CN109012584A - A kind of novel absorbent charcoal and the method for handling organic exhaust gas - Google Patents

A kind of novel absorbent charcoal and the method for handling organic exhaust gas Download PDF

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Publication number
CN109012584A
CN109012584A CN201810893456.3A CN201810893456A CN109012584A CN 109012584 A CN109012584 A CN 109012584A CN 201810893456 A CN201810893456 A CN 201810893456A CN 109012584 A CN109012584 A CN 109012584A
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water
absorbent charcoal
novel absorbent
exhaust gas
air
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应棋资
应妙青
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Yongkang City Lu Xiang Environmental Protection Technology Co Ltd
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Yongkang City Lu Xiang Environmental Protection Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0036Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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 absorption
    • B01D53/1487Removing organic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/14Separation 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 absorption
    • B01D53/18Absorbing units; Liquid distributors therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86Catalytic processes
    • B01D53/8668Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702Hydrocarbons
    • B01D2257/7022Aliphatic hydrocarbons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702Hydrocarbons
    • B01D2257/7027Aromatic hydrocarbons

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Health & Medical Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

A kind of method that the invention discloses novel absorbent charcoal and handles organic exhaust gas, it includes the following steps: that (1) prepares water-base catalytic absorbing liquid, it prepares as following weight percent: nanocatalyst 0.1-6%, oxidant 0.5-10%, activating agent 0.1-5%, co-catalyst 0.2-6%, surplus are water, are formulated through being mixed;(2) it using active carbon as carrier, sprays or impregnates using water-base catalytic absorbing liquid at normal temperature, time 0.5-2 hour forms liquid film in activated carbon surface, air-dries or the novel absorbent charcoal with chemisorption, physical adsorption property can be obtained in drying.After adopting the above scheme, have produce and process it is convenient, safe and reliable, absorption property is good, stable chemical performance, acid and alkali-resistance, adsorb organic matter in the gas phase, at normal temperatures and pressures oxidation be desorbed, absorption and desorption and regeneration can synchronize the advantages that being carried out continuously.

Description

A kind of novel absorbent charcoal and the method for handling organic exhaust gas
Technical field
The invention is related to a kind of improvement of active carbon, and especially a kind of adsorption and desorption regeneration, which synchronizes, to be carried out continuously Novel absorbent charcoal and the method for handling organic exhaust gas.
Background technique
Active carbon is due to the characteristics such as more micropores and huge surface tension, and there is lack of equilibrium and unsaturation on the surface of solids Molecular attraction, therefore have very big physical absorption and chemical adsorption capacity, when the surface of solids is contacted with certain fluid molecules When, these fluid molecules can be adsorbed, it is dense to gather and be maintained at the surface of solids.Therefore active carbon is often as the most classical and common Adsorbent is used to filter gas in breathing mask, industrial to be used to decolourize, make solution purity, is pharmaceutically used to absorb stomach and intestine In toxin, bacterium or gas.In waste gas purification process field, active carbon is usually used to absorption and contains benzene, alcohol, ester, gasoline class Equal volatile organic matters.
But active carbon has the following problems in absorption volatile organic waste gas: first is that active carbon main component is carbon, though Will not spontaneous combustion, but it is flammable, after the organic solvents such as absorption benzene, gasoline, it is also possible to can cause to burn in air.At active carbon Volatile organic waste gas is managed there are certain accident risk, be only limited to handle its concentration lower than its lower explosive limit 25%, temperature Organic matter in organic exhaust gas of the degree lower than 40 DEG C.Second is that since activated carbon surface usually also contains a large amount of oxygen-containing group and metal Oxide generates chemisorption in adsorbing organic exhaust process and discharges chemical reaction heat, the heat of adsorption with physical absorption, reaction The cumulative absorption to inflammable active carbon, inflammable and explosive organic exhaust gas of heat and heat of adsorption, is that activated carbon adsorption device was being run The safety problem that journey is paid special attention to.Third is that the micropore of activated carbon surface is easily blocked by the particulate matter in exhaust gas, special coating cloud The influence of particulate matter (forming aerosol) is maximum.Therefore active carbon is not suitable for spraying the processing of exhaust gas, and exhaust gas enters adsorbent equipment Particle content should be lower than 1mg/ fourth is that active carbon is after adsorption saturation is replaced, need to will using the methods of high-temperature steam stripping Impurity in used active carbon is desorbed, and it is made to restore original activity, to achieve the purpose that reuse;But again Active carbon loss is often larger during life, and adsorption capacity is decreased obviously, and the tail gas generated when regeneration will cause the two of air Secondary pollution.
