CN109126447A - A kind of lyosoption and its application method handling low-concentration organic exhaust gas - Google Patents

A kind of lyosoption and its application method handling low-concentration organic exhaust gas Download PDF

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Publication number
CN109126447A
CN109126447A CN201811091689.8A CN201811091689A CN109126447A CN 109126447 A CN109126447 A CN 109126447A CN 201811091689 A CN201811091689 A CN 201811091689A CN 109126447 A CN109126447 A CN 109126447A
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parts
water
exhaust gas
organic exhaust
layer
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徐甦
束勇
邓海波
金叶
丁青松
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Zhejiang Hanbang Environmental Protection Technology Co Ltd
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Zhejiang Hanbang Environmental Protection Technology Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8678—Removing components of undefined structure
    • B01D53/8687—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
    • B01D53/38—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
    • B01D53/46—Removing components of defined structure
    • B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
    • 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
    • B01D53/80—Semi-solid phase processes, i.e. by using slurries
    • 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
    • B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • 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
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/20—Metals or compounds thereof
    • B01D2255/207—Transition metals
    • B01D2255/20707—Titanium
    • 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
    • B01D2257/702—Hydrocarbons
    • B01D2257/7027—Aromatic hydrocarbons
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physical Water Treatments (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention belongs to technical field of waste gas treatment, it is capable of the lyosoption of efficient absorption low-concentration organic exhaust gas more particularly to one kind, it is made of the raw material of following parts by weight: water hyacinth fresh leaf treatment fluid: 0.2-10 parts, 0.8-1.2mol/L potassium hydroxide solution: 3-8 parts, nano-titanium dioxide: 0.005-0.01 parts, water: 80-86 parts, carbon tetrachloride: 7-15 parts.It is divided into two layers after organic exhaust gas lyosoption liquid level stabilizing of the invention, bottom is carbon tetrachloride, and upper layer is mixed solution.Three-layer liquid face in compared with the prior art will stablize, and under same liquid level, absorption efficiency is unaffected.Nano-titanium dioxide can be H majority of organic pollutants photocatalytic degradation as catalysis material20 and CO2Nano-titanium dioxide is first mixed and made into suspension with water, after injecting tank body, it suspends in water, and it is affected by gravity and can gradually be attached on the nanometer strainer of tank base, inner wall is equipped with the ultraviolet lamp of 365nm in tourie, the photocatalysis Decomposition of organic exhaust gas can be promoted to act on by emitting assigned frequency light.

Description

A kind of lyosoption and its application method handling low-concentration organic exhaust gas
Technical field
The invention belongs to technical field of waste gas treatment, and in particular to one kind is capable of the suction of efficient absorption low-concentration organic exhaust gas Receive solvent and preparation method thereof.
Background technique
Atmosphere pollution is global one of environmental problem most outstanding at present, and the main source of pollutant is industrial waste gas, Various organic compounds can be generated in industrial production, mainly include various hydro carbons, alcohols, aldehydes, acids, ketone and amine etc.. The source of these exhaust gas is very extensive, some of chemical industries petrochemical industry, the exhaust of organic synthesis equipment, printing industry print Organic solvent in ink, the spray painting of machinery industry machinery, the smell that metal product generates, spray painting, the drying oven casting of automobile industry automobile The exhaust of part production equipment, hardware, the exhaust of family property factory spraying equipment etc..Organic exhaust gas be detrimental to health be it is generally acknowledged, have Machine exhaust gas also will cause serious atmosphere pollution.Therefore it is extremely urgent VOCs treatment to be carried out using appropriate method.
