CN109999624B - Integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling - Google Patents
Integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling Download PDFInfo
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- CN109999624B CN109999624B CN201910288969.6A CN201910288969A CN109999624B CN 109999624 B CN109999624 B CN 109999624B CN 201910288969 A CN201910288969 A CN 201910288969A CN 109999624 B CN109999624 B CN 109999624B
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- 239000002912 waste gas Substances 0.000 title claims abstract description 77
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 57
- 239000007789 gas Substances 0.000 title claims abstract description 51
- 238000010168 coupling process Methods 0.000 title claims abstract description 48
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 48
- 230000008878 coupling Effects 0.000 title claims abstract description 47
- 239000002253 acid Substances 0.000 title claims abstract description 46
- 239000010815 organic waste Substances 0.000 title claims abstract description 26
- 238000006555 catalytic reaction Methods 0.000 title abstract description 16
- 238000000746 purification Methods 0.000 claims abstract description 57
- 230000003197 catalytic effect Effects 0.000 claims abstract description 32
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000011941 photocatalyst Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 14
- 239000004917 carbon fiber Substances 0.000 claims abstract description 12
- 239000003463 adsorbent Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 24
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 15
- 230000009467 reduction Effects 0.000 claims description 15
- 238000004080 punching Methods 0.000 claims description 12
- 230000002378 acidificating effect Effects 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000297 Rayon Polymers 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
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- 238000005470 impregnation Methods 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000012286 potassium permanganate Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 230000008439 repair process Effects 0.000 claims description 2
- 239000010812 mixed waste Substances 0.000 abstract description 4
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- 239000012855 volatile organic compound Substances 0.000 description 16
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000010963 304 stainless steel Substances 0.000 description 1
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Classifications
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- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- 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
- B01D53/02—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 adsorption, e.g. preparative gas chromatography
- B01D53/04—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 adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- 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
- B01D53/40—Acidic components
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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
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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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
- B01D53/76—Gas phase processes, e.g. by using aerosols
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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
- B01D53/81—Solid phase processes
- B01D53/82—Solid phase processes with stationary reactants
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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
- B01D53/86—Catalytic processes
- B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
- B01D53/8675—Ozone
-
- 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
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/104—Ozone
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Dispersion Chemistry (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling, which comprises an equipment box body, a waste gas inlet, a static pressure box, a sealing plate, a wire slot, an adsorption and catalysis coupling purification assembly, a waste gas outlet, an access door, a sight glass, lifting lugs and supporting legs; the adsorption catalytic coupling purification component is of a filter cartridge structure and comprises an inner side SDG acid waste gas adsorbent, a middle ultraviolet lamp tube, an outer side active carbon fiber net loaded with a photocatalyst, a filter cartridge upper cover plate, a filter cartridge lower cover plate and an inner support plate. The purifying component has a filter cartridge structure, so that the utilization efficiency of ultraviolet light and the effective contact area with waste gas can be obviously improved, the high-efficiency purification of the mixed waste gas of acid waste gas and organic waste gas with large air quantity and low concentration is realized, the adsorption and catalysis are effectively coupled, the in-situ regeneration of the adsorption material is realized, and the generation amount of dangerous waste is effectively reduced.
Description
Technical Field
The invention relates to the field of industrial waste gas purification, in particular to integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling.
Background
At present, the environmental air pollution problem in China is serious, and the rapid energy consumption further increases the environmental burden. Ozone pollution is increasingly serious; entering autumn and winter, heavy haze weather still occurs sometimes. The requirements of people on the quality of the ambient air are urgent, while industrial VOCs are important reasons for pollution of ozone and haze, and most of the VOCs discharged by enterprises have the characteristics of large air volume and low concentration; meanwhile, the industrial waste gas has complex components, and various acid waste gases besides organic waste gas can be generated. The conventional treatment process is difficult to treat the acid waste gas and the organic waste gas simultaneously, the problems of large investment occupation and high energy consumption exist in sectional treatment, enterprises are difficult to bear, and the effective treatment of the waste gas becomes an important factor for restricting the improvement of environmental quality.