For the adsorption effect for enhancing active carbon, active carbon on the make also once carried out significant improvement, mainly had: first is that bee Nest active carbon: cellular activated carbon uses common high grade activated carbon for raw material, suppresses through bee mold, high-temperature activation is fired. The features such as cellular activated carbon has reference area big, and through-hole resistance is small, and micropore is flourishing, high-adsorption-capacity, long service life, generally Using various gas purifying equipments and project of waste gas administration, in practice it has proved that, clean-up effect is better than normal activated carbon.Second is that active carbon Fiber: activated carbon fibre is by certain carbon fiber-containing, such as phenolic aldehyde base fiber, PAN base fiber, glutinous glue based fibre, pitch-based fiber Deng, by high-temperature activation, different activation method activation temperatures is different, make its surface generate nanoscale aperture, increase ratio Surface area, to change its physicochemical characteristic.It is several times to tens higher in air than normal activated carbon to organic gas adsorption capacity Times, the rate of adsorption is faster.But above-mentioned active carbon, which improves, only improves activated carbon adsorptive capacity and the rate of adsorption, and not improving it can The defects of combustion, poor safety performance, easy blocking, regeneration loss are greatly and ability declines.
In view of the above-mentioned problems, many institutes, manufacturer and knowledgeable people develop and develop, but so far not yet There is comparatively ideal product to emerge.
Summary of the invention
To overcome the above problem of the existing technology, the purpose of the invention be to provide a kind of production and processing it is convenient, It is safe and reliable, absorption property is good, stable chemical performance, acid and alkali-resistance, absorption and desorption and regeneration synchronize one kind for being carried out continuously Novel absorbent charcoal and the method for handling organic exhaust gas using novel absorbent charcoal.
The invention solves technical solution used by above-mentioned technical problem, and a kind of novel absorbent charcoal, it includes as follows Step:
(1) water-base catalytic absorbing liquid is prepared, is prepared as following weight percent: nanocatalyst 0.1-6%, oxidant 0.5- 10%, activating agent 0.1-5%, co-catalyst 0.2-6%, surplus are water, are formulated through being mixed;
(2) it using active carbon as carrier, sprays or impregnates using water-base catalytic absorbing liquid at normal temperature, time 0.5-2 hour, Activated carbon surface forms liquid film, air-dries or the novel absorbent charcoal with chemisorption, physical adsorption property can be obtained in drying, newly Type active carbon adsorbs organic matter in liquid phase, at normal temperatures and pressures oxidation desorption, absorption and desorption and regeneration can synchronize continuously into Row.
The further scheme of the invention, the nanocatalyst be macrocyclic polyether class, polyethers, quaternary ammonium salt any or Arbitrary composition, having novel absorbent charcoal, oleophylic is hydrophilic and phase transfer characteristic will be non-molten when contacting with the organic matter in exhaust gas It is transferred in aqueous phase in the organic matter of water, and carries out absorption absorption.
The further scheme of the invention, the oxidant are to contain peroxide, persulfate, oxygen hydrochlorate, ozone, hydroxyl Any or arbitrary composition of base, OH ion, by the oxidation operation adsorbed on novel absorbent charcoal point under water liquid phase state Solution is degraded at small molecule or directly, plays novel absorbent charcoal palingenesis.
