CN111389198B - Waste gas purification treatment equipment - Google Patents

Waste gas purification treatment equipment Download PDF

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CN111389198B
CN111389198B CN202010230930.1A CN202010230930A CN111389198B CN 111389198 B CN111389198 B CN 111389198B CN 202010230930 A CN202010230930 A CN 202010230930A CN 111389198 B CN111389198 B CN 111389198B
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chamber
waste gas
fixedly connected
titanium dioxide
nano titanium
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CN111389198A (en
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张书生
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Weifang brai environmental protection Co.,Ltd.
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Weifang Brai Environmental Protection Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/75—Multi-step processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
    • B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/007—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
    • B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
    • B01J31/38—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24 of titanium, zirconium or hafnium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39—Photocatalytic properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2259/00—Type of treatment
    • B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
    • B01D2259/804—UV light

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  • Materials Engineering (AREA)
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  • Inorganic Chemistry (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
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Abstract

The invention relates to a waste gas purification treatment device which comprises a bottom plate, wherein a humidifying chamber is fixedly connected to the left side of the top of the bottom plate, a treatment chamber is fixedly connected to the right side of the top of the bottom plate, a water inlet pipe is arranged at the top of the bottom plate, the water inlet pipe penetrates through the humidifying chamber and extends into the humidifying chamber, supports are fixedly connected to the outer surfaces of the two ends of the humidifying chamber, and the tops of the two supports are respectively fixedly connected with the top of the inner wall of the humidifying chamber. After the waste gas is sprayed, the waste gas is primarily filtered by the filter material plate, so that harmful organic matters in the waste gas and a catalyst fixed on the filter material plate are decomposed under the catalytic action, the residual particles in the waste gas are adsorbed by the filter screen II, and finally the waste gas is purified and sterilized by the ultraviolet lamp, so that the purpose of purifying the waste gas is achieved.

Description

Waste gas purification treatment equipment
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to waste gas purification treatment equipment.
Background
At present, a large amount of organic solvents, such as aromatic solvents like benzene, toluene, xylene, etc., and ethanol, isopropanol, ethyl acetate, butyl acetate, butanone, dichloroethane, ethyl chloride, hydrocarbons, etc., are generally used in the printing, spraying, etc. industries. The organic solvents are mainly low-boiling point and volatile organic matters and have certain toxicity, and a considerable part of the organic solvents are finally discharged into the atmosphere in the form of organic waste gas, so that the environment is seriously polluted. Therefore, under the background that the current environment protection situation is severe and the national environment protection investment is increased year by year, the organic components in the exhaust gas are recycled by a proper method, so that the pollution to the environment can be reduced, the resource can be recycled, and the device has strong economic value and environmental protection significance, and therefore the device for purifying and treating the exhaust gas is provided.
Disclosure of Invention
The invention aims to provide a waste gas purification treatment device, which achieves the aim of recycling waste gas.
