CN105169886A - Efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method - Google Patents
Efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method Download PDFInfo
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- 238000011084 recovery Methods 0.000 title claims abstract description 24
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- 239000010815 organic waste Substances 0.000 title abstract description 5
- 238000001179 sorption measurement Methods 0.000 claims abstract description 97
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- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 33
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000010457 zeolite Substances 0.000 claims abstract description 33
- 238000000746 purification Methods 0.000 claims abstract description 23
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- 239000000463 material Substances 0.000 claims description 34
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- 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 10
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Abstract
The invention discloses an efficient energy-saving large-air-quantity low-concentration organic waste gas recovery and treatment device and method. The recovery and treatment device comprises a pretreatment system and an adsorption and purification device, the output end of the pretreatment system is connected with a waste gas inlet of the adsorption and purification device through an adsorption and purification fan, and the adsorption and purification device is an adsorption and purification fixed bed or a zeolite rotary wheel adsorption and purification system. A recovery device further comprises a first heat exchanger, a first cooler, an adsorption recovery bed, a condenser, a layering tank, a solvent recovery tank, a heater, a first dried filter, a dehumidifying fan and a cooling fan. The recovery and treatment method includes the steps of firstly, pretreatment, secondly, adsorption and purification, thirdly, adsorption and concentration, fourthly, cooling and adsorption and fifthly, adsorption and recovery. By means of multi-stage reuse of heat and multi-stage adsorption of organic waste gas, the effects of reducing energy consumption and improving recovery efficiency are achieved, the device and method are particularly suitable for large-air-quantity low-concentration organic waste gas recovery and treatment, the aim of clean production is achieved, recycling of resources are achieved, and environment protection is achieved while energy is saved and emission is reduced.
Description
Technical field
The present invention relates to a kind of organic exhaust gas recycling and administration apparatus and method, be specifically related to a kind of energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device and method.
Background technology
Organic exhaust gas mainly result from spray paint, print, in the production process such as chemical industry, shoemaking viscose glue, paint field, and these organic exhaust gas all can indirectly or directly with the discharge of waste gas form, organic exhaust gas just pollute the environment after need purifying.
Various for VOCs treatment technology category at present, there are absorption method, bioanalysis, UV photodissociation, Production by Catalytic Combustion Process, absorption process, directly combustion method, but for the organic exhaust gas of large-wind-volume low-concentration still based on adsorption-catalysis incineration method, but, there is following shortcoming in this technique: 1, operating cost is high, more efficient ground catalytic combustion can be carried out because it need carry out more than temperature increase to 280 degree Celsius to waste gas, the demand of temperature increase certainly will cause a large amount of energy dissipations, after a lot of enterprise adopts this technique, the operation energy consumption of its system cannot be born; 2, cannot reclaim valuable solvent, solvent composition containing a large amount of valuable recoverable in organic exhaust gas, adopt Production by Catalytic Combustion Process to be only carry out oxidation Decomposition to solvent components wherein to become micromolecular carbon dioxide and water, cannot reclaim its valuable components; 3, operation stability and security not good enough, because of catalytic combustion process need worst hot case under run, and the tail gas concentration instability of process can fit into the instability for the treatment of effeciency, and worst hot case causes security also not good enough.
At present, developed into a certain degree at home for organic exhaust gas recovery process, but for the organic exhaust gas recycling and administration unit engineering case of large-wind-volume low-concentration and technical study invention still rarely seen.Patent of invention number be 201010254498.6 patent of invention propose for large-wind-volume low-concentration organic exhaust gas the recovery difficult problem that a kind of retracting device and recovery method efficiently solve this kind of organic exhaust gas to a certain extent, but its technique adopted still exists energy consumption is higher, limited efficacy, suitable application area are limited shortcoming.
Summary of the invention
In order to solve deficiency of the prior art, the object of the present invention is to provide a kind of energy-conserving and environment-protective, energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device and method that multi-stage heat recycles.
