CN106731484A - A kind of industrial waste gas VOC recovery methods and its recovery system - Google Patents
A kind of industrial waste gas VOC recovery methods and its recovery system Download PDFInfo
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- CN106731484A CN106731484A CN201710061151.1A CN201710061151A CN106731484A CN 106731484 A CN106731484 A CN 106731484A CN 201710061151 A CN201710061151 A CN 201710061151A CN 106731484 A CN106731484 A CN 106731484A
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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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
- B01D53/10—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 moving adsorbents, e.g. rotating beds with dispersed adsorbents
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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
- B01D53/06—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 moving adsorbents, e.g. rotating beds
- B01D53/10—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 moving adsorbents, e.g. rotating beds with dispersed adsorbents
- B01D53/12—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 moving adsorbents, e.g. rotating beds with dispersed adsorbents according to the "fluidised technique"
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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
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—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
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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Abstract
The present invention relates to VOC recovery methods and its recovery system in a kind of industrial waste gas.The present invention solves the problems, such as that tradition VOC recovery methods process is complicated, equipment is big, cost recovery is high using mixing fluidisation cyclone adsorbing combined method, the adsorption recovery VOC gases from industrial discharged waste gas.Present invention also offers a kind of industrial waste gas VOC retracting devices, the equipment advantages such as device comprehensive utilization mixing fluidizer, cyclone adsorbing device, reduce the complexity of VOC recovery systems, reduce cost recovery, improve the stability of a system, make removal efficiency of VOC up to more than 98%, do not produce secondary pollution.
Description
Technical field
The invention belongs to environmental technology field, it is related to Coal Chemical Industry, oil refining, petrochemical industry, fine chemistry industry, pharmacy, printing, painting
Containing acetone, methyl alcohol, ethanol, benzene,toluene,xylene, butanol, butyl ester etc., one or more have tail in the fields such as material, ink
The Recovery Purifying of gas is utilized.Specifically, a kind of industrial waste gas VOC recovery methods and its recovery system.
Background technology
VOC (Volatile Organic Compounds, abbreviation VOC) is the important air of a class
Pollutant, boiling point 50 DEG C~260 DEG C, at room temperature saturated vapour pressure be to cause Atmospheric Photochemical Smog to be formed more than 133.3Pa
One of principal element.Common component has hydrocarbon, benzene homologues, alcohols, ketone, phenols, aldehydes, esters, amine, cyanogen
Class etc., method tail gas, vehicle exhaust, the coal combustion exhaust being mainly derived from chemical industry, petrochemical production process etc..Because it has
The features such as wide material sources, big toxicity, environmental hazard is larger, and some even have carcinogenic, teratogenesis and mutagenesis, by generation
List the pollutant of priority acccess control in various countries of boundary.《The Law of the People's Republic of China on the Prevention and Control of Atmospheric Pollution》Implemented with July 1st, 2015
GB31570-2015《Petroleum refining industry pollutant emission standard》Etc. laws and regulations to coking, Oil ＆ Gas Storage, commercial synthesis
The industries such as leather have promulgated special professional standard, control the discharge of these industries VOC.
The processing method of VOC has two classes：One class is disruptive method, such as burning method and Production by Catalytic Combustion Process, and VOC is converted
Into CO2And H2O；Another kind of is non-destructive method, i.e. absorption method, and conventional recovery method has carbon adsorption, condensation method and film point
From method, all there is certain defect in most of method.The main advantage and disadvantage of common VOC processing methods are summarized as follows：
VOC retracting device equipment main at present is more large-scale, and element is more, and flow is complex.Such as patent
CN201320617072.1 UV-VOC emission-control equipments are including photodissociation oxidation fission chamber etc., and CN201410728190.9 is a kind of
VOC decomposes composite purification processing unit and method includes absorption tower, circulating water pool, compound decomposition pond etc.,
A kind of waste gas containing VOC reclaiming clean devices of CN201410573824.8 including large-scale fibre bed, heat exchanger, air blower etc.,
The efficient VOC purifiers of CN201520015024.4 are related to absorption tower etc..These patents compared with the present invention, device constitute,
All there is larger difference in equipment and flow, and have that equipment is more large-scale, element is more, and flow is complex, operation
The problems such as high cost.Therefore, a kind of low cost is needed badly now, system equipment is few, easy-operating VOC recovery methods and device, solution
Certainly VOC purifying problems.
