CN105709559A - Volatile organic waste gas treatment process and treatment equipment used in treatment process - Google Patents
Volatile organic waste gas treatment process and treatment equipment used in treatment process Download PDFInfo
- Publication number
- CN105709559A CN105709559A CN201610220107.6A CN201610220107A CN105709559A CN 105709559 A CN105709559 A CN 105709559A CN 201610220107 A CN201610220107 A CN 201610220107A CN 105709559 A CN105709559 A CN 105709559A
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- Prior art keywords
- processor
- tail gas
- waste gas
- organic waste
- nitrogen
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Classifications
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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
- B01D53/002—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
-
- 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
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/10—Liquid waste
- F23G2209/101—Waste liquor
Abstract
The invention discloses a volatile organic waste gas treatment process and treatment equipment used in the treatment process. Deep-cool nitrogen released from a liquid nitrogen storage tank exchanges heat with organic waste gas in a first treater and a second treater, the temperature of organic waste gas can be reduced to be lower than the freezing point due to low temperature of nitrogen, the organic waste gas is attached to the inside of condensing equipment, volatile organic compounds such as benzene, methylbenzene, xylene and the like in the organic waste gas are liquefied to flow out through switching of ventilation and heating and are combusted as fuel, and the purpose of removal of harmful substances in the organic waste gas is achieved. The treatment process has the advantages as follows: 1, the investment is small, and the operation cost is low; 2, the content of harmful substances in exhausted gas is reduced, and the effect of up-to-standard release is realized; 3, in combination of direct combustion, condensed substances can be combusted without other fuel, the energy is saved, and the operation cost is effectively reduced.
Description
Technical field
The present invention relates to waste gas treatment process, particularly to process technique and the equipment of process thereof of a kind of volatile organic waste gas.
Background technology
Water in global range pollutes increasingly severe with the degree of atmospheric pollution, and mist thunderbolt weather and water contamination accident on a large scale repeatedly occurs persistently in China Middle Eastern, also result in the common concern of government, theoretical circles and people and attention.It is inevitable for producing the waste gas containing pollutant in industrial production activities, although pollution control now can not accomplish the zero-emission of pollutant, but can control in certain scope by the discharge capacity of pollutant and concentration, i.e. qualified discharge.Along with concern and the attention of people's environmental pollution, environmental protection industry also grows up therewith, and the Treatment process of waste gas is more and more ripe, and industrial waste gas Treatment process is also constantly improving and innovation.Volatile organic waste gas refers to the waste gas containing VOCs such as benzene,toluene,xylenes, and general furniture, automobile, metal and the operation such as non-metallic member processing, silk-screen and chemical enterprise all can produce volatile organic waste gas.The Treatment process of organic exhaust gas has a lot, absorption process, absorption method, direct combustion method, Production by Catalytic Combustion Process, absorption+Production by Catalytic Combustion Process, bioanalysis etc..Widely used at present is active carbon adsorption, and because it has, design is simple, take up an area and amass few, the low advantage such as low with operation energy consumption of investment cost.Active carbon adsorption has preposition coating cloud pretreatment unit, and mainly due to containing paint solid impurity particle thing in part organic exhaust gas, paint slag can block activated carbon adsorption hole or stick on adsorption plant, will first adopt the pretreatment measures such as filtration or washing to remove slag.Active carbon adsorption is suitable for the organic exhaust gas for the treatment of temperature Wind Volume below 40 DEG C, low concentration.High concentration, high temperature organic exhaust gas have flammability hazard, generally should adopt direct combustion method or Production by Catalytic Combustion Process.Technically, active carbon adsorption technology is relatively simple, but it is difficult to ensure that waste gas reaches row's mark continuously and puts, because just losing absorbability after activated carbon adsorption is saturated, if it does not carry out desorption and regeneration or replacing, active carbon adsorption equipment is just as illusory, if activated carbon carries out regular desorption or replacing, its expense is just greatly increased, so the discharge beyond standards that application of active carbon adsorption processes organic exhaust gas is more.
Bioanalysis uses microbial treatments, and for hydrogen sulfide, the gas such as methane has obvious process effect, but the waste gas effect containing VOCs such as benzene,toluene,xylenes is not as, and limits the scope of its use.Burning rule is too high due to investment and operating cost, have compressed the profit margin of enterprise, makes Business survival pressure multiplier.
Summary of the invention
The technical problem to be solved is to provide process technique and the process equipment thereof of a kind of volatile organic waste gas, solve traditional active carbon adsorption technology and microbial treatments exist many deficiencies, as adsorbed not exclusively, operating cost is increased, and increases the problems such as enterprise's production cost.