In order to achieve the purpose, the invention provides the following technical scheme:
the waste gas purification treatment equipment comprises a bottom plate, wherein a humidifying chamber is fixedly connected to the left side of the top of the bottom plate, a treatment chamber is fixedly connected to the right side of the top of the bottom plate, a water inlet pipe is arranged at the top of the bottom plate, the water inlet pipe penetrates through the humidifying chamber and extends to the interior of the humidifying chamber, brackets are fixedly connected to the outer surfaces of the two ends of the humidifying chamber, the two tops of the brackets are respectively and fixedly connected with the top of the inner wall of the humidifying chamber, an air inlet is arranged at the center shaft of the left side of the humidifying chamber, a first filter screen is arranged inside the air inlet, a draught fan is arranged on one side of the humidifying chamber, which is close to the treatment chamber, two ends of the draught fan are respectively provided with a communicating pipe, one end of the communicating pipe is connected with the humidifying chamber, the other end of the communicating pipe is connected with the bottom of the treatment chamber, an air blower is fixedly connected to the bottom of the inner wall of the treatment chamber, a filter plate is arranged on the inner wall of the treatment chamber, the filter material board is located the top of air-blower, the treatment chamber inner wall is provided with the filter material board, the filter screen is two in the top of filter material board, the two top left and right sides of filter screen are provided with ultraviolet lamp, two ultraviolet lamp equallys divide do not with treatment chamber inner wall fixed connection, treatment chamber top axis department is provided with the gas outlet, the gas outlet is provided with ooff valve two. The surface of the filter material plate is coated with a nano titanium dioxide catalyst, and the preparation method of the nano titanium dioxide catalyst comprises the following steps:
S1, adding the nano titanium dioxide powder into liquid nitrogen, and ultrasonically stirring to uniformly disperse the nano titanium dioxide powder in the liquid nitrogen until the liquid nitrogen is completely volatilized;
s2, sequentially adding dimethylformamide and a modifier, and carrying out ultrasonic stirring and centrifugal separation to obtain a nano titanium dioxide catalyst; the modifier is formed by mixing a compound I and sodium lignosulfonate according to a mass ratio of 3:1, wherein the mass ratio of the modifier to the nano titanium dioxide powder is 1: 10;
the structural formula of compound I is as follows:
Figure BDA0002429245530000021
wherein n is 9-11.
Preferably, the bottom of the support is provided with five atomizing nozzles, and the five atomizing nozzles are all located on the same horizontal plane.
Preferably, a water storage tank is arranged inside the humidifying chamber, a water outlet pipe is arranged on the left side of the bottom of the humidifying chamber and communicated with the water storage tank, and a first switch valve is arranged on the outer side of the water outlet pipe.
Preferably, a protective cover is arranged on the outer side of the air blower, and a through hole is formed in the top of the protective cover.
Preferably, the lower right corner of the treatment chamber is provided with a one-way air vent.
The invention provides a waste gas purification treatment device. The method has the following beneficial effects:
(1) After the waste gas is sprayed, the waste gas is catalyzed and decomposed by the filter material plate, so that harmful organic matters in the waste gas and a catalyst fixed on the filter material plate are decomposed under the catalytic action, the residual particles in the waste gas are adsorbed by the filter screen II, and finally the waste gas is purified and sterilized by the ultraviolet lamp, so that the purpose of purifying the waste gas is achieved.
(2) According to the invention, by arranging the first filter screen, most of particulate matters in the waste gas can be effectively removed, then the waste gas is sprayed, the particulate matters in the waste gas are adsorbed, and by arranging the atomizing nozzle, the atomizing nozzle can spray the waste gas more uniformly and sufficiently, so that the waste gas purification effect is better, the purification efficiency is higher, and the purification treatment requirements of various waste gases can be met.
(3) The method can fully improve the refining effect and sphericity of the nano titanium dioxide by pretreatment in liquid nitrogen, thereby improving the catalytic efficiency of the nano titanium dioxide. More importantly: the compound I and sodium lignosulfonate can synergistically modify the nano titanium dioxide at a specific ratio (3:1) to synergistically improve the catalytic efficiency of the nano titanium dioxide, so that the degradation capability of the filter plate on harmful organic matters is improved, and the waste gas treatment effect is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a top view of the protective cover of the present invention.
In the figure: 1 bottom plate, 2 humidification rooms, 3 processing chambers, 4 inlet tubes, 5 supports, 6 atomizing spouts, 7 air inlets, 8 filter screens I, 9 outlet pipes, 10 communicating pipes, 11 draught fans, 12 air blowers, 13 protective covers, 14 filter screens, 15 filter screens II, 16 ultraviolet lamps and 17 air outlets.