Processing low-concentration organic exhaust gas generallys use activated carbon adsorber either photodissociation formula waste gas purification apparatus, opposite to save About cost, and waste gas purification can achieve and be checked and accepted by environmental impact assessment, but its effect is often indefinite.For example photodissociation formula is useless Air purifying apparatus, fluorescent tube are easy to be covered by the sediment in exhaust gas, are easy to lose due photodissociation or so, cleaning fluorescent tube is also work Measure it is bigger, under normal circumstances can only by test tail gas just can know that whether its purification device works；And active carbon is inhaled Adsorption device, effect is unstable, generally poor for the stability of waste gas pollution control and treatment, be easy early period waste gas pollution control and treatment it is up to standard, with The passage of time, active carbon failure, the cost of activity recovery is also higher.
The main composition of spraying exhaust gas is benzene,toluene,xylene and some dust particles etc., most of spraying Exhaust gas further comprises ethyl acetate, butanone, isopropanol and some ether materials.Although organic exhaust gas is usual in organic solvent With biggish solubility, but current liquid for absorbing waste organic gas is generally based on aqueous solution, this is because organic solvent is inflammable It is explosive, and it is not readily separated recycling, cost is also relatively high.And water is cheap and reserves are more abundant, safety coefficient is high, is easy Organic exhaust gas, which absorbs, is easier separation Reusability, and therefore, some surfactants with solubilising power are commonly used in organic waste In aspiration liquid.
The organic exhaust gas of high concentration generally uses combustion method to handle, and the organic exhaust gas of low concentration is not suitable for, in catalyst Under the action of, make the hydrocarbon in organic exhaust gas rapid oxidation Cheng Shui and carbon dioxide under the conditions of temperature is lower, reaches To the purpose of improvement.Production by Catalytic Combustion Process processing industrial organic exhaust gas is the technology occurred late 1940s.Current Domestic Catalyst used in outer Production by Catalytic Combustion Process is broadly divided into noble metal type and two kinds of compound oxide type, and noble metal type catalyst is by expensive Pt metal, Pd etc. are made, and such catalyst activity is good, the service life is long；Metal composite oxide type catalyst is mainly Cu, Mn Deng metal oxide, such catalyst is cheap, can reach the effect of noble metal catalyst under certain condition.By cheap Alumina globule be carrier, it is one of or several with the mixture etc. of aluminium oxide, cerium oxide, gallium oxide, cerium zirconium sosoloid Oxide is as coating, using Pd as active component.Although combustion method definite effect, back segment still has the organic of low concentration Exhaust gas release, there has been no specific techniques to be directed to organic exhaust gas back segment tail gas at present, after combustion method is disposed, to remaining tail gas The specific aim recycled absorbs and the present invention provides one of special administration scheme.
Patent of invention " a kind of liquid for absorbing waste organic gas and preparation method thereof " (publication number: CN108211670 A) discloses A kind of absorption process of organic exhaust gas, the liquid for absorbing waste organic gas is placed in closed tourie, with air inlet pipe by organic waste Gas is delivered to the carbon tetrachloride layer of the liquid for absorbing waste organic gas outside tourie, and organic exhaust gas is successively by carbon tetrachloride layer, benzene Aqueous sodium formate solution layer and ethyl propionate layer successively absorb, and unabsorbed gases is escaped from ethyl propionate layer, arrange from gas outlet Out outside tank.Its three layers absorption are simultaneously unstable, in practice, it is easy to because of the influence of bubble, upper layer ethyl propionate layer occur muddy Turbid influence absorbs, and in the case that depth is inadequate, is easy to be mutually dissolved with carbon tetrachloride layer；It is useless to absorb organic matter for ethyl propionate simultaneously After gas ingredient, stability decline, adsorption capacity can be reduced.
With solvent absorption+photocatalysis, collective effect administers the technique of organic exhaust gas in same waste gas absorption tank, at present still It has not been reported.
Summary of the invention
The purpose of the present invention is being directed to above-mentioned technical problem of the existing technology, the heavy contaminations rows such as spraying spray painting are provided The lyosoption and its application method of the low-concentration organic exhaust gas of industry, the solvent are also applied for direct combustion method processing organic exhaust gas The lyosoption of tail gas is generated, for organic exhaust gas after combustion method processing, subsequent a small amount of organic exhaust gas can also be by this hair Bright scheme is handled.Present invention process simply invest it is small, can reuse and handle thoroughly.
