CN210613373U - Adsorption-photocatalysis composite device for VOCs treatment - Google Patents

Abstract

The application discloses an adsorption-photocatalysis composite device for VOCs treatment, which comprises a shell, wherein the left end of the shell is provided with a sample inlet connected with an air inlet pipe, the upper end of the shell is provided with a sample outlet connected with an exhaust pipe, and the air inlet pipe is connected with a fan module; the casing is pretreatment section and main reaction section by introduction port to appearance mouth direction in proper order, sets up in the pretreatment section and sprays module and sewage recovery unit, sets up spiral helicine absorption-catalysis module and an ultraviolet lamp module in the main reaction section, and in this novel device of application and technology, the suspended solid and the particulate matter in the waste gas can be got rid of to the water pretreatment of spraying, and in addition, the helicine effect that can guide the air current has improved absorption and photocatalysis efficiency, has improved the purifying effect of waste gas.

Description

Adsorption-photocatalysis composite device for VOCs treatment

Technical Field

The application relates to a VOCs waste gas treatment device and a method, in particular to an adsorption-photocatalysis composite device for VOCs treatment.

Background

Volatile Organic Compounds (VOCs) are important pollutants in the air at present, mainly come from industries such as petrifaction, organic chemical industry, synthetic materials, chemical raw material manufacturing, plastic product manufacturing, equipment manufacturing and coating, packaging and printing, and are various in types, and can be divided into alkanes, aromatic hydrocarbons, alkenes, halocarbons, esters, aldehydes, ketones and the like, including benzene series, organic chlorides, freon series, organic ketones, amines, alcohols, ethers, esters, acids, petroleum hydrocarbon compounds and the like. VOCs (particularly benzene series such as benzene, xylene and the like) are key precursors for forming ozone and PM2.5, are also important sources of dust haze and photochemical smog pollution and cause great harm to human bodies and the environment, a newly revised air pollution prevention and control law of the people's republic of China has listed the VOCs as key prevention and control pollutants, and the national ministry of environmental protection intends to bring the VOCs into the total emission reduction index of the environment protection ' thirteen-five ' plan.

In recent years, the treatment and disposal of VOCs have become a research focus, and at present, the common methods for treating VOCs mainly include an adsorbent adsorption method, a catalytic oxidation method, an electron pulse method, and the like. The treatment method for adsorbing VOCs by using the molecular sieve is one of the most common methods, but the adsorption method is independently adopted, so that after the adsorption saturation of the adsorbent, the subsequent treatment of the VOCs is seriously insufficient, a pretreatment means is lacked, a catalytic device also has the defects of low energy utilization rate of a light source, insufficient utilization of a catalyst, difficult recovery and poor treatment efficiency; the device is not easy to disassemble, the components are difficult to replace, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an efficient VOCs processing apparatus for solving the above-mentioned technical problem that current VOCs handled the existence, the treatment effect is good, and the subassembly is easily changed, and system architecture is reasonable.

An adsorption-photocatalysis composite device for VOCs treatment comprises a shell, wherein the left end of the shell is provided with a sample inlet connected with an air inlet pipe, the upper end of the shell is provided with a sample outlet connected with an exhaust pipe, and the air inlet pipe is connected with a fan module; the shell is internally provided with a pretreatment section and a main reaction section in sequence from the sample inlet to the sample outlet, the pretreatment section is internally provided with a spraying module and a sewage recovery device, and the main reaction section is internally provided with a spiral adsorption-catalysis module and an ultraviolet lamp module.

Further, what pack among the main reaction section photocatalytic unit is high silicon molecular sieve, makes it cover the whole cross-section of air duct, makes its surface and VOCs waste gas contact more abundant, and in addition, what add sprays preprocessing device compares with filtering preprocessing device, and the water sprays and can get rid of particulate matter, improves waste gas humidity, is favorable to later stage photocatalytic treatment.

Furthermore, the ultraviolet lamp module and the adsorption-photocatalysis module in the main reaction section are installed in the main reaction section in a drawer mode, and the assembly is more convenient to disassemble and replace.

Furthermore, a honeycomb quartz baffle and a cavity with a fixed size and provided with a sealing rubber ring are arranged in the spiral air duct in the adsorption-photocatalysis module, so that the loss of the filler is effectively prevented, and the later-stage filler is convenient to recover and update.

Further, the ultraviolet lamp is installed in a direction parallel to the gas flow direction.

Furthermore, a plurality of gas outlets with downward openings are uniformly formed in the circular gas guide tube connected with the sample inlet in the pretreatment section, so that gas in the device is more uniform and water backflow is prevented.

Furthermore, three spray heads are uniformly arranged on a circular water guide pipe connected with a water pump in the pretreatment section, and the spray angle of each spray head is 120 degrees, so that the spray is more uniform.

Furthermore, in order to increase the reaction efficiency of the adsorption-catalysis device, the adsorption-photocatalysis composite devices with the number of 2 or more can be connected in series or in parallel or in a series-parallel combination mode to form an adsorption-photocatalysis reaction group.

Furthermore, the series, parallel or series-parallel work of more than 2 adsorption-photocatalysis composite devices or adsorption-photocatalysis reaction groups can be controlled by opening and closing valves.

The utility model has the advantages that:

(1) the combination mode of the ultraviolet lamp module and the photocatalysis module greatly improves the energy utilization rate of a light source; various products can be generated in the VOCs waste gas treatment process and are adhered to the surface of the device, the device needs to be cleaned regularly, the ultraviolet lamp module and the adsorption-photocatalysis module are installed in a drawer mode, and the assembly is more convenient to disassemble and replace.

