CN108043188B - Organic waste gas purification process for adhesive products - Google Patents
Organic waste gas purification process for adhesive products Download PDFInfo
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- CN108043188B CN108043188B CN201711185987.9A CN201711185987A CN108043188B CN 108043188 B CN108043188 B CN 108043188B CN 201711185987 A CN201711185987 A CN 201711185987A CN 108043188 B CN108043188 B CN 108043188B
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- 239000007789 gas Substances 0.000 title claims abstract description 71
- 239000000853 adhesive Substances 0.000 title claims abstract description 47
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 47
- 239000010815 organic waste Substances 0.000 title claims abstract description 42
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 86
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000002912 waste gas Substances 0.000 claims abstract description 36
- 239000003463 adsorbent Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 230000004888 barrier function Effects 0.000 claims abstract description 17
- 238000011049 filling Methods 0.000 claims abstract description 16
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 35
- 229920000877 Melamine resin Polymers 0.000 claims description 26
- 239000000243 solution Substances 0.000 claims description 26
- 238000002156 mixing Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- 235000013358 Solanum torvum Nutrition 0.000 claims description 9
- 240000002072 Solanum torvum Species 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 230000035515 penetration Effects 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000012459 cleaning agent Substances 0.000 claims 6
- 230000000694 effects Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 5
- 239000002957 persistent organic pollutant Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- JLTDJTHDQAWBAV-UHFFFAOYSA-N N,N-dimethylaniline Chemical compound CN(C)C1=CC=CC=C1 JLTDJTHDQAWBAV-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229960001701 chloroform Drugs 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 150000002605 large molecules Chemical class 0.000 description 1
- 229940018564 m-phenylenediamine Drugs 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
- B01D46/681—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements by scrapers, brushes or the like
-
- 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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- 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
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to the technical field of waste gas treatment. The invention discloses an organic waste gas purification process for adhesive products, which comprises the steps of waste gas filtration, mixed atomized solution, a permeable reactive barrier reaction, post-treatment and the like, wherein the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reaction layer, a filling medium of the adsorbent layer is activated carbon, and a filling medium of the reaction layer is modified micron zero-valent iron particles. The organic waste gas purification process for the adhesive product has better treatment effect and better treatment efficiency; the treatment cost is low, and the production economic burden is reduced.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to an organic waste gas purification process for adhesive products.
Background
Toluene, ethyl acetate, solvent gasoline and the like are used as solvents in the production process of many adhesive product enterprises. A large amount of waste gas containing toluene, ethyl acetate, solvent gasoline and the like is discharged in the drying process of the drying box, so that solvent loss is caused, and the environment is polluted. The volatile organic compounds present in different adhesives vary widely, such as the organic solvents in solvent-based adhesives; free formaldehyde in trialdehyde glue (phenol formaldehyde, urea formaldehyde, melamine formaldehyde); styrene in unsaturated polyester adhesives; unreacted monomers in the acrylate emulsion adhesive; methyl methacrylate in the modified acrylate fast-curing structural adhesive; polyisocyanates in polyurethane adhesives; 4115 methanol in building glue, etc. The volatile organic substances in the adhesive are mainly benzene, toluene, formaldehyde, methanol, styrene, trichloromethane, carbon tetrachloride, 1, 2-dichloroethane, toluene diisocyanate, m-phenylenediamine, tricresyl phosphate, ethylenediamine, dimethylaniline and the like. Air pollution of adhesive factories is always in the spotlight, and peculiar smell and waste gas pollution generated by the adhesive seriously influences the life health of people, especially the emission of waste gas. In the age of rapid industrial development, the industry brings remarkable economic benefits to people, and meanwhile, the pollution problem is also concerned.
Disclosure of Invention
In order to solve the problems, the invention provides the organic waste gas purification process of the adhesive product, which improves the technical efficiency of waste gas treatment by several times and has good treatment effect.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an organic waste gas purification process for adhesive products comprises the following steps:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized hydrogen peroxide aqueous solution into the filtered organic waste gas of the adhesive product to prepare mixed gas;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid;
d) and (3) post-treatment: discharging the treated mixture after passing through water.
