CN106345221A - Novel method for treating VOCs (Volatile Organic Compounds) waste gas of middle and small-sized enterprises - Google Patents
Novel method for treating VOCs (Volatile Organic Compounds) waste gas of middle and small-sized enterprises Download PDFInfo
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- CN106345221A CN106345221A CN201610852947.4A CN201610852947A CN106345221A CN 106345221 A CN106345221 A CN 106345221A CN 201610852947 A CN201610852947 A CN 201610852947A CN 106345221 A CN106345221 A CN 106345221A
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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
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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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
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
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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
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0438—Cooling or heating systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/30—Physical properties of adsorbents
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- B01D2253/342—Monoliths
- B01D2253/3425—Honeycomb shape
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses a novel method for treating VOCs (Volatile Organic Compounds) waste gas of middle and small-sized enterprises. A specific process of the novel method provided by the invention comprises the following steps: (1) introducing generated organic waste gas into waste gas treatment devices by the middle and small-sized enterprises respectively according to the amount of 20000m<3>/h to 30000<3>/h and carrying out adsorption treatment; (2) connecting an exhausting end of the waste gas treatment device with a biological filter tower; directly carrying out filtering treatment on the waste gas subjected to the adsorption treatment through the biological filter tower; (3) establishing a common molecular sieve regeneration center at one site, and centralizing molecular sieves, which are adsorbed and saturated in the waste gas treatment devices of the middle and small-sized enterprises, to the common molecular sieve regeneration center, and carrying out desorption and regeneration on the recycled adsorbed and saturated molecular sieves through a heat accumulation type heat oxidization furnace of the molecular sieve regeneration center; meanwhile, carrying out complete oxidization and decomposition on the desorbed VOCs. A treatment technology provided by the invention can be combined with actual conditions of the middle and small-sized enterprises; the management efficiency on the VOCs is high, the cost is low and the available value is high.
Description
Technical field
The present invention relates to air environmental pollution is administered, biofiltration and technical field of environment pollution control be and in particular to one
Plant the novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment.
Background technology
Volatile organic matter (vocs) is the important pollutant leading to haze, has had a strong impact on air quality, animals and plants life
Length and human health.It is mainly derived from oil refining and petrochemical industry, chemical raw material and chemicalss manufacture, chemical drugss crude drug system
Make, synthetic fibers manufacture, external coating, printing, shoemaking, Furniture manufacture, wood-based plate manufacture, electronic components fabrication, textile printing and dyeing,
The industry such as plastic manufacturing and plastic, Life service industry discharges the major pollutants in waste gas.Vocs is divided by its chemical constitution
For 8 classes: alkanes, aromatic hydrocarbons, alkenes, halohydrocarbon, esters, aldehydes, ketone and other chemicals.There is toxicity mostly and with evil
Smelly, some or carcinogen, such as vinyl chloride, benzene,toluene,xylene etc..And, most vocs are inflammable, explosive, and this is to enterprise
Produce and bring many unsafe factors.
Medium-sized and small enterprises waste gas discharge is small, intermittent production, and exhaust gas concentration changes greatly, and organic exhaust gas concentration is relatively
Low, floor space is less, and ability to shoulder economically is limited etc..Therefore it provides safe and reliable to operation, economical rationality, reduce as far as possible
Capital expenditure and operating cost, floor space is little, and energy consumption is low, the vocs Treatment process of actual motion effect energy stably reaching standard with set
For the eager need being industry development.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment, solution
Medium-sized and small enterprises waste gas discharge of having determined problem not up to standard.