(2) This novel main reaction section's of application spiral air duct plays the effect of guide air current, mutually supports with the filler of packing, makes filler and waste gas fully reflect, improves the treatment effeciency.

(3) The spraying device is adopted as pretreatment, the treatment efficiency is improved, and a large number of researches show that the degradation efficiency of organic matters in a photocatalytic system can be improved by increasing the humidity.

(4) The reaction group is formed by the serial connection, parallel connection or serial and parallel connection of the device, so that the treatment efficiency is improved.

(5) The device adopts the combination of adsorption and photocatalysis, and effectively solves the problem of subsequent treatment after the adsorption saturation of the adsorbent.

Drawings

FIG. 1 is a front view of the novel application

FIG. 2 is a front view of the spiral gas-guide tube of the novel main reaction section of the application

FIG. 3 is a front view of the honeycomb panel disposed in FIG. 2

FIG. 4 is a schematic illustration of multiple adsorption-catalytic device connections

The reference numerals shown in the figures are as follows:

1-shell 2-air inlet sampling port 3-air inlet pipe

4-sample inlet 5-gas outlet 6-ultraviolet lamp

7-honeycomb quartz baffle 8-filler 9-quartz sleeve

10-spiral air duct 11-spray head 12-water pump

13-water outlet pipe 14-honeycomb baffle 15-sealing rubber ring

16-hole 17-valve

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The adsorption-photocatalysis composite device for treating VOCs (volatile organic compounds) as shown in figures 1 to 4 comprises a pretreatment module, an ultraviolet lamp module and an adsorption-photocatalysis module, wherein the pretreatment module comprises an air inlet pipe 3 and three sample inlets 4 with downward openings, a circular water guide pipe connected with a water pump 12 is uniformly provided with three spray heads 11, the spray angle of each spray head is 120 degrees, a water outlet pipe 13 for recycling sewage at the bottom is used for the ultraviolet lamp module in a main reaction section and comprises a quartz sleeve 9 and an ultraviolet lamp 6, the adsorption-photocatalysis module comprises a spiral air guide pipe 10 and an air outlet 5, a honeycomb quartz baffle 7 with a certain interval is arranged in the spiral air guide pipe 10, a filler 8 is filled between the baffles from a hole 16 to the interval, and the baffles are sealed by a sealing rubber ring 15. The lining of the shell 1 of the main reaction section is a mirror surface, and part of light energy lost by the ultraviolet lamp module can be reflected to the spiral air guide tube, so that the light energy utilization rate is improved.

When the device works, VOCs waste gas is introduced into the gas inlet pipe 3 by the fan to enter the pretreatment module for spraying pretreatment, the treated gas enters the spiral gas guide pipe 10 to be adsorbed and photocatalytic by the filler 8, and clean air is discharged from the gas outlet 5.

As shown in fig. 4. In order to improve the photocatalytic efficiency, 2 or more adsorption-photocatalytic composite devices can be connected in series or in parallel or in a series-parallel combination mode to form an adsorption-photocatalytic reaction group.

The foregoing is directed to the preferred embodiment of the present invention, and any person skilled in the art may make modifications and changes to the equivalent embodiment using the teachings set forth above. Any simple modification, change or remodel carried out on the above embodiments according to the technical scheme of the utility model, which is not separated from the technical scheme of the utility model, all belong to the protection scope of the technical scheme of the utility model.

Claims (7)

1. An adsorption-photocatalysis composite device for VOCs treatment is characterized by comprising a shell, wherein the left end of the shell is provided with a sample inlet connected with an air inlet pipe, the upper end of the shell is provided with a sample outlet connected with an exhaust pipe, and the air inlet pipe is connected with a fan module; the shell is internally provided with a pretreatment section and a main reaction section in sequence from the sample inlet to the sample outlet, the pretreatment section is internally provided with a spraying module and a sewage recovery module, and the main reaction section is internally provided with a spiral adsorption-catalysis module and an ultraviolet lamp module.

2. The combined adsorption-photocatalytic device for treatment of VOCs of claim 1, wherein the uv lamp module and the spiral adsorption-catalytic module in the main reaction section are installed in the reaction section in a drawer type.

3. The adsorption-photocatalytic composite device for treatment of VOCs according to claim 1, wherein the spray module comprises:

a plurality of spray heads arranged below the circular guide pipe at the top of the pretreatment section;

the sewage recovery device is arranged below the spray head;

and the water pump is arranged outside the adsorption-photocatalysis composite device for treating the VOCs.

4. The combined adsorption-photocatalytic device for treatment of VOCs of claim 1, wherein the adsorption-catalytic module comprises:

a helical gas-guide tube in sliding fit with the interior of the main reaction section;

a plurality of honeycomb quartz plates arranged at the fixed positions of the spiral gas guide pipes;

a plurality of fixed big and small holes arranged on the spiral air duct and provided with a sealing rubber ring.

5. The adsorption-photocatalytic composite device for treatment of VOCs of claim 1, wherein the uv lamp module comprises:

the quartz sleeve is in sliding fit with the inside of the main reaction section, and the quartz sleeve is coaxial with the reactor;

and the ultraviolet lamp is arranged in the quartz sleeve which is in sliding fit with the inside of the main reaction section.

6. The combined adsorbent-photocatalytic device for treating VOCs of claim 5, wherein the tube is a spiral ascending tube coaxial with the quartz sleeve.

7. The combined adsorption-photocatalytic device for treating VOCs according to claim 1, wherein the helical adsorption-catalytic module and the uv lamp module in the main reaction section can be connected in series by 2 or more than 2 to improve the efficiency of removing VOCs.

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