The whole waste gas purification process comprises four parts, namely filtering, atomized solution mixing, permeable reactive barrier reaction and post-treatment. In the first step, a bag type dust collector is adopted to remove solid particles in the waste gas, firstly, the solid particles are removed for impurity removal, and secondly, the normal operation of subsequent treatment is ensured and the treatment pressure in the subsequent process is relieved. The second step is to prepare for the next step, the atomized aqueous hydrogen peroxide solution is mixed into the waste gas, the hydrogen peroxide has strong oxidizing property, the organic waste in the waste gas can be oxidized, and the water can participate in the subsequent reaction in the permeation reaction grid, in particular to enable the zero-valent iron particles coated by the water-soluble high polymer melamine formaldehyde resin to take effect. And thirdly, carrying out a reaction on a permeable reaction grid, wherein the permeable reaction grid is divided into two layers, the first layer is an adsorption layer under the irradiation of ultraviolet light, an adsorbent is activated carbon, the waste gas is adsorbed firstly after entering the permeable reaction grid, and then starts to react and decompose under the action of hydrogen peroxide and the ultraviolet light, and the second layer is a reaction layer taking zero-valent iron as a medium, so that the organic waste in the waste gas is further degraded by utilizing the strong reducibility of the zero-valent iron. The fourth step is a post-treatment process, i.e. passing the exhaust gas treated in the above step through water, in order to remove solid particles and some residual organic waste carried over from the exhaust gas by the above treatment.
Preferably, in step b, the aqueous hydrogen peroxide solution is 5 to 8wt% aqueous hydrogen peroxide solution.
Preferably, in the step b, the volume of the atomized aqueous hydrogen peroxide solution is 0.2 to 0.5 times of the volume of the organic waste gas of the adhesive product.
Since the waste to be treated is a gas, when water and hydrogen peroxide are added thereto, it is necessary to atomize the aqueous hydrogen peroxide solution and introduce the atomized solution into the waste gas, where the volume of the aqueous hydrogen peroxide solution after atomization means that the volume of the aqueous hydrogen peroxide solution obtained by atomization is not the volume of the aqueous hydrogen peroxide solution before atomization.
Preferably, the flow rate of the mixed gas in the step c is 1/10-1/8 of the flow rate of the organic waste gas of the adhesive products in the step b.
When the permeable reactive barrier is used for treatment, the gas passing rate is reduced, and the treatment effect is enhanced.
Preferably, in step c, the osmotic reaction grid is divided into two layers, the first layer being an adsorbent layer and the second layer being a reaction layer.
Preferably, the filling medium of the adsorbent layer is activated carbon, and is irradiated with ultraviolet light when used.
Preferably, the filling medium of the reaction layer is modified micron zero-valent iron particles.
The adsorption layer adsorbs gas and primarily treats organic waste in the waste gas under the action of ultraviolet rays and hydrogen peroxide, and the reaction layer further treats the organic waste in the waste gas by utilizing zero-valent iron particles.
Preferably, the modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.2-0.6 time of the weight of the micron zero-valent iron particles in deionized water which is 2-6 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after dissolving, uniformly mixing, then adding diatomite which is 1-2 times of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles.
The zero-valent iron is a typical permeable reactive barrier active material, has very high reduction potential up to-440 mV, and is used as a reducing agent in the permeable reactive barrier of the invention to reduce and degrade organic pollutants in exhaust gas, so that the organic pollutants with large molecules are decomposed into organic matters with small molecules. Since the zero-valent iron is a material with extremely high reducibility, and is easily oxidized and then loses efficacy when contacting with the outside after being prepared, the zero-valent iron needs to be coated to prevent the zero-valent iron from contacting with the outside, particularly air; the water-soluble high polymer melamine formaldehyde resin is adopted to coat the zero-valent iron particles, so that the zero-valent iron particles can not contact with the outside and cannot lose efficacy when not used, the water-soluble high polymer melamine formaldehyde resin can participate in the reaction when used for treating waste gas, and a certain amount of atomized water solution is mixed into the waste gas so that the coated zero-valent iron can take effect when used for treating the waste gas. In addition, the diatomite and the zero-valent iron are compounded, so that firstly, the zero-valent iron particles can be better fixed, and secondly, the diatomite and the zero-valent iron particles can also be used as an adsorbent for degrading and reducing organic pollutants to adsorb the degraded organic pollutants.
Preferably, the particle size of the micron zero-valent iron particles is 50-75 μm.