The further scheme of the invention, the activating agent are polyoxyethylene-type, polyol type, Sulfonates and sulphur Any or arbitrary composition of acid esters salt has enhancing molecule activation characteristic, and acceleration is played when contacting with organic matter and is reacted Effect.
The further scheme of the invention, the co-catalyst are acid base catalysator, are activated and are lived by co-catalyst The a large amount of oxygen-containing groups of metal oxide and surface that property charcoal contains.
A method of using novel absorbent charcoal handle organic exhaust gas, including air inlet pipe, at least two groups it is in parallel with air inlet pipe The first purifying column and the second purifying column, the delivery pipe with the first purifying column and the second purifying column outlet connection, air inlet pipe has Machine exhaust gas inlet end is equipped with air-introduced machine, corresponding in the air inlet pipe that the first purifying column and the second purifying column connect to be equipped with the first wind Door and the second air door, be correspondingly provided on the first purifying column and the second purifying column novel absorbent charcoal packing layer, spray head, demister, Circulating pump places the novel absorbent charcoal by organic matter purge amount proportion, circulating pump one end and spray on novel absorbent charcoal packing layer Head connection, the other end are communicated with the water-base catalytic absorbing liquid of tower bottom.
The further scheme of the invention, when handling organic exhaust gas soluble easily in water, its work step is as follows:
(1) start the circulating pump of the first and second purifying columns simultaneously, circulating pump extracts water-base catalytic absorbing liquid and passes through spray head pair Novel absorbent charcoal is sprayed, and the first and second purifying columns are worked at the same time;
(2) the first and second air doors are opened and start air-introduced machine, organic exhaust gas soluble easily in water is under air-introduced machine attraction by the One and second air door enter the first and second purifying columns contacted with the water-base catalytic absorbing liquid of spray, wherein most is soluble easily in water Organic exhaust gas be dissolved into water-base catalytic absorbing liquid, wherein undissolved part contacts with novel absorbent charcoal and is adsorbed to novel On active carbon, tail gas is through demister, delivery pipe high altitude discharge;
(3) while novel absorbent charcoal adsorbs organic exhaust gas, the organic matter being adsorbed on novel absorbent charcoal is inhaled in water-base catalytic It receives and is desorbed under liquid spray, the organic matter for being insoluble in water is transferred in water-base catalytic absorbing liquid by nanocatalyst;Oxidant Catalytic oxidation is carried out to organic matter, organic matter ion is contacted with each other and collided during the reaction;Activating agent is urged water base Change the activation energy for further enhancing organic matter ion in absorbing liquid, and keeps organic matter ion collision more acute under co-catalyst effect It is strong, accelerate organic-matter chemical key to be further broken degradation, organic matter is catalyzed in water-base catalytic absorbing liquid, aoxidizes and degrades series Carbon dioxide and water are reacted and generate, absorption and desorption and regeneration carry out simultaneously at normal temperatures and pressures;In VOCs treatment process Middle water-base catalytic absorbing liquid is maintained in ratio range.
The further scheme of the invention, when processing is insoluble in the organic exhaust gas of water, its work step is as follows:
(1) it adsorbs, opens the first air door, close the second air door, organic exhaust gas is entered under air-introduced machine attraction by the first air door First purifying column, organic exhaust gas is by novel absorbent charcoal adsorption cleaning in the first purifying column, and tail gas is through demister, delivery pipe high-altitude Discharge;
(2) alternating sorbent closes the first air door after novel absorbent charcoal adsorption saturation, open the second air door, organic exhaust gas is in air inducing Machine attracts lower second air door that passes through to enter the second purifying column, and organic exhaust gas is adsorbed in the second purifying column by novel absorbent charcoal net Change, tail gas is through demister, delivery pipe high altitude discharge;
(3) it is desorbed, while the absorption of the second purifying column, starts the circulation pump work of the first purifying column, circulating pump extracts water base Catalytic absorption liquid carries out spray desorption to novel absorbent charcoal by spray head, and nanocatalyst shifts the non-organic matter for being dissolved in water Into aqueous phase;Oxidant carries out catalytic oxidation, and organic matter ion is contacted with each other and collided during the reaction;Activating agent The activation energy of organic matter ion is further enhanced in water-base catalytic absorbing liquid, and makes organic matter ion under co-catalyst effect Collide more violent, organic-matter chemical key accelerated further to be broken degradation, organic matter is catalyzed in water-base catalytic absorbing liquid, aoxidize and Degradation serial reaction simultaneously generates carbon dioxide and water;Water-base catalytic absorbing liquid is maintained at proportion model during VOCs treatment In enclosing;
(4) it regenerates, after the completion of the novel absorbent charcoal desorption in the first purifying column, water-base catalytic absorbing liquid stops spray, and to water Base catalytic absorption liquid is filtered impurity elimination and matches again, access dry air the novel absorbent charcoal in tower is carried out it is air-dried, then Start circulating pump to spray novel absorbent charcoal 1-2 hours, then access dry air and air-dry, forms liquid in novel active carbon surface Film can carry out next round organic exhaust gas adsorption.
