CN107754546A - A kind of condensation catalytic unit and processing method for handling high-concentration organic waste gas - Google Patents
A kind of condensation catalytic unit and processing method for handling high-concentration organic waste gas Download PDFInfo
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- CN107754546A CN107754546A CN201711164673.0A CN201711164673A CN107754546A CN 107754546 A CN107754546 A CN 107754546A CN 201711164673 A CN201711164673 A CN 201711164673A CN 107754546 A CN107754546 A CN 107754546A
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- 239000007789 gas Substances 0.000 title claims abstract description 143
- 238000009833 condensation Methods 0.000 title claims abstract description 36
- 230000005494 condensation Effects 0.000 title claims abstract description 36
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 31
- 239000010815 organic waste Substances 0.000 title claims abstract description 31
- 238000003672 processing method Methods 0.000 title abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 49
- 230000003647 oxidation Effects 0.000 claims abstract description 48
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 238000010790 dilution Methods 0.000 claims abstract description 19
- 239000012895 dilution Substances 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims abstract description 18
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000012855 volatile organic compound Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 239000005416 organic matter Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000002808 molecular sieve Substances 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 8
- 239000003463 adsorbent Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 38
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 21
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 20
- 238000001514 detection method Methods 0.000 description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 7
- 230000002745 absorbent Effects 0.000 description 5
- 239000002250 absorbent Substances 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
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- 230000008676 import Effects 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
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- 150000002894 organic compounds Chemical class 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
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- 238000005070 sampling Methods 0.000 description 4
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000001299 aldehydes Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005504 petroleum refining Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
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- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 nitrogen-containing compound Chemical class 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- 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
- B01D53/002—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 condensation
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- 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
- B01D2253/104—Alumina
-
- 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
-
- 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
- B01D2253/116—Molecular sieves other than zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The invention discloses a kind of condensation catalytic unit and processing method for handling high-concentration organic waste gas, including：Condenser system, gas concentration equalizing system and catalytic oxidation system.The present invention has coupled condensation technology and the technological merit of catalysis oxidation, and the operation stability of two kinds of technologies couplings of catalyst oxidation reactor maximum temperature point solution and the security of concentration linking are interlocked by gas concentration balanced device, air chest, dilution air frequency conversion；By the heat recovery of the gentle gas heat exchanger hot gas of the cold air cold recovery of the three-dimensional heat exchanger of condenser system, realize that equipment operation energy consumption is low；By the overall skid-mounted of equipment, realize that floor space is small, in-site installation is convenient and swift.
Description
Technical field
The present invention relates to environmental technology field, especially a kind of condensation catalytic unit for handling high-concentration organic waste gas and place
Reason method.
Background technology
Organic exhaust gas, also known as VOCs (Volatile Organic Compounds) volatile organic matter, refers under normal temperature
Saturated vapor pressure is more than organic compound of the boiling point below 260 DEG C under 70Pa, normal pressure, or vapour pressure is more than under the conditions of 20 DEG C
Or there are corresponding volatile whole organic compounds equal to 10Pa.
Mainly include NMHC (alkane, alkene, alkynes, aromatic hydrocarbon) with volatile organic compound, it is oxygen-containing
Organic compound (aldehyde, ketone, alcohol, ether etc.), halogenated hydrocarbons, nitrogen-containing compound, sulfur-containing compound etc..VOCs is atmospheric photochemical reaction
Primary Actor, can directly produce fine particle (PM2.5), and and then trigger the serious atmospherics such as photochemical fog, haze dirty
Contaminate phenomenon.Meanwhile most VOCs have toxicity, health of people is directly endangered, VOCs is classified as the pollutant of priority control by country,
Emphasize to carry out industrial VOCs pollution controls for key industry.
Industrial VOCs mostlys come from the production of the raw materials containing VOCs such as petroleum refining and petrochemical industry, Coal dressing and conversion
Industry, oils (fuel oil, solvent etc.) storage, transport and sales process, coating, ink, adhesive, agricultural chemicals etc. are using VOCs as raw material
The product containing VOCs such as production industry, application, printing, bonding, industry cleaning link use process.Involved by industrial source VOCs discharges
Industry it is numerous, have the characteristics that discharge intensity it is big, fluctuation of concentration is big, pollutant kind is more, the duration is long, to local air
The influence of quality is notable.