The content of the invention
In order to solve the problems, such as that traditional VOC retracting devices are large-scale, element is more, flow is complicated, the invention provides one
Industrial waste gas VOC recovery methods and recovery system are planted, concrete scheme is as follows：
A kind of industrial waste gas VOC recovery methods, the method includes：
(1) one-level mixing fluidisation absorptive unit：Industrial discharge waste gas containing VOC is conveyed by gas collector by blower fan
To mixing fluidizer, in the activated carbon injection mixing fluidizer of heating stripping regeneration unit regeneration, made using airflow function
Activated carbon is in suspended motion state, and waste gas and activated carbon are fully contacted, VOC in absorption industrial waste gas.
(2) two grades of cyclone adsorbing recovery units：In fresh activity charcoal particle injection cyclone adsorbing device, while one-level mixes
Industrial waste gas after fluidisation absorptive unit absorption tangentially enters cyclone adsorbing device.Rotation of the activated carbon granule in similar fluid bed
Constantly rotated in Turbulent Flow Field, the tangential industrial waste gas for entering is fully contacted with activated carbon granule, activated carbon granule absorption waste gas
Middle VOC, and discharged by cyclone adsorbing bottom of device.Gas is discharged by cyclone adsorbing device top after purification.
(3) stripping regeneration unit is heated：Fully absorption VOC activated carbon flowed out by cyclone adsorbing bottom of device, into plus
Material machine carries out heating stripping and regenerates using hot nitrogen.Activated carbon after regeneration returns to mixing fluidizer and recycles, after desorption
VOC gases with hot nitrogen enter catalysis condensing unit.
(4) it is catalyzed condensing unit：Liquid phase organic matter is flowed out by bottom of device after catalysis condensation, sends into follow-up equipment, catalysis
Gas phase is discharged by device top after condensation.
Preferably, described method, is carried out using fluidized absorption-cyclone adsorbing combine adsorption method to industrial waste gas VOC
Treatment, mixing fluidisation is adsorbed as primary adsorption unit, and cyclone adsorbing is secondary absorption unit；
Preferably, the method described in step (2), two grades of cyclone adsorbing unit activity charcoal particles enter cyclone adsorbing device,
Constantly rotated in rotating turbulence flow field, increased and VOC gas phase interracial contacts, raising adsorption efficiency；
Preferably, two grades of cyclone adsorbing unit activity charcoal particles can effectively be changed by the method described in step (2)
Property, make activated carbon that there is stronger adsorption function and more preferable mechanical strength, for different adsorption entails, inhomogeneity can be used
Type activated carbon；
Preferably, the method described in step (4), it is cold from different catalysis according to the different adjustment condensation temperatures of VOC compositions
But medium condenses VOC, and different from VOC condensation points using nitrogen, cooling medium is quickly cooled down to all VOC；
Preferably, described method, to clearance of VOC according to VOC gas components and desired difference, can reach
98% and more than, it is adaptable to all VOC operating modes, non-secondary pollution；
On the other hand, the invention provides a kind of industrial waste gas VOC recovery systems, the system includes：
Waste gas collection device, for collecting industrial discharge waste gas containing VOC；
The blower fan being connected with waste gas collection device, for conveying industrial waste gas containing VOC to mixing fluidizer；
The mixing fluidized absorption device being connected with blower fan, for VOC in primary adsorption industrial waste gas；
The cyclone adsorbing device being connected with mixing fluidizer, for VOC in secondary absorption industrial waste gas；
The charger being connected with cyclone adsorbing device, using hot nitrogen thermal regeneration activated carbon, is desorbed VOC gases；
The pump being connected with charger, mixed fluidized bed is injected by regenerated carbon；
The catalysis condensing unit being connected with charger, for being catalyzed condensation VOC and hot nitrogen.
