CN108905576A - A kind of VOCs treatment technique - Google Patents
A kind of VOCs treatment technique Download PDFInfo
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- CN108905576A CN108905576A CN201810816479.4A CN201810816479A CN108905576A CN 108905576 A CN108905576 A CN 108905576A CN 201810816479 A CN201810816479 A CN 201810816479A CN 108905576 A CN108905576 A CN 108905576A
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/602—Oxides
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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
- B01D2253/25—Coated, impregnated or composite adsorbents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
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Abstract
The invention discloses a kind of VOCs treatment techniques comprising following steps：（1）Organic exhaust gas passes through primary absorbent, and specific primary absorbent liquid absorbs comparable organic exhaust gas；Gas phase that treated carries out lye absorption, and liquid phase that treated carries out recycling processing；（2）By secondary spraying, lye absorbs comparable organic exhaust gas；Gas phase that treated carries out adsorption reaction, and liquid phase that treated carries out recycling processing；（3）It is adsorbed by specific three-level, gas phase that treated reaches discharge standard, and treated, and non-woven bag can carry out recycling processing；（4）It carries out particular adjustments to primary absorbent processing and secondary spraying treated liquid phase and makes to be dissolved in organic exhaust gas therein to overflow, the organic exhaust gas of spilling, the non-woven bag after three-level adsorption treatment, zeolite powder and copper oxide nano particle carry out burning processing in combustion zone, have the advantages that reduce cost.
Description
Technical field
The present invention relates to a kind of VOCs treatment techniques.
Background technique
Organic exhaust gas can be all generated during the manufacturing of many industries, most enterprises are taken directly in the prior art
Run in put or simple process after direct emission mode, this mode is larger to the harm of environment.Application publication number is
CN107930313A, the Chinese patent that data of publication of application is on April 20th, 2018 disclose a kind of volatile organic waste gas processing
System is handled by the way of four points of spray columns, UV photodissociation and plasma processing cluster machine.
It is in place of the deficiencies in the prior art, the cost of UV photodissociation and plasma processing cluster machine is larger, to medium-sized and small enterprises
Burden it is larger, cause medium-sized and small enterprises application value no for the processing of organic exhaust gas.Therefore, develop it is a kind of low cost
Organic exhaust gas method is worth with biggish production application.
Summary of the invention
The object of the present invention is to provide a kind of VOCs treatment techniques, have the advantages that reduce cost.
Above-mentioned technical purpose of the invention technical scheme is that：
A kind of VOCs treatment technique, includes the following steps：
（1）Primary absorbent
Organic exhaust gas enters in primary absorbent tank from the bottom of primary absorbent tank, and the gas phase absorbed is from being arranged in primary absorbent
The pipeline of tank top drains into absorption tower, and stainless steel waveform filler is equipped in the primary absorbent tank；The primary absorbent tank
It is interior to fill full primary absorbent liquid, the primary absorbent liquid include the SDS of 0.5 ~ 0.6wt%, 0.1 ~ 0.2wt% polytetrafluoroethylene (PTFE),
The release paper scrap of 0.1 ~ 0.2wt% and 99.0 ~ 99.3% saturated limewater；The liquid throughput ratio of primary absorbent liquid and organic exhaust gas
It is 1:700~800；
After the organic exhaust gas concentration in primary tourie increases to 10g/l, primary absorbent pot bottom is arranged in primary absorbent liquid certainly
Pipeline enters absorbing liquid collecting tank；
（2）Lye absorbs
The gas phase obtained after primary absorbent enters in absorption tower from the bottom on absorption tower successively carries out first order spray-absorption and
Second level spray-absorption, the middle part and top on the absorption tower spray respectively from the first alkali liquid tank the first spray liquid and come from
In the second spray liquid of the second alkali liquid tank；The gas phase obtained after second level spray-absorption is drained into from the pipeline being arranged at the top of absorption tower
In adsorption tower；The gas phase obtained after the gas phase, the second spray liquid and the primary absorbent that are obtained after first spray liquid and primary absorbent
Liquid throughput ratio is 1:200~250；
The second spray liquid in second alkali liquid tank is the fresh lye from external environment, and fresh lye is saturated limewater；Second level
Enter after the liquid phase mixing obtained after spray-absorption and is used as the first spray liquid, the VOCs in the first spray liquid in the first alkali liquid tank