VOCs control technology is divided into two major classes substantially.The first kind is preventive measure, with more exchange device, modified technique skill
Based on art, prevent leakage or even elimination VOCs discharges, this is desired, but horizontal with current technology, to environment
The organic exhaust gas of middle discharge and leakage various concentrations is inevitable, at this moment must just use the second class technology.Second class skill
Art is controlling measure, based on end treatment.End-of-pipe control technology includes two classes, i.e. recovery technology and destruction technology.Recovery
Technology is the method by physics, change temperature, pressure or using the methods of selective absorbent and permoselective membrane come rich
The method of collection separation organic pollution, it is main to include the technologies such as condensation, absorption and sorption and UF membrane.The volatility of recovery is organic
Thing can recycle directly or through technical process is returned after simple purification, to reduce the consumption of raw material.Destruction technology is to pass through
Chemistry or biochemical reaction, it is nontoxic that organic compound is transformed into carbon dioxide and water etc. with heat, light, catalyst or microorganism etc.
The method of evil and inorganic molecules compound, mainly broken including high temperature incineration, catalysis burning, biological oxidation, low temperature plasma
The technologies such as bad and photochemical catalytic oxidation.
VOCs treatment technology typically does initial option according to two factors of concentration and flow, and final process method needs to integrate
Consider the property of organic component.It is general to consider that physical partition method recovery is utilizing when gas concentration is larger, and in recovery method
In, adsorption technology and membrane separation technique are separating and concentrating technologies, are usually applied in combination with condensation technology or absorption techniques.Absorb
Technology concentration is more broad, but the selection of absorbent and the processing of absorbing liquid are cumbersome, and it is absorbent to select water,
Organic substance must be soluble in water, such as the water-soluble substances such as acetone, methanol, ethanol, and absorbing liquid need the separation of rectifying again or
Person regards sewage disposal, selects other organic substances to be absorbed, and the volatilization of absorbent in itself can form VOCs, and some fields
Substantially there is no absorbent such as harbour.Comparatively, there is the condensation technology of recovering effect, concentration is more broad, is applicable
Occasion is even more extensive, if using air-cooled form, public work is few, and the organic solvent concentration after condensing is high.Destruction technology is more
Kind is various, is after all that organic matter is converted into H2O and CO2, during being somebody's turn to do, the combustion heat of organic matter will cause VOCs temperature rise surely,
So the technology of destruction is higher to VOCs concentration requirement, too high concentration necessarily causes high temperature.Concentration is in 1~6g/m3When, it can adopt
With catalytic oxidation technologies, concentration can use heating power oxidation technology in 2~12g/m3, and concentration is less than 1g/m3When, it is general to use
Non-thermal plasma trap or photocatalysis technology.
As VOCs discharge standards are more and more lower, it is ensured that final exhaust emissions concentration meets《Petroleum refining industry pollutant
Discharge standard》GB 31570-2015 and《Petro chemical industry pollutant emission standard》GB 31571-2015 limit value requirement,
It is difficult to accomplish qualified discharge that condensation technology or absorption techniques, which is used alone, for high-concentration organic waste gas, destroys technology to volatilization
Property organic concentration requirement it is strict, and heating power oxidation technology temperature is too high, and has naked light.Catalytic oxidation technologies are with respect to initiation temperature
Relatively low, the flames of anger produces, more safer with respect to heating power oxidation technology.So the processing for high-concentration organic waste gas, typically
Used using recovery technology and the technology coupling of destruction, then the operation stability of two kinds of technologies coupling and the security of concentration linking
Enjoy and denounce.
The content of the invention
The technical problems to be solved by the invention are, there is provided a kind of condensation catalytic unit for handling high-concentration organic waste gas
And processing method, condensation technology and the technological merit of catalysis oxidation can be coupled, the operation stability for solving two kinds of technology couplings
With the security of concentration linking.