At present, the common method for treating the acid waste gas is an alkali absorption method, and the common methods for treating the low-concentration and large-air-volume VOCs are adsorption, photocatalysis and plasma processes. The conventional treatment process requires that an alkali spray tower is separately arranged to treat the acid waste gas by adopting an absorption method, and then the VOCs waste gas is treated by adsorption, photocatalysis and plasma processes. The method has the advantages that the water gas content is too high after alkali spraying, the subsequent purification of VOCs is affected, and a demister is additionally arranged; if the adsorption method is adopted in the subsequent treatment, a large amount of adsorbents and absorption liquid are required to be replaced, so that the problems of large hazardous waste disposal amount and high operation cost exist; the problems of secondary ozone pollution, poor actual purification efficiency and the like existing in the single photocatalysis and plasma process are difficult to meet the increasingly strict environmental protection requirements.
Chinese patent CN 207430043U discloses a low temperature photocatalysis coupling adsorption waste gas purifying device, which comprises a sealed shell, the two opposite sides of the shell are respectively provided with an air inlet and an air outlet for air inlet and air outlet, a plurality of UV ultraviolet lamp modules for generating ultraviolet rays and active carbon modules for adsorbing and filtering waste gas are installed in the shell, the UV ultraviolet lamp modules and the active carbon modules are alternately arranged at intervals, titanium dioxide modules are installed beside the UV modules, or titanium dioxide is sprayed on the surface of the active carbon modules, the plurality of UV ultraviolet lamp modules are connected with an external power supply and a control switch, an active carbon cotton felt filter plate is also arranged in the shell, and the positions of the active carbon cotton felt filter plate and the air inlet are opposite, the beneficial effects of the invention are that: the UV ultraviolet lamp module, the honeycomb aluminum plate module and the activated carbon module are matched with each other for use, so that the catalysis effect of titanium dioxide can be exerted, organic molecules in waste gas are fully reacted, cracked and removed, and the purification effect is improved. The device integrates the advantages of photocatalytic pyrolysis and activated carbon adsorption, but cannot purify acid waste gas, and meanwhile, the contact area between the purification module and the waste gas is limited, so that the waste gas purification efficiency is influenced.
Chinese patent CN207462998U discloses an environmental protection industrial waste gas thermocatalysis purifier, proposes higher efficiency, lower cost's device scheme to a large amount of waste gas purification device inefficiency, the problem that the cost is higher, and to the current condition to a large amount of different ph value waste gases, the unable uniform purification treatment of different flow waste gas, it includes the air inlet through increasing gas predistributer, adopt the shower nozzle to spray acid and alkali fog rain and increase the mode of heating catalysis, it includes the air inlet, first order filter screen, the gas-supply pipe, gas predistributer, humidification treatment room, the shower nozzle, the water storage room, acid and alkali tester, the acid and alkali room, the water funnel, the waste water pond, the check baffle, dry U type pipe, the heating net, the catalysis room, the second grade filter screen, the gas outlet, gas recovery device, through the even air current of distributor, humidification room spray rain and acid and alkali, the heating net intensification promotes catalysis, make the treatment scope bigger, handle more even scheme. Realize the high efficiency, the wide range and the stability of the waste gas purification. The device fully considers the treatment of acid waste gas, but has a complex structure, can generate a large amount of waste liquid, and has higher later operation and maintenance cost.
Disclosure of Invention
The invention aims to overcome the defects of low purification efficiency, large investment and secondary pollution existing in the prior art for treating the mixed waste gas of the acid waste gas and the organic waste gas, and provides integrated equipment for treating the acid waste gas and the organic waste gas by adsorption and catalysis coupling. By adopting the technical scheme of the invention, the mixed waste gas of the acid waste gas and the organic waste gas can be effectively purified, the synergistic purification of adsorption and photocatalysis is realized, and the in-situ desorption regeneration of the activated carbon fiber is realized.