Solving technical solution used by its technical problem is:
A kind of lyosoption handling low-concentration organic exhaust gas, is made of the raw material of following parts by weight:
Water hyacinth fresh leaf treatment fluid: 0.2-10 parts
0.8-1.2mol/L potassium hydroxide solution: 3-8 parts
Nano-titanium dioxide: 0.005-0.01 parts
Water: 80-86 parts
Carbon tetrachloride: 7-15 parts.
It is divided into two layers after organic exhaust gas lyosoption liquid level stabilizing of the invention, bottom is carbon tetrachloride, and upper layer is mixing Solution.Three-layer liquid face in compared with the prior art will stablize, and under same liquid level, absorption efficiency is unaffected.
Nano-titanium dioxide can be H majority of organic pollutants photocatalytic degradation as catalysis material20 and CO2, Nano-titanium dioxide is first mixed and made into suspension with water, after injecting tank body, suspends in water, and be affected by gravity and can gradually adhere to In on the nanometer strainer of tank base, inner wall is equipped with the ultraviolet lamp of 365nm in tourie, can be with by transmitting assigned frequency light Promote the photocatalysis Decomposition effect of organic exhaust gas.
Carbon tetrachloride: the benzene in organic exhaust gas has the characteristics that volatile, inflammable, and steam has an explosivity, toluene (chemistry Molecular formula C7H8), dimethylbenzene (chemical molecular formula C8H10) it is homologue.Therefore the present invention is using the tetrachloro that can quickly absorb benzene Change carbon as absorbent solution substrate, carbon tetrachloride molecular weight 153.84, than most of aqueous solution weight, and it is immiscible with water.Benzene Density ratio water is small, carbon tetrachloride density ratio water is big, carbon tetrachloride, benzene are all not soluble in water.
After carbon tetrachloride dissolves enough organic matter benzene, liquid level can rise, and density also can accordingly reduce, mixed solution When density is approximately equal to water layer, liquid position can turn upside down, at this point, can by lower part valve, take out respectively water layer and Carbon tetrachloride layer.It can also need, dissolution goods and materials be detected, to see whether to need to carry out solution replacement.
Preferably, the lyosoption is made of the raw material of following parts by weight:
Water hyacinth fresh leaf treatment fluid: 6-8 parts
1.0mol/L potassium hydroxide solution: 5-6 parts
Nano-titanium dioxide: 0.0075 part
Water: 84 parts
Carbon tetrachloride: 12 parts.
Preferably, the present invention used in water hyacinth fresh leaf treatment fluid the preparation method is as follows:
S1: harvesting half a year to annual water hyacinth plant from river, drain away the water, fetch water cucurbit balloon sites and the above water Cucurbit fresh leaf part；
S2: being broken into disintegrating slag for the water hyacinth fresh leaf of acquirement, and disintegrating slag water content is 85-89.7%,
S3: by the water hyacinth balloon sites of acquirement, obtaining the axis of air bag and air bag or more 0.5cm~1cm, dry using freezing Dry mode is handled, and so that its moisture is reduced to 20% hereinafter, being then crushed to the sieving of 60 mesh, 0.05%~0.2% mass of addition is divided Several chitosans is uniformly mixed, water hyacinth air bag fiber beam tube is made；
S4: 4~6 parts of cucurbit air bag fiber beam tube of water intaking, 1.9~2.2 parts of nanometer aluminium powder, 0.1~0.3 part of tea polyphenols and benzoic acid It 0.8-1.5 parts of sodium, is uniformly mixed, using Far-infrared Heating, the temperature of mixture is made to reach 65 DEG C~77 DEG C, and filled Divide stirring to stir, during which sprays into the 0.1mol/L potassium hydroxide solution of 0.10%~0.22% mixture quality, keep mixture abundant It absorbs, after continuing stirring 10-20 minutes, takes out, stand after twenty minutes, take upper layer filtrate, be water hyacinth fresh leaf treatment fluid.