After concentration increases to 5g/l, the first spray liquid enters spray liquid collecting tank from the pipeline that the first lye pot bottom is arranged in；
（3）Absorption
The gas phase obtained after second level spray-absorption enters from the bottom of adsorption tower successively carries out first order absorption, second in adsorption tower
Grade absorption and the third level are adsorbed, and are successively arranged the first adsorption plate, the second adsorption plate on bottom-up direction in the adsorption tower
With third adsorption plate；
First adsorption plate include with the adsorption tower cross section be adapted the first support plate and be mounted on the first support plate and with institute
The first adaptable non-woven bag of adsorption tower cross section is stated, is filled with active carbon in first non-woven bag；
Second adsorption plate include with adsorption tower cross section be adapted the second support plate and be mounted on the second support plate simultaneously and adsorption tower
The second adaptable non-woven bag of cross section, the second non-woven bag is interior to be filled with active carbon, calcium chloride powder, nanoscale polyaluminium chloride
With the mixture of polyacrylonitrile fibre, active carbon, calcium chloride powder, nanoscale polyaluminium chloride and polyacrylonitrile fibre mass ratio be
100:5~6:10~12:2~3；
Third adsorption plate include with adsorption tower cross section be adapted third support plate and be mounted on third support plate simultaneously and adsorption tower
The adaptable third non-woven bag in cross section, third non-woven bag are interior polychloride filled with active carbon, calcium chloride powder, nanoscale
Aluminium, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mixture, active carbon, calcium chloride powder, nanoscale polyaluminium chloride,
Polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mass ratio be 100:5~6:10~12:2~3:1~2:2~3: 2~3；
The gas phase obtained after three-level absorption can be immediately discharged in air, by the first non-woven bag obtained after absorption, the second nonwoven
Cloth bag and third non-woven bag, which remove, carries out recycling processing；
（4）It recycles
Absorbing liquid collecting tank and spray liquid collecting tank are transported to and recycle area, the primary absorbent liquid in absorbing liquid collecting tank is from
The bottom of reason tank is pumped in process tank, and the second spray liquid in spray liquid collecting tank is pumped to process tank from the bottom of process tank
It is interior, acid solution is added into process tank and adjusts pH to 6.8 ~ 7.0, the organic exhaust gas in tank to be processed overflows and from being arranged in process tank
The pipeline at top enters combustion zone；
The first non-woven bag, the second non-woven bag and third non-woven bag after removing are put into combustion zone, separately to combustion zone
Interior addition zeolite powder and copper oxide nano particle；First non-woven bag, the second non-woven bag and third non-woven bag total amount, from
The mass ratio of organic exhaust gas, zeolite powder and copper oxide nano particle that process tank overflows is 100:25~30:1~2:0.4~0.5；
Sufficient air is filled with to combustion zone and is burnt at 200 ~ 225 DEG C, and the thermal energy to burn is recycled by heat exchange.
Further preferably：On the stainless steel waveform filler be coated with one layer of absorbed layer, the absorbed layer by with
The preparation of lower section method：By styrene, methyl methacrylate, gelatin, starch and toluene in mass ratio 100:30~35:0.5~0.6:
0.3~0.4:2 ~ 3 mixing, be warming up to softening, be stirred to react 1.5 ~ 2.0hr to get.
Further preferably：Sodium alginate and silicon mosanom, active carbon, calcium chloride are also filled in second non-woven bag
Powder, nanoscale polyaluminium chloride, polyacrylonitrile fibre, sodium alginate and silicon mosanom mass ratio be 100:5~6:10~12:2~3:
1~2:1~2；
Sodium alginate, silicon mosanom and sodium bicarbonate, active carbon, calcium chloride powder, nanoscale are also filled in third non-woven bag
The quality of polyaluminium chloride, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder, wheat bran, sodium alginate, silicon mosanom and sodium bicarbonate
Than being 100:5~6:10~12:2~3:1~2:2~3:2~3:1~2:1~2:3~4.
Further preferably：The top of the adsorption tower is connected with adsorption tanks again by pipeline, and three-level is adsorbed in adsorption tower
The gas phase obtained afterwards enters in adsorption tanks again from the entrance of adsorption tanks side again, is vertically arranged in the adsorption tanks again again
Adsorption plate suction-operated, then the outlet from adsorption tanks again far from inlet side drains into air；
Again adsorption plate include be adapted with the longitudinal section of adsorption tanks again adsorb support plate again and coated in adsorbing support plate two sides again
Coating, the coating with a thickness of 4 ~ 5mm, the coating include the magnesia of 20 ~ 22wt%, 30 ~ 32wt% aluminium oxide and
The magnesium chloride of 46 ~ 50wt%.