The further scheme of the invention, each group of purifying column can be by the design requirement of organic matter purge amount by more Purifying column composes in series and carries out multi-stage absorption purification.
After adopting the above scheme, it has the following advantages compared with prior art and effect: first is that novel absorbent charcoal of the invention A large amount of oxygen-containing groups of the metal oxide and surface that are contained by co-catalyst activated carbon, substantially increase chemisorption Performance makes novel absorbent charcoal that can not only adsorb organic matter in liquid phase, and can adsorb organic matter in aqueous phase, and in aqueous Chemisorption generates chemical reaction in phase.Second is that organic matter absorption can carry out in aqueous phase, solves existing activity in this way The problem of may burning in air after the organic matters such as charcoal absorption benzene, straight-chain hydrocarbons, no longer there is combustion explosion risk.Third is that painting Novel absorbent charcoal can solve active carbon and directly connect with organic particulate matter under liquid film protection in the particulate matters treatment process such as mist The problem of touching blocks the micropore of activated carbon surface easily by particulate matters such as coating clouds in exhaust gas.Fourth is that regeneration is simple and easy, Oxidation desorption, absorption regeneration can be synchronized and be carried out continuously at normal temperatures and pressures, and desorption rate is fast, effect is good, and regeneration loss is small, be used Service life is long, and investment and operating cost are lower.
Detailed description of the invention
Fig. 1 is the process flow diagram of the invention.
Specific embodiment
The specific embodiment of the method for a kind of novel absorbent charcoal of the invention and processing organic exhaust gas, novel absorbent charcoal Preparation method includes the following steps:
(1) water-base catalytic absorbing liquid is prepared, is prepared as following weight percent: nanocatalyst 0.1-6%, oxidant 0.5- 10%, activating agent 0.1-5%, co-catalyst 0.2-6%, surplus are water, are formulated through being mixed;
(2) it using active carbon as carrier, sprays or impregnates using water-base catalytic absorbing liquid at normal temperature, time 0.5-2 hour, Activated carbon surface forms liquid film, air-dries or the novel absorbent charcoal with chemisorption, physical adsorption property can be obtained in drying, newly Type active carbon adsorbs organic matter in liquid phase, at normal temperatures and pressures oxidation desorption, absorption and desorption and regeneration can synchronize continuously into Row.
The nanocatalyst be macrocyclic polyether class, polyethers, quaternary ammonium salt any or arbitrary composition, make novel work Property charcoal have that oleophylic is hydrophilic and phase transfer characteristic, with exhaust gas in organic matter when contacting, the non-organic matter for being dissolved in water is transferred to In aqueous phase, and carry out absorption absorption.The oxidant be containing peroxide, persulfate, oxygen hydrochlorate, ozone, hydroxyl, Any or arbitrary composition of OH ion, resolves into the oxidation operation adsorbed on novel absorbent charcoal under water liquid phase state Small molecule is directly degraded, and novel absorbent charcoal palingenesis is played.The activating agent is polyoxyethylene-type, polyol type, sulphur Any or arbitrary composition of Barbiturates and sulfuric ester salt, have enhancing molecule activation characteristic, when being contacted with organic matter from To acceleration reagentia.The co-catalyst is acid base catalysator, the metal oxygen contained by co-catalyst activated carbon The a large amount of oxygen-containing groups of compound and surface.