A kind of application of claim processing low-concentration organic exhaust gas lyosoption, concrete application method are as follows:
S1: tourie is placed under 10 DEG C of environment, at the top of the tourie equipped with air inlet be connected to air inlet pipe and with out The gas outlet of tracheae connection, the air inlet pipe is passed through absorption pot bottom, using catheter by the carbon tetrachloride of formula ratio through feed liquor Mouth imports in tourie, and liquid level did not had air inlet pipe bottom surface 2cm or more, and the nano-titanium dioxide of formula ratio is mixed into, and formula is added The water of amount, then the water hyacinth fresh leaf treatment fluid of formula ratio is imported in tourie, 30min layering is stood, recycles catheter will The potassium hydroxide of formula ratio imports in tourie, stands 20min, withdraws from catheter, closes inlet, closes cold air, gradually rises To room temperature；
S2: will be mixed with the nitrogen of toluene vapor and import through air inlet pipe and absorb the carbon tetrachloride layer of pot bottom, carbon tetrachloride layer and mixed The interface for closing solution layer, which occurs disturbing and generate a large amount of bubbles, to be ramped up, and carbon tetrachloride layer, mixed solution layer are passed sequentially through, and is carried out Second level absorbs, and unabsorbed gases is escaped from escape pipe.
A kind of application handling low-concentration organic exhaust gas lyosoption, organic waste that treated for handling direct combustion method Tail-gas, concrete application method are as follows:
S1: organic exhaust gas is introduced by combustion chamber using air-introduced machine；
S2: being burnt using coal gas mixing organic exhaust gas, and ignition temperature is 800-1000 DEG C；
S3: cooling down to the gas after burning or carrying out heat recovery makes its temperature drop to 60 DEG C or less；
S4: the lyosoption absorption of organic exhaust gas is finally carried out, discharge:
S41: tourie is placed under 10 DEG C of environment, at the top of the tourie equipped with air inlet be connected to air inlet pipe and with out The gas outlet of tracheae connection, the air inlet pipe is passed through absorption pot bottom, using catheter by the carbon tetrachloride of formula ratio through feed liquor Mouth imports in tourie, and liquid level did not had air inlet pipe bottom surface 2cm or more, and the nano-titanium dioxide of formula ratio is mixed into, and formula is added The water of amount, then the water hyacinth fresh leaf treatment fluid of formula ratio is imported in tourie, 30min layering is stood, recycles catheter will The potassium hydroxide of formula ratio imports in tourie, stands 20min, withdraws from catheter, closes inlet, closes cold air, gradually rises To room temperature；
Gas after step S3 cooling: being imported the carbon tetrachloride layer for absorbing pot bottom by S42 through air inlet pipe, carbon tetrachloride layer and mixed The interface for closing solution layer, which occurs disturbing and generate a large amount of bubbles, to be ramped up, and carbon tetrachloride layer, mixed solution layer are passed sequentially through, and is carried out Second level absorbs, and unabsorbed gases is escaped from escape pipe.
The volume ratio of coal gas described in step (2) and organic exhaust gas is (2-3): 10.
Preferably, the active carbon honeycomb stratum reticulare of one layer of 10-20mm thickness is also placed by mixed solution layer liquid level top layer.
The active carbon honeycomb stratum reticulare of a thickness 10-20mm thickness is placed by liquid level top layer.
The beneficial effects of the present invention are: present invention process is simply invested small, it can be adapted for the tail gas of a variety of organic exhaust gas Processing system, processing is thoroughly and treatment effeciency is high, is particularly suitable for the VOCs treatment containing benzene.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tourie of the invention.
1, air inlet pipe；2, inlet；3, liquid valve；4, escape pipe；5, active carbon honeycomb stratum reticulare；6, water hyacinth fresh leaf is handled Liquid and water mixed layer；7, carbon tetrachloride layer；8, drawable type nano metal strainer；9, the ultraviolet lamp of 365nm.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention will be further explained in detail.