For achieving the above object, the present invention is by the following technical solutions:
An energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device, comprises pretreatment system, adsorptive purifier, and the output of pretreatment system is connected to the organic exhaust gas import of adsorptive purifier by adsorption cleaning blower fan,
Described retracting device also comprises First Heat Exchanger, the first cooler, bed, condenser, layering groove, solvent recovery groove, heater, the first dry filter are reclaimed in absorption, dehumidify blower fan and cooling blower;
Described adsorptive purifier is also provided with purified gas outlet, the import of desorption gas and concentrated gas flow export, cooling air import, cooling air outlet;
Described First Heat Exchanger is provided with new wind entrance, new wind outlet, concentrated airflow inlet and concentrated gas flow export;
Described first cooler is provided with concentrated airflow inlet and concentrated gas flow export;
Described absorption is reclaimed bed and is provided with steam entry, concentrated airflow inlet, tail gas refluxing opening, humid air floss hole, mixture outlet and new wind entrance;
Concentrated gas flow export on described adsorptive purifier is connected with the concentrated airflow inlet on First Heat Exchanger, concentrated gas flow export on First Heat Exchanger is connected with the concentrated airflow inlet on the first cooler, concentrated gas flow export on first cooler is connected with the absorption concentrated airflow inlet reclaimed on bed, the exhaust gas recirculation mouth that absorption is reclaimed on bed is connected with the import of adsorption cleaning blower fan, the mixture outlet that described absorption is reclaimed on bed is connected with the entrance of condenser, the outlet of condenser is connected with the entrance of layering groove, layering groove is provided with solvent outlet and wastewater outlet, solvent outlet on layering groove is connected with solvent recovery groove,
The outlet of described first dry filter is connected with the new wind entrance on First Heat Exchanger, and the new wind outlet on First Heat Exchanger is connected with the entrance of heater, and the outlet of heater is connected with the desorption gas import on adsorptive purifier;
Desorption blower fan is provided with between new wind entrance on described First Heat Exchanger and the entrance of heater;
The import of described dehumidifying blower fan is connected with the entrance of desorption blower fan, and the outlet of dehumidifying blower fan is connected with the absorption new wind entrance reclaimed on bed;
The import of described cooling blower is connected with the outlet of the first dry filter, and the outlet of cooling blower is connected with the cooling air import of adsorptive purifier;
Described adsorptive purifier is adsorption cleaning fixed bed or zeolite runner adsorption cleaning system.
Described retracting device also arranges the second heat exchanger, described second heat exchanger is provided with new wind entrance, new wind outlet, mixture intake and mixture outlet, the import of described dehumidifying blower fan exports with the new wind on the second heat exchanger and is connected, fresh inlet on described second heat exchanger exports with the new wind on First Heat Exchanger and is connected, the mixture outlet that described absorption is reclaimed on bed is connected with the mixture intake on the second heat exchanger, and the mixture outlet on the second heat exchanger is connected with the entrance of condenser.
Described pretreatment system is the combination a kind of or more than two in wet scrubber, the second dry filter, the second cooler.
Described wet scrubber is rotating stream tray scrubber, cyclonic water film deduster, packed tower or high gravity dedusting device.
Described first cooler is surface cooler or heat exchange of heat pipe.
Coating cloud filter cotton, primarily efficient filter wool are set in described first dry filter, medium air filtration are cotton, high efficiency filter is cotton, one or more combination in nonwoven cloth.