For solving the above problems, solution proposed by the present invention is: a kind of for medium-sized and small enterprises vocs waste gas pollution control and treatment
Novel method, concrete grammar comprises the following steps:
(1) organic exhaust gas producing are pressed 20000～30000m by each medium-sized and small enterprises respectively3The amount of/h is passed through exhaust-gas treatment
Device carries out adsorption treatment；Described emission-control equipment is the adsorption tower being in series by 3 molecular sieve processing units, described point
Son sieve processing unit is the built-in adsorbing material using zirconia ceramicss fibrous material as base material, the cellular knot of the drawer type made
Structure；
(2) exhaust end of emission-control equipment is connected with biofiltration tower, is provided with filler in described biofiltration tower, described
Filler be nano material bio-carrier, by activated sludge and glucose, carbamide, dipotassium hydrogen phosphate, calcium chloride, magnesium phosphate, chlorine
After changing ferrum 10:5:2:3:1:0.5:0.1 in mass ratio mixing, after cultivating 3 days at 40～54 DEG C, bio-carrier is squeezed into by water pump
Upper biofilm forms biological filter membrane, and wherein biological filter membrane and the mass ratio of nano material carrier are 5:4, then adsorb step (1)
The waste gas processing is passed through removal vocs from the bottom of biofiltration tower；
(3) select one place, set up a shared regenerating molecular sieve center, then by the waste gas of each medium-sized and small enterprises
In reason device, the molecular sieve of adsorption saturation focuses on above-mentioned regenerating molecular sieve center, and this regenerating molecular sieve center is provided with heat-accumulation type hot
There is vocs grabber in oxidation furnace, and this heat accumulation type thermal oxidation stove, the vocs that molecular sieve adsorbs is desorbed, the vocs of desorption exists
Decompose in combustion chambers burn after being heated to 700～800 DEG C in heat accumulating type oxidation furnace, in combination with the airtight lift valve cycle
Property switching, 10～20min switch once, continuous processing waste gas.
Further, described emission-control equipment is rectilinear tubular adsorption tower, and adsorption tower is arranged to rectilinear cylinder
Shape can reduce the floor space of emission-control equipment.
Further, there be one layer of dedusting filter screen in the described adsorption tower inlet end the superiors.Dedusting filter screen can be by waste gas
Bulky grain filtering dust, prevents from affecting the absorption affinity of molecular sieve.
Further, the adsorbing material in described molecular sieve is zeolite, hydrophobic modified zeolite, phenolic resin based spherical
Activated carbon, chitosan-based macropore carbon.Zeolite has larger specific surface area, high adsorption capacity；Hydrophobically modified zeolite not only has
Stronger absorbability, specific surface area is larger simultaneously, can be widely used in the adsorption treatment to waste gas for the various industries；Phenolic resin
Base globe activated char and chitosan-based macropore carbon high adsorption capacity, and voidage is high, and specific surface area is big.
Further, the preparation process of described molecular sieve is the noble gases being placed in adsorbing material at 200～400 DEG C
Middle heating 4～6h, then by be 25～27% in mass concentration water glass solution and hydrochloric acid that mass concentration is 15～18%
Soak the zirconia ceramicss fiber after 24～36h in the liquid that solution 6:1 in mass ratio mixes to be combined with adsorbing material, system
Become drawer type cellular molecular sieve processing unit.Do the intensity that base material can not only increase molecular sieve using zirconia ceramicss fiber,
And the specific surface area of molecular sieve can be increased, strengthen absorbability.
Further, described molecular sieve processing unit can individually be dismantled and change, and be easy to the operation to processing meanss
And maintenance.
Further, the preparation method of described hydrophobic modified zeolite is: will be anhydrous in 400～500 DEG C of high temperature
Zeolite is mixed by solid-to-liquid ratio 2:3 with Silicon chloride. gas, reacts 2～4h, the hydrochloric acid being then 35% by zeolite in mass concentration
The zeolite obtaining for 2～3 days is soaked in solution.
Further, the porosity of described nano material bio-carrier be 50～60%, bulk density be 0.25～
0.3g/cm3, moisture content 10～14%；Described nano material bio-carrier preferred agar nanostructured gel ball type carrier.
Further, described vocs grabber is purchased in Shanghai Shi Da environment protection energy-saving equipment company limited.
Beneficial effects of the present invention are embodied in: the vocs Treatment process of the present invention can be small in conjunction with medium-sized and small enterprises,
Having a rest property produces, and exhaust gas concentration changes greatly, and organic exhaust gas concentration is relatively low, and floor space is less, the limited life of ability to shoulder economically
Produce present situation, set up third party's operating agency, can guarantee that the waste gas stably reaching standard of enterprise's discharge, solve enterprise and worry waste gas discharge
Not up to standard be punished and treatment facility price holds the misgivings dared not accept, also can solve environmental administration in the face of large number of medium and small
Enterprise leads to the predicament of powerless supervision because supervision is short of hands, and focuses on molecular sieve and can increase the regeneration of molecular sieve
Rate, reduces cost.The emission-control equipment that each medium-sized and small enterprises each uses simultaneously utilizes zeolite molecular sieve, and is processed into
Cellular, can effectively increase adsorption efficiency, decrease the useful load of molecular sieve, then molecular sieve is arranged to independent process list
Unit, can conveniently dismantle and change, and can effectively prevent the shadow to zeolite adsorption performance for the moisture in waste gas using hydrophobic modified zeolite
Ring.Waste gas is processed through biofiltration tower after emission-control equipment again, and vocs treatment effeciency improves.The present invention is directed to medium and small
The vocs Treatment process method of enterprise is simple, reasonable, economical and practical, effectively alleviates the problem of medium-sized and small enterprises waste gas discharge.