In order to achieve the above purpose, the technical scheme provided by the invention is as follows:
the integrated equipment for treating the acid waste gas and the organic waste gas through adsorption and catalysis coupling comprises an equipment box body, a waste gas inlet and a static pressure box, wherein an adsorption and catalysis coupling purification assembly is arranged in the equipment box body, the static pressure box is arranged above the equipment box body, the upper part of the equipment box body is connected with the waste gas inlet, and the waste gas inlet is communicated with the static pressure box; the adsorption catalytic coupling purification component is of a filter cartridge type structure and is provided with a framework formed by a punching frame and a cover plate, and comprises an inner SDG acid waste gas adsorption purification layer, a middle ultraviolet lamp tube, an outer activated carbon fiber net loaded with a photocatalyst and an ozone reduction layer; the side of the equipment box body is provided with an exhaust gas outlet.
Furthermore, the bottom of the static pressure tank is a sealing plate, a plurality of circular filter cartridge grooves are uniformly arranged on the sealing plate, and adsorption catalytic coupling purification components are placed in the circular filter cartridge grooves.
Further, a wire slot is arranged on the sealing plate, the wire slot comprises an annular wire slot and a square wire slot which are arranged on the outer side of the circular filter cylinder slot, and the square wire slot is positioned on one side of the annular wire slot and is mutually communicated; the wire slot is detachably assembled up and down through telescopic opening blocking teeth.
Further, the equipment is provided with an access door, comprising an upper electric access door and a side assembly access door, wherein the upper electric access door is positioned right above the equipment box body and is used for replacing ultraviolet lamp tubes or wiring maintenance; the side assembly access door is integrally positioned below the sealing plate and used for replacing or maintaining the adsorption catalytic coupling purification assembly.
Further, the periphery of the equipment box body is provided with viewing mirrors for observing whether the ultraviolet lamp tube and other parts work normally or not; the equipment box body is also provided with a lifting lug and a supporting leg, the lifting lug is used for lifting, and the supporting leg is used for equipment fixing.
Further, the bottom plate of the adsorption catalytic coupling purification assembly is a solid plate, and forms a stable structure with the punching frame, the cover plate and the internal supporting piece.
Further, the cover plate comprises an SDG cover plate for fixing the upper part of the SDG acid waste gas adsorption purification layer, an ultraviolet lamp cover plate for fixing the upper part of the ultraviolet lamp tube, an active carbon fiber cover plate for fixing the upper part of the active carbon fiber net for supporting the photocatalyst, a reduction layer cover plate for fixing the upper part of the ozone reduction layer and a cover plate buckle; the cover plate buckle is provided with a clamping groove, a clamping block is arranged on the sealing plate circular filter cylinder groove, and the clamping groove of the cover plate buckle corresponds to the clamping block of the sealing plate circular filter cylinder groove.
Further, the SDG adsorbent filled in the inner SDG acid waste gas adsorption purification layer is solid granular inorganic matters with larger specific surface area, and can be chemically reacted with acid waste gas to generate neutral salt for storage; the ultraviolet lamp tube is a 180nm and 254nm dual-band wavelength ultraviolet lamp, and the lamp tube is made of high-purity quartz glass.
Further, the active carbon fiber net substrate carrying the photocatalyst is polyacrylonitrile-based active carbon or viscose-based active carbon, the active carbon fiber is pretreated and modified by sulfuric acid and potassium permanganate, and the photocatalyst is carried on the active carbon fiber by an impregnation method; the ozone reduction layer is a catalyst composed of oxides of manganese, copper, nickel and cobalt, and can effectively degrade redundant ozone generated by the ultraviolet lamp tube.
Furthermore, the punching frame is made of punched aluminum plates or steel plates and is a framework of the catalytic coupling purification assembly, and purified waste gas is discharged from meshes of the punching frame.