Described recovery method specifically comprises the following steps:
1) pretreatment: organic exhaust gas enters in pretreatment system and carries out pretreatment, makes organic exhaust gas coating cloud, particle concentration and organic exhaust gas temperature reach the requirement of post-processing process;
2) adsorption cleaning: enter in adsorption cleaning fixed bed or zeolite runner adsorption cleaning system through pretreated organic exhaust gas and carry out adsorbing separation purification, Elements in Organic Solvents is by the active carbon adsorption material absorption in adsorption cleaning fixed bed or adsorbed by the intrasystem zeolite molecular sieve sorbing material of zeolite runner adsorption cleaning, realize organic solvent to separate from organic exhaust gas, be purified through the organic exhaust gas be separated simultaneously;
3) desorption concentrate: when above-mentioned steps 2) in adsorption cleaning adopt adsorption cleaning fixed bed time, when the gas obtained through purification in adsorption cleaning fixed bed reaches exhaust gas concentration discharge standard value, the gas of purification is discharged from the purified gas outlet adsorption cleaning fixed bed, this adsorption cleaning fixed bed enters desorption and regeneration process simultaneously, desorption gas carries out desorption to the solvent be adsorbed in adsorptive purifier on active carbon, during formation contains, the concentrated air-flow of high levels of organic solvents, cooling blower is utilized to lower the temperature to active carbon after desorption, predetermined temperature to be down to then proceeds to adsorbed state,
When above-mentioned steps 2) in adsorption cleaning adopt zeolite runner adsorption cleaning system time, the runner of zeolite runner adsorption cleaning system continues to rotate with the speed of 1 ~ 6 turn per hour, when runner subregion goes to desorption district, desorption gas carries out desorption to the organic solvent be adsorbed on zeolite, form the concentrated air-flow containing middle and high concentration organic solvent, after desorption, runner rotates and utilizes cooling blower to cool zeolite molecular sieve to cooling zone, go to adsorption zone again and continue absorption organic exhaust gas, adsorption zone, cooling zone and desorption district alternate wheel turn, and realize carrying out continuously;
4) cooling absorption: the concentrated gas that above-mentioned desorption is formed flows through after First Heat Exchanger carries out one-level cooling to it, its temperature is made to drop to the preference temperature of charcoal absorption by the first cooler secondary cooling of rear end again, the absorption that concentrated gas through cooling flows through the built-in sorbing material in rear end is reclaimed in bed and is adsorbed, majority of organic solvent in concentrated air-flow is adsorbed by sorbing material, and concentrated air-flow is introduced the output of pretreatment system with after pretreated organic exhaust gas mixes by the tail gas formed after sorbing material absorption by the tail gas refluxing opening that absorption is reclaimed on bed, enter purification further in adsorption cleaning fixed bed or zeolite runner adsorption cleaning system again,
5) desorption reclaims: the mode adopting steam desorption, by steam, the organic solvent that in bed, sorbing material adsorbs is reclaimed in absorption and carry out desorption, desorption forms organic solvent-water gaseous mixture, after organic solvent-water gaseous mixture enters and carries out heat exchange in the second heat exchanger, cooling liquefaction again through condenser forms organic solvent-water mixed liquid, organic solvent-water mixed liquid is through the effect of layering groove, realize being separated of organic solvent and water, the organic solvent separated carries out reclaiming or purifying further, and the water separated processes further as waste water; In addition, after desorption, absorption reclaim sorbing material in bed the moisture that remain carry out eliminating moisture by the blower fan that dehumidifies;
Wherein, described step 3) in the formation method of desorption gas as follows: after the new wind of occurring in nature carries out high-effective dust-removing by the first dry filter to it, new wind enters in First Heat Exchanger and tentatively heats, the thermal source of First Heat Exchanger derive from concentrated air-flow that in adsorptive purifier, desorption is formed with heat, enter in the second heat exchanger through the preliminarily heated new wind of First Heat Exchanger and heat further, the thermal source of the second heat exchanger derive from absorption reclaim solvent-water gaseous mixture that bed desorption formed with heat, the new wind of further heating finally enters heater again, the temperature of heater to new wind regulates, it is made to reach the desorption temperature of adsorptive purifier, desorption gas needed for final formation.
Active carbon adsorption material in described adsorption cleaning fixed bed is cellular activated carbon sorbing material.
The sorbing material that described absorption is reclaimed in bed is activated carbon granule, column-shaped active carbon, NACF, cellular activated carbon or zeolite molecular sieve.