The invention provides the process equipment of a kind of volatile organic waste gas, wherein, described process equipment includes first processor, second processor, tail gas air inlet pipe, tail gas escape pipe, nitrogen circulation pipeline, gasifier, collecting pit and offgas duct aerator, described nitrogen circulation pipeline is at least partially disposed at inside described first processor and described second processor, the described nitrogen circulation pipeline being not disposed within described first processor and described second processor is communicated with air inlet and gas outlet, described gas outlet is provided with gasifier, the lower end of described first processor and described second processor is designed with tail gas air inlet pipe, the upper end of described first processor and described second processor is designed with tail gas escape pipe, described tail gas air inlet pipe is communicated with tail gas aerator, described first processor and described second processor are respectively through pipeline communication collecting pit, it is respectively equipped with Hot air blast device inside described first processor and described second processor.
Preferably, described first processor and described second processor are designed with chimney respectively.
Preferably, described tail gas air inlet pipe is provided with intake valve, and described tail gas escape pipe is provided with air outlet valve.
Preferably, described first processor and described second processor inwall are all connected with adsorption plate, and described adsorption plate surface is network structure.
Present invention also offers and a kind of utilize the above-mentioned process equipment process technique to volatile organic waste gas, wherein, described process technique includes: each lead into described first processor and described second processor inside by tail gas aerator from tail gas air inlet pipe by organic exhaust gas, deep cooling nitrogen is injected described nitrogen circulation pipe interior, described deep cooling nitrogen carries out heat exchange at described first processor and described second processor inside with described deep cooling nitrogen, when organic exhaust gas temperature is down to below freezing point, form debirs, and it is attached to described first processor and described second processor inwall, described deep cooling nitrogen after heat exchange is discharged from gas outlet, after heat exchange, open described Hot air blast device, debirs are warming up to more than fusing point, and flow in collecting pit.
Preferably, the temperature of described deep cooling nitrogen is-180-150 DEG C.
Preferably, the heat time heating time of described Hot air blast device is 0.5-1h.
Preferably, described organic exhaust gas passes into the speed of described first processor and described second processor is 30-50cm3/min。
Beneficial effect: the invention provides the process technique of a kind of volatile organic waste gas and process equipment thereof, the present invention uses the deep cooling nitrogen discharged in liquid nitrogen storage tank and organic exhaust gas to carry out heat exchange inside first processor and the second processor, the low temperature of nitrogen can make organic exhaust gas temperature drop to below freezing point, and it is attached to inside condensing plant, the VOC liquefaction outflows such as the benzene,toluene,xylene in organic exhaust gas are made again through switching air heat, fall as fuel combustion, thus reaching to remove the purpose of harmful substance in organic exhaust gas.Process technique provided by the invention has the advantage that 1. small investments, and operating cost is low.2. reduce the harmful substance contents of discharge gas, reach the effect of qualified discharge.3. combine the mode of directly burning, it is not necessary to other fuel can burn the material condensed out, save the energy, effectively reduce operating cost.
Accompanying drawing explanation
Fig. 1 is the structural representation processing equipment of volatile organic waste gas provided by the invention.
Wherein, 1 first processor, 2 second processors, 3 nitrogen circulation pipelines, 4 gasifiers, 5 chimneys, 6 tail gas aerators, 7 collecting pits.
Specifically execute mode
The preferred embodiment of the present invention is described in detail below in conjunction with accompanying drawing.
Fig. 1 shows the specific embodiment of the present invention: the process equipment of a kind of volatile organic waste gas, wherein, described process equipment includes first processor 1, second processor 2, tail gas air inlet pipe, tail gas escape pipe, nitrogen circulation pipeline 3, gasifier 4, collecting pit 7 and offgas duct aerator 6, described nitrogen circulation pipeline 3 is at least partially disposed at described first processor 1 and described second processor 2 is internal, the described nitrogen circulation pipeline 3 being not disposed within described first processor 1 and described second processor 2 is communicated with air inlet and gas outlet, described gas outlet is provided with gasifier 4, the lower end of described first processor 1 and described second processor 2 is designed with tail gas air inlet pipe, described tail gas air inlet pipe is communicated with tail gas aerator 6, the upper end of described first processor 1 and described second processor 2 is designed with tail gas escape pipe, described first processor 1 and described second processor 2 are respectively through pipeline communication collecting pit 7, described first processor 1 and described second processor 2 inside are respectively equipped with Hot air blast device.
Wherein, described first processor 1 and described second processor 2 are designed with chimney 5 respectively, described tail gas air inlet pipe is provided with intake valve, described tail gas escape pipe is provided with air outlet valve, described first processor 1 and described second processor 2 inwall are all connected with adsorption plate, and described adsorption plate surface is network structure.
The process technique of volatile organic waste gas will be described by specific embodiment below.