Detailed Description
Example 1
As shown in fig. 1-2, the present invention provides a technical solution:
a waste gas purification treatment device comprises a bottom plate 1, wherein a humidifying chamber 2 is fixedly connected to the left side of the top of the bottom plate 1, a water storage tank is arranged inside the humidifying chamber 2, a water outlet pipe 9 is arranged on the left side of the bottom of the humidifying chamber 2, the water outlet pipe 9 is communicated with the water storage tank, a first switch valve is arranged on the outer side of the water outlet pipe 9, a treatment chamber 3 is fixedly connected to the right side of the top of the bottom plate 1, a one-way air vent is arranged at the lower right corner of the treatment chamber 3, a water inlet pipe 4 is arranged on the top of the bottom plate 1, the water inlet pipe 4 penetrates through the humidifying chamber 2 and extends into the humidifying chamber 2, supports 5 are fixedly connected to the outer surfaces of two ends of the humidifying chamber 2, atomizing nozzles 6 are arranged at the bottom of each support 5, the number of the atomizing nozzles 6 is five, the five atomizing nozzles 6 are all located on the same horizontal plane, the tops of the two supports 5 are respectively fixedly connected with the top of the inner wall of the humidifying chamber 2, and an air inlet 7 is arranged at the center shaft of the left side of the humidifying chamber 2, the inside of the air inlet 7 is provided with a first filter screen 8, most particles in the waste gas can be effectively removed by arranging the first filter screen 8, the waste gas is sprayed to adsorb the particles in the waste gas, the atomization nozzle 6 is arranged to spray the waste gas more uniformly and sufficiently, the waste gas purification effect is better, the purification efficiency is higher, and the purification treatment requirements of various waste gases can be met, one side of the humidification chamber 2, which is close to the treatment chamber 3, is provided with a draught fan 11, two ends of the draught fan 11 are respectively provided with a communicating pipe 10, one end of the communicating pipe 10 is connected with the humidification chamber 2, the other end of the communicating pipe 10 is connected with the bottom of the treatment chamber 3, the bottom of the inner wall of the treatment chamber 3 is fixedly connected with a blower 12, the outer side of the blower 12 is provided with a protective cover 13, the top of the protective cover 13 is provided with a through hole, the inner wall of the treatment chamber 3 is provided with a filter plate 14, after the waste gas is sprayed, preliminary filtration is carried out through filter plate 14, make harmful organic matter in the waste gas and the catalytic action of catalyst that fixes on filter material plate 14 and be decomposed, pass through two 15 absorption waste gas of filter screen surplus granule, purify the virus killing through ultraviolet lamp 16 at last, thereby reach the purpose of purifying waste gas, make the equipment simple, and convenient for operation, it is effectual to get rid of, filter material plate 14 is located the top of air-blower 12, the 3 inner walls of treatment chamber are provided with filter plate 14, two 15 positions in the top of filter screen filter plate 14, two 15 top left and right sides of filter screen are provided with ultraviolet lamp 16, two ultraviolet lamp 16 divide equally respectively with 3 inner wall fixed connection of treatment chamber, shaft department is provided with gas outlet 17 in treatment chamber 3 top, gas outlet 17 is provided with ooff valve two. The surface of the filter material plate is coated with a nano titanium dioxide catalyst.
The use method of the exhaust gas purification treatment equipment comprises the following steps: the method comprises the following steps:
s1, the water source is connected into the water inlet pipe 4, so that the water is sprayed out from the atomizing nozzles 6, and the water is sprayed out from the atomizing nozzles 360 degrees, so that the atomizing nozzles 6 spray the waste gas more uniformly and sufficiently.
And S2, introducing waste gas, humidifying and spraying the waste gas for 5min, and filtering large-particle dust by a first filter screen 8 before spraying the waste gas.
S3, starting the induced draft fan 11 and the blower 12, and sending the gas in S2 to the bottom of the processing chamber 3.
S4, the waste gas moves from bottom to top in the processing chamber 3, and is primarily filtered by the filter plate 14, so that the harmful organic matters in the waste gas and the catalyst fixed on the filter plate 14 are decomposed under the catalytic action.