The present invention has following technique effect: the present invention passes through the multi-stage absorption of multi-stage heat reuse and organic exhaust gas, realizes reducing energy consumption and the effect improving organic efficiency.The characteristic of different sorbing material is utilized to combine in recovery process; the shortcoming that traditional handicraft cost is high, floor space is large, security is low can be overcome; be specially adapted to the recycling and administration of large-wind-volume low-concentration organic exhaust gas; not only reach the object of cleaner production, but also realized recycling of resource, realize the object of energy-saving and emission-reduction, protection of the environment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details:
Fig. 1 is the structured flowchart of the energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device of the present invention.
Detailed description of the invention
As shown in Figure 1, a kind of energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device of the present invention, comprise pretreatment system, adsorptive purifier, the output of pretreatment system is connected to the organic exhaust gas import of adsorptive purifier by adsorption cleaning blower fan, described retracting device also comprises First Heat Exchanger, the first cooler, bed, condenser, layering groove, solvent recovery groove, heater, the first dry filter are reclaimed in absorption, dehumidify blower fan and cooling blower;
Described adsorptive purifier is also provided with purified gas outlet, the import of desorption gas and concentrated gas flow export, cooling air import, cooling air outlet;
Described First Heat Exchanger is provided with new wind entrance, new wind outlet, concentrated airflow inlet and concentrated gas flow export;
Described first cooler is provided with concentrated airflow inlet and concentrated gas flow export;
Described absorption is reclaimed bed and is provided with steam entry, concentrated airflow inlet, tail gas refluxing opening, humid air floss hole, mixture outlet and new wind entrance;
Concentrated gas flow export on described adsorptive purifier is connected with the concentrated airflow inlet on First Heat Exchanger, concentrated gas flow export on First Heat Exchanger is connected with the concentrated airflow inlet on the first cooler, concentrated gas flow export on first cooler is connected with the absorption concentrated airflow inlet reclaimed on bed, the exhaust gas recirculation mouth that absorption is reclaimed on bed is connected with the import of adsorption cleaning blower fan, the mixture outlet that described absorption is reclaimed on bed is connected with the entrance of condenser, the outlet of condenser is connected with the entrance of layering groove, layering groove is provided with solvent outlet and wastewater outlet, solvent outlet on layering groove is connected with solvent recovery groove,
The outlet of described first dry filter is connected with the new wind entrance on First Heat Exchanger, and the new wind outlet on First Heat Exchanger is connected with the entrance of heater, and the outlet of heater is connected with the desorption gas import on adsorptive purifier;
Desorption blower fan is provided with between new wind entrance on described First Heat Exchanger and the entrance of heater;
The import of described dehumidifying blower fan is connected with the entrance of desorption blower fan, and the outlet of dehumidifying blower fan is connected with the absorption new wind entrance reclaimed on bed;
The import of described cooling blower is connected with the outlet of the first dry filter, and the outlet of cooling blower is connected with the cooling air import of adsorptive purifier;
Described adsorptive purifier is adsorption cleaning fixed bed or zeolite runner adsorption cleaning system.
Described retracting device can also arrange the second heat exchanger according to actual needs, described second heat exchanger is provided with new wind entrance, new wind outlet, mixture intake and mixture outlet, the import of described dehumidifying blower fan exports with the new wind on the second heat exchanger and is connected, fresh inlet on described second heat exchanger exports with the new wind on First Heat Exchanger and is connected, the mixture outlet that described absorption is reclaimed on bed is connected with the mixture intake on the second heat exchanger, and the mixture outlet on the second heat exchanger is connected with the entrance of condenser.
Described pretreatment system is the combination a kind of or more than two in wet scrubber, the second dry filter, the second cooler.Pretreatment system carries out reasonable Arrangement for the feature of organic exhaust gas, the combination of wet scrubber and the second dry filter can be set when for example the lacquer spraying waste gas amount of spraying paint is large, if the amount of spraying paint is less or can adopt separately the second dry filter during (side) air draft at the bottom of printing machine.
Described wet scrubber is rotating stream tray scrubber, cyclonic water film deduster, packed tower or high gravity dedusting device etc.
Described first cooler is the heat transmission equipment of the form such as surface cooler or heat exchange of heat pipe.