The invention using novel absorbent charcoal processing organic exhaust gas method, as shown in Figure 1, including air inlet pipe 1, at least Two groups of first purifying columns 4 and second purifying column 12 in parallel with air inlet pipe 1 are exported with the first purifying column 4 and the second purifying column 12 The organic exhaust gas input end of the delivery pipe 8 of connection, air inlet pipe 1 is equipped with air-introduced machine 2, with the first purifying column 4 and the second purifying column 12 It is corresponded in the air inlet pipe 1 of connection and the first air door 3 and the second air door 11 is installed, it is right on the first purifying column 4 and the second purifying column 12 It should be equipped with novel absorbent charcoal packing layer 5, spray head 6, demister 7, circulating pump 10, placed on novel absorbent charcoal packing layer 5 by having The novel absorbent charcoal of machine object purge amount proportion, 10 one end of circulating pump are connect with spray head 6, and the water-base catalytic of the other end and tower bottom is inhaled Liquid 9 is received to communicate.
In order to handle different types of organic exhaust gas, when handling organic exhaust gas soluble easily in water, its work step is as follows:
(1) start the circulating pump 10 of the first and second purifying columns 4,12 simultaneously, circulating pump 10 extracts water-base catalytic absorbing liquid 9 and passes through Spray head 6 sprays novel absorbent charcoal 5, works at the same time the first and second purifying columns 4,12;
(2) the first and second air doors 3,11 are opened and start air-introduced machine 2, organic exhaust gas soluble easily in water is under the attraction of air-introduced machine 2 Enter the first and second purifying columns 4,12 by the first and second air doors 3,11 to contact with the water-base catalytic absorbing liquid 9 of spray, Middle major part organic exhaust gas soluble easily in water is dissolved into water-base catalytic absorbing liquid 9, wherein undissolved part and novel absorbent charcoal 5 It contacts and is adsorbed on novel absorbent charcoal 5, tail gas is through demister 7,8 high altitude discharge of delivery pipe;
(3) while novel absorbent charcoal adsorbs organic exhaust gas, the organic matter being adsorbed on novel absorbent charcoal 5 is inhaled in water-base catalytic It receives under liquid 9 sprays and is desorbed, the organic matter for being insoluble in water is transferred in water-base catalytic absorbing liquid by nanocatalyst;Oxidant Catalytic oxidation is carried out to organic matter, organic matter ion is contacted with each other and collided during the reaction;Activating agent is urged water base Change the activation energy for further enhancing organic matter ion in absorbing liquid 9, and makes organic matter ion collision more under co-catalyst effect Acutely, organic-matter chemical key is accelerated further to be broken degradation, organic matter is catalyzed in water-base catalytic absorbing liquid 9, aoxidizes and degrades Serial reaction simultaneously generates carbon dioxide and water, and absorption and desorption and regeneration carry out simultaneously at normal temperatures and pressures;In VOCs treatment Water-base catalytic absorbing liquid 9 is maintained in ratio range in the process.