In conclusion the invention has the advantages that：
1, using traditional lye absorption and sorption and burning Combined Treatment, only by improving the structure and material of each step, substitution is repaired
Change whole route, reduce cost, at the same can be done in the existing processing equipment of medium-sized and small enterprises improvement i.e. can be used, reduce rectify and improve at
This, is conducive to promote；
2, the processing method of the application can play preferable organic waste-gas purification, and discharge amount is negligible, have environmental-friendly
Property, hence it is evident that it is better than the prior art；
3, the processing method of the application can sufficiently recycle organic exhaust gas, improve its availability, the secondary dirt after reducing its burning
Metachromia, at the same when burning temperature significantly lower than the prior art, energy-saving consumption-reducing.
Detailed description of the invention
Fig. 1 is the primary absorbent of embodiment 1, liquid absorbs and adsorption plant structural schematic diagram；
Fig. 2 is the recycling device structure schematic diagram of embodiment 1；
Fig. 3 is the primary absorbent of embodiment 4, liquid absorbs and adsorption plant structural schematic diagram.
1, primary absorbent tank；2, absorbing liquid collecting tank；3, absorption tower；4, the first alkali liquid tank；5, the second alkali liquid tank；6, it sprays
Liquid collecting tank；7, adsorption tower；8, process tank；9, combustion zone；10, adsorption tanks again.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the protection scope of invention.
Embodiment 1：A kind of VOCs treatment technique includes the following steps referring to Figures 1 and 2：
（1）Primary absorbent
Organic exhaust gas enters in primary absorbent tank 1 from the bottom of primary absorbent tank 1, and the gas phase absorbed is inhaled from setting in primary
The pipeline at 1 top of closed cans drains into absorption tower 3, and stainless steel waveform filler is equipped in primary absorbent tank 1；In primary absorbent tank 1
Full primary absorbent liquid is filled, primary absorbent liquid includes the release paper of the polytetrafluoroethylene (PTFE) of SDS, 0.1wt% of 0.5wt%, 0.2wt%
Consider the saturated limewater with 99.3% to be worth doing；The liquid throughput ratio of primary absorbent liquid and organic exhaust gas is 1:800；
After the organic exhaust gas concentration in primary tourie 1 increases to 10g/l, 1 bottom of primary absorbent tank is arranged in primary absorbent liquid certainly
Pipeline enter absorbing liquid collecting tank 2；
（2）Lye absorbs
The gas phase obtained after primary absorbent enter in absorption tower 3 from the bottom on absorption tower 3 successively carry out first order spray-absorption and
Second level spray-absorption, the middle part and top on absorption tower 3 spray respectively from the first alkali liquid tank 4 the first spray liquid and come from
In the second spray liquid of the second alkali liquid tank 5；The tubes rows at 3 top of absorption tower are arranged in the gas phase obtained after second level spray-absorption certainly
To adsorption tower 7；The gas phase obtained after the gas phase, the second spray liquid and the primary absorbent that are obtained after first spray liquid and primary absorbent
Liquid throughput ratio be 1:200；
The second spray liquid in second alkali liquid tank 5 is the fresh lye from external environment, and fresh lye is saturated limewater；Second level
Enter in the first alkali liquid tank 4 after the liquid phase mixing obtained after spray-absorption and be used as the first spray liquid, when in the first spray liquid
After VOCs concentration increases to 5g/l, the first spray liquid enters spray liquid collecting tank 6 from the pipeline that 4 bottom of the first alkali liquid tank is arranged in；
（3）Absorption
The gas phase obtained after second level spray-absorption enters in adsorption tower 7 from the bottom of adsorption tower 7 successively carries out first order absorption,
Secondary absorption and third level absorption, be successively arranged on bottom-up direction in adsorption tower 7 first adsorption plate, the second adsorption plate and
Third adsorption plate；
First adsorption plate include with 7 cross section of adsorption tower be adapted the first support plate and be mounted on the first support plate simultaneously and adsorption tower
The first adaptable non-woven bag of 7 cross sections, the first non-woven bag is interior to be filled with active carbon；