S5, the gas primarily filtered by the filter plate 14 moves upward, and the remaining particles in the exhaust gas are adsorbed by the second filter screen 15.
S6, the gas moves upwards continuously, and is purified and sterilized for 6min by the ultraviolet lamp 16.
And S7, discharging the processed gas through a gas outlet.
Example 2
As shown in fig. 1-2, the present invention provides a technical solution:
a waste gas purification treatment device comprises a bottom plate 1, wherein a humidifying chamber 2 is fixedly connected to the left side of the top of the bottom plate 1, a water storage tank is arranged inside the humidifying chamber 2, a water outlet pipe 9 is arranged on the left side of the bottom of the humidifying chamber 2, the water outlet pipe 9 is communicated with the water storage tank, a first switch valve is arranged on the outer side of the water outlet pipe 9, a treatment chamber 3 is fixedly connected to the right side of the top of the bottom plate 1, a one-way air vent is arranged at the lower right corner of the treatment chamber 3, a water inlet pipe 4 is arranged on the top of the bottom plate 1, the water inlet pipe 4 penetrates through the humidifying chamber 2 and extends into the humidifying chamber 2, supports 5 are fixedly connected to the outer surfaces of two ends of the humidifying chamber 2, atomizing nozzles 6 are arranged at the bottom of each support 5, the number of the atomizing nozzles 6 is five, the five atomizing nozzles 6 are all located on the same horizontal plane, the tops of the two supports 5 are respectively fixedly connected with the top of the inner wall of the humidifying chamber 2, and an air inlet 7 is arranged at the center shaft of the left side of the humidifying chamber 2, the inside of the air inlet 7 is provided with a first filter screen 8, most particles in the waste gas can be effectively removed by arranging the first filter screen 8, the waste gas is sprayed to adsorb the particles in the waste gas, the atomization nozzle 6 is arranged to spray the waste gas more uniformly and sufficiently, the waste gas purification effect is better, the purification efficiency is higher, and the purification treatment requirements of various waste gases can be met, one side of the humidification chamber 2, which is close to the treatment chamber 3, is provided with a draught fan 11, two ends of the draught fan 11 are respectively provided with a communicating pipe 10, one end of the communicating pipe 10 is connected with the humidification chamber 2, the other end of the communicating pipe 10 is connected with the bottom of the treatment chamber 3, the bottom of the inner wall of the treatment chamber 3 is fixedly connected with a blower 12, the outer side of the blower 12 is provided with a protective cover 13, the top of the protective cover 13 is provided with a through hole, the inner wall of the treatment chamber 3 is provided with a filter plate 14, after the waste gas is sprayed, preliminary filtration is carried out through filter plate 14, make harmful organic matter in the waste gas and the catalytic action of catalyst that fixes on filter material plate 14 and be decomposed, pass through two 15 absorption waste gas of filter screen surplus granule, purify the virus killing through ultraviolet lamp 16 at last, thereby reach the purpose of purifying waste gas, make the equipment simple, and convenient for operation, it is effectual to get rid of, filter material plate 14 is located the top of air-blower 12, the 3 inner walls of treatment chamber are provided with filter plate 14, two 15 positions in the top of filter screen filter plate 14, two 15 top left and right sides of filter screen are provided with ultraviolet lamp 16, two ultraviolet lamp 16 divide equally respectively with 3 inner wall fixed connection of treatment chamber, shaft department is provided with gas outlet 17 in treatment chamber 3 top, gas outlet 17 is provided with ooff valve two. The surface of the filter material plate is coated with a nano titanium dioxide catalyst.
The use method of the exhaust gas purification treatment equipment comprises the following steps: the method comprises the following steps:
s1, the water source is connected into the water inlet pipe 4, so that the water is sprayed out from the atomizing nozzles 6, and the water is sprayed out from the atomizing nozzles 360 degrees, so that the atomizing nozzles 6 spray the waste gas more uniformly and sufficiently.