Embodiment 1:
A kind of lyosoption handling low-concentration organic exhaust gas, is made of the raw material of following parts by weight:
Water hyacinth fresh leaf treatment fluid: 0.2 part
1.2mol/L potassium hydroxide solution: 3 parts
Nano-titanium dioxide: 0.005 part
Water: 80 parts
Carbon tetrachloride: 7 parts；
Water hyacinth fresh leaf treatment fluid used in the present embodiment the preparation method is as follows:
S1: harvesting half a year to annual water hyacinth plant from river, drain away the water, fetch water cucurbit balloon sites and the above water Cucurbit fresh leaf part；
S2: being broken into disintegrating slag for the water hyacinth fresh leaf of acquirement, and disintegrating slag water content is 85-89.7%,
S3: by the water hyacinth balloon sites of acquirement, obtaining the axis of air bag and air bag or more 0.5cm~1cm, dry using freezing Dry mode is handled, and makes its moisture be reduced to 20% to be sieved hereinafter, being then crushed to 60 mesh, the shell of 0.2% mass fraction is added Glycan is uniformly mixed, water hyacinth air bag fiber beam tube is made；
S4: 4 parts of cucurbit air bag fiber beam tube of water intaking, 1.9 parts of nanometer aluminium powder, 0.1 part of tea polyphenols and 0.8 part of sodium benzoate, stirring It is uniformly mixed, using Far-infrared Heating, the temperature of mixture is made to reach 65 DEG C, and be sufficiently stirred stirring, during which spray into The 0.1mol/L potassium hydroxide solution of 0.10% mixture quality, fully absorbs mixture, continues stirring after ten minutes, takes Out, it stands after twenty minutes, takes upper layer filtrate, be water hyacinth fresh leaf treatment fluid；
The application of the present embodiment is as follows: the tourie that capacity is 150 L being placed under 10 DEG C of environment, is furnished at the top of the tourie The air inlet being connected to air inlet pipe 1, the gas outlet that connect with escape pipe 4, the air inlet pipe 1 are passed through absorption pot bottom, using leading Liquid pipe imports carbon tetrachloride in tourie through inlet 2, and liquid level did not had air inlet pipe bottom surface 2cm or more, by g nano-titanium dioxide It is mixed into water, water is added, then water hyacinth fresh leaf treatment fluid is imported in tourie, stands 30min layering, recycle catheter will Concentration is that 1.2mol/L potassium hydroxide imports in absorption tube, stands 20min, withdraws from catheter, close inlet, closes cold air, It is gradually increased to room temperature；
The nitrogen for being mixed with 10% toluene vapor is imported to the carbon tetrachloride for absorbing pot bottom with the air inflow of 20L/h through air inlet pipe Layer, the interface of carbon tetrachloride layer and aqueous sodium benzoate solution layer, which occurs disturbing and generate a large amount of bubbles, to be ramped up, and passes sequentially through four Chlorination carbon-coating, mixed solution layer, carry out second level absorption, and unabsorbed gases is escaped from escape pipe, measured after flow speed stability Thus gas output, about 18 .10L/h calculate toluene removal rate about 95%.
Embodiment 2:
A kind of lyosoption handling low-concentration organic exhaust gas, is made of the raw material of following parts by weight:
Water hyacinth fresh leaf treatment fluid: 10 parts
0.8mol/L potassium hydroxide solution: 8 parts
Nano-titanium dioxide: 0.01 part
Water: 86 parts
Carbon tetrachloride: 15 parts.