Preferably, the spherical filter tank in the step a consists of a spherical filter, an air inlet pipe, a clean air outlet pipe and a dirty air outlet pipe; the spherical filter consists of an upper hemispherical filter and a lower hemispherical filter, and the upper hemispherical filter and the lower hemispherical filter are fixed together through a detachable fixing device; the top of the upper hemispherical filter is provided with an air pipe connecting port, a circular filter plate, a filter plate bracket and a filter plate cleaner are arranged in the upper hemispherical filter, the filter plate is arranged in the filter plate bracket, the height of the filter plate bracket is greater than the thickness of the filter plate, the filter plate cleaner consists of a support, filter plate brushes, blades and a rotating shaft, the rotating shaft is fixed on the support, the blades are arranged in the middle of the rotating shaft, the number of the blades is at least 3, the blades are uniformly distributed, and the filter plate brushes are horizontally arranged and one section of each filter; the internal structure of the lower hemispherical filter is the same as that of the upper hemispherical filter, and the internal structure of the lower hemispherical filter is symmetrical to that of the upper hemispherical filter along the horizontal joint surface; the air inlet pipe is arranged at the top of the spherical filter, the clean air outlet pipe is arranged in the middle of the spherical filter, and the dirty air outlet pipe is arranged below the spherical filter; the air inlet pipe and the dirty air outlet pipe are connected with the spherical filter in a sliding way, and the clean air outlet pipe is connected with the spherical filter in a rotating way.
In a common filter/filtering device, after a certain period of time, the filtering medium needs to be replaced or cleaned, so as to ensure that the filtering medium is blocked by particles deposited on the surface of the filtering medium after filtering, thereby reducing the filtering efficiency. The spherical filter has the function of self-cleaning filter media; the invention mainly comprises a spherical filter, wherein the spherical filter is divided into two hemispherical filters, namely an upper hemispherical filter and a lower hemispherical filter, the two hemispherical filters are completely the same (the name of the upper hemispherical filter is different from that of the lower hemispherical filter, and the names are different according to different positions in use, so that the names are convenient to describe), and after the two hemispherical filters are assembled together, the internal structure is mirror-symmetrical about a joint surface; the upper hemispherical filter comprises a filter plate for filtering, a filter plate bracket for fixing the filter plate, a filter plate cleaner for cleaning, wherein the filter plate bracket consists of an upper part and a lower part, the distance between the upper part and the lower part is slightly larger than the thickness of the filter plate, namely, the filter plate can move in a small range in the direction vertical to the filter plate after being arranged on the filter plate bracket, the filter plate cleaner consists of a bracket for fixing the filter plate cleaner on the inner wall of the upper hemispherical filter, a rotating shaft rotationally connected with the bracket, a plurality of paddles fixed in the middle of the rotating shaft and a filter plate brush fixed at the top end of the rotating shaft, and an air flow can drive the rotating shaft to rotate after flowing through the paddles so as. When the device is in operation, the spherical filter rotates 180 degrees along a horizontal shaft after a period of treatment, namely the upper hemispherical filter and the lower hemispherical filter exchange positions before rotation, waste gas to be treated enters the upper hemispherical filter from the air inlet pipe, most of the filtered gas flows out from the purified gas outlet pipe and enters the next process, and a small part of the filtered gas enters the lower hemispherical filter, because the lower hemispherical filter is subjected to filtration treatment in the front, particles are deposited on the surface of the filter plate, the spherical filter rotates, the surface of the deposited particles on the filter plate is changed into the lower surface, because the height of the filter plate bracket is larger than the thickness of the filter plate, the filter plate in the lower hemispherical filter is closer to the filter plate brush (even because the particles are closely attached to the filter plate due to gravity), the purified gas flowing into the lower hemispherical filter impacts the paddle on the filter plate cleaner to drive the rotating shaft to, the deposited particles of the filter plate are cleaned, and after the deposits are reduced, the particles on the lower surface of the filter plate can be taken away by the clean air when the clean air flows through the filter plate, so that the effect of automatically cleaning the filter plate is achieved. The filter plate in the spherical filter can achieve the effects of reducing the filter plate replacement and increasing the continuous filtering efficiency. The air inlet pipe, the clean air outlet pipe and the dirty air outlet pipe are fixed relative to the natural space.