Preferably, the cyclone adsorbing device can single-stage or multistage series and parallel.
Preferably, the mixing fluidizer is connected with cyclone adsorbing device, and mixing fluidizer carries out one-level VOC gases
Absorption, cyclone adsorbing device carries out two grades of efficient VOC gas absorptions.
Preferably, the mixing fluidizer, cyclone adsorbing device can use different-diameter, process the industry of different air quantity
Waste gas.
Preferably, described device system will mix fluidizer, cyclone adsorbing device, catalysis condensing unit series connection, pressure drop
Small, energy consumption is low, reduces total floor space and the gross investment of device.
Brief description of the drawings
Fig. 1 is recovery system schematic diagram of the invention.
Symbol description：
1 waste gas collection device；2 blower fans；3 mixing fluidized absorption devices；4 cyclone adsorbing devices；5 chargers；6 pumps；7 catalysis
Condensing unit.
Specific embodiment
Technology design of the invention is as follows：
By taking Fig. 1 as an example, the VOC waste gas of plant emissions is collected by waste gas collection device 1, and mixing fluidisation is delivered to through blower fan 2
Adsorbent equipment 3 carries out primary adsorption；Waste gas is delivered in cyclone adsorbing device 4 after primary adsorption, while fresh activity charcoal injects
Secondary absorption is carried out in cyclone adsorbing device 4；Gas is discharged by the top exit of cyclone adsorbing device 4 after two-stage adsorption cleaning, is inhaled
Attached VOC activated carbons are entered in charger 5 by the bottom of cyclone adsorbing device 4, while hot nitrogen is de- into heating is carried out in charger 5
Attached regeneration；Activated carbon is delivered in mixing fluidized absorption device 3 through pump 6 after regeneration, and hot nitrogen together enters catalysis with VOC and condenses
In device 7；After being degraded in catalysis condensing unit 7 pipe network is drained into outside gas phase, liquid phase.
The advantage of the inventive method and device is：
Using fluidized absorption-cyclone adsorbing combine adsorption method to industrial waste gas VOC treatment, absorption effect is effectively improved
Rate；It is different using condensation point, all VOC are carried out with rapid condensation, the method can be for all VOC gases of separation；Using eddy flow
Separator plural serial stage or parallel connection, effectively improve separation VOC effects；The method is applied to all absorption VOC operating modes；The device system
System will mix fluidizer, cyclone adsorbing device, catalysis condensing unit series connection, and pressure drop is small, and energy consumption is low, reduces total occupation of land of device
Area and gross investment.
Above said content is only the basic explanation under present inventive concept, and according to appointing that technical scheme is made
What equivalent transformation, all should belong to protection scope of the present invention.
With reference to embodiment, the present invention is further described, and embodiment does not limit the scope of the invention.
Embodiment 1：
Shanghai Zao Qi factories 20000Nm3/ h air quantity waste gas, VOC concentration is 500mg/Nm3, according to the inventive method and device
Carry out, continue 24h.VOC emission amount after being processed through said apparatus is about 4mg/m3(using thermal desorption sample introduction gas chromatograph),
Meet《Discharge standard of air pollutants》(GB16297-1996), the VOC rate of recovery is 99.2%.
Embodiment 2：
In said apparatus, concentration will be passed through for 700mg/m3Toluene gas, continue 24h.After being processed through said apparatus
Toluene discharge capacity is about 10mg/m3(using thermal desorption sample introduction gas chromatograph), meets《Discharge standard of air pollutants》
(GB16297-1996), toluene recovery rate is 98.6%.
Embodiment 3：
It is substantially the same manner as Example 1, except that：It is passed through concentration 900mg/m3Butyl acetate gas, continues 24h；Through
Butyl acetate discharge capacity after said apparatus treatment is about 10mg/m3Below (using gas Chromatographic Determination detection), meet《Air
Pollutant comprehensive discharge standard》(GB16297-1996), the butyl acetate rate of recovery is more than 98.8%.
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that right
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The scope most wide for causing.