Second adsorption plate include with 7 cross section of adsorption tower be adapted the second support plate and be mounted on the second support plate simultaneously and adsorption tower
The second adaptable non-woven bag of 7 cross sections, the second non-woven bag are interior polychloride filled with active carbon, calcium chloride powder, nanoscale
The mixture of aluminium and polyacrylonitrile fibre, active carbon, calcium chloride powder, nanoscale polyaluminium chloride and polyacrylonitrile fibre mass ratio
It is 100:5:10:2；
Third adsorption plate include with 7 cross section of adsorption tower be adapted third support plate and be mounted on third support plate simultaneously and adsorption tower
The adaptable third non-woven bag in 7 cross sections, third non-woven bag are interior polychloride filled with active carbon, calcium chloride powder, nanoscale
Aluminium, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mixture, active carbon, calcium chloride powder, nanoscale polyaluminium chloride,
Polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mass ratio be 100:5:10:2:1:2:2；
The gas phase obtained after three-level absorption can be immediately discharged in air, by the first non-woven bag obtained after absorption, the second nonwoven
Cloth bag and third non-woven bag, which remove, carries out recycling processing；
（4）It recycles
Absorbing liquid collecting tank 2 and spray liquid collecting tank 6 are transported to and recycle area, the primary absorbent liquid in absorbing liquid collecting tank 2
It is pumped in process tank 8 from the bottom of process tank 8, the second spray liquid in spray liquid collecting tank 6 is pumped from the bottom of process tank 8
To process tank 8, acid solution is added into process tank 8 and adjusts pH to 6.8, the organic exhaust gas in tank 8 to be processed overflows and is arranged certainly
Pipeline at 8 top of process tank enters combustion zone 9；
The first non-woven bag, the second non-woven bag and third non-woven bag after removing are put into combustion zone 9, separately to combustion zone
Zeolite powder and copper oxide nano particle are added in 9；First non-woven bag, the second non-woven bag and third non-woven bag total amount,
The mass ratio of the organic exhaust gas, zeolite powder and the copper oxide nano particle that overflow from process tank 8 is 100:25:1:0.4；
Sufficient air is filled with to combustion zone 9 and is burnt at 225 DEG C, and the thermal energy to burn is recycled by heat exchange.
Embodiment 2：A kind of VOCs treatment technique, difference from example 1 is that, stainless steel waveform filler
Upper to be coated with one layer of absorbed layer, absorbed layer is prepared by the following method：By styrene, methyl methacrylate, gelatin, starch and
Toluene in mass ratio 100:30:0.5:0.3:2 mixing, be warming up to softening, be stirred to react 1.5hr to get.
Embodiment 3：A kind of VOCs treatment technique the difference is that, is gone back with embodiment 2 in the second non-woven bag
Filled with sodium alginate and silicon mosanom, active carbon, calcium chloride powder, nanoscale polyaluminium chloride, polyacrylonitrile fibre, sodium alginate
Mass ratio with silicon mosanom is 100:5:10:2:1:1；
Sodium alginate, silicon mosanom and sodium bicarbonate, active carbon, calcium chloride powder, nanoscale are also filled in third non-woven bag
The quality of polyaluminium chloride, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder, wheat bran, sodium alginate, silicon mosanom and sodium bicarbonate
Than being 100:5:10:2:1:2:2:1:1:3.
Embodiment 4：A kind of VOCs treatment technique, with embodiment 3 the difference is that, referring to Fig. 3, adsorption tower 7
Top adsorption tanks 10 again are connected with by pipeline, in adsorption tower 7 after three-level absorption obtained gas phase from adsorption tanks 10 1 again
The entrance of side enters in adsorption tanks 10 again, the adsorption plate suction-operated again through being vertically arranged in the adsorption tanks 10 again, so
The outlet from adsorption tanks 10 again far from inlet side drains into air afterwards；
Again adsorption plate include be adapted with 10 longitudinal section of adsorption tanks again adsorb support plate again and coated in adsorbing support plate two again
The coating of side, coating with a thickness of 4mm, coating includes the magnesium chloride of the magnesia of 22wt%, the aluminium oxide of 32wt% and 46wt%.