Coating cloud filter cotton, primarily efficient filter wool are set in described first dry filter, medium air filtration are cotton, high efficiency filter is cotton, one or more combination in nonwoven cloth.
Recycling and administration method of the present invention specifically comprises the following steps:
1) pretreatment: by spraying paint, the organic exhaust gas that discharges of the workshop such as printing enters in pretreatment system and carry out pretreatment, makes organic exhaust gas coating cloud, particle concentration and organic exhaust gas temperature reach the requirement of post-processing process; By spraying paint, the organic exhaust gas that discharges of the workshop such as printing causes it to become branch to contain the impurity such as coating cloud, particle or the situation such as organic exhaust gas temperature too high (being greater than 40 DEG C) because of its production technology reason, therefore needs to carry out pretreatment to organic exhaust gas.
2) adsorption cleaning: enter in adsorption cleaning fixed bed or zeolite runner adsorption cleaning system through pretreated organic exhaust gas and carry out adsorbing separation purification, Elements in Organic Solvents is by cellular activated carbon sorbing material (or other the low windage sorbing materials) absorption in adsorption cleaning fixed bed or adsorbed by the intrasystem zeolite molecular sieve sorbing material of zeolite runner adsorption cleaning, realize organic solvent to separate from organic exhaust gas, be purified through the organic exhaust gas be separated simultaneously;
3) desorption concentrate: when above-mentioned steps 2) in adsorption cleaning adopt adsorption cleaning fixed bed time, when the gas obtained through purification in adsorption cleaning fixed bed reaches exhaust gas concentration discharge standard value, the gas of purification is discharged from the purified gas outlet adsorption cleaning fixed bed, this adsorption cleaning fixed bed enters desorption and regeneration process simultaneously, desorption gas carries out desorption to the solvent be adsorbed in adsorptive purifier on active carbon, during formation contains, the concentrated air-flow of high levels of organic solvents, cooling blower is utilized to lower the temperature to active carbon after desorption, uniform temperature to be down to then proceeds to adsorbed state.
When above-mentioned steps 2) in adsorption cleaning adopt zeolite runner adsorption cleaning system time, the runner of zeolite runner adsorption cleaning system continues to rotate with the speed of 1 ~ 6 turn per hour, when runner subregion goes to desorption district, desorption gas carries out desorption to the organic solvent be adsorbed on zeolite, form the concentrated air-flow containing middle and high concentration organic solvent, after desorption, runner rotates and utilizes cooling blower to cool zeolite molecular sieve to cooling zone, go to adsorption zone again and continue absorption organic exhaust gas, adsorption zone, cooling zone and desorption district alternate wheel turn, and realize carrying out continuously;
By step 1), 2), 3) process be equivalent to the concentrated air-flow organic waste gas concentrating of low concentration being become middle and high concentration;
4) cooling absorption: the concentrated gas that above-mentioned desorption is formed flows through after First Heat Exchanger carries out one-level cooling to it, its temperature is made to drop to the preference temperature (generally needing to be less than 40 DEG C) of charcoal absorption by the first cooler secondary cooling of rear end again, the absorption that concentrated gas through cooling flows through the built-in sorbing material in rear end is reclaimed in bed and is adsorbed, majority of organic solvent in concentrated air-flow is adsorbed by sorbing material, and concentrated air-flow is by the solvent still containing a certain amount of concentration in the tail gas of formation after sorbing material absorption, this partial tail gas introduces the output of pretreatment system with after pretreated organic exhaust gas mixes by the tail gas refluxing opening that absorption is reclaimed on bed, enter purification further in adsorption cleaning fixed bed or zeolite runner adsorption cleaning system again,
5) desorption reclaims: the mode adopting steam desorption, by steam, the organic solvent that in bed, sorbing material adsorbs is reclaimed in absorption and carry out desorption, desorption forms organic solvent-water gaseous mixture, after organic solvent-water gaseous mixture enters and carries out heat exchange in the second heat exchanger (also can not arrange), cooling liquefaction again through condenser forms organic solvent-water mixed liquid, organic solvent-water mixed liquid is through the effect of layering groove, realize being separated of organic solvent and water, the organic solvent separated carries out reclaiming or purifying further, the water separated processes further as waste water, in addition, after desorption, absorption reclaim sorbing material in bed the moisture that remain carry out eliminating moisture by the blower fan that dehumidifies.Wherein, sorbing material in bed is reclaimed in absorption is activated carbon granule, column-shaped active carbon, NACF, cellular activated carbon or zeolite molecular sieve.