In order to handle different types of organic exhaust gas, when processing is insoluble in the organic exhaust gas of water, its work step is as follows:
(1) it adsorbs, opens the first air door 3, close the second air door 11, organic exhaust gas passes through the first air door 3 under the attraction of air-introduced machine 2 Into the first purifying column 4, organic exhaust gas is by novel absorbent charcoal adsorption cleaning in the first purifying column 4, and tail gas is through demister 7, row Put 8 high altitude discharge of pipe;
(2) alternating sorbent closes the first air door 3 after novel absorbent charcoal adsorption saturation, open the second air door 11, and organic exhaust gas is drawing Blower 2 attracts lower second air door 11 that passes through to enter the second purifying column 12, and organic exhaust gas is in the second purifying column 12 by novel active Charcoal adsorption cleaning, tail gas is through demister 7,8 high altitude discharge of delivery pipe;
(3) it is desorbed, while the absorption of the second purifying column 12, the circulating pump 10 of the first purifying column 4 of starting works, and circulating pump 10 is taken out Water intaking base catalytic absorption liquid 9 carries out spray desorption to novel absorbent charcoal by spray head 6, and nanocatalyst is dissolved in having for water for non- Machine object is transferred in aqueous phase;Oxidant carries out catalytic oxidation, and organic matter ion is contacted with each other and touched during the reaction It hits;Activating agent further enhances the activation energy of organic matter ion in water-base catalytic absorbing liquid, and makes under co-catalyst effect Organic matter ion collision is more violent, accelerates organic-matter chemical key to be further broken degradation, organic matter is in water-base catalytic absorbing liquid It is catalyzed, aoxidizes and degrades and serial reaction and generate carbon dioxide and water;The water-base catalytic absorbing liquid 9 during VOCs treatment It is maintained in ratio range;
(4) it regenerates, after the completion of the novel absorbent charcoal desorption in the first purifying column 4, water-base catalytic absorbing liquid 9 stops spray, and right Water-base catalytic absorbing liquid 9 is filtered impurity elimination and matches again, access dry air the novel absorbent charcoal in tower is carried out it is air-dried, Restart circulating pump 10 to spray novel absorbent charcoal 1-2 hours, then accesses dry air and air-dry, in novel active carbon surface shape At liquid film, next round organic exhaust gas adsorption can be carried out.
In order to further reach treatment effect, each group of purifying column can be by the design requirement of organic matter purge amount by more Purifying column composes in series and carries out multi-stage absorption purification.
Embodiment 1: when handling organic exhaust gas soluble easily in water, water-base catalytic absorbing liquid is made as following weight percent Match: nanocatalyst 0.1%, oxidant 0.5%, activating agent 0.2%, co-catalyst 2%, surplus are water, through mixing preparation At;Using active carbon as carrier, sprays or impregnate using water-base catalytic absorbing liquid at normal temperature, the time 1 hour, in activated carbon surface Liquid film is formed, air-dries or drying can be obtained with the novel absorbent charcoal compared with extensive chemical reaction, adsorptivity.Novel absorbent charcoal is net Change tower interior suction to echo desorption while carrying out, desorption and regeneration, catalysis, oxidation and degradation series are anti-under water-base catalytic absorbing liquid spray Should and it generate carbon dioxide and water.
Embodiment 2: when handling organic exhaust gas soluble easily in water, water-base catalytic absorbing liquid is made as following weight percent Match: nanocatalyst 2%, oxidant 8%, activating agent 4%, co-catalyst 6%, surplus are water, are formulated through being mixed;With work Property charcoal be carrier, spray or impregnate using water-base catalytic absorbing liquid at normal temperature, the time 1 hour, form liquid in activated carbon surface Film, air-dries or drying can be obtained with the novel absorbent charcoal compared with extensive chemical absorption, physical adsorbability.Novel absorbent charcoal is purifying Tower interior suction is echoed desorption while being carried out, desorption and regeneration, catalysis, oxidation and degradation serial reaction under water-base catalytic absorbing liquid spray And generate carbon dioxide and water.
Embodiment 3: when processing is insoluble in the organic matter of water, water-base catalytic absorbing liquid prepares as following weight percent: Nanocatalyst 4%, oxidant 6%, activating agent 5%, co-catalyst 5%, surplus are water, are formulated through being mixed;With activity Charcoal is carrier, is sprayed or is impregnated using water-base catalytic absorbing liquid at normal temperature, the time 1 hour, forms liquid film in activated carbon surface, It air-dries or drying can be obtained with the novel absorbent charcoal compared with extensive chemical absorption, physical adsorbability.Novel absorbent charcoal is in purifying column It is inside adsorbed, desorption and regeneration, catalysis, oxidation and degrades under water-base catalytic absorbing liquid spray and serial reaction and generate titanium dioxide Carbon and water.