And S2, introducing waste gas, humidifying and spraying the waste gas for 7min, and filtering large-particle dust by a first filter screen 8 before spraying the waste gas.
S3, starting the induced draft fan 11 and the blower 12, and sending the gas in S2 to the bottom of the processing chamber 3.
S4, the waste gas moves from bottom to top in the processing chamber 3, and is primarily filtered by the filter plate 14, so that the harmful organic matters in the waste gas and the catalyst fixed on the filter plate 14 are decomposed under the catalytic action.
S5, the gas primarily filtered by the filter plate 14 moves upward, and the remaining particles in the exhaust gas are adsorbed by the second filter screen 15.
S6, the gas moves upwards continuously, and is purified and sterilized for 8min by the ultraviolet lamp 16.
And S7, discharging the processed gas through a gas outlet.
Example 3
As shown in fig. 1-2, the present invention provides a technical solution:
a waste gas purification treatment device comprises a bottom plate 1, wherein a humidifying chamber 2 is fixedly connected to the left side of the top of the bottom plate 1, a water storage tank is arranged inside the humidifying chamber 2, a water outlet pipe 9 is arranged on the left side of the bottom of the humidifying chamber 2, the water outlet pipe 9 is communicated with the water storage tank, a first switch valve is arranged on the outer side of the water outlet pipe 9, a treatment chamber 3 is fixedly connected to the right side of the top of the bottom plate 1, a one-way air vent is arranged at the lower right corner of the treatment chamber 3, a water inlet pipe 4 is arranged on the top of the bottom plate 1, the water inlet pipe 4 penetrates through the humidifying chamber 2 and extends into the humidifying chamber 2, supports 5 are fixedly connected to the outer surfaces of two ends of the humidifying chamber 2, atomizing nozzles 6 are arranged at the bottom of each support 5, the number of the atomizing nozzles 6 is five, the five atomizing nozzles 6 are all located on the same horizontal plane, the tops of the two supports 5 are respectively fixedly connected with the top of the inner wall of the humidifying chamber 2, and an air inlet 7 is arranged at the center shaft of the left side of the humidifying chamber 2, the inside of the air inlet 7 is provided with a first filter screen 8, most particles in the waste gas can be effectively removed by arranging the first filter screen 8, the waste gas is sprayed to adsorb the particles in the waste gas, the atomization nozzle 6 is arranged to spray the waste gas more uniformly and sufficiently, the waste gas purification effect is better, the purification efficiency is higher, and the purification treatment requirements of various waste gases can be met, one side of the humidification chamber 2, which is close to the treatment chamber 3, is provided with a draught fan 11, two ends of the draught fan 11 are respectively provided with a communicating pipe 10, one end of the communicating pipe 10 is connected with the humidification chamber 2, the other end of the communicating pipe 10 is connected with the bottom of the treatment chamber 3, the bottom of the inner wall of the treatment chamber 3 is fixedly connected with a blower 12, the outer side of the blower 12 is provided with a protective cover 13, the top of the protective cover 13 is provided with a through hole, the inner wall of the treatment chamber 3 is provided with a filter plate 14, after the waste gas is sprayed, preliminary filtration is carried out through filter plate 14, make harmful organic matter in the waste gas and the catalytic action of catalyst that fixes on filter material plate 14 and be decomposed, pass through two 15 absorption waste gas of filter screen surplus granule, purify the virus killing through ultraviolet lamp 16 at last, thereby reach the purpose of purifying waste gas, make the equipment simple, and convenient for operation, it is effectual to get rid of, filter material plate 14 is located the top of air-blower 12, the 3 inner walls of treatment chamber are provided with filter plate 14, two 15 positions in the top of filter screen filter plate 14, two 15 top left and right sides of filter screen are provided with ultraviolet lamp 16, two ultraviolet lamp 16 divide equally respectively with 3 inner wall fixed connection of treatment chamber, shaft department is provided with gas outlet 17 in treatment chamber 3 top, gas outlet 17 is provided with ooff valve two. The surface of the filter material plate is coated with a nano titanium dioxide catalyst.