Embodiment 5：A kind of VOCs treatment technique, includes the following steps：
（1）Primary absorbent
Organic exhaust gas enters in primary absorbent tank 1 from the bottom of primary absorbent tank 1, and the gas phase absorbed is inhaled from setting in primary
The pipeline at 1 top of closed cans drains into absorption tower 3, and stainless steel waveform filler is equipped in primary absorbent tank 1；In primary absorbent tank 1
Full primary absorbent liquid is filled, primary absorbent liquid includes the release paper of the polytetrafluoroethylene (PTFE) of SDS, 0.2wt% of 0.6wt%, 0.2wt%
Consider the saturated limewater with 99.0% to be worth doing；The liquid throughput ratio of primary absorbent liquid and organic exhaust gas is 1:700；
After the organic exhaust gas concentration in primary tourie 1 increases to 10g/l, 1 bottom of primary absorbent tank is arranged in primary absorbent liquid certainly
Pipeline enter absorbing liquid collecting tank 2；
（2）Lye absorbs
The gas phase obtained after primary absorbent enter in absorption tower 3 from the bottom on absorption tower 3 successively carry out first order spray-absorption and
Second level spray-absorption, the middle part and top on absorption tower 3 spray respectively from the first alkali liquid tank 4 the first spray liquid and come from
In the second spray liquid of the second alkali liquid tank 5；The tubes rows at 3 top of absorption tower are arranged in the gas phase obtained after second level spray-absorption certainly
To adsorption tower 7；The gas phase obtained after the gas phase, the second spray liquid and the primary absorbent that are obtained after first spray liquid and primary absorbent
Liquid throughput ratio be 1:250；
The second spray liquid in second alkali liquid tank 5 is the fresh lye from external environment, and fresh lye is saturated limewater；Second level
Enter in the first alkali liquid tank 4 after the liquid phase mixing obtained after spray-absorption and be used as the first spray liquid, when in the first spray liquid
After VOCs concentration increases to 5g/l, the first spray liquid enters spray liquid collecting tank 6 from the pipeline that 4 bottom of the first alkali liquid tank is arranged in；
（3）Absorption
The gas phase obtained after second level spray-absorption enters in adsorption tower 7 from the bottom of adsorption tower 7 successively carries out first order absorption,
Secondary absorption and third level absorption, be successively arranged on bottom-up direction in adsorption tower 7 first adsorption plate, the second adsorption plate and
Third adsorption plate；
First adsorption plate include with 7 cross section of adsorption tower be adapted the first support plate and be mounted on the first support plate simultaneously and adsorption tower
The first adaptable non-woven bag of 7 cross sections, the first non-woven bag is interior to be filled with active carbon；
Second adsorption plate include with 7 cross section of adsorption tower be adapted the second support plate and be mounted on the second support plate simultaneously and adsorption tower
The second adaptable non-woven bag of 7 cross sections, the second non-woven bag are interior polychloride filled with active carbon, calcium chloride powder, nanoscale
The mixture of aluminium and polyacrylonitrile fibre, active carbon, calcium chloride powder, nanoscale polyaluminium chloride and polyacrylonitrile fibre mass ratio
It is 100:6:12:3；
Third adsorption plate include with 7 cross section of adsorption tower be adapted third support plate and be mounted on third support plate simultaneously and adsorption tower
The adaptable third non-woven bag in 7 cross sections, third non-woven bag are interior polychloride filled with active carbon, calcium chloride powder, nanoscale
Aluminium, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mixture, active carbon, calcium chloride powder, nanoscale polyaluminium chloride,
Polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mass ratio be 100:6:12:3:2:3:3；
The gas phase obtained after three-level absorption can be immediately discharged in air, by the first non-woven bag obtained after absorption, the second nonwoven
Cloth bag and third non-woven bag, which remove, carries out recycling processing；
（4）It recycles
Absorbing liquid collecting tank 2 and spray liquid collecting tank 6 are transported to and recycle area, the primary absorbent liquid in absorbing liquid collecting tank 2
It is pumped in process tank 8 from the bottom of process tank 8, the second spray liquid in spray liquid collecting tank 6 is pumped from the bottom of process tank 8
To process tank 8, acid solution is added into process tank 8 and adjusts pH to 7.0, the organic exhaust gas in tank 8 to be processed overflows and is arranged certainly
Pipeline at 8 top of process tank enters combustion zone 9；
The first non-woven bag, the second non-woven bag and third non-woven bag after removing are put into combustion zone 9, separately to combustion zone
Zeolite powder and copper oxide nano particle are added in 9；First non-woven bag, the second non-woven bag and third non-woven bag total amount,
The mass ratio of the organic exhaust gas, zeolite powder and the copper oxide nano particle that overflow from process tank 8 is 100:30:2:0.5；
Sufficient air is filled with to combustion zone 9 and is burnt at 200 DEG C, and the thermal energy to burn is recycled by heat exchange.
Embodiment 6：A kind of VOCs treatment technique, with embodiment 5 the difference is that, stainless steel waveform filler
Upper to be coated with one layer of absorbed layer, absorbed layer is prepared by the following method：By styrene, methyl methacrylate, gelatin, starch and
Toluene in mass ratio 100:35:0.6:0.4:3 mixing, be warming up to softening, be stirred to react 2.0hr to get.