Claims (8)
1. a kind of industrial waste gas VOC recovery methods, the method is comprised the following steps：
(1) one-level mixing fluidisation absorbs：Industrial discharge waste gas containing VOC is delivered to mixed flow by gas collector by blower fan
Makeup is put, and in the activated carbon injection mixing fluidizer of heating stripping regeneration unit regeneration, is made at activated carbon using airflow function
In suspended motion state, waste gas and activated carbon are fully contacted, VOC in absorption industrial waste gas；
(2) two grades of cyclone adsorbings are reclaimed：In fresh activity charcoal particle injection cyclone adsorbing device, while one-level mixing fluidisation absorbs
Industrial waste gas after unit absorption tangentially enters cyclone adsorbing device.Activated carbon granule is in the rotating turbulence flow field of similar fluid bed
In constantly rotate, the tangential industrial waste gas for entering is fully contacted with activated carbon granule, and activated carbon granule adsorbs VOC in waste gas, and
Discharged by cyclone adsorbing bottom of device.Gas is discharged by cyclone adsorbing device top after purification；
(3) heating stripping regeneration：The activated carbon of fully absorption VOC is flowed out by cyclone adsorbing bottom of device, is utilized into charger
Hot nitrogen carries out heating stripping regeneration.Activated carbon after regeneration returns to mixing fluidizer and recycles, the VOC gases after desorption
Enter catalysis condensing unit with hot nitrogen；
(4) catalysis condensation：Liquid phase organic matter is flowed out by bottom of device after catalysis condensation, sends into follow-up equipment, gas after catalysis condensation
Discharged by device top.
2. the method for claim 1, it is characterised in that two grades of cyclone adsorbings unit activity charcoal particle enters eddy flow
Absorber, constantly rotates in rotating turbulence flow field, increases and VOC gas phase interracial contacts, raising adsorption efficiency.
3. the method for claim 1, it is characterised in that according to the different adjustment condensation temperatures of VOC compositions, urged from difference
Change cooling medium condensation VOC, different from VOC condensation points using nitrogen, cooling medium is quickly cooled down to all VOC.
4. a kind of industrial waste gas VOC recovery systems, the system includes：
Waste gas collection device (1), for collecting industrial discharge waste gas containing VOC；
The blower fan (2) being connected with waste gas collection device, for conveying industrial waste gas containing VOC to mixing fluidizer；
The mixing fluidized absorption device (3) being connected with blower fan, for VOC in primary adsorption industrial waste gas；
The cyclone adsorbing device (4) being connected with mixing fluidizer, for VOC in secondary absorption industrial waste gas；
The charger (5) being connected with cyclone adsorbing device, using hot nitrogen thermal regeneration activated carbon, is desorbed VOC gases；
The pump (6) being connected with charger, mixed fluidized bed is injected by regenerated carbon；
The catalysis condensing unit (7) being connected with charger, for being catalyzed condensation VOC and hot nitrogen.
5. system as claimed in claim 4, it is characterised in that described cyclone adsorbing device (4) can single-stage or multistage string and
Connection.
6. system as claimed in claim 4, it is characterised in that mixing fluidizer (3) is gone here and there with cyclone adsorbing device (4)
Connection, mixing fluidizer carries out one-level VOC gas absorptions, and cyclone adsorbing device carries out two grades of VOC gas absorptions.
7. system as claimed in claim 4, it is characterised in that mixing fluidizer (3), cyclone adsorbing device (4) can be used
Different-diameter, processes the industrial waste gas of different air quantity.