Water hyacinth fresh leaf treatment fluid used in the present embodiment the preparation method is as follows:
S1: harvesting half a year to annual water hyacinth plant from river, drain away the water, fetch water cucurbit balloon sites and the above water Cucurbit fresh leaf part；
S2: being broken into disintegrating slag for the water hyacinth fresh leaf of acquirement, and disintegrating slag water content is 85-89.7%,
S3: by the water hyacinth balloon sites of acquirement, obtaining the axis of air bag and air bag or more 0.5cm~1cm, dry using freezing Dry mode is handled, and makes its moisture be reduced to 20% to be sieved hereinafter, being then crushed to 60 mesh, 0.05%% mass fraction is added Chitosan is uniformly mixed, water hyacinth air bag fiber beam tube is made；
S4: 6 parts of cucurbit air bag fiber beam tube of water intaking, 2.2 parts of nanometer aluminium powder, 0.3 part of tea polyphenols and 1.5 parts of sodium benzoate, stirring It is uniformly mixed, using Far-infrared Heating, the temperature of mixture is made to reach 77 DEG C, and be sufficiently stirred stirring, during which spray into The 0.1mol/L potassium hydroxide solution of 0.22% mixture quality, fully absorbs mixture, after continuing stirring 10-20 minutes, It takes out, stands after twenty minutes, take upper layer filtrate, be water hyacinth fresh leaf treatment fluid.
Concrete application method are as follows:
The tourie that capacity is 150 L is placed under 10 DEG C of environment, equipped with the air inlet being connected to air inlet pipe 1 at the top of the tourie Mouth, the gas outlet connecting with escape pipe 4, the air inlet pipe 1 is passed through absorption pot bottom, using catheter by carbon tetrachloride through feed liquor Mouth 2 imports in touries, and liquid level did not had air inlet pipe bottom surface 2cm or more, and g nano-titanium dioxide is mixed into water, water is added, then will Water hyacinth fresh leaf treatment fluid imports in tourie, stands 30min layering, and concentration is 1.2mol/L hydroxide by recycling catheter Potassium imports in absorption tube, stands 20min, withdraws from catheter, closes inlet, closes cold air, is gradually increased to room temperature；
The nitrogen for being mixed with 10% toluene vapor is imported to the carbon tetrachloride for absorbing pot bottom with the air inflow of 20L/h through air inlet pipe Layer, the interface of carbon tetrachloride layer and aqueous sodium benzoate solution layer, which occurs disturbing and generate a large amount of bubbles, to be ramped up, and passes sequentially through four Chlorination carbon-coating, mixed solution layer, carry out second level absorption, and unabsorbed gases is escaped from escape pipe, measured after flow speed stability Thus gas output, about 18 .08L/h calculate toluene removal rate about 95.5%.
Embodiment 3
A kind of lyosoption handling low-concentration organic exhaust gas, is made of the raw material of following parts by weight:
Water hyacinth fresh leaf treatment fluid: 6-8 parts
1.0mol/L potassium hydroxide solution: 5-6 parts
Nano-titanium dioxide: 0.0075 part
Water: 84 parts
Carbon tetrachloride: 12 parts.
Water hyacinth fresh leaf treatment fluid used in the present invention the preparation method is as follows:
S1: harvesting half a year to annual water hyacinth plant from river, drain away the water, fetch water cucurbit balloon sites and the above water Cucurbit fresh leaf part；
S2: being broken into disintegrating slag for the water hyacinth fresh leaf of acquirement, and disintegrating slag water content is 85-89.7%,
S3: by the water hyacinth balloon sites of acquirement, obtaining the axis of air bag and air bag or more 0.5cm~1cm, dry using freezing Dry mode is handled, and so that its moisture is reduced to 20% hereinafter, being then crushed to the sieving of 60 mesh, 0.05%~0.2% mass of addition is divided Several chitosans is uniformly mixed, water hyacinth air bag fiber beam tube is made；
S4: 5 parts of cucurbit air bag fiber beam tube of water intaking, 2.0 parts of nanometer aluminium powder, 0.2 part of tea polyphenols and 1.2 parts of sodium benzoate, stirring It is uniformly mixed, using Far-infrared Heating, the temperature of mixture is made to reach 70 DEG C, and be sufficiently stirred stirring, during which spray into The 0.1mol/L potassium hydroxide solution of 0.15% mixture quality, fully absorbs mixture, after continuing stirring 15 minutes, takes Out, it stands after twenty minutes, takes upper layer filtrate, be water hyacinth fresh leaf treatment fluid.