In order to solve the above technical problems, the present invention provides a kind of condensation catalytic unit for handling high-concentration organic waste gas, bag
Include：Condenser system, gas concentration equalizing system and catalytic oxidation system；Condenser system include air pump 1, evaporator 2, compressor 9,
Condenser 10, expansion valve 11, liquid trap 12, gas concentration equalizing system include gas concentration balanced device 3, air chest 4 and dilution
Blower fan 5, catalytic oxidation system include gas-gas heat exchanger 6, electric heater 7, catalyst oxidation reactor 8；The air inlet conduct of air pump 1
The entrance of high-concentration organic waste gas, the air inlet of the gas outlet connection evaporator 2 of air pump 1；The gas outlet of air pump 2 is divided into three tunnels,
Liquid trap 12 is connected to all the way；It is again introduced into evaporator 2 after compressor 9, condenser 10 and expansion valve 11 successively all the way；One
Road is anti-by gas concentration balanced device 3, air chest 4, dilution air 5, gas-gas heat exchanger 6, electric heater 7, catalysis oxidation successively
It is again introduced into after answering device 8 after gas-gas heat exchanger 6 as clean gas discharge.
Preferably, air pump 1 is frequency conversion fan, is interlocked with the pressure sensor of organic exhaust gas source line.
Preferably, gas concentration balanced device 3 is adsorption tanks, internal at most to fill three kinds of adsorbents, respectively activated alumina,
Silica gel and molecular sieve, it is non-combustible adsorbent；Wherein activated alumina and molecular sieve are mainly used to handle highly polar organic matter
Such as methanol, acetone, silica gel are mainly used to handle nonpolar organic matter and easily polarization organic matter such as hydro carbons, aromatic hydrocarbons etc.；For
Three kinds of adsorbents are pressed activated alumina, silica gel and molecular sieve 1 by the complicated VOCs of gas component:2:1 mass ratio from it is lower toward
Upper filling, wherein gas concentration balanced device 3, air chest 4 and dilution air 5 form gas concentration equalizing system, cold for being connected
Solidifying system and catalytic oxidation system.
Preferably, dilution air 5 is the temperature sensor interlocking frequency conversion in frequency conversion fan, and catalyst oxidation reactor 8.
Preferably, gas heat exchanger 6 is plate type heat exchanger or plate-fin heat exchanger, and air chest is provided with 2 and more than 2
Fresh air inlet, each entrance has the stainless steel cloth air cleaner of 4~8 mesh.
Preferably, the temperature sensor containing 6 or more than 6 in catalyst oxidation reactor 8, the maximum temperature of sensor
With frequency conversion dilution air interlocked control.
Preferably, catalyst oxidation reactor 8 includes regular formula noble metal catalyst.
Preferably, high-concentration organic waste gas processing unit is overall skid-mounted equipment.
A kind of condensation catalysis treatment method for handling high-concentration organic waste gas, comprises the following steps：
(1) high-concentration organic waste gas is condensed back the easy condensed components in high-concentration organic waste gas by condenser system
Receive, handle as low-concentration organic exhaust gas；
(2) gas concentration after condensation is fluctuated into larger gas and passes through gas concentration equalizing system so that gas is dense
Degree fluctuation diminishes；
(3) gas concentration is fluctuated into less gas by catalytic oxidation system, by low-concentration organic exhaust gas catalysis oxidation
For CO2And H2O is discharged.
Beneficial effects of the present invention are：The present invention has coupled condensation technology and the technological merit of catalysis oxidation, according to organic
Physical Property Analysis, condensation technology energy consumption temperature analysis and the catalysis oxidation inlet concentration of thing, which calculate, determines final condensation temperature, is applicable
In multiple types organic gas, including hydro carbons, aromatic series, ketone, esters, ethers, aldehydes, alcohols, by gas concentration balanced device,
The gas concentration equalizing system that air chest, dilution air frequency conversion interlocking catalyst oxidation reactor maximum temperature point are formed solves two kinds
The operation stability of technology coupling and the security of concentration linking；Pass through the cold air cold recovery of the three-dimensional heat exchanger of condenser system
The heat recovery of gentle gas heat exchanger hot gas, realize that equipment operation energy consumption is low；By the overall skid-mounted of equipment, occupation of land face is realized
Product is small, and in-site installation is convenient and swift.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram of the present invention.