Specific embodiment
Embodiment 1: the present embodiment provides a kind of new side for oil refining and the medium-sized and small enterprises vocs waste gas pollution control and treatment of petrochemical industry
Method, the concrete technology of described novel method comprises the following steps:
(1) each oil refining and the waste gas mean concentration of the medium-sized and small enterprises generation of petrochemical industry are 300mg/m3, then by organic waste
Gas presses 20000m3The amount of/h is passed through emission-control equipment and carries out adsorption treatment；Described emission-control equipment is by 3 molecular sieves
The adsorption tower that reason unit is in series, described molecular sieve processing unit is using zirconia ceramicss fibrous material as base material, built-in
Adsorbing material, the drawer type alveolate texture made；
(2) exhaust end of emission-control equipment is connected with biofiltration tower, is provided with filler in described biofiltration tower, described
Filler be nano material bio-carrier, by activated sludge and glucose, carbamide, dipotassium hydrogen phosphate, calcium chloride, magnesium phosphate, chlorine
After changing ferrum 10:5:2:3:1:0.5:0.1 in mass ratio mixing, squeezed into by water pump after cultivating 3 days at 40 DEG C and hang on bio-carrier
Film forms biological filter membrane, and wherein biological filter membrane and the mass ratio of nano material carrier are 5:4, then by step (1) adsorption treatment
The waste gas crossed is passed through removal vocs from the bottom of biofiltration tower；
(3) select one place, set up a shared regenerating molecular sieve center, then by the waste gas of each medium-sized and small enterprises
In reason device, the molecular sieve of adsorption saturation focuses on above-mentioned regenerating molecular sieve center, and this regenerating molecular sieve center is provided with heat-accumulation type hot
There is vocs grabber in oxidation furnace, and this heat accumulation type thermal oxidation stove, the vocs that molecular sieve adsorbs is desorbed, the vocs of desorption exists
Decompose in combustion chambers burn after being heated to 700 DEG C in heat accumulating type oxidation furnace, cut in combination with airtight lift valve periodicity
Change, 10min switches once, continuous processing waste gas.
Wherein, described emission-control equipment is rectilinear tubular adsorption tower, and adsorption tower is arranged to rectilinear tubular energy
Reduce the floor space of emission-control equipment, there be one layer of dedusting filter screen in the described adsorption tower inlet end the superiors.Dedusting filter screen energy
By the bulky grain filtering dust in waste gas, prevent from affecting the absorption affinity of molecular sieve.
Wherein, the adsorbing material in described molecular sieve is zeolite, hydrophobic modified zeolite, phenolic resin based spherical activated carbon
Charcoal, chitosan-based macropore carbon.Zeolite has larger specific surface area, high adsorption capacity；Hydrophobically modified zeolite not only has stronger
Absorbability, specific surface area is larger simultaneously, can be widely used in the adsorption treatment to waste gas for the various industries；Phenolic resin base ball
Shape activated carbon and chitosan-based macropore carbon high adsorption capacity, and voidage is high, and specific surface area is big.
Wherein, the preparation process of described molecular sieve is that adsorbing material is placed in heating 4h in the noble gases at 200 DEG C,
Then by be 25% in mass concentration water glass solution and hydrochloric acid solution 6:1 in mass ratio that mass concentration is 15% mixing and
Soak the zirconia ceramicss fiber after 24h in the liquid becoming to be combined with adsorbing material, make the cellular molecular sieve of drawer type and process
Unit.Do, using zirconia ceramicss fiber, the intensity that base material can not only increase molecular sieve, and the specific surface of molecular sieve can be increased
Long-pending, strengthen absorbability.