Compared with the prior art, the invention has the beneficial effects that:
(1) The integrated equipment for treating the acid waste gas and the organic waste gas by adsorption and catalysis coupling adopts the dry SDG acid waste gas adsorbent to treat the acid waste gas, so that the investment and operation cost and the secondary pollution of waste liquid are obviously reduced; VOCs waste gas treated by the SDG acid waste gas adsorbent enters a photolysis and photocatalysis treatment layer, short-wavelength ultraviolet light emitted by a 180nm ultraviolet lamp can carry out photolysis breaking on VOCs molecular chains, and ozone generated simultaneously can effectively decompose the VOCs; the VOCs after the photolysis section treatment further enter an activated carbon fiber network loaded with a photocatalyst, the specific surface area of the activated carbon fiber is large, the residual VOCs and reaction products of photolysis and ozone can be effectively adsorbed, and the photocatalyst loaded on the activated carbon fiber network can efficiently degrade the enriched VOCs under the action of ultraviolet light; the ozone which is not fully reacted completely is thoroughly decomposed in the ozone reduction layer. The method effectively combines ultraviolet photolysis, adsorption, photocatalysis and ozone in a synergistic way, can efficiently purify VOCs, and can effectively treat acid waste gas by the SDG acid waste gas adsorbent.
(2) The integrated equipment for treating the acid waste gas and the organic waste gas by adsorption and catalysis coupling effectively desorbs the VOCs adsorbed by the activated carbon fiber under the action of ultraviolet light and ozone, thereby ensuring the adsorption capacity of the activated carbon fiber to the VOCs, providing sufficient sites and reaction time for purifying the VOCs, ensuring the lasting and efficient purifying capacity of the whole device, and reducing the using amount of the activated carbon adsorbent.
(3) The integrated equipment for treating the acid waste gas and the organic waste gas by adsorption and catalysis coupling has the advantages that the purifying component is of a filter cartridge type structure, the utilization efficiency of ultraviolet light and the effective contact area of the purifying material and the waste gas can be obviously improved, so that the high-efficiency purification of the mixed waste gas of the acid waste gas with large air quantity and low concentration and the organic waste gas is realized.
Drawings
FIG. 1 is a schematic diagram of an integrated apparatus for treating acidic waste gas and organic waste gas by adsorption-catalytic coupling according to the present invention.
Fig. 2 is a schematic front view of an integrated equipment purifying assembly for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling according to the present invention.
Fig. 3 is a schematic top view of an integrated equipment purification assembly for treating acid waste gas and organic waste gas by adsorption and catalytic coupling according to the present invention.
FIG. 4 is a schematic top cross-sectional view of an integrated equipment purification assembly for the adsorption-catalytic coupling treatment of acid and organic waste gases according to the present invention.
In the figure: 10-equipment box, 20-waste gas inlet, 30-static pressure box, 40-shrouding, 50-wire slot, 60-adsorption catalytic coupling purification assembly, 70-waste gas outlet, 80-access door, 90-sight glass, 100-lifting lug, 110-landing leg, 61-SDG acid waste gas adsorption purification layer, 62-ultraviolet lamp tube, 63-activated carbon fiber net loaded with photocatalyst, 64-ozone reduction layer, 65-punching frame, 66-cover plate, 67-bottom plate, 661-SDG cover plate, 662-ultraviolet lamp cover plate, 663-activated carbon fiber cover plate, 664-reduction layer cover plate and 665-cover plate buckle.
Detailed Description
The invention will be further illustrated with reference to specific examples.
As shown in fig. 1, the integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalytic coupling comprises an equipment box body 10, a waste gas inlet 20, a static pressure box 30, a sealing plate 40, a wire slot 50, an adsorption and catalytic coupling purification assembly 60, a waste gas outlet 70, an access door 80, a sight glass 90, lifting lugs 100 and supporting legs 110.
As shown in fig. 2, 3 and 4, the adsorption-catalytic-coupling purification module 60 has a cartridge structure including an inner ultraviolet lamp tube 61, a photocatalyst-supporting activated carbon fiber net 62, an SDG acid exhaust gas adsorption purification layer 63, an ozone reduction layer 64, a punching frame 65, a cover plate 66, and a bottom plate 67; wherein the cover plate further comprises an SDG cover plate 661, an ultraviolet lamp cover plate 662, an active carbon fiber cover plate 663, a reduction layer cover plate 664 and a cover plate buckle 665.