The use method of the exhaust gas purification treatment equipment comprises the following steps: the method comprises the following steps:
s1, the water source is connected into the water inlet pipe 4, so that the water is sprayed out from the atomizing nozzles 6, and the water is sprayed out from the atomizing nozzles 360 degrees, so that the atomizing nozzles 6 spray the waste gas more uniformly and sufficiently.
And S2, introducing waste gas, humidifying and spraying the waste gas for 10min, and filtering large-particle dust by a first filter screen 8 before spraying the waste gas.
S3, starting the induced draft fan 11 and the blower 12, and sending the gas in S2 to the bottom of the processing chamber 3.
S4, the waste gas moves from bottom to top in the processing chamber 3, and is primarily filtered by the filter plate 14, so that the harmful organic matters in the waste gas and the catalyst fixed on the filter plate 14 are decomposed under the catalytic action.
S5, the gas primarily filtered by the filter plate 14 moves upward, and the remaining particles in the exhaust gas are adsorbed by the second filter screen 15.
S6, the gas moves upwards continuously, and is purified and sterilized for 10min by the ultraviolet lamp 16.
And S7, discharging the processed gas through a gas outlet.
Example 4
The preparation method of the nano titanium dioxide catalyst in the examples 1 to 3 is as follows:
s1, adding the nano titanium dioxide powder into liquid nitrogen, and ultrasonically stirring to uniformly disperse the nano titanium dioxide powder in the liquid nitrogen until the liquid nitrogen is completely volatilized;
S2, sequentially adding dimethylformamide and a modifier, and carrying out ultrasonic stirring and centrifugal separation to obtain a nano titanium dioxide catalyst; the modifier is formed by mixing a compound I and sodium lignosulfonate according to a mass ratio of 3:1, wherein the mass ratio of the modifier to the nano titanium dioxide powder is 1: 10;
the structural formula of compound I is as follows:
Figure BDA0002429245530000081
wherein n is 10.
Comparative examples 1 to 6
Comparative examples 1 to 6 only changed the composition of the modifier in example 4, and the others were completely the same as in example 4.
And (3) detecting the photocatalytic effect: accurately measuring a certain amount of methylene blue solution, adding a catalyst, fully stirring and adsorbing in a dark place, irradiating by using a xenon lamp, sampling at intervals, filtering by using a water-based filter membrane, taking a filtrate, measuring the absorbance of the solution by using an ultraviolet spectrophotometer, and taking the degradation rate (3h) of the methylene blue as an evaluation index.
Figure BDA0002429245530000082
Figure BDA0002429245530000091
From the above table, the pretreatment in liquid nitrogen can fully improve the refining effect and sphericity of the nano titanium dioxide, thereby improving the catalytic efficiency of the nano titanium dioxide. More importantly: the compound I and sodium lignosulfonate can synergistically modify the nano titanium dioxide at a specific ratio (3:1) to synergistically improve the catalytic efficiency of the nano titanium dioxide, so that the degradation capability of the filter plate on harmful organic matters is improved, and the waste gas treatment effect is improved.