Embodiment
As shown in figure 1, a kind of condensation catalytic unit for handling high-concentration organic waste gas, including：Condenser system, gas concentration
Equalizing system and catalytic oxidation system；Condenser system includes air pump 1, evaporator 2, compressor 9, condenser 10, expansion valve 11, collection
Liquid device 12, gas concentration equalizing system include gas concentration balanced device 3, air chest 4 and dilution air 5, catalytic oxidation system bag
Include gas-gas heat exchanger 6, electric heater 7, catalyst oxidation reactor 8；The air inlet of air pump 1 enters as high-concentration organic waste gas
Mouthful, the air inlet of the gas outlet connection evaporator 2 of air pump 1；The gas outlet of air pump 2 is divided into three tunnels, is connected to liquid trap 12 all the way；
It is again introduced into evaporator 2 after compressor 9, condenser 10 and expansion valve 11 successively all the way；Pass through gas concentration successively all the way
Gas gas is again introduced into after balanced device 3, air chest 4, dilution air 5, gas-gas heat exchanger 6, electric heater 7, catalyst oxidation reactor 8
Discharged after heat exchanger 6 as clean gas.
Wherein condensing unit is using compression kind of refrigeration cycle, including compressor, condenser, expansion valve, evaporator etc., if condensation
Temperature uses superposition type compression condensation system when being less than -35 DEG C.Catalyst oxidation reactor includes regular formula noble metal (Pb/Pt) and urged
Agent.Evaporator in condenser system is three-dimensional heat exchanger, can make it that by the organic exhaust gas temperature after condenser system be 15
~28 DEG C；Cold in cold air is all reclaimed, energy-saving effect is obvious.The minimum condensation temperature of condenser system is according to organic exhaust gas
Depending on constitutive property and organic exhaust gas concentration after condenser system, the temperature concentration that partly common are machine material is shown in Table
1, condenser system can be by the minimum condensation of organic exhaust gas to -75 DEG C, and the organic exhaust gas concentration after condenser system is in 4~30g/
m3, optium concentration 10g/m3.The temperature concentration that common are machine material is as shown in table 1.
Table 1 common are the temperature concentration table of machine material
Dilution air in the present invention is frequency conversion fan, and the interlocking frequency conversion of catalyst oxidation reactor temperature sensor, it is ensured that
Catalytic oxidation system safe operation.Described air pump is frequency conversion fan, is interlocked with the pressure sensor of organic exhaust gas source line.
The gas concentration balanced device is adsorption tanks, it is not necessary to is desorbed, inside can at most fill three kinds of adsorbents, active oxidation
Aluminium, silica gel and molecular sieve；Wherein activated alumina is mainly used to balanced as acetone, methanol isopolarity organic concentration, silica gel are used
Carry out the low pole organic concentrations such as balanced MTBE, butanol, aldehydes, molecular sieve is used for the easily polarization or non-such as balanced benzene, toluene, hydro carbons
Polar organic matter concentration.Described gas heat exchanger is plate type heat exchanger or plate-fin heat exchanger, air chest have 2 and 2 with
On fresh air inlet, each entrance has the stainless steel cloth air cleaner of 4~8 mesh.Described catalysis oxidation room contains
There are the temperature sensor of 6 and more than 6, the wherein maximum temperature of sensor and frequency conversion dilution air interlocked control so that urge
Change oxidation room temperature and be no more than 600 DEG C, it is ensured that the security performance of device.High-concentration organic waste gas processing unit in the present invention is
Overall skid-mounted equipment.
A kind of condensation catalysis treatment method for handling high-concentration organic waste gas, comprises the following steps：
(1) high-concentration organic waste gas is condensed back the easy condensed components in high-concentration organic waste gas by condenser system
Receive, handle as low-concentration organic exhaust gas；
(2) gas concentration after condensation is fluctuated into larger gas and passes through gas concentration equalizing system so that gas is dense
Degree fluctuation diminishes；
(3) gas concentration is fluctuated into less gas by catalytic oxidation system, by low-concentration organic exhaust gas catalysis oxidation
For CO2And H2O is discharged.