In this embodiment, the upper part of the tank 10 is connected to the exhaust gas inlet 20, and the exhaust gas inlet 20 is communicated with the static pressure tank 30, so that the exhaust gas firstly enters the static pressure tank and then uniformly enters each purifying component, and the system resistance and noise can be reduced.
Preferably, the whole material of the equipment is 304 stainless steel.
In this embodiment, the sealing plate 40 is disposed at the bottom of the static pressure tank 30, and a plurality of circular filter cartridge slots are uniformly disposed on the sealing plate 40, and the sealing plate 40 and the tank 10 are tightly sealed except for the filter cartridge slots, so that exhaust gas can only enter the exhaust gas purifying component through the circular filter cartridge slots, thereby ensuring the purifying efficiency of the exhaust gas.
The seal plate 40 in this embodiment is provided with a wire groove 50, and the wire groove 50 is divided into an annular wire groove 501 and a square wire groove 502 which are arranged outside the circular filter cartridge groove, wherein the square wire groove 502 is positioned at one side of the annular wire groove 501 and communicated with each other; wherein ultraviolet lamps are annularly arranged in the annular wire slots 501, and lamp tube wiring summary leads to the outside of the equipment through the square wire slots 502; the wire slot is detachably assembled up and down through the telescopic opening blocking teeth, so that the wire slot is convenient to detach and maintain.
Preferably, the wire slot is made of ABS flame-retardant insulating plastic.
In this embodiment, the circular filter cartridge groove is used for placing the adsorption catalytic coupling purification assembly 60, the upper end of the purification assembly 60 is a cover plate, and the size of the cover plate is larger than that of the circular filter cartridge groove on the sealing plate 40, so as to play a role in fixing the purification assembly 60, and the waste gas enters the catalytic coupling purification assembly 60 with a filter cartridge structure after being uniformly distributed through the static pressure box 30, and the purified waste gas is summarized through the lateral meshes of the catalytic coupling purification assembly with the filter cartridge structure and is discharged through the waste gas outlet 70.
Preferably, the air quantity processed by a single adsorption catalytic coupling purification component is 500m 3 And/h, the system treatment air quantity can be increased by increasing the number of the purification components, so that the modularization and standardization of the waste gas treatment are realized.
The access door 80 in this embodiment includes an upper electrical access door and a side assembly access door, wherein the upper electrical access door is located directly above the equipment cabinet 10 for replacement or wiring maintenance of the ultraviolet lamp tube 62; the side assembly access door is located entirely below the closure plate 40 for replacement or repair of the adsorption catalytic coupling purification assembly 60.
In this embodiment, the mirrors 90 are distributed around the case 10, so as to observe whether the components such as the ultraviolet lamp tube 62 work normally; lifting lug 100 is used for lifting; the legs 110 are used for device fixation.
The adsorption-catalytic coupling purification assembly 60 in this embodiment has a cartridge structure, and includes an inner SDG acid waste gas adsorption purification layer 61, a middle ultraviolet lamp tube 62, a photocatalyst-loaded activated carbon fiber net 63, an ozone reduction layer 64, a punching frame 65, a cover plate 66, and a bottom plate 67; the bottom plate 67 is a solid plate forming a stable structure with the punching frame 65 and the cover plate 66 and the internal support.
Preferably, a layer of activated carbon fiber net for supporting a photocatalyst can be additionally arranged on the outer side of the SDG acid waste gas adsorption purification layer, so that the utilization efficiency of ultraviolet light is improved, and the purification efficiency of VOCs is further improved.
The SDG adsorbent filled in the inner SDG acid waste gas adsorption purification layer 61 in this embodiment is a solid particulate inorganic substance having a large specific surface area, and can chemically react with the acid waste gas to form a neutral salt and store the neutral salt therein.
In this embodiment, the ultraviolet lamp tube 62 is a dual-band wavelength ultraviolet lamp with 180nm and 254nm, and the lamp tube is made of high-purity quartz glass.