Purification and the recovery of organic exhaust gas is realized by above five steps.
Wherein, described step 3) in the formation method of desorption gas as follows: after the new wind of occurring in nature carries out high-effective dust-removing by the first dry filter to it, new wind enters in First Heat Exchanger and tentatively heats, the thermal source of First Heat Exchanger derive from concentrated air-flow that in adsorptive purifier, desorption is formed with heat, enter in the second heat exchanger through the preliminarily heated new wind of First Heat Exchanger and heat further, the thermal source of the second heat exchanger derive from absorption reclaim solvent-water gaseous mixture that bed desorption formed with heat, the new wind of further heating finally enters heater again, and (heater can be steam heater, electrical power heater or other forms of heater), the temperature of heater to new wind regulates, it is made to reach the desorption temperature of adsorptive purifier, desorption gas needed for final formation.Every Multi-class propagation to the heat that thermal desorption air-flow or steam desorption solvent-water gaseous mixture produce, achieves energy-conservation object, is within protection scope of the present invention.
In above-mentioned steps (2) when the adsorption cleaning fixed bed of cellular activated carbon sorbing material (or other low windage sorbing materials) is equipped with in employing, adsorption cleaning fixed bed can arrange 1 adsorption cleaning fixed bed according to the working condition requirement of process organic exhaust gas, adsorption cleaning process and desorption concentration process hocket when not affecting Workshop Production, multiple adsorption cleaning fixed bed also can be set, carry out adsorption cleaning and desorption concentration process simultaneously, when the purified gas outlet of wherein adsorption cleaning fixed bed reaches discharge standard, then select a good opportunity and enter desorption process, the complete adsorption cleaning fixed bed of desorption then proceeds to adsorption cleaning process, rotation like this is carried out.The active carbon of adsorption cleaning fixed bed built-in cellular active carbon or the low windage of all the other kinds.Carry out arranging one or more adsorption cleaning fixed beds according to waste gas operating mode, the condition of production, all fall within protection scope of the present invention.
And adsorption and purification technology in above-mentioned steps (2) adopts adsorption cleaning fixed bed that cellular activated carbon sorbing material (or other low windage sorbing materials) is housed or employing that zeolite molecular sieve zeolite runner adsorption technology is housed and purifies organic exhaust gas and all fall within protection scope of the present invention.
Above-mentioned steps 4) in logical overcooled concentrated gas flow through after absorption reclaims the purification of bed, tail gas enters in adsorptive purifier after must converging with the pretreated gas of step 1) and purifies further, improves the efficiency of recycled in its entirety technique.Bed is reclaimed in absorption can arrange 1 absorption recovery bed according to the working condition requirement of process organic exhaust gas, adsorption process and desorption process hocket when not affecting Workshop Production and system cloud gray model, also can arrange multiple absorption and reclaim bed, system carries out adsorption and desorption process simultaneously, and rotation is carried out.The two-step purification of every concentrated air-flow, reaches the object improving organic solvent organic efficiency, all falls within the scope of protection of the present invention.Carrying out, one or more absorption are set reclaim bed according to organic exhaust gas operating mode, the condition of production, all fall within protection scope of the present invention.
