1011, so as to achieve the purpose of dispersing.

Further, dispersion devices 30 are runoff fans, and runoff fans can disturb the air in cavity 1011 in the horizontal direction in the rotation process, so that the waste gas and the foggy liquid medicine in cavity 1011 move in the horizontal direction, and further the dispersion effect is achieved.

Further, referring to fig. 8, the dispersing device 30 is a passive radial flow fan, the rotation of the passive radial flow fan does not need power, and the passive radial flow fan can rotate under the action of the ascending air flow and the sinking mist-like liquid medicine, and during the rotation of the passive radial flow fan, the waste gas and the mist-like liquid medicine in the cavity 1011 are disturbed, so that the waste gas and the mist-like liquid medicine in the cavity 1011 move in the horizontal direction, and the dispersing function is further achieved.

Preferably, the number of the dispersing devices 30 is plural, and the dispersing devices are disposed at different positions in the cavity 1011, which is favorable for promoting the sufficient reaction between the VOC gas in the exhaust gas and the chemical liquid.

The waste gas treatment device comprises a treatment device 10, a spraying system 20 and a dispersion device 30, a cavity 1011 is arranged in a treatment box 101, a spray head 201 of the spraying system 20 is arranged in the cavity 1011, the spray head 201 can spray mist-shaped liquid medicine, the liquid medicine can perform chemical reaction with VOC components in waste gas, the VOC components are converted into harmless substances through the chemical reaction, and the dispersion device 30 is arranged in the cavity 1011. In the operation process, when the VOC gas is treated by chemical reaction in the cavity 1011, on one hand, the waste gas is not physically blocked in the cavity 1011 and can be easily discharged out of the treatment tank 101, so that the energy consumption cost for waste gas treatment can be greatly reduced; on the other hand, the dispersing device 30 disposed in the cavity can disperse the waste gas and the atomized liquid medicine in the cavity 1011, thereby ensuring that the VOC gas and the atomized liquid medicine fully react.

Specific examples are as follows.

Example 1

Referring to fig. 2, the present embodiment provides an exhaust gas treatment device for treating exhaust gas containing VOC components, the exhaust gas treatment device comprising: processing apparatus 10, spraying system 20, and dispersion apparatus 30.

The treatment device 10 comprises a treatment box 101, an air guide device 102 and an exhaust pipe 103, a cavity 1011 is formed in the treatment box 101, the air guide device comprises an air guide tube 1021 and a first fan 1022, an air inlet end of the air guide tube 1021 is arranged above an exhaust gas source, an air outlet end penetrates through a box body of the treatment box 101 and is arranged in the cavity 1011, the distance between the air outlet end and the liquid level of liquid medicine in the cavity 1011 is d, and the exhaust pipe 103 is arranged at the top of the treatment box 101. In this embodiment, the VOC gas contains benzene rings, the chemical solution contains sodium hypochlorite, which is a strong oxidant, and the chemical reaction is redox reaction, and d is 0.1 cm.

The spraying system 20 comprises a spray head 201 and a circulating device 202, the spray head 201 is arranged at the top of the cavity 1011, the circulating device 202 comprises a circulating pump, one end of the circulating pump is connected with the bottom of the cavity 1011, and the other end of the circulating pump is connected with the spray head 201.

The dispersing device 30 is disposed in the cavity 1011, and in this embodiment, the dispersing device 30 is a fan, and the fan can generate wind in a horizontal direction.

In the operation process of the waste gas treatment device, the VOC gas is treated by chemical reaction in the cavity 1011, on one hand, the waste gas is not physically blocked in the cavity 1011 and can be easily discharged out of the treatment box 101, so that the energy consumption cost for waste gas treatment can be greatly reduced; on the other hand, the dispersing device 30 disposed in the cavity can disperse the waste gas and the atomized liquid medicine in the cavity 1011, thereby ensuring that the VOC gas and the atomized liquid medicine fully react.

Example 2

Referring to fig. 3, the present embodiment provides an exhaust gas treatment device for treating exhaust gas containing VOC components, the exhaust gas treatment device comprising: processing apparatus 10, spraying system 20, and dispersion apparatus 30.

The treatment device 10 comprises a treatment box 101, an air guide device 102 and an exhaust pipe 103, a cavity 1011 is formed in the treatment box 101, the air guide device comprises an air guide tube 1021, a first fan 1022 and a collection cover 1023, an air inlet end of the air guide tube 1021 is arranged above an exhaust gas source, an air outlet end penetrates through the box body of the treatment box 101 and is arranged in the cavity 1011, the distance between the air outlet end and the liquid level of liquid medicine in the cavity 1011 is d, and the exhaust pipe 103 is arranged at the top of the treatment box 101. In this embodiment, the VOC gas contains SO₂The liquid medicine contains alkaline substance NaOH, the chemical reaction is acid-base neutralization reaction, and d is 1 cm.

Spray system 20 includes shower nozzle 201, circulating device 202 and medicament pond 204, shower nozzle 201 is rectangular tubulose, be provided with a plurality of spouts on the tubulose shower nozzle 201, 360 degrees spray vaporific liquid medicine in cavity 1011, the outside of handling case 101 is located in the medicament pond 204, the height that highly is less than the interior liquid medicine liquid level of cavity 1011 of medicament pond 204, be provided with overflow pipe 203 between medicament pond 204 and the cavity 1011, the one end and the cavity 1011 of overflow pipe 203 are connected, the other end sets up in the top of medicament pond 204, and be provided with valve 2031 on overflow pipe 203, circulating device 202 includes the circulating pump, the one end of circulating pump is connected with the bottom in medicament pond 204, the other end is connected with shower nozzle 201.