In this embodiment, the substrate of the activated carbon fiber net 63 carrying the photocatalyst is polyacrylonitrile-based activated carbon or viscose-based activated carbon, the activated carbon fiber is pretreated and modified by sulfuric acid and potassium permanganate, and the photocatalyst is carried on the activated carbon fiber by an impregnation method.
The preferable active carbon fiber net substrate is polyacrylonitrile-based active carbon, the photocatalyst is commercially available P25 titanium dioxide, and the illumination intensity of ultraviolet light on the active carbon fiber net is ensured to be 2mW/cm 2 。
In this embodiment, ozone reduction layer 64 is a catalyst composed of oxides of manganese, copper, nickel, and cobalt, and can effectively degrade the excess ozone generated by UV tube 62.
In this embodiment, the punched frame 65 is made of punched aluminum plate, steel plate, etc., and is a skeleton of the catalytic coupling purification assembly 60, so that the purified exhaust gas can be discharged out of the device.
The cover plate 66 in this embodiment includes SDG apron 661, ultraviolet lamp apron 662, active carbon fiber apron 663, reduction layer apron 664 and apron buckle 665, and wherein the draw-in groove of apron buckle 665 is placed in the prefabricated fixture block department clockwise rotation of the circular section of thick bamboo groove of shrouding 40 alright with absorption catalytic coupling purification subassembly 60 fixed in the integration equipment, and anticlockwise rotation can when dismantling, can realize quick installation and dismantlement, is convenient for absorption catalytic coupling purification subassembly 60's change and maintenance.
The present invention is not limited to the preferred embodiments, and any simple modification, equivalent replacement, and improvement made to the above embodiments by those skilled in the art without departing from the technical scope of the present invention, will fall within the scope of the present invention.
Claims (6)
1. An integrated device for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling, which is characterized in that: the device comprises a device box body (10), an exhaust gas inlet (20) and a static pressure box (30), wherein an adsorption catalytic coupling purification assembly (60) is arranged in the device box body (10), the static pressure box (30) is arranged above the device box body (10), the upper part of the device box body (10) is connected with the exhaust gas inlet (20), and the exhaust gas inlet (20) is communicated with the static pressure box (30); the adsorption catalytic coupling purification assembly (60) is of a filter cartridge structure and is provided with a framework formed by a punching frame (65) and a cover plate (66), and the adsorption catalytic coupling purification assembly (60) comprises an inner SDG acid waste gas adsorption purification layer (61), a middle ultraviolet lamp tube (62), an outer activated carbon fiber net (63) loaded with a photocatalyst and an ozone reduction layer (64); an exhaust gas outlet (70) is arranged on the side surface of the equipment box body (10);
the bottom of the static pressure box (30) is provided with a sealing plate (40), a plurality of circular filter cartridge grooves are uniformly arranged on the sealing plate (40), and an adsorption catalytic coupling purification assembly (60) is arranged in each circular filter cartridge groove;
the cover plate (66) comprises an SDG cover plate (661) for fixing the upper part of the SDG acid waste gas adsorption purification layer, an ultraviolet lamp cover plate (662) for fixing the upper part of the ultraviolet lamp tube (62), an active carbon fiber cover plate (663) for fixing the upper part of the active carbon fiber net (63) for supporting the photocatalyst, a reduction layer cover plate (664) for fixing the upper part of the ozone reduction layer (64) and a cover plate buckle (665); the cover plate buckle (665) is provided with a clamping groove, a clamping block is arranged on the circular filter cylinder groove of the sealing plate (40), and the clamping groove of the cover plate buckle (665) corresponds to the clamping block of the circular filter cylinder groove of the sealing plate (40);
the SDG adsorbent filled in the inner SDG acid waste gas adsorption purification layer (61) is solid granular inorganic matters with larger specific surface area, and can be chemically reacted with acid waste gas to generate neutral salt for storage; the ultraviolet lamp tube (62) is a 180nm and 254nm dual-band wavelength ultraviolet lamp, and the lamp tube is made of high-purity quartz glass;
the base material of the activated carbon fiber net (63) for supporting the photocatalyst is polyacrylonitrile-based activated carbon or viscose-based activated carbon, activated carbon fibers are pretreated and modified by sulfuric acid and potassium permanganate, and the photocatalyst is supported on the activated carbon fibers by an impregnation method; the ozone reduction layer (64) is a catalyst composed of oxides of manganese, copper, nickel and cobalt, and can effectively degrade the excessive ozone generated by the ultraviolet lamp tube (62).