The detachable fixing device connected between the upper hemispherical filter and the lower hemispherical filter can be a clamping hoop or a flange and other detachable fixing devices. The purified gas outlet pipe is arranged in the middle of the spherical filter, the axis of the purified gas outlet pipe and the horizontal axis of the spherical filter are in the same straight line, and an opening for purified gas outlet is formed in the axis direction of the spherical filter.
For the device for realizing the rotation of the spherical filter, the specific implementation manner of the sliding connection between the air inlet pipe and the dirty air outlet pipe, and the specific implementation manner of the rotating connection between the clean air outlet pipe and the spherical filter, which are not mentioned in the present invention, it is within the ability of those skilled in the art to use common general knowledge/prior art means in the field or related fields to select appropriate devices and manners.
Therefore, the invention has the following beneficial effects:
(1) the organic waste gas purification process for the adhesive product has better treatment effect and better treatment efficiency;
(2) the organic waste gas purification process for the adhesive product has low treatment cost, and reduces the production economic burden.
Drawings
FIG. 1 is a schematic view of a spherical filter according to the present invention;
FIG. 2 is a schematic view of a filter plate cleaner in a spherical filter according to the present invention;
in the figure: the device comprises a spherical filter 1, an air inlet pipe 2, a clean air outlet pipe 3, a dirty air outlet pipe 4, an upper hemispherical filter 5, a lower hemispherical filter 6, an air pipe connecting port 51, a filter plate 52, a filter plate bracket 53, a filter plate cleaner 54, a support 55, a filter plate brush 56, a paddle 57 and a rotating shaft 58.
Detailed Description
The technical solution of the present invention will be further described with reference to the following embodiments.
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the present invention, all the equipments and materials are commercially available or commonly used in the industry, and the methods in the following examples are conventional in the art unless otherwise specified.
Example 1
An organic waste gas purification process for adhesive products comprises the following steps:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized 5wt% aqueous hydrogen peroxide into the filtered organic waste gas of the adhesive product to prepare mixed gas; the volume of the introduced atomized aqueous hydrogen peroxide solution is 0.2 times of the volume of the organic waste gas of the adhesive product;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid; 1/10, wherein the flow rate of the mixed gas is the flow rate of the organic waste gas of the adhesive products in the step b; the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reactive layer, the filling medium of the adsorbent layer is activated carbon, and when the permeable reactive barrier is used, ultraviolet light is irradiated, and the filling medium of the reactive layer is modified micron zero-valent iron particles;
d) and (3) post-treatment: discharging the treated mixture after passing through water.
The modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.2 time of the weight of the micron zero-valent iron particles in deionized water which is 2 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after dissolving, uniformly mixing, then adding diatomite which is 1 time of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles; the particle size of the micron zero-valent iron particles is 50 μm.
In addition, as shown in fig. 1-2, the spherical filter chamber consists of a spherical filter 1, an air inlet pipe 2, a clean air outlet pipe 3 and a dirty air outlet pipe 4; the spherical filter consists of an upper hemispherical filter 5 and a lower hemispherical filter 6 which are fixed together through a detachable fixing device; the top of the upper hemispherical filter is provided with an air pipe connecting port 51, a circular filter plate 52, a filter plate bracket 53 and a filter plate cleaner 54 are arranged in the upper hemispherical filter, the filter plate is arranged in the filter plate bracket, the height of the filter plate bracket is greater than the thickness of the filter plate, the filter plate cleaner consists of a support 55, a filter plate brush 56, a blade 57 and a rotating shaft 58, the rotating shaft is fixed on the support, the blade is arranged in the middle of the rotating shaft, and the filter plate brush is horizontally arranged and is fixed at the top end of; the internal structure of the lower hemispherical filter is the same as that of the upper hemispherical filter, and the internal structure of the lower hemispherical filter is symmetrical to that of the upper hemispherical filter along the horizontal joint surface; the air inlet pipe is arranged at the top of the spherical filter, the clean air outlet pipe is arranged in the middle of the spherical filter, and the dirty air outlet pipe is arranged at the lower part of the spherical filter; the air inlet pipe and the dirty air outlet pipe are connected with the spherical filter in a sliding way, and the clean air outlet pipe is connected with the spherical filter in a rotating way.