Embodiment 1
The equipment is used to handle acetone organic exhaust gas 100Nm3/h。
Start condenser system first, by acetone waste gas condensation to -50 DEG C~65 DEG C, detection gas equalization of concentration device is imported and exported
Acetone exhaust gas concentration, continuous detection 3 days, sampling detection in every 3 hours 1 time, wherein import acetone exhaust gas concentration is 2.8g/m3~
20g/m3, outlet acetone exhaust gas concentration is 4.1g/m3~12g/m3, treat that gas concentration balanced device outlet acetone exhaust gas concentration is stable
Less than 20g/m3When, after opening electric heater 30min, start dilution air, now motor heat is automatic closes, catalytic oxidation
Device temperature and frequency conversion fan automatic linkage, temperature control is at 250 DEG C~450 DEG C, and optimum temperature is 350 DEG C, system stable operation,
Air cooling detection is sampled at aiutage, is as a result 33mg/m3, qualified discharge.
Embodiment 2
The equipment is used to handle MTBE organic exhaust gas 100Nm3/h。
Start condenser system first, by MTBE waste gas condensations to -60 DEG C~75 DEG C, detection gas equalization of concentration device is imported and exported
MTBE exhaust gas concentrations, continuous detection 3 days, sampling detection in every 3 hours 1 time, wherein import MTBE exhaust gas concentrations are 3.2g/m3~
25g/m3, outlet MTBE exhaust gas concentrations are 5.4g/m3~16g/m3, treat that gas concentration balanced device outlet MTBE exhaust gas concentrations are stable
Less than 20g/m3When, after opening electric heater 30min, start dilution air, now motor heat is automatic closes, catalysis oxidation room temperature
Degree and frequency conversion fan automatic linkage, for temperature control at 230 DEG C~450 DEG C, optimum temperature is 340 DEG C, system stable operation, is being arranged
Air cooling detection is sampled at inflator, is as a result 98mg/m3, qualified discharge.
Embodiment 3
The equipment is used to handle benzene organic exhaust gas 100Nm3/h。
Start condenser system first, benzene exhaust air is condensed to -25 DEG C~35 DEG C, detection gas equalization of concentration device imports and exports benzene
Exhaust gas concentration, continuous detection 3 days, successively, wherein import benzene exhaust air concentration is 15g/m for sampling detection in every 3 hours3~36g/m3, go out
Mouth benzene exhaust air concentration is 20g/m3~27g/m3, treat that gas concentration balanced device outlet benzene exhaust air concentration is stably less than 30g/m3When, beat
After opening electric heater 30min, start dilution air, now motor heat is automatic closes, catalyst oxidation reactor temperature and frequency conversion wind
Machine automatic linkage, for temperature control at 220 DEG C~450 DEG C, optimum temperature is 340 DEG C, system stable operation, is sampled at aiutage
Air cooling detects, and is as a result 2mg/m3, qualified discharge.
Embodiment 4
The equipment is used to handle gasoline organic exhaust gas 100Nm3/h。
Start condenser system first, gasoline exhaust gas is condensed to -70 DEG C~75 DEG C, detection gas equalization of concentration device is imported and exported
Gasoline exhaust gas concentration, continuous detection 3 days, sampling detection in every 3 hours 1 time, wherein import gasoline exhaust gas concentration is 9g/m3~40g/
m3, outlet gasoline exhaust gas concentration is 15g/m3~29g/m3, treat that gas concentration balanced device outlet acetone exhaust gas concentration is stably less than
35g/m3When, after opening electric heater 30min, start dilution air, now motor heat is automatic closes, catalyst oxidation reactor temperature
Degree and frequency conversion fan automatic linkage, for temperature control at 260 DEG C~470 DEG C, optimum temperature is 380 DEG C, system stable operation, is being arranged
Air cooling detection, NMHC 103mg/m are sampled at inflator3, qualified discharge.
Although the present invention is illustrated and described with regard to preferred embodiment, it is understood by those skilled in the art that
Without departing from scope defined by the claims of the present invention, variations and modifications can be carried out to the present invention.