The novel absorbent charcoal of the invention can not only adsorb organic exhaust gas in liquid phase, and can be at normal temperatures and pressures Oxidation desorption, absorption and desorption and regeneration can synchronize be carried out continuously, substantially increase the processing capacity of organic exhaust gas.
The above, only the specific embodiment of the invention, not makes in any form the invention Limitation, on the basis of not departing from the technical solution of the invention, made simple modification, equivalent variations or modification are fallen Enter the protection scope of the invention.

Claims (9)

1. a kind of novel absorbent charcoal, it includes the following steps:
(1) water-base catalytic absorbing liquid is prepared, is prepared as following weight percent: nanocatalyst 0.1-6%, oxidant 0.5- 10%, activating agent 0.1-5%, co-catalyst 0.2-6%, surplus are water, are formulated through being mixed;
(2) it using active carbon as carrier, sprays or impregnates using water-base catalytic absorbing liquid at normal temperature, time 0.5-2 hour, in work Property carbon surface formed liquid film, air-dry or drying the novel absorbent charcoal with chemisorption, physical adsorption property can be obtained, it is novel Active carbon adsorbs organic matter in liquid phase, at normal temperatures and pressures oxidation desorption, and absorption and desorption and regeneration can be synchronized and be carried out continuously.
2. a kind of novel absorbent charcoal according to claim 1, it is characterized in that: the nanocatalyst is macrocyclic polyether Class, polyethers, quaternary ammonium salt any or arbitrary composition, having novel absorbent charcoal, oleophylic is hydrophilic and phase transfer characteristic, and useless When organic matter in gas contacts, the non-organic matter for being dissolved in water is transferred in aqueous phase, and carry out absorption absorption.
3. a kind of novel absorbent charcoal according to claim 1, it is characterized in that: the oxidant be containing peroxide, Persulfate, oxygen hydrochlorate, ozone, hydroxyl, OH ion any or arbitrary composition, by novel active under water liquid phase state The oxidation operation adsorbed on charcoal resolves into small molecule or directly degradation, plays novel absorbent charcoal palingenesis.
4. a kind of novel absorbent charcoal according to claim 1, it is characterized in that: the activating agent be polyoxyethylene-type, it is more Any or arbitrary composition of first alcohol type, Sulfonates and sulfuric ester salt has enhancing molecule activation characteristic, with organic matter Acceleration reagentia is played when contact.
5. a kind of novel absorbent charcoal according to claim 1, it is characterized in that: the co-catalyst is acid base catalysator, The a large amount of oxygen-containing groups of metal oxide and surface contained by co-catalyst activated carbon.
6. according to claim 1 to the method for any one of 5 processing organic exhaust gas, it is characterized in that: include air inlet pipe, at least two groups with The first purifying column and the second purifying column of air inlet pipe parallel connection, the delivery pipe with the first purifying column and the second purifying column outlet connection, The organic exhaust gas input end of air inlet pipe is equipped with air-introduced machine, with corresponding peace in the air inlet pipe that the first purifying column and the second purifying column connect Equipped with the first air door and the second air door, novel absorbent charcoal packing layer, spray are correspondingly provided on the first purifying column and the second purifying column Head, demister, circulating pump place the novel absorbent charcoal by organic matter purge amount proportion, circulating pump on novel absorbent charcoal packing layer One end is connect with spray head, and the other end is communicated with the water-base catalytic absorbing liquid of tower bottom.