Claims (9)
1. energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device, comprises pretreatment system, adsorptive purifier, and the output of pretreatment system is connected to the organic exhaust gas import of adsorptive purifier by adsorption cleaning blower fan,
It is characterized in that: described retracting device also comprises First Heat Exchanger, the first cooler, bed, condenser, layering groove, solvent recovery groove, heater, the first dry filter are reclaimed in absorption, dehumidify blower fan and cooling blower;
Described adsorptive purifier is also provided with purified gas outlet, the import of desorption gas and concentrated gas flow export, cooling air import, cooling air outlet;
Described First Heat Exchanger is provided with new wind entrance, new wind outlet, concentrated airflow inlet and concentrated gas flow export;
Described first cooler is provided with concentrated airflow inlet and concentrated gas flow export;
Described absorption is reclaimed bed and is provided with steam entry, concentrated airflow inlet, tail gas refluxing opening, humid air floss hole, mixture outlet and new wind entrance;
Concentrated gas flow export on described adsorptive purifier is connected with the concentrated airflow inlet on First Heat Exchanger, concentrated gas flow export on First Heat Exchanger is connected with the concentrated airflow inlet on the first cooler, concentrated gas flow export on first cooler is connected with the absorption concentrated airflow inlet reclaimed on bed, the exhaust gas recirculation mouth that absorption is reclaimed on bed is connected with the import of adsorption cleaning blower fan, the mixture outlet that described absorption is reclaimed on bed is connected with the entrance of condenser, the outlet of condenser is connected with the entrance of layering groove, layering groove is provided with solvent outlet and wastewater outlet, solvent outlet on layering groove is connected with solvent recovery groove,
The outlet of described first dry filter is connected with the new wind entrance on First Heat Exchanger, and the new wind outlet on First Heat Exchanger is connected with the entrance of heater, and the outlet of heater is connected with the desorption gas import on adsorptive purifier;
Desorption blower fan is provided with between new wind entrance on described First Heat Exchanger and the entrance of heater;
The import of described dehumidifying blower fan is connected with the entrance of desorption blower fan, and the outlet of dehumidifying blower fan is connected with the absorption new wind entrance reclaimed on bed;
The import of described cooling blower is connected with the outlet of the first dry filter, and the outlet of cooling blower is connected with the cooling air import of adsorptive purifier;
Described adsorptive purifier is adsorption cleaning fixed bed or zeolite runner adsorption cleaning system.
2. energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device according to claim 1, it is characterized in that: described retracting device also arranges the second heat exchanger, described second heat exchanger is provided with new wind entrance, new wind outlet, mixture intake and mixture outlet, the import of described dehumidifying blower fan exports with the new wind on the second heat exchanger and is connected, fresh inlet on described second heat exchanger exports with the new wind on First Heat Exchanger and is connected, the mixture outlet that described absorption is reclaimed on bed is connected with the mixture intake on the second heat exchanger, mixture outlet on second heat exchanger is connected with the entrance of condenser.
3. energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device according to claim 1, is characterized in that: described pretreatment system is the combination a kind of or more than two in wet scrubber, the second dry filter, the second cooler.
4. energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device according to claim 3, is characterized in that: described wet scrubber is rotating stream tray scrubber, cyclonic water film deduster, packed tower or high gravity dedusting device.
5. energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device according to claim 1, is characterized in that: described first cooler is surface cooler or heat exchange of heat pipe.
6. energy-efficient large-wind-volume low-concentration organic exhaust gas recycling and administration device according to claim 1, is characterized in that: arrange coating cloud filter cotton, primarily efficient filter wool in described first dry filter, medium air filtration is cotton, high efficiency filter is cotton, one or more combination in nonwoven cloth.