Claims (9)
- A kind of 1. condensation catalytic unit for handling high-concentration organic waste gas, it is characterised in that including：Condenser system, gas concentration Equalizing system and catalytic oxidation system；Condenser system includes air pump (1), evaporator (2), compressor (9), condenser (10), swollen Swollen valve (11) and liquid trap (12), gas concentration equalizing system include gas concentration balanced device (3), air chest (4) and dilution wind Machine (5), catalytic oxidation system include gas-gas heat exchanger (6), electric heater (7), catalyst oxidation reactor (8)；Air pump (1) is entered Entrance of the gas port as high-concentration organic waste gas, the air inlet of the gas outlet connection evaporator (2) of air pump (1)；Air pump (2) go out Gas port is divided into three tunnels, is connected to liquid trap (12) all the way；Pass through compressor (9), condenser (10) and expansion valve successively all the way (11) evaporator (2) is again introduced into after；All the way successively by gas concentration balanced device (3), air chest (4), dilution air (5), Gas-gas heat exchanger (6) is again introduced into after gas-gas heat exchanger (6), electric heater (7), catalyst oxidation reactor (8) afterwards as cleaning Gas discharges.
- 2. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that air pump (1) is Frequency conversion fan, interlocked with the pressure sensor of organic exhaust gas source line.
- 3. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that gas concentration is equal Weighing apparatus (3) is adsorption tanks, and inside at most fills three kinds of adsorbents, respectively activated alumina, silica gel and molecular sieve, wherein active oxygen Change aluminium and molecular sieve is mainly used to handle highly polar organic matter, silica gel is mainly used to handle nonpolar organic matter and easily polarized organic Thing；For the VOCs that gas component is complicated, three kinds of adsorbents are pressed into activated alumina, silica gel and molecular sieve 1:2:1 mass ratio Example is loaded from lower to upper.
- 4. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that dilution air (5) be in frequency conversion fan, and catalyst oxidation reactor (8) temperature sensor interlocking frequency conversion.
- 5. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that gas heat exchanger (6) it is plate type heat exchanger or plate-fin heat exchanger, air chest is provided with the fresh air inlet of 2 and more than 2, each entrance There is the stainless steel cloth air cleaner of 4~8 mesh.
- 6. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that catalysis oxidation is anti- Answer the temperature sensor containing 6 or more than 6 in device (8), the maximum temperature and frequency conversion dilution air interlocked control of sensor.
- 7. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that catalysis oxidation is anti- Device (8) is answered to include regular formula noble metal catalyst.
- 8. the condensation catalytic unit of processing high-concentration organic waste gas as claimed in claim 1, it is characterised in that high concentration is organic Emission-control equipment is overall skid-mounted equipment.
- 9. a kind of condensation catalysis treatment method for handling high-concentration organic waste gas, it is characterised in that comprise the following steps：(1) the easy condensed components in high-concentration organic waste gas are condensed into recovery, place by high-concentration organic waste gas by condenser system Manage as low-concentration organic exhaust gas；(2) gas concentration after condensation is fluctuated into larger gas and passes through gas concentration equalizing system so that gas concentration ripple It is dynamic to diminish；(3) gas concentration is fluctuated into less gas by catalytic oxidation system, is CO by low-concentration organic exhaust gas catalysis oxidation2 And H2O is discharged.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164673.0A CN107754546A (en) | 2017-11-21 | 2017-11-21 | A kind of condensation catalytic unit and processing method for handling high-concentration organic waste gas |
| PCT/CN2018/071822 WO2019100554A1 (en) | 2017-11-21 | 2018-01-08 | Condensing catalytic device for treating high-concentration organic waste gas, and treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711164673.0A CN107754546A (en) | 2017-11-21 | 2017-11-21 | A kind of condensation catalytic unit and processing method for handling high-concentration organic waste gas |
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| WO (1) | WO2019100554A1 (en) |
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| CN108443894A (en) * | 2018-04-04 | 2018-08-24 | 河北宏顺旺吉环保科技有限公司 | The method and system of catalysis burning processing VOCs exhaust gas |
| CN108543409A (en) * | 2018-05-01 | 2018-09-18 | 衡水凯亚化工有限公司 | It is a kind of to handle the technique containing acetone and ammonia tail gas generated in triacetonamine production process |
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| CN110953599A (en) * | 2019-12-20 | 2020-04-03 | 广东佳德环保科技有限公司 | VOCs waste gas catalytic combustion system and method |
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