Wherein, described molecular sieve processing unit can individually be dismantled and change, and be easy to the operation to processing meanss and dimension
Shield, the preparation method of described hydrophobic modified zeolite is: presses anhydrous zeolite with Silicon chloride. gas in 400 DEG C of high temperature
Solid-to-liquid ratio 2:3 mix, react 2h, then by zeolite mass concentration be 35% hydrochloric acid solution in soak 2 days obtain zeolite,
The porosity of described nano material bio-carrier is 50%, bulk density is 0.25g/cm3, moisture content 10%；Described receives
Rice material bio-carrier preferred agar nanostructured gel ball type carrier, it is to reach environmental protection section that described vocs grabber is purchased in Shanghai
Can equipment company limited.
Embodiment 2: the present embodiment provides a kind of medium-sized and small enterprises vocs waste gas manufacturing for chemical raw material and chemicalss
The novel method administered, the concrete technology of described novel method comprises the following steps:
(1) the waste gas mean concentration that the medium-sized and small enterprises of chemical raw material and chemicalss manufacture produce is 250mg/m3, then
Organic exhaust gas organic exhaust gas are pressed 25000m3The amount of/h is passed through emission-control equipment and carries out adsorption treatment；Described exhaust-gas treatment dress
Put the adsorption tower being to be in series by 3 molecular sieve processing units, described molecular sieve processing unit is with zirconia ceramicss fiber
Material as base material, built-in adsorbing material, the drawer type alveolate texture made；
(2) exhaust end of emission-control equipment is connected with biofiltration tower, is provided with filler in described biofiltration tower, described
Filler be nano material bio-carrier, by activated sludge and glucose, carbamide, dipotassium hydrogen phosphate, calcium chloride, magnesium phosphate, chlorine
After changing ferrum 10:5:2:3:1:0.5:0.1 in mass ratio mixing, squeezed into by water pump after cultivating 3 days at 47 DEG C and hang on bio-carrier
Film forms biological filter membrane, and wherein biological filter membrane and the mass ratio of nano material carrier are 5:4, then by step (1) adsorption treatment
The waste gas crossed is passed through removal vocs from the bottom of biofiltration tower；
(3) select one place, set up a shared regenerating molecular sieve center, then by the waste gas of each medium-sized and small enterprises
In reason device, the molecular sieve of adsorption saturation focuses on above-mentioned regenerating molecular sieve center, and this regenerating molecular sieve center is provided with heat-accumulation type hot
There is vocs grabber in oxidation furnace, and this heat accumulation type thermal oxidation stove, the vocs that molecular sieve adsorbs is desorbed, the vocs of desorption exists
Decompose in combustion chambers burn after being heated to 750 DEG C in heat accumulating type oxidation furnace, cut in combination with airtight lift valve periodicity
Change, 15min switches once, continuous processing waste gas.
Wherein, described emission-control equipment is rectilinear tubular adsorption tower, and adsorption tower is arranged to rectilinear tubular energy
Reduce the floor space of emission-control equipment, there be one layer of dedusting filter screen in the described adsorption tower inlet end the superiors.Dedusting filter screen energy
By the bulky grain filtering dust in waste gas, prevent from affecting the absorption affinity of molecular sieve.
Wherein, the adsorbing material in described molecular sieve is zeolite, hydrophobic modified zeolite, phenolic resin based spherical activated carbon
Charcoal, chitosan-based macropore carbon.Zeolite has larger specific surface area, high adsorption capacity；Hydrophobically modified zeolite not only has stronger
Absorbability, specific surface area is larger simultaneously, can be widely used in the adsorption treatment to waste gas for the various industries；Phenolic resin base ball
Shape activated carbon and chitosan-based macropore carbon high adsorption capacity, and voidage is high, and specific surface area is big.
Wherein, the preparation process of described molecular sieve is that adsorbing material is placed in heating 5h in the noble gases at 300 DEG C,
Then by be 26% in mass concentration water glass solution and hydrochloric acid solution 6:1 in mass ratio that mass concentration is 16.5% mixing
Liquid in soak zirconia ceramicss fiber and adsorbing material after 30h and be combined, make at the cellular molecular sieve of drawer type
Reason unit.Do, using zirconia ceramicss fiber, the intensity that base material can not only increase molecular sieve, and the ratio table of molecular sieve can be increased
Area, strengthens absorbability.