2. The integrated equipment for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling according to claim 1, wherein the integrated equipment comprises: the sealing plate (40) is provided with a wire groove (50), the wire groove (50) comprises an annular wire groove (501) and a square wire groove (502) which are arranged on the outer side of the circular filter cylinder groove, and the square wire groove (502) is positioned on one side of the annular wire groove (501) and communicated with each other; the wire slot (50) is detachably assembled up and down through telescopic opening blocking teeth.
3. The integrated equipment for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling according to claim 1, wherein the integrated equipment comprises: the equipment is provided with an access door, comprising an upper electric access door (80) and a side assembly access door, wherein the upper electric access door (80) is positioned right above the equipment box body (10) and is used for replacing an ultraviolet lamp tube (62) or wiring maintenance; the side assembly access door is integrally located below the closure plate (40) for replacement or repair of the adsorption catalytic coupling purification assembly (60).
4. The integrated equipment for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling according to claim 1, wherein the integrated equipment comprises: the periphery of the equipment box body (10) is provided with viewing mirrors (90) for observing whether the ultraviolet lamp tube (62) parts work normally or not; the equipment box body (10) is also provided with a lifting lug (100) and a supporting leg (110), wherein the lifting lug (100) is used for lifting, and the supporting leg (110) is used for equipment fixing.
5. The integrated equipment for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling according to claim 1, wherein the integrated equipment comprises: the bottom plate (67) of the adsorption catalytic coupling purification assembly (60) is a solid plate, and forms a stable structure with the punching frame (65), the cover plate (66) and the internal supporting piece.
6. The integrated equipment for treating acidic waste gas and organic waste gas by adsorption and catalytic coupling according to claim 1, wherein the integrated equipment comprises: the punching frame (65) is made of punched aluminum plates or steel plates, is a framework of the catalytic coupling purification assembly (60), and purified waste gas is discharged from meshes of the punching frame (65).
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| CN201910288969.6A CN109999624B (en) | 2019-04-11 | 2019-04-11 | Integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling |
| PCT/CN2020/080664 WO2020207236A1 (en) | 2019-04-11 | 2020-03-23 | Integrated equipment for adsorption and catalytic coupling treatment of acid waste gas and organic waste gas |
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| CN201910288969.6A CN109999624B (en) | 2019-04-11 | 2019-04-11 | Integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling |
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| CN109999624B true CN109999624B (en) | 2023-12-08 |
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| CN109999624B (en) * | 2019-04-11 | 2023-12-08 | 南京大学环境规划设计研究院集团股份公司 | Integrated equipment for treating acid waste gas and organic waste gas by adsorption and catalysis coupling |
| CN111330422A (en) * | 2020-03-25 | 2020-06-26 | 深圳市贝腾科技有限公司 | Drying machine |
| CN112268286B (en) * | 2020-10-19 | 2021-06-29 | 南京大学环境规划设计研究院集团股份公司 | High-efficient safe heat accumulation burning VOCs clean system |
| CN113599917A (en) * | 2021-08-12 | 2021-11-05 | 上海展恒环保科技有限公司 | Carbon fiber filter cartridge applied to pretreatment of high-boiling-point substances in paint mist in coating industry |
| CN113813781B (en) * | 2021-09-27 | 2023-03-10 | 南大恩洁优环境技术(江苏)股份公司 | Purification device and purification method for simultaneously treating organic and inorganic mixed waste gas |
| CN114307630A (en) * | 2021-12-20 | 2022-04-12 | 深圳市天得一环境科技有限公司 | Method and equipment for treating high-humidity ozone-containing waste gas |
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