Embodiment 7：A kind of VOCs treatment technique the difference is that, is gone back with embodiment 6 in the second non-woven bag
Filled with sodium alginate and silicon mosanom, active carbon, calcium chloride powder, nanoscale polyaluminium chloride, polyacrylonitrile fibre, sodium alginate
Mass ratio with silicon mosanom is 100:6:12:3:2:2；
Sodium alginate, silicon mosanom and sodium bicarbonate, active carbon, calcium chloride powder, nanoscale are also filled in third non-woven bag
The quality of polyaluminium chloride, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder, wheat bran, sodium alginate, silicon mosanom and sodium bicarbonate
Than being 100:6:12:3:2:3:3:2:2:4.
Embodiment 8：A kind of VOCs treatment technique, the difference is that, the top of adsorption tower 7 is logical with embodiment 7
It crosses pipeline and is connected with adsorption tanks 10 again, entrance of the gas phase obtained after three-level absorption in adsorption tower 7 from 10 side of adsorption tanks again
Into in adsorption tanks 10 again, then the adsorption plate suction-operated again through being vertically arranged in the adsorption tanks 10 again is inhaled again certainly
Outlet on attached tank 10 far from inlet side drains into air；
Again adsorption plate include be adapted with 10 longitudinal section of adsorption tanks again adsorb support plate again and coated in adsorbing support plate two again
The coating of side, coating with a thickness of 5mm, coating includes the magnesium chloride of the magnesia of 20wt%, the aluminium oxide of 30wt% and 50wt%.
Performance characterization
1, control group
Control group 1：A kind of organic waste-gas purification processing method, difference from example 1 is that, the first non-woven bag,
It is only filled with active carbon in two non-woven bags and third non-woven bag, deletes primary absorbent.
Control group 2：A kind of waste gas processing method, referring to the embodiment of CN107930313A.
2, concentration of emission is tested
With 21mg/m3Phthalic acid ester, 40mg/m3Dimethicone, 45mg/m3Benzene, 87mg/m3Toluene, 130mg/m3Diformazan
Benzene, 130mg/m3Phenols, 60mg/m3Formaldehyde, 160mg/m3Acetaldehyde, 32mg/m3Acrylonitrile, 31mg/m3Methacrylaldehyde, 130mg/m3First
Alcohol, 44mg/m3Phenyl amines, 80mg/m3Chlorobenzene class, 35mg/m3Nitrobenzene and 100mg/m3The mixed gas of vinyl chloride is as just
Beginning organic exhaust gas is handled through different test groups respectively, test specimens is taken in circumference extracellular concentration highest point, with Agilent GC-FID/MS
The TH-300B atmospheric environment volatile organic matter line monitoring system of detection system is that test equipment carries out concentration determination.Parallel examination
It tests 5 times, is averaged.Test group is respectively embodiment 1-8 and control group 1-2.With《Discharge standard of air pollutants》
（GB16297-1996）In uncontrollable discharge monitoring concentration limit be used as with reference to discharge upper concentration.
Test result is as shown in table 1.Table 1 is shown：
（1）Compared to initial organic exhaust gas, after tested phthalic acid ester after group processing, dimethicone, benzene,toluene,xylene,
Phenols, formaldehyde, acetaldehyde, acrylonitrile, methacrylaldehyde, methanol, phenyl amines, chlorobenzene class, the concentration of nitrobenzene and vinyl chloride have greatly
Amplitude reduction illustrates that test group can play preferable organic waste-gas purification；
（2）Compared to the control group 1 and control group 2, through embodiment 1-8 treated phthalic acid ester, dimethicone, benzene, first
Benzene, dimethylbenzene, phenols, formaldehyde, acetaldehyde, acrylonitrile, methacrylaldehyde, methanol, phenyl amines, chlorobenzene class, nitrobenzene and vinyl chloride
Concentration is further greatly lowered, and illustrates to be greatly improved organic waste-gas purification ability using application scheme；
（3）Compared to embodiment 1（Or embodiment 5）, through embodiment 2（Or embodiment 6）Organic waste-gas purification ability that treated into
One step increases；Compared to embodiment 2（Or embodiment 6）, through embodiment 3（Or embodiment 7）Organic waste-gas purification ability that treated
It further increases；Compared to embodiment 3（Or embodiment 7）, through embodiment 4（Or embodiment 8）Treated organic waste-gas purification energy
Power further increases.