Example 2
An organic waste gas purification process for adhesive products comprises the following steps:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized 6wt% aqueous hydrogen peroxide solution into the filtered organic waste gas of the adhesive product to prepare mixed gas; the volume of the introduced atomized aqueous hydrogen peroxide solution is 0.3 times of the volume of the organic waste gas of the adhesive product;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid; 1/10, wherein the flow rate of the mixed gas is the flow rate of the organic waste gas of the adhesive products in the step b; the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reactive layer, the filling medium of the adsorbent layer is activated carbon, and when the permeable reactive barrier is used, ultraviolet light is irradiated, and the filling medium of the reactive layer is modified micron zero-valent iron particles;
d) and (3) post-treatment: discharging the treated mixture after passing through water.
The modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.3 time of the weight of the micron zero-valent iron particles in deionized water which is 3 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after dissolving, uniformly mixing, then adding diatomite which is 1.2 times of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles; the particle size of the micron zero-valent iron particles is 55 μm.
The specific structure of the spherical filter is the same as that of example 1.
Example 3
An organic waste gas purification process for adhesive products comprises the following steps:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized 6.5wt% aqueous hydrogen peroxide into the filtered organic waste gas of the adhesive product to prepare mixed gas; the volume of the introduced atomized aqueous hydrogen peroxide solution is 0.35 times of the volume of the organic waste gas of the adhesive product;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid; 1/9, wherein the flow rate of the mixed gas is the flow rate of the organic waste gas of the adhesive products in the step b; the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reactive layer, the filling medium of the adsorbent layer is activated carbon, and when the permeable reactive barrier is used, ultraviolet light is irradiated, and the filling medium of the reactive layer is modified micron zero-valent iron particles;
d) and (3) post-treatment: discharging the treated mixture after passing through water.
The modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.4 time of the weight of the micron zero-valent iron particles in deionized water which is 4 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after dissolving, uniformly mixing, then adding diatomite which is 1.5 times of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles; the particle size of the micron zero-valent iron particles is 65 μm.
The specific structure of the spherical filter is the same as that of example 1.
Example 4
An organic waste gas purification process for adhesive products comprises the following steps:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized 7wt% aqueous hydrogen peroxide solution into the filtered organic waste gas of the adhesive product to prepare mixed gas; the volume of the introduced atomized aqueous hydrogen peroxide solution is 0.4 times of the volume of the organic waste gas of the adhesive product;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid; 1/8, wherein the flow rate of the mixed gas is the flow rate of the organic waste gas of the adhesive products in the step b; the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reactive layer, the filling medium of the adsorbent layer is activated carbon, and when the permeable reactive barrier is used, ultraviolet light is irradiated, and the filling medium of the reactive layer is modified micron zero-valent iron particles;
d) and (3) post-treatment: discharging the treated mixture after passing through water.
The modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.5 time of the weight of the micron zero-valent iron particles in deionized water which is 5 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after the melamine formaldehyde resin solution is dissolved, uniformly mixing, then adding diatomite which is 1.7 times of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles; the particle size of the micron zero-valent iron particles is 70 μm.
The specific structure of the spherical filter is the same as that of example 1.
Example 5
An organic waste gas purification process for adhesive products comprises the following steps:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized 8wt% aqueous hydrogen peroxide solution into the filtered organic waste gas of the adhesive product to prepare mixed gas; the volume of the introduced atomized aqueous hydrogen peroxide solution is 0.5 times of the volume of the organic waste gas of the adhesive product;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid; 1/8, wherein the flow rate of the mixed gas is the flow rate of the organic waste gas of the adhesive products in the step b; the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reactive layer, the filling medium of the adsorbent layer is activated carbon, and when the permeable reactive barrier is used, ultraviolet light is irradiated, and the filling medium of the reactive layer is modified micron zero-valent iron particles;
d) and (3) post-treatment: discharging the treated mixture after passing through water.
The modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.6 time of the weight of the micron zero-valent iron particles in deionized water which is 6 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after dissolving, uniformly mixing, then adding diatomite which is 2 times of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles; the particle size of the micron zero-valent iron particles is 75 μm.
The specific structure of the spherical filter is the same as that of example 1.