The dispersing device 30 is disposed in the cavity 1011 and the exhaust pipe 103, and in this embodiment, the dispersing device 30 is a radial fan which can generate wind in a horizontal direction.

In addition, through with shower nozzle 201 vertical setting, 360 degrees spraying, can prevent because of the effect of blast pipe 103, to lead to the interior fog-like liquid medicine of cavity 1011 to distribute inhomogeneous.

Example 3

Referring to fig. 4 and 8, the present embodiment provides an exhaust gas treatment device for treating an exhaust gas containing VOC components, the exhaust gas treatment device comprising: processing apparatus 10, spraying system 20, and dispersion apparatus 30.

The treatment device 10 comprises a treatment box 101, an air guide device 102 and an exhaust pipe 103, a cavity 1011 is formed in the treatment box 101, the air guide device comprises an air guide tube 1021, a first fan 1022 and a collection cover 1023, an air inlet end of the air guide tube 1021 is arranged above an exhaust gas source, an air outlet end penetrates through the box body of the treatment box 101 and is arranged in the cavity 1011, the distance between the air outlet end and the liquid level of liquid medicine in the cavity 1011 is d, and the exhaust pipe 103 is arranged at the top of the treatment box 101. In this embodiment, the VOC gas contains ethanol, the liquid medicine contains strong oxidants such as sodium hypochlorite and KOH, the chemical reactions are redox reaction and acid-base neutralization reaction, and d is 10 cm.

Spray system 20 includes shower nozzle 201, circulating device 202 and medicament pond 204, shower nozzle 201 sets up in the top of cavity 1011, the outside of handling case 101 is located in medicament pond 204, the height that highly is less than the interior liquid medicine liquid level of cavity 1011 of medicament pond 204, be provided with overflow pipe 203 between medicament pond 204 and the cavity 1011, the one end and the cavity 1011 of overflow pipe 203 are connected, the other end sets up the liquid level below in medicament pond 204, circulating device 202 includes the circulating pump, the one end of circulating pump is connected with the bottom in medicament pond 204, the other end is connected with shower nozzle 201.

The dispersing device 30 is disposed in the cavity 1011 and the exhaust pipe 103, and in this embodiment, the dispersing device 30 is a passive radial fan, and the passive radial fan can rotate under the action of the ascending air flow and the sinking mist-like liquid medicine.

In addition, by inserting overflow tube 203 below the level of the liquid chemical in chemical reservoir 204, the liquid chemical can act as a sealing material, preventing air from entering cavity 1011 through overflow tube 203.

Example 4

Referring to fig. 5, the present embodiment provides an exhaust gas treatment device, which is similar to the non-exhaust gas treatment device provided in embodiment 3, except that: (1) a second fan 1024 and a condensing device 104 are provided in the exhaust duct 103, and (2) d is 20 cm.

In addition, the second fan 1024 is arranged in the exhaust pipe 103, so that the treatment efficiency of the exhaust gas is improved, and the condensation device 104 is arranged, so that the moisture content in the exhaust gas is reduced.

Example 5

Referring to fig. 6, the present embodiment provides an exhaust gas treatment device, which is similar to the non-exhaust gas treatment device provided in embodiment 3, except that: (1) an auxiliary reaction device 105 is arranged in the cavity 1011, in this embodiment, the auxiliary reaction device 105 is an ozone device; (2) d is 30 cm.

In addition, the auxiliary reaction device 105 is provided in the cavity 1011, which contributes to the improvement of the reaction efficiency of the VOC gas.

Example 6

Referring to fig. 7, the present embodiment provides an exhaust gas treatment device, which is similar to the non-exhaust gas treatment device provided in embodiment 3, except that: (1) spraying system 20 also includes an automatic dosing device 107, and automatic dosing device 107 includes a liquid level sensor 1061 and a dosing tank 1062.

In addition, through setting up automatic reagent feeding device 107, can prevent to lead to the water level in medicament pond 204 to reduce because of liquid medicine evaporation, ensure that the operation of spraying has sufficient liquid medicine and carries out the circulation operation.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An exhaust gas treatment device for treating an exhaust gas containing a VOC component, comprising:

2. The exhaust gas treatment device of claim 1, wherein the gas outlet end is spaced from the liquid level of the liquid medicine by a predetermined distance d, and d is greater than or equal to 0.1cm and less than or equal to 30 cm.

3. The exhaust treatment device of claim 1, wherein the gas guide device further comprises a collecting hood, and the collecting hood is connected with the gas inlet end of the gas guide tube.

4. The waste gas treatment device of claim 1, wherein the spraying system further comprises a chemical tank, the chemical tank is disposed outside the treatment tank, the chemical tank is connected to the cavity through an overflow pipe, the circulating device comprises a circulating pump, one end of the circulating pump is disposed in the chemical tank, and the other end of the circulating pump is connected to the spray head.

5. The exhaust treatment device of claim 4, wherein an automatic dosing device is disposed within the reagent tank.

6. The exhaust gas treatment device of claim 1, wherein the dispersion device is a radial flow fan.

7. The exhaust gas treatment device according to claim 1, wherein a condensing device is provided in the exhaust pipe.

8. The exhaust treatment device of claim 1, wherein an adsorption device is disposed within the airway tube.

9. The exhaust gas treatment device according to any one of claims 1 to 8, wherein an auxiliary reaction device is further provided in the cavity.

10. The exhaust gas treatment device of claim 9, wherein the auxiliary reaction device is an ultraviolet device or an ozone device.