7. a kind of large-wind-volume low-concentration organic exhaust gas recycling and administration method of recycling and administration device according to claim 2, is characterized in that: described recovery method specifically comprises the following steps:
1) pretreatment: organic exhaust gas enters in pretreatment system and carries out pretreatment, makes organic exhaust gas coating cloud, particle concentration and organic exhaust gas temperature reach the requirement of post-processing process;
2) adsorption cleaning: enter in adsorption cleaning fixed bed or zeolite runner adsorption cleaning system through pretreated organic exhaust gas and carry out adsorbing separation purification, Elements in Organic Solvents is by the active carbon adsorption material absorption in adsorption cleaning fixed bed or adsorbed by the intrasystem zeolite molecular sieve sorbing material of zeolite runner adsorption cleaning, realize organic solvent to separate from organic exhaust gas, be purified through the organic exhaust gas be separated simultaneously;
3) desorption concentrate: when above-mentioned steps 2) in adsorption cleaning adopt adsorption cleaning fixed bed time, when the gas obtained through purification in adsorption cleaning fixed bed reaches exhaust gas concentration discharge standard value, the gas of purification is discharged from the purified gas outlet adsorption cleaning fixed bed, this adsorption cleaning fixed bed enters desorption and regeneration process simultaneously, desorption gas carries out desorption to the solvent be adsorbed in adsorptive purifier on active carbon, during formation contains, the concentrated air-flow of high levels of organic solvents, cooling blower is utilized to lower the temperature to active carbon after desorption, predetermined temperature to be down to then proceeds to adsorbed state,
When above-mentioned steps 2) in adsorption cleaning adopt zeolite runner adsorption cleaning system time, the runner of zeolite runner adsorption cleaning system continues to rotate with the speed of 1 ~ 6 turn per hour, when runner subregion goes to desorption district, desorption gas carries out desorption to the organic solvent be adsorbed on zeolite, form the concentrated air-flow containing middle and high concentration organic solvent, after desorption, runner rotates and utilizes cooling blower to cool zeolite molecular sieve to cooling zone, go to adsorption zone again and continue absorption organic exhaust gas, adsorption zone, cooling zone and desorption district alternate wheel turn, and realize carrying out continuously;
4) cooling absorption: the concentrated gas that above-mentioned desorption is formed flows through after First Heat Exchanger carries out one-level cooling to it, its temperature is made to drop to the preference temperature of charcoal absorption by the first cooler secondary cooling of rear end again, the absorption that concentrated gas through cooling flows through the built-in sorbing material in rear end is reclaimed in bed and is adsorbed, majority of organic solvent in concentrated air-flow is adsorbed by sorbing material, and concentrated air-flow is introduced the output of pretreatment system with after pretreated organic exhaust gas mixes by the tail gas formed after sorbing material absorption by the tail gas refluxing opening that absorption is reclaimed on bed, enter purification further in adsorption cleaning fixed bed or zeolite runner adsorption cleaning system again,
5) desorption reclaims: the mode adopting steam desorption, by steam, the organic solvent that in bed, sorbing material adsorbs is reclaimed in absorption and carry out desorption, desorption forms organic solvent-water gaseous mixture, after organic solvent-water gaseous mixture enters and carries out heat exchange in the second heat exchanger, cooling liquefaction again through condenser forms organic solvent-water mixed liquid, organic solvent-water mixed liquid is through the effect of layering groove, realize being separated of organic solvent and water, the organic solvent separated carries out reclaiming or purifying further, and the water separated processes further as waste water; In addition, after desorption, absorption reclaim sorbing material in bed the moisture that remain carry out eliminating moisture by the blower fan that dehumidifies;
Wherein, described step 3) in the formation method of desorption gas as follows: after the new wind of occurring in nature carries out high-effective dust-removing by the first dry filter to it, new wind enters in First Heat Exchanger and tentatively heats, the thermal source of First Heat Exchanger derive from concentrated air-flow that in adsorptive purifier, desorption is formed with heat, enter in the second heat exchanger through the preliminarily heated new wind of First Heat Exchanger and heat further, the thermal source of the second heat exchanger derive from absorption reclaim solvent-water gaseous mixture that bed desorption formed with heat, the new wind of further heating finally enters heater again, the temperature of heater to new wind regulates, it is made to reach the desorption temperature of adsorptive purifier, desorption gas needed for final formation.
8. recycling and administration method according to claim 7, is characterized in that: the active carbon adsorption material in described adsorption cleaning fixed bed is cellular activated carbon sorbing material.
9. recycling and administration method according to claim 7, is characterized in that: the sorbing material that described absorption is reclaimed in bed is activated carbon granule, column-shaped active carbon, NACF, cellular activated carbon or zeolite molecular sieve.
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