The technical indexes are as follows:
the waste gas treated by the organic waste gas purification process of the adhesive product is evaluated by adopting a relevant detection method and standard which are similar to the waste gas emission standard GB 31572-2015 of the industrial synthetic resin industry:
1. particulate matter: less than or equal to 25 mg/m3；
2. Styrene: less than or equal to 40 mg/m3；
3. Formaldehyde: not more than 4 mg/m3；
4. Methyl methacrylate: less than or equal to 80 mg/m3；
5. Toluene: less than or equal to 12 mg/m3；
6. Isocyanates: less than or equal to 1 mg/m3；
7. Phenols: less than or equal to 18 mg/m3。
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (7)
1. The organic waste gas purification process for the adhesive products is characterized by comprising the following steps of:
a) waste gas filtration: removing particles in the waste gas through a spherical filter;
b) mixing atomized solution: introducing atomized hydrogen peroxide aqueous solution into the filtered organic waste gas of the adhesive product to prepare mixed gas;
c) and (3) carrying out a penetration reaction grid reaction: passing the mixed gas through a permeation reaction grid;
d) and (3) post-treatment: discharging the treated mixture after passing through water;
in the step c), the permeable reactive barrier is divided into two layers, the first layer is an adsorbent layer, the second layer is a reactive layer, the filling medium of the reactive layer is modified micron zero-valent iron particles, the modified micron zero-valent iron particles are prepared by the following steps of dissolving melamine formaldehyde resin which is 0.2-0.6 times of the weight of the micron zero-valent iron particles in deionized water which is 2-6 times of the weight of the micron zero-valent iron particles to prepare melamine formaldehyde resin solution, adding the micron zero-valent iron particles into the melamine formaldehyde resin solution after dissolving, uniformly mixing, then adding diatomite which is 1-2 times of the weight of the micron zero-valent iron particles, uniformly mixing, drying and crushing to prepare the modified micron zero-valent iron particles.
2. The process according to claim 1, wherein the cleaning agent comprises:
in the step b, the aqueous hydrogen peroxide solution is 5-8 wt% of the aqueous hydrogen peroxide solution.
3. The process according to claim 1, wherein the cleaning agent comprises:
in the step b, the volume of the introduced atomized aqueous hydrogen peroxide solution is 0.2-0.5 times of the volume of the organic waste gas of the adhesive product.
4. The process according to claim 1, wherein the cleaning agent comprises:
the flow rate of the mixed gas in the step c is 1/10-1/8 of the flow rate of the organic waste gas of the adhesive product in the step b.
5. The process according to claim 1, wherein the cleaning agent comprises:
the filling medium of the adsorbent layer is activated carbon, and the adsorbent layer is irradiated by ultraviolet light when in use.
6. The process according to claim 1, wherein the cleaning agent comprises:
the particle size of the micron zero-valent iron particles is 50-75 microns.
7. The process according to claim 1, wherein the cleaning agent comprises:
the spherical filter tank in the step a consists of a spherical filter, an air inlet pipe, a clean air outlet pipe and a dirty air outlet pipe;
the spherical filter consists of an upper hemispherical filter and a lower hemispherical filter, and the upper hemispherical filter and the lower hemispherical filter are fixed together through a detachable fixing device;
the top of the upper hemispherical filter is provided with an air pipe connecting port, a circular filter plate, a filter plate bracket and a filter plate cleaner are arranged in the upper hemispherical filter, the filter plate is arranged in the filter plate bracket, the height of the filter plate bracket is greater than the thickness of the filter plate, the filter plate cleaner consists of a support, a filter plate brush, a blade and a rotating shaft, the rotating shaft is fixed on the support, the blade is arranged in the middle of the rotating shaft, and the filter plate brush is horizontally arranged and fixed at the top end of the rotating shaft;
the internal structure of the lower hemispherical filter is the same as that of the upper hemispherical filter, and the internal structure of the lower hemispherical filter is symmetrical to that of the upper hemispherical filter along a horizontal joint surface;
the air inlet pipe is arranged at the top of the spherical filter, the clean air outlet pipe is arranged in the middle of the spherical filter, and the dirty air outlet pipe is arranged at the lower part of the spherical filter; the air inlet pipe and the dirty air outlet pipe are connected with the spherical filter in a sliding way, and the clean air outlet pipe is connected with the spherical filter in a rotating way;
the spherical filter can rotate along a horizontal shaft.
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