7. the method for processing organic exhaust gas according to claim 6, it is characterized in that: handling organic exhaust gas soluble easily in water When its work step it is as follows:
(1) start the circulating pump of the first and second purifying columns simultaneously, circulating pump extracts water-base catalytic absorbing liquid and passes through spray head pair Novel absorbent charcoal is sprayed, and the first and second purifying columns are worked at the same time;
(2) the first and second air doors are opened and start air-introduced machine, organic exhaust gas soluble easily in water is under air-introduced machine attraction by the One and second air door enter the first and second purifying columns contacted with the water-base catalytic absorbing liquid of spray, wherein most is soluble easily in water Organic exhaust gas be dissolved into water-base catalytic absorbing liquid, wherein undissolved part contacts with novel absorbent charcoal and is adsorbed to novel On active carbon, tail gas is through demister, delivery pipe high altitude discharge;
(3) while novel absorbent charcoal adsorbs organic exhaust gas, the organic matter being adsorbed on novel absorbent charcoal is inhaled in water-base catalytic It receives and is desorbed under liquid spray, the organic matter for being insoluble in water is transferred in water-base catalytic absorbing liquid by nanocatalyst;Oxidant Catalytic oxidation is carried out to organic matter, organic matter ion is contacted with each other and collided during the reaction;Activating agent is urged water base Change the activation energy for further enhancing organic matter ion in absorbing liquid, and keeps organic matter ion collision more acute under co-catalyst effect It is strong, accelerate organic-matter chemical key to be further broken degradation, organic matter is catalyzed in water-base catalytic absorbing liquid, aoxidizes and degrades series Carbon dioxide and water are reacted and generate, absorption and desorption and regeneration carry out simultaneously at normal temperatures and pressures;In VOCs treatment process Middle water-base catalytic absorbing liquid is maintained in ratio range.
8. the method for processing organic exhaust gas according to claim 6, it is characterized in that: being insoluble in the organic exhaust gas of water in processing When its work step it is as follows:
(1) it adsorbs, opens the first air door, close the second air door, organic exhaust gas is entered under air-introduced machine attraction by the first air door First purifying column, organic exhaust gas is by novel absorbent charcoal adsorption cleaning in the first purifying column, and tail gas is through demister, delivery pipe high-altitude Discharge;
(2) alternating sorbent closes the first air door after novel absorbent charcoal adsorption saturation, open the second air door, organic exhaust gas is in air inducing Machine attracts lower second air door that passes through to enter the second purifying column, and organic exhaust gas is adsorbed in the second purifying column by novel absorbent charcoal net Change, tail gas is through demister, delivery pipe high altitude discharge;
(3) it is desorbed, while the absorption of the second purifying column, starts the circulation pump work of the first purifying column, circulating pump extracts water base Catalytic absorption liquid carries out spray desorption to novel absorbent charcoal by spray head, and nanocatalyst shifts the non-organic matter for being dissolved in water Into aqueous phase;Oxidant carries out catalytic oxidation, and organic matter ion is contacted with each other and collided during the reaction;Activating agent The activation energy of organic matter ion is further enhanced in water-base catalytic absorbing liquid, and makes organic matter ion under co-catalyst effect Collide more violent, organic-matter chemical key accelerated further to be broken degradation, organic matter is catalyzed in water-base catalytic absorbing liquid, aoxidize and Degradation serial reaction simultaneously generates carbon dioxide and water water-base catalytic absorbing liquid during VOCs treatment and is maintained at proportion model In enclosing;
(4) it regenerates, after the completion of the novel absorbent charcoal desorption in the first purifying column, water-base catalytic absorbing liquid stops spray, and to water Base catalytic absorption liquid is filtered impurity elimination and matches again, access dry air the novel absorbent charcoal in tower is carried out it is air-dried, then Start circulating pump to spray novel absorbent charcoal 1-2 hours, then access dry air and air-dry, forms liquid in novel active carbon surface Film can carry out next round organic exhaust gas adsorption.
9. the method for processing organic exhaust gas according to claim 6, it is characterized in that: each group of purifying column can be by organic The design requirement of object purge amount is composed in series by more purifying columns and carries out multi-stage absorption purification.
CN201810893456.3A 2018-08-07 2018-08-07 A kind of novel absorbent charcoal and the method for handling organic exhaust gas Pending CN109012584A (en)

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