Wherein, described molecular sieve processing unit can individually be dismantled and change, and be easy to the operation to processing meanss and dimension
Shield, the preparation method of described hydrophobic modified zeolite is: presses anhydrous zeolite with Silicon chloride. gas in 450 DEG C of high temperature
Solid-to-liquid ratio 2:3 mix, react 3h, then by zeolite mass concentration be 35% hydrochloric acid solution in soak 2.5 days obtain boiling
Stone, the porosity of described nano material bio-carrier is 55%, bulk density is 0.275g/cm3, moisture content 12%；Described
Nano material bio-carrier preferred agar nanostructured gel ball type carrier, it is to reach ring that described vocs grabber is purchased in Shanghai
Protect energy-saving equipment company limited.
Embodiment 3: the present embodiment provides a kind of the new of medium-sized and small enterprises vocs waste gas pollution control and treatment for synthetic fibers manufacture
Method, the concrete technology of described novel method comprises the following steps:
(1) mean concentration of the waste gas that the medium-sized and small enterprises that synthetic fibers manufacture produce is 200mg/m3, then by generation
Organic exhaust gas press 30000m3The amount of/h is passed through emission-control equipment and carries out adsorption treatment；Described emission-control equipment is by 3 points
The adsorption tower that son sieve processing unit is in series, described molecular sieve processing unit is using zirconia ceramicss fibrous material as base
Material, built-in adsorbing material, the drawer type alveolate texture made；
(2) exhaust end of emission-control equipment is connected with biofiltration tower, is provided with filler in described biofiltration tower, described
Filler be nano material bio-carrier, by activated sludge and glucose, carbamide, dipotassium hydrogen phosphate, calcium chloride, magnesium phosphate, chlorine
After changing ferrum 10:5:2:3:1:0.5:0.1 in mass ratio mixing, squeezed into by water pump after cultivating 3 days at 54 DEG C and hang on bio-carrier
Film forms biological filter membrane, and wherein biological filter membrane and the mass ratio of nano material carrier are 5:4, then by step (1) adsorption treatment
The waste gas crossed is passed through removal vocs from the bottom of biofiltration tower；
(3) select one place, set up a shared regenerating molecular sieve center, then by the waste gas of each medium-sized and small enterprises
In reason device, the molecular sieve of adsorption saturation focuses on above-mentioned regenerating molecular sieve center, and this regenerating molecular sieve center is provided with heat-accumulation type hot
There is vocs grabber in oxidation furnace, and this heat accumulation type thermal oxidation stove, the vocs that molecular sieve adsorbs is desorbed, the vocs of desorption exists
Decompose in combustion chambers burn after being heated to 800 DEG C in heat accumulating type oxidation furnace, cut in combination with airtight lift valve periodicity
Change, 20min switches once, continuous processing waste gas.
Wherein, described emission-control equipment is rectilinear tubular adsorption tower, and adsorption tower is arranged to rectilinear tubular energy
Reduce the floor space of emission-control equipment, there be one layer of dedusting filter screen in the described adsorption tower inlet end the superiors.Dedusting filter screen energy
By the bulky grain filtering dust in waste gas, prevent from affecting the absorption affinity of molecular sieve.
Wherein, the adsorbing material in described molecular sieve is zeolite, hydrophobic modified zeolite, phenolic resin based spherical activated carbon
Charcoal, chitosan-based macropore carbon.Zeolite has larger specific surface area, high adsorption capacity；Hydrophobically modified zeolite not only has stronger
Absorbability, specific surface area is larger simultaneously, can be widely used in the adsorption treatment to waste gas for the various industries；Phenolic resin base ball
Shape activated carbon and chitosan-based macropore carbon high adsorption capacity, and voidage is high, and specific surface area is big.
Wherein, the preparation process of described molecular sieve is that adsorbing material is placed in heating 6h in the noble gases at 400 DEG C,
Then by be 27% in mass concentration water glass solution and hydrochloric acid solution 6:1 in mass ratio that mass concentration is 18% mixing and
Soak the zirconia ceramicss fiber after 36h in the liquid becoming to be combined with adsorbing material, make the cellular molecular sieve of drawer type and process
Unit.Do, using zirconia ceramicss fiber, the intensity that base material can not only increase molecular sieve, and the specific surface of molecular sieve can be increased
Long-pending, strengthen absorbability.