Embodiment 1
From tail gas air inlet pipe, organic exhaust gas is each led into described first processor and described second processor by tail gas aerator, and internal (passing into speed is 30cm3/ min), deep cooling nitrogen (temperature is-180 DEG C) is injected described nitrogen circulation pipe interior, described deep cooling nitrogen carries out heat exchange at described first processor and described second processor inside with described deep cooling nitrogen, when organic exhaust gas temperature is down to below freezing point, form debirs, and it is attached to described first processor and described second processor inwall, described deep cooling nitrogen after heat exchange is discharged from gas outlet, after heat exchange, open described Hot air blast device 0.5h, debirs are warming up to more than fusing point, and flow in collecting pit by heating.
Embodiment 2
From tail gas air inlet pipe, organic exhaust gas is each led into described first processor and described second processor by tail gas aerator, and internal (passing into speed is 50cm3/ min), deep cooling nitrogen (temperature is-150 DEG C) is injected described nitrogen circulation pipe interior, described deep cooling nitrogen carries out heat exchange at described first processor and described second processor inside with described deep cooling nitrogen, when organic exhaust gas temperature is down to below freezing point, form debirs, and it is attached to described first processor and described second processor inwall, described deep cooling nitrogen after heat exchange is discharged from gas outlet, after heat exchange, open described Hot air blast device 1h, debirs are warming up to more than fusing point, and flow in collecting pit by heating.
Embodiment 3
From tail gas air inlet pipe, organic exhaust gas is each led into described first processor and described second processor by tail gas aerator, and internal (passing into speed is 40cm3/ min), deep cooling nitrogen (temperature is-160 DEG C) is injected described nitrogen circulation pipe interior, described deep cooling nitrogen carries out heat exchange at described first processor and described second processor inside with described deep cooling nitrogen, when organic exhaust gas temperature is down to below freezing point, form debirs, and it is attached to described first processor and described second processor inwall, described deep cooling nitrogen after heat exchange is discharged from gas outlet, after heat exchange, open described Hot air blast device 0.8h, debirs are warming up to more than fusing point, and flow in collecting pit by heating.
Table 1
| Numbering | 24h Organic substance collecting amount (kg) | Organic matter removal efficiency (%) |
| Embodiment 1 | 50 | 95 |
| Embodiment 2 | 48 | 93 |
| Embodiment 3 | 52 | 94 |
| Prior art parameter | 33 | 66 |
By above table data it can be seen that utilize the process technique of volatile organic waste gas provided by the invention, in its waste gas, the organic collecting amount of 24h and organic removal efficiency will far above existing technical parameters.
The invention provides the process technique of a kind of volatile organic waste gas and process equipment thereof, the present invention uses the deep cooling nitrogen discharged in liquid nitrogen storage tank and organic exhaust gas to carry out heat exchange inside first processor and the second processor, the low temperature of nitrogen can make organic exhaust gas temperature drop to below freezing point, and it is attached to inside condensing plant, the VOC liquefaction outflows such as the benzene,toluene,xylene in organic exhaust gas are made again through switching air heat, fall as fuel combustion, thus reaching to remove the purpose of harmful substance in organic exhaust gas.Process technique provided by the invention has the advantage that 1. small investments, and operating cost is low.2. reduce the harmful substance contents of discharge gas, reach the effect of qualified discharge.3. combine the mode of directly burning, it is not necessary to other fuel can burn the material condensed out, save the energy, effectively reduce operating cost.
Above-described is only the preferred embodiment of the present invention, it is noted that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.
Claims (8)
1. the process equipment of a volatile organic waste gas, it is characterized in that, described process equipment includes first processor, second processor, tail gas air inlet pipe, tail gas escape pipe, nitrogen circulation pipeline, gasifier, collecting pit and offgas duct aerator, described nitrogen circulation pipeline is at least partially disposed at inside described first processor and described second processor, the described nitrogen circulation pipeline being not disposed within described first processor and described second processor is communicated with air inlet and gas outlet, described gas outlet is provided with gasifier, the lower end of described first processor and described second processor is designed with tail gas air inlet pipe, described tail gas air inlet pipe is communicated with tail gas aerator, the upper end of described first processor and described second processor is designed with tail gas escape pipe, described first processor and described second processor are respectively through pipeline communication collecting pit, it is respectively equipped with Hot air blast device inside described first processor and described second processor.
2. process equipment according to claim 1, it is characterised in that described first processor and be designed with chimney respectively on described second processor.
3. process equipment according to claim 1, it is characterised in that described tail gas air inlet pipe is provided with intake valve, and described tail gas escape pipe is provided with air outlet valve.
4. process equipment according to claim 1, it is characterised in that described first processor and described second processor inwall are all connected with adsorption plate, and described adsorption plate surface is network structure.