In conclusion, after the waste gas is sprayed, the waste gas is primarily filtered through the filter plate 14, harmful organic matters in the waste gas and a catalyst fixed on the filter plate 14 are decomposed under the catalytic action of the catalyst, the residual particles in the waste gas are adsorbed through the filter screen II 15, and finally the waste gas is purified and sterilized through the ultraviolet lamp 16, so that the purpose of purifying the waste gas is achieved, the equipment is simple, convenient to operate and good in removing effect, most of particles in the waste gas can be effectively removed through the filter screen I8, the waste gas is sprayed again, the particles in the waste gas are adsorbed, and the waste gas is sprayed more uniformly and sufficiently through the atomization nozzle 6, so that the waste gas purifying effect is better, the purifying efficiency is higher, and the purifying treatment requirements of various waste gases can be met.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. An exhaust gas purification treatment apparatus comprising a base plate (1), characterized in that: the improved humidifier is characterized in that a humidifier chamber (2) is fixedly connected to the left side of the top of the base plate (1), a treatment chamber (3) is fixedly connected to the right side of the top of the base plate (1), a water inlet pipe (4) is arranged at the top of the base plate (1), the water inlet pipe (4) penetrates through the humidifier chamber (2) and extends to the interior of the humidifier chamber (2), a support (5) is fixedly connected to the outer surface of each of the two ends of the humidifier chamber (2), the top of the support (5) is uniformly connected with the inner wall top of the humidifier chamber (2), an air inlet (7) is arranged at the center shaft in the left side of the humidifier chamber (2), a first filter screen (8) is arranged inside the air inlet (7), an induced draft fan (11) is arranged on one side, close to the humidifier chamber (2) and the treatment chamber (3), communicating pipes (10) are arranged at the two ends of the induced draft fan (11), one end of each communicating pipe (10) is connected with the humidifier chamber (2), the other end of the communicating pipe (10) is connected with the bottom of the processing chamber (3), the bottom of the inner wall of the processing chamber (3) is fixedly connected with an air blower (12), a filter plate (14) is arranged on the inner wall of the processing chamber (3), the filter plate (14) is positioned above the air blower (12), the filter plate (14) is arranged on the inner wall of the processing chamber (3), the second filter screen (15) is positioned above the filter plate (14), ultraviolet lamps (16) are arranged on the left side and the right side of the top of the second filter screen (15), the two ultraviolet lamps (16) are respectively and fixedly connected with the inner wall of the processing chamber (3), an air outlet (17) is arranged at the middle shaft of the top of the processing chamber (3), and a second switch valve is arranged on the air outlet (17);
The surface of the filter material plate is coated with a nano titanium dioxide catalyst, and the preparation method of the nano titanium dioxide catalyst comprises the following steps: s1, adding the nano titanium dioxide powder into liquid nitrogen, and ultrasonically stirring to uniformly disperse the nano titanium dioxide powder in the liquid nitrogen until the liquid nitrogen is completely volatilized; s2, sequentially adding dimethylformamide and a modifier, and carrying out ultrasonic stirring and centrifugal separation to obtain a nano titanium dioxide catalyst; the modifier is formed by mixing a compound I and sodium lignosulfonate according to a mass ratio of 3:1, wherein the mass ratio of the modifier to the nano titanium dioxide powder is 1: 10; the structural formula of compound I is as follows:
Figure FDA0003398756630000011
wherein n is 9-11.
2. An exhaust gas purification processing apparatus according to claim 1, characterized in that: the atomizing nozzle is characterized in that atomizing nozzles (6) are arranged at the bottom of the support (5), the number of the atomizing nozzles (6) is five, and the five atomizing nozzles (6) are all located on the same horizontal plane.
3. An exhaust gas purification processing apparatus according to claim 1, characterized in that: the improved humidifier is characterized in that a water storage tank is arranged inside the humidifying chamber (2), a water outlet pipe (9) is arranged on the left side of the bottom of the humidifying chamber (2), the water outlet pipe (9) is communicated with the water storage tank, and a first switch valve is arranged on the outer side of the water outlet pipe (9).
4. An exhaust gas purification processing apparatus according to claim 1, characterized in that: the air blower is characterized in that a protective cover (13) is arranged on the outer side of the air blower (12), and a through hole is formed in the top of the protective cover (13).
5. An exhaust gas purification processing apparatus according to claim 1, characterized in that: the lower right corner of the treatment chamber (3) is provided with a one-way air hole.
CN202010230930.1A 2020-03-27 2020-03-27 Waste gas purification treatment equipment Active CN111389198B (en)

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