The active carbon honeycomb stratum reticulare of a thickness 10-20mm thickness is placed by liquid level top layer；
Concrete application method are as follows:
The tourie that capacity is 75 L is placed under 10 DEG C of environment, equipped with the air inlet being connected to air inlet pipe 1 at the top of the tourie Mouth, the gas outlet connecting with escape pipe 4, the air inlet pipe 1 is passed through absorption pot bottom, using catheter by carbon tetrachloride through feed liquor Mouth 2 imports in touries, and liquid level did not had air inlet pipe bottom surface 2cm or more, and nano-titanium dioxide is mixed into water, water is added, then will The aqueous solution of water hyacinth fresh leaf treatment fluid imports in tourie, stands 30min layering, and concentration is 1mol/L by recycling catheter Potassium hydroxide imports in absorption tube, stands 20min, withdraws from catheter, closes inlet, closes cold air, is gradually increased to room temperature.
The nitrogen for being mixed with 10% toluene vapor is passed through using method same as Example 3, measuring gas output is about Thus 17.82L/h calculates toluene removal rate about 96.8%.
Comparative example:
The tourie that capacity is 75L is placed under 10 DEG C of environment, at the top of the tourie equipped with the air inlet being connected to air inlet pipe, The gas outlet connecting with escape pipe, the air inlet pipe are passed through absorption pot bottom, tetra- chlorination of 4L that will be uniformly mixed using catheter Carbon, 42L water close inlet, close cold air, are gradually increased to room temperature.
The nitrogen for being mixed with 10% toluene vapor is passed through using method same as Example 1, measuring gas output is about 18 .64L/h, toluene removal rate about 68% is thus calculated.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.

Claims (6)

1. a kind of lyosoption for handling low-concentration organic exhaust gas, which is characterized in that the lyosoption is by following parts by weight Raw material composition:
Water hyacinth fresh leaf treatment fluid: 0.2-10 parts
0.8-1.2mol/L potassium hydroxide solution: 3-8 parts
Nano-titanium dioxide: 0.005-0.01 parts
Water: 80-86 parts
Carbon tetrachloride: 7-15 parts.
2. according to claim 1 handle low-concentration organic exhaust gas lyosoption, which is characterized in that the lyosoption by The raw material of following parts by weight forms:
Water hyacinth fresh leaf treatment fluid: 6-8 parts
1.0mol/L potassium hydroxide solution: 5-6 parts
Nano-titanium dioxide: 0.0075 part
Water: 84 parts
Carbon tetrachloride: 12 parts.
3. the lyosoption of processing low-concentration organic exhaust gas according to claim 1 or claim 2, which is characterized in that the water hyacinth Fresh leaf treatment fluid the preparation method is as follows:
S1: harvesting half a year to annual water hyacinth plant from river, drain away the water, fetch water cucurbit balloon sites and the above water Cucurbit fresh leaf part；
S2: the water hyacinth fresh leaf of acquirement is broken into disintegrating slag, disintegrating slag water content is 85-89.7%；
S3: by the water hyacinth balloon sites of acquirement, obtaining the axis of air bag and air bag or more 0.5cm~1cm, dry using freezing Dry mode is handled, and so that its moisture is reduced to 20% hereinafter, being then crushed to the sieving of 60 mesh, 0.05%~0.2% mass of addition is divided Several chitosans is uniformly mixed, water hyacinth air bag fiber beam tube is made；
S4: 4~6 parts of cucurbit air bag fiber beam tube of water intaking, 1.9~2.2 parts of nanometer aluminium powder, 0.1~0.3 part of tea polyphenols and benzoic acid It 0.8-1.5 parts of sodium, is uniformly mixed, using Far-infrared Heating, the temperature of mixture is made to reach 65 DEG C~77 DEG C, and filled Divide stirring to stir, during which sprays into the 0.1mol/L potassium hydroxide solution of 0.10%~0.22% mixture quality, keep mixture abundant It absorbs, after continuing stirring 10-20 minutes, takes out, stand after twenty minutes, take upper layer filtrate, be water hyacinth fresh leaf treatment fluid.