5. the process equipment that one kind utilizes described in the claim 1 process technique to volatile organic waste gas, it is characterized in that, described process technique includes: each lead into described first processor and described second processor inside by tail gas aerator from tail gas air inlet pipe by organic exhaust gas, deep cooling nitrogen is injected described nitrogen circulation pipe interior, described deep cooling nitrogen carries out heat exchange at described first processor and described second processor inside with described deep cooling nitrogen, when organic exhaust gas temperature is down to below freezing point, form debirs, and it is attached to described first processor and described second processor inwall, described deep cooling nitrogen after heat exchange is discharged from gas outlet, after heat exchange, open described Hot air blast device, debirs are warming up to more than fusing point, and flow in collecting pit.
6. process technique according to claim 5, it is characterised in that the temperature of described deep cooling nitrogen is-180-150 DEG C.
7. process technique according to claim 6, it is characterised in that the heat time heating time of described Hot air blast device is 0.5-1h.
8. process technique according to claim 5, it is characterised in that it is 30-50cm that described organic exhaust gas passes into the speed of described first processor and described second processor3/min。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220107.6A CN105709559A (en) | 2016-04-11 | 2016-04-11 | Volatile organic waste gas treatment process and treatment equipment used in treatment process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610220107.6A CN105709559A (en) | 2016-04-11 | 2016-04-11 | Volatile organic waste gas treatment process and treatment equipment used in treatment process |
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| CN105709559A true CN105709559A (en) | 2016-06-29 |
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| CN201610220107.6A Pending CN105709559A (en) | 2016-04-11 | 2016-04-11 | Volatile organic waste gas treatment process and treatment equipment used in treatment process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422653A (en) * | 2016-11-24 | 2017-02-22 | 天津市联合环保工程设计有限公司 | Spraying waste gas deep freeze adsorption and comprehensive byproduct utilization method and device |
| CN107740930A (en) * | 2017-10-13 | 2018-02-27 | 北京创昱科技有限公司 | A kind of device and method of Recovery Purifying arsine gas |
| CN109499259A (en) * | 2019-01-11 | 2019-03-22 | 吴孟德 | A kind of packed tower and the method using packed tower improvement low-concentration organic exhaust gas |
| CN110075673A (en) * | 2019-05-15 | 2019-08-02 | 安徽金宇阳电子科技有限公司 | A method of exhaust gas is handled using high voltage electrostatic device |
| CN111854328A (en) * | 2020-07-06 | 2020-10-30 | 山东康源环保科技有限公司 | Treatment device for recycling organic waste gas by cryogenic process |
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| EP1473071A1 (en) * | 2003-04-30 | 2004-11-03 | Air Products And Chemicals, Inc. | Method and system for purifying exhaust gas |
| CN200975826Y (en) * | 2006-11-30 | 2007-11-14 | 牛东 | Industrial waste gas reclaiming liquify arrangement |
| CN103203157A (en) * | 2013-03-20 | 2013-07-17 | 杭州中环环保工程有限公司 | Dichloromethane waste gas treating method and system thereof |
| CN104436980A (en) * | 2014-10-29 | 2015-03-25 | 天津大学 | Method and equipment for processing exhaust gases of volatile organic compounds |
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2016
- 2016-04-11 CN CN201610220107.6A patent/CN105709559A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1473071A1 (en) * | 2003-04-30 | 2004-11-03 | Air Products And Chemicals, Inc. | Method and system for purifying exhaust gas |
| CN200975826Y (en) * | 2006-11-30 | 2007-11-14 | 牛东 | Industrial waste gas reclaiming liquify arrangement |
| CN103203157A (en) * | 2013-03-20 | 2013-07-17 | 杭州中环环保工程有限公司 | Dichloromethane waste gas treating method and system thereof |
| CN104436980A (en) * | 2014-10-29 | 2015-03-25 | 天津大学 | Method and equipment for processing exhaust gases of volatile organic compounds |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422653A (en) * | 2016-11-24 | 2017-02-22 | 天津市联合环保工程设计有限公司 | Spraying waste gas deep freeze adsorption and comprehensive byproduct utilization method and device |
| CN107740930A (en) * | 2017-10-13 | 2018-02-27 | 北京创昱科技有限公司 | A kind of device and method of Recovery Purifying arsine gas |
| CN107740930B (en) * | 2017-10-13 | 2019-11-05 | 北京创昱科技有限公司 | A kind of device and method of Recovery Purifying arsine gas |
| CN109499259A (en) * | 2019-01-11 | 2019-03-22 | 吴孟德 | A kind of packed tower and the method using packed tower improvement low-concentration organic exhaust gas |
| CN110075673A (en) * | 2019-05-15 | 2019-08-02 | 安徽金宇阳电子科技有限公司 | A method of exhaust gas is handled using high voltage electrostatic device |
| CN111854328A (en) * | 2020-07-06 | 2020-10-30 | 山东康源环保科技有限公司 | Treatment device for recycling organic waste gas by cryogenic process |
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