The test of 1 concentration of emission of table（Unit：mg/m3）
3, combustion efficiency is tested
While concentration determination, in test group after combustion zone is disposed, test combustion zone outlet VOCs concentration with
And CO concentration.
Test result is as shown in table 2.Table 2 is shown：
（1）Compared to the control group 1, phthalic acid ester, dimethicone, benzene,toluene,xylene, phenol after embodiment 1-8 processing
Class, formaldehyde, acetaldehyde, acrylonitrile, methacrylaldehyde, methanol, phenyl amines, chlorobenzene class, the quantity combusted of nitrobenzene and vinyl chloride are big（Explanation
Combustion utilization efficiency is high）, and its CO concentration is low（Illustrate that burning conversion ratio is big）；
（2）Compared to embodiment 1（Or embodiment 5）, through embodiment 2（Or embodiment 6）The quantity combusted of treated organic exhaust gas into
One step increases, and CO concentration further decreases；Compared to embodiment 2（Or embodiment 6）, through embodiment 3（Or embodiment 7）Treated
The quantity combusted of organic exhaust gas further increases, and CO concentration further decreases；Compared to embodiment 3（Or embodiment 7）, through embodiment 4
（Or embodiment 8）The quantity combusted of treated organic exhaust gas further increases, and CO concentration further decreases.
The test of 2 combustion efficiency of table（Unit：mg/m3）
The specific implementation of the invention is not to be limited to these illustrations for the above content, for the technical field of the invention
For those of ordinary skill, without departing from the inventive concept of the premise, a number of simple deductions or replacements can also be made, all answers
When being considered as belonging to present invention scope of patent protection determined by the appended claims.
Claims (4)
1. a kind of VOCs treatment technique, which is characterized in that include the following steps：
（1）Primary absorbent
Organic exhaust gas enters in primary absorbent tank (1) from the bottom of primary absorbent tank (1), and the gas phase absorbed is from being arranged first
Pipeline at the top of grade tourie (1) drains into absorption tower (3), and stainless steel waveform filler is equipped in the primary absorbent tank (1)；
Fill full primary absorbent liquid in the primary absorbent tank (1), the primary absorbent liquid include the SDS of 0.5 ~ 0.6wt%, 0.1 ~
The polytetrafluoroethylene (PTFE) of 0.2wt%, the release paper scrap of 0.1 ~ 0.2wt% and 99.0 ~ 99.3% saturated limewater；Primary absorbent liquid and
The liquid throughput ratio of organic exhaust gas is 1:700~800；
After the organic exhaust gas concentration in primary tourie (1) increases to 10g/l, setting primary absorbent tank (1) certainly of primary absorbent liquid
The pipeline of bottom enters absorbing liquid collecting tank (2)；
（2）Lye absorbs
The gas phase obtained after primary absorbent enters in absorption tower (3) from the bottom of absorption tower (3) successively carries out first order spray suction
Receipts and second level spray-absorption, the middle part and top of the absorption tower (3) spray first from the first alkali liquid tank (4) respectively
Spray liquid and the second spray liquid from the second alkali liquid tank (5)；The gas phase obtained after second level spray-absorption is being absorbed from setting
Pipeline at the top of tower (3) drains into adsorption tower (7)；The gas phase that is obtained after first spray liquid and primary absorbent, the second spray liquid and
The liquid throughput ratio of the gas phase obtained after primary absorbent is 1:200~250；
The second spray liquid in second alkali liquid tank (5) is the fresh lye from external environment, and fresh lye is saturated limewater；Two
Enter after the liquid phase mixing obtained after grade spray-absorption and be used as the first spray liquid in the first alkali liquid tank (4), when in the first spray liquid
VOCs concentration increase to 5g/l after, the first spray liquid enters spray liquid collection from pipeline in the first alkali liquid tank (4) bottom is arranged
Tank (6)；
（3）Absorption
The gas phase obtained after second level spray-absorption enters from the bottom of adsorption tower (7) successively carries out first order suction in adsorption tower (7)
The absorption of the attached, second level and third level absorption, be successively arranged on bottom-up direction in the adsorption tower (7) the first adsorption plate,
Second adsorption plate and third adsorption plate；
First adsorption plate include with the adsorption tower (7) cross section be adapted the first support plate and be mounted on the first support plate and with
The first adaptable non-woven bag of adsorption tower (7) cross section, first non-woven bag is interior to be filled with active carbon；