4. a kind of application of processing low-concentration organic exhaust gas lyosoption as claimed in claim 1 or 2, which is characterized in that specifically answer With method are as follows:
S1: tourie is placed under 10 DEG C of environment, at the top of the tourie equipped with air inlet be connected to air inlet pipe and with out The gas outlet of tracheae connection, the air inlet pipe is passed through absorption pot bottom, using catheter by the carbon tetrachloride of formula ratio through feed liquor Mouth imports in tourie, and liquid level did not had air inlet pipe bottom surface 2cm or more, and the nano-titanium dioxide of formula ratio is mixed into, and formula is added The water of amount, then the water hyacinth fresh leaf treatment fluid of formula ratio is imported in tourie, 30min layering is stood, recycles catheter will The potassium hydroxide of formula ratio imports in tourie, stands 20min, withdraws from catheter, closes inlet, closes cold air, gradually rises To room temperature；
S2: will be mixed with the nitrogen of toluene vapor and import through air inlet pipe and absorb the carbon tetrachloride layer of pot bottom, carbon tetrachloride layer and mixed The interface for closing solution layer, which occurs disturbing and generate a large amount of bubbles, to be ramped up, and carbon tetrachloride layer, mixed solution layer are passed sequentially through, and is carried out Second level absorbs, and unabsorbed gases is escaped from escape pipe.
5. a kind of application of processing low-concentration organic exhaust gas lyosoption as claimed in claim 1 or 2, which is characterized in that for locating Manage direct combustion method treated organic exhaust gas tail gas, concrete application method are as follows:
S1: organic exhaust gas is introduced by combustion chamber using air-introduced machine；
S2: being burnt using coal gas mixing organic exhaust gas, and ignition temperature is 800-1000 DEG C；
S3: cooling down to the gas after burning or carrying out heat recovery makes its temperature drop to 60 DEG C or less；
S4: the lyosoption absorption of organic exhaust gas is finally carried out, discharge:
S41: tourie is placed under 10 DEG C of environment, at the top of the tourie equipped with air inlet be connected to air inlet pipe and with out The gas outlet of tracheae connection, the air inlet pipe is passed through absorption pot bottom, using catheter by the carbon tetrachloride of formula ratio through feed liquor Mouth imports in tourie, and liquid level did not had air inlet pipe bottom surface 2cm or more, and the nano-titanium dioxide of formula ratio is mixed into, and formula is added The water of amount, then the water hyacinth fresh leaf treatment fluid of formula ratio is imported in tourie, 30min layering is stood, recycles catheter will The potassium hydroxide of formula ratio imports in tourie, stands 20min, withdraws from catheter, closes inlet, closes cold air, gradually rises To room temperature；
Gas after step S3 cooling: being imported the carbon tetrachloride layer for absorbing pot bottom by S42 through air inlet pipe, carbon tetrachloride layer and mixed The interface for closing solution layer, which occurs disturbing and generate a large amount of bubbles, to be ramped up, and carbon tetrachloride layer, mixed solution layer are passed sequentially through, and is carried out Second level absorbs, and unabsorbed gases is escaped from escape pipe；The volume ratio of coal gas described in step (2) and organic exhaust gas is (2- 3): 10.
6. the application of processing low-concentration organic exhaust gas lyosoption according to claim 4 or 5, which is characterized in that mixing is molten The active carbon honeycomb stratum reticulare of one layer of 10-20mm thickness is also placed by liquid layer liquid level top layer.
CN201811091689.8A 2018-09-19 2018-09-19 A kind of lyosoption and its application method handling low-concentration organic exhaust gas Pending CN109126447A (en)

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Application publication date: 20190104