Wherein, described molecular sieve processing unit can individually be dismantled and change, and be easy to the operation to processing meanss and dimension
Shield, the preparation method of described hydrophobic modified zeolite is: presses anhydrous zeolite with Silicon chloride. gas in 500 DEG C of high temperature
Solid-to-liquid ratio 2:3 mix, react 4h, then by zeolite mass concentration be 35% hydrochloric acid solution in soak 3 days obtain zeolite,
The porosity of described nano material bio-carrier is 60%, bulk density is 0.3g/cm3, moisture content 14%；Described nanometer
Material bio-carrier preferred agar nanostructured gel ball type carrier, it is to reach environmental protection and energy saving that described vocs grabber is purchased in Shanghai
Equipment company limited.
Finally it is noted that above example, only in order to technical scheme to be described, is not intended to limit；Although
With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that: it still may be used
To modify to the technical scheme described in previous embodiment, or equivalent is carried out to wherein some technical characteristics；And
These modifications or replacement, do not make the essence of appropriate technical solution depart from spirit and the model of embodiment of the present invention technical scheme
Enclose.
Claims (8)
1. a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described novel method concrete
Technique comprises the following steps:
(1) organic exhaust gas producing are pressed 20000～30000m by each medium-sized and small enterprises respectively3The amount of/h is passed through emission-control equipment
Carry out adsorption treatment；Described emission-control equipment is the adsorption tower being in series by 3 molecular sieve processing units, described molecular sieve
Processing unit is the built-in adsorbing material using zirconia ceramicss fibrous material as base material, the drawer type alveolate texture made；
(2) exhaust end of emission-control equipment is connected with biofiltration tower, is provided with filler in described biofiltration tower, and described fills out
Expect for nano material bio-carrier, by activated sludge and glucose, carbamide, dipotassium hydrogen phosphate, calcium chloride, magnesium phosphate, iron chloride
After the mixing of 10:5:2:3:1:0.5:0.1 in mass ratio, squeezed into by water pump after cultivating 3 days at 40～54 DEG C and hang on bio-carrier
Film forms biological filter membrane, and wherein biological filter membrane and the mass ratio of nano material carrier are 5:4, then by step (1) adsorption treatment
The waste gas crossed is passed through removal vocs from the bottom of biofiltration tower；
(3) select one place, set up a shared regenerating molecular sieve center, then the exhaust-gas treatment of each medium-sized and small enterprises is filled
The molecular sieve putting middle adsorption saturation focuses on above-mentioned regenerating molecular sieve center, and this regenerating molecular sieve center is provided with heat accumulation type thermal oxidation
There is vocs grabber in stove, and this heat accumulation type thermal oxidation stove, the vocs that molecular sieve adsorbs is desorbed, the vocs of desorption is in accumulation of heat
Decompose in combustion chambers burn after being heated to 700～800 DEG C in formula oxidation furnace, cut in combination with airtight lift valve periodicity
Change, 10～20min switches once, continuous processing waste gas.
2. as claimed in claim 1 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
Emission-control equipment be rectilinear tubular adsorption tower.
3. as claimed in claim 2 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
The adsorption tower inlet end the superiors have one layer of dedusting filter screen.
4. as claimed in claim 2 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
Molecular sieve in adsorbing material be zeolite, hydrophobic modified zeolite, phenolic resin base globe activated char, chitosan-based macropore
Charcoal.
5. as claimed in claim 1 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
Molecular sieve processing unit can individually dismantle and change.
6. as claimed in claim 4 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
The preparation method of hydrophobic modified zeolite be: anhydrous zeolite and Silicon chloride. gas are pressed solid in 400～500 DEG C of high temperature
Liquor ratio 2:3 mix, react 2～4h, then by zeolite mass concentration be 35% hydrochloric acid solution in soak 2～3 days obtain
Zeolite.
7. as claimed in claim 1 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
Nano material bio-carrier porosity be 50～60%, bulk density be 0.25～0.3g/cm3, moisture content 10～14%.
8. as claimed in claim 1 a kind of novel method for medium-sized and small enterprises vocs waste gas pollution control and treatment it is characterised in that described
Vocs grabber is purchased in Shanghai Shi Da environment protection energy-saving equipment company limited.
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| CN108758664A (en) * | 2018-06-24 | 2018-11-06 | 聂广正 | A kind of heat build-up burning VOCs treatment technology with absorption and lens function |
| WO2022183676A1 (en) * | 2021-03-02 | 2022-09-09 | 海南聚能科技创新研究院有限公司 | Volatile organic gas treatment device |
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| CN203307196U (en) * | 2013-06-28 | 2013-11-27 | 四川宝英光电有限公司 | Sludge dryer with a waste gas treatment function and capable of preventing secondary pollution |
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