Second adsorption plate include with adsorption tower (7) cross section be adapted the second support plate and be mounted on the second support plate and with absorption
The second adaptable non-woven bag of tower (7) cross section, the second non-woven bag are interior poly- filled with active carbon, calcium chloride powder, nanoscale
The mixture of aluminium chloride and polyacrylonitrile fibre, the matter of active carbon, calcium chloride powder, nanoscale polyaluminium chloride and polyacrylonitrile fibre
Amount is than being 100:5~6:10~12:2~3；
Third adsorption plate include with adsorption tower (7) cross section be adapted third support plate and be mounted on third support plate and with absorption
The adaptable third non-woven bag in tower (7) cross section, third non-woven bag are interior poly- filled with active carbon, calcium chloride powder, nanoscale
Aluminium chloride, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran mixture, active carbon, calcium chloride powder, nanoscale polychlorostyrene
The mass ratio for changing aluminium, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder and wheat bran is 100:5~6:10~12:2~3:1~2:2~3: 2
~3；
The gas phase obtained after three-level absorption can be immediately discharged in air, by the first non-woven bag obtained after absorption, the second nonwoven
Cloth bag and third non-woven bag, which remove, carries out recycling processing；
（4）It recycles
Absorbing liquid collecting tank (2) and spray liquid collecting tank (6) are transported to and recycle area, the primary in absorbing liquid collecting tank (2)
Absorbing liquid is pumped in process tank (8) from the bottom of process tank (8), and the second spray liquid in spray liquid collecting tank (6) is from processing
The bottom of tank (8) is pumped in process tank (8), and acid solution is added into process tank (8) and adjusts pH to 6.8 ~ 7.0, tank (8) to be processed
Interior organic exhaust gas overflows and enters combustion zone (9) from the pipeline being arranged at the top of process tank (8)；
The first non-woven bag, the second non-woven bag and third non-woven bag after removing are put into combustion zone (9), separately to burning
Zeolite powder and copper oxide nano particle are added in area (9)；First non-woven bag, the second non-woven bag and third non-woven bag it is total
Amount, the organic exhaust gas overflowed from process tank (8), zeolite powder and copper oxide nano particle mass ratio be 100:25~30:1~2:
0.4~0.5；
Sufficient air is filled with to combustion zone (9) and is burnt at 200 ~ 225 DEG C, and the thermal energy to burn is sharp again by heat exchange
With.
2. a kind of VOCs treatment technique according to claim 1, which is characterized in that the stainless steel waveform filler
Upper to be coated with one layer of absorbed layer, the absorbed layer is prepared by the following method：By styrene, methyl methacrylate, gelatin, shallow lake
Powder and toluene in mass ratio 100:30~35:0.5~0.6:0.3~0.4:2 ~ 3 mixing, are warming up to softening, it is stirred to react 1.5 ~
2.0hr to get.
3. a kind of VOCs treatment technique according to claim 2, which is characterized in that also filled up in the second non-woven bag
There are sodium alginate and silicon mosanom, active carbon, calcium chloride powder, nanoscale polyaluminium chloride, polyacrylonitrile fibre, sodium alginate and silicon
The mass ratio of mosanom is 100:5~6:10~12:2~3:1~2:1~2；
Sodium alginate, silicon mosanom and sodium bicarbonate, active carbon, calcium chloride powder, nanoscale are also filled in third non-woven bag
The quality of polyaluminium chloride, polyacrylonitrile fibre, polyvinyl alcohol, ceramic powder, wheat bran, sodium alginate, silicon mosanom and sodium bicarbonate
Than being 100:5~6:10~12:2~3:1~2:2~3:2~3:1~2:1~2:3~4.
4. a kind of VOCs treatment technique according to claim 3, which is characterized in that the top of the adsorption tower (7)
Adsorption tanks (10) are connected with again by pipeline, the gas phase obtained after adsorption tower (7) interior three-level absorption is from adsorption tanks (10) one again
The entrance of side enters in adsorption tanks (10) again, and the absorption of adsorption plate again through being vertically arranged in the adsorption tanks (10) again is made
With then the outlet from adsorption tanks again (10) far from inlet side drains into air；
Again adsorption plate include be adapted with (10) longitudinal section of adsorption tanks again adsorb support plate again and coated in adsorbing support plate again
The coating of two sides, the coating with a thickness of 4 ~ 5mm, the coating includes the oxidation of the magnesia, 30 ~ 32wt% of 20 ~ 22wt%
The magnesium chloride of aluminium and 46 ~ 50wt%.
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