8. system as claimed in claim 4, it is characterised in that will mixing fluidizer (3), cyclone adsorbing device (4), catalysis
Condensing unit (5) is connected.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710061151.1A CN106731484B (en) | 2017-01-25 | 2017-01-25 | Industrial waste gas VOC recovery method and recovery system thereof |
| PCT/CN2018/074212 WO2018137692A1 (en) | 2017-01-25 | 2018-01-25 | Method and system for recovering vocs from industrial waste gas |
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| CN201710061151.1A CN106731484B (en) | 2017-01-25 | 2017-01-25 | Industrial waste gas VOC recovery method and recovery system thereof |
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| CN106731484B CN106731484B (en) | 2019-12-06 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018137692A1 (en) * | 2017-01-25 | 2018-08-02 | 华东理工大学 | Method and system for recovering vocs from industrial waste gas |
| CN109289432A (en) * | 2017-07-24 | 2019-02-01 | 杭州大伟装饰材料有限公司 | A kind of organic exhaust gas nitrogen desorption recovery process |
| CN110898613A (en) * | 2019-12-16 | 2020-03-24 | 山东科技大学 | Device and method for treating waste gas containing low-concentration volatile organic compounds |
| CN111530239A (en) * | 2020-06-04 | 2020-08-14 | 崔云兰 | VOCs absorption and purification treatment system and treatment method in automotive interior production process |
| CN112275139A (en) * | 2020-10-21 | 2021-01-29 | 清华大学 | Exhaust gas treatment method and apparatus |
| CN113318871A (en) * | 2021-05-20 | 2021-08-31 | 内蒙古万邦清源环保科技有限公司 | Method for preparing carbon superfine powder material from coal chemical industry byproduct gasified slag |
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| JPH06304440A (en) * | 1993-04-22 | 1994-11-01 | Toray Ind Inc | Organic solvent recovery device |
| CN102366704A (en) * | 2011-10-26 | 2012-03-07 | 中国科学院过程工程研究所 | Device and method for removing sulphur dioxide and dioxin from sintering flue gas |
| CN104740973A (en) * | 2015-03-16 | 2015-07-01 | 河北科技大学 | Recycling device of organic solvent in high-concentration organic waste gas |
| CN105944542A (en) * | 2016-06-30 | 2016-09-21 | 华东理工大学 | High-efficiency hydrogen sulfide gas absorption device |
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| CN102772981B (en) * | 2012-03-12 | 2014-10-22 | 甘肃银光聚银化工有限公司 | Device for continuously adsorbing and desorbing organic waste gas by using active carbon |
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| CN106166431B (en) * | 2016-08-29 | 2019-04-12 | 江苏江大环境工程有限责任公司 | A kind of active carbon thermopnore adsorption combined device containing dust and organic exhaust gas |
| CN106731484B (en) * | 2017-01-25 | 2019-12-06 | 华东理工大学 | Industrial waste gas VOC recovery method and recovery system thereof |
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- 2017-01-25 CN CN201710061151.1A patent/CN106731484B/en active Active
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2018
- 2018-01-25 WO PCT/CN2018/074212 patent/WO2018137692A1/en active Application Filing
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| JPH06304440A (en) * | 1993-04-22 | 1994-11-01 | Toray Ind Inc | Organic solvent recovery device |
| CN102366704A (en) * | 2011-10-26 | 2012-03-07 | 中国科学院过程工程研究所 | Device and method for removing sulphur dioxide and dioxin from sintering flue gas |
| CN104740973A (en) * | 2015-03-16 | 2015-07-01 | 河北科技大学 | Recycling device of organic solvent in high-concentration organic waste gas |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018137692A1 (en) * | 2017-01-25 | 2018-08-02 | 华东理工大学 | Method and system for recovering vocs from industrial waste gas |
| CN109289432A (en) * | 2017-07-24 | 2019-02-01 | 杭州大伟装饰材料有限公司 | A kind of organic exhaust gas nitrogen desorption recovery process |
| CN110898613A (en) * | 2019-12-16 | 2020-03-24 | 山东科技大学 | Device and method for treating waste gas containing low-concentration volatile organic compounds |
| CN111530239A (en) * | 2020-06-04 | 2020-08-14 | 崔云兰 | VOCs absorption and purification treatment system and treatment method in automotive interior production process |
| CN112275139A (en) * | 2020-10-21 | 2021-01-29 | 清华大学 | Exhaust gas treatment method and apparatus |
| CN113318871A (en) * | 2021-05-20 | 2021-08-31 | 内蒙古万邦清源环保科技有限公司 | Method for preparing carbon superfine powder material from coal chemical industry byproduct gasified slag |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018137692A1 (en) | 2018-08-02 |
| CN106731484B (en) | 2019-12-06 |
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