CN208032271U - A kind of low concentration big flow organic exhaust gas closed loop multistage recovery system - Google Patents

Abstract

A kind of low concentration big flow organic exhaust gas closed loop multistage recovery system, be by：VOC gas runner concentrates mechanism, low-temperature plasma purifier, desiccant body, recovering mechanism, solvent preprocessor, regeneration wind turbine, postposition wind turbine and heater and constitutes；Desiccant body is set on the right side of recovering mechanism, and on recovering mechanism top, VOC gas runner concentrates mechanism and is arranged on the downside of recovering mechanism the setting of solvent preprocessor, and low-temperature plasma purifier setting is on the right side of VOC gas runner concentration mechanism；The utility model proposes technical solution, having reached advantageous effect is：The utility model is concentrated by zeolite runner organic vapor concentrations concentrating the efficient gas concentrator that several times ensure tail gas qualified discharge simultaneously, the method being combined by concentration runner and using secondary absorption organic exhaust gas solves the problems, such as the exhaust-gas treatment of low concentration, Wind Volume, the organic exhaust gas organic efficiency of low concentration, huge discharge is improved, enterprise investment burden is reduced.

Description

A kind of low concentration big flow organic exhaust gas closed loop multistage recovery system

Technical field

The utility model is related to organic exhaust gas recycling field, especially a kind of low concentration big flow organic exhaust gas closed loop is multistage Recovery system.

Background technology

Currently, the intaglio press that plastics package printing industry exhaust treatment system is targeted, a ten color intaglio printings The main exhaust air rate about 30000m3/h of machine, VOCs concentration is about 1.5g/m3；Ground exhaust air rate about 20000m3/h；VOCs concentration is about 0.7g/m³；Belong to typical low concentration, the discharge of Wind Volume exhaust gas；Required exhaust treatment system is huge and operational efficiency is low；By Provide that the concentration of emission of non-methane total hydrocarbons is no more than 120mg/m3 in atmosphere pollutants emission standards；The parts such as Beijing, Shanghai Concentration of emission specified in provincial standard is lower；But for current waste gas recovery equipment, if emission is made to reach The operational efficiency of above-mentioned standard value, equipment will be greatly reduced, and equipment operating cost increases therewith, it is therefore desirable to which a kind of device solves Certainly the problem of the waste gas recovery inefficiency of low concentration, Wind Volume VOCs.

Utility model content

It is existing for solving the utility model proposes a kind of low concentration big flow organic exhaust gas closed loop multistage recovery system The problem of low concentration, Wind Volume VOCs waste gas recovery inefficiency.

The purpose of this utility model adopts the following technical scheme that realize：

A kind of low concentration big flow organic exhaust gas closed loop multistage recovery system, be by：VOC gas runner concentrates mechanism, low Warm plasma purifier, desiccant body, recovering mechanism, solvent preprocessor, regeneration wind turbine, postposition wind turbine and heater are constituted； Desiccant body is set on the right side of recovering mechanism, and the setting of solvent preprocessor concentrates mechanism in recovering mechanism top, VOC gas runner It is arranged on the downside of recovering mechanism, on the right side of VOC gas runner concentration mechanism, heater setting exists for low-temperature plasma purifier setting Gas runner concentrates on the left of mechanism, and VOC gas runner concentrates mechanism left lower and organic exhaust inlet pipe is arranged, and VOC gas turn Wheel concentration mechanism lower right side is provided with low-temperature plasma purifier, right side row's mouth setting exhaust of low-temperature plasma purifier Pipe, VOC gas runner concentration mechanism upper right, which is provided between regeneration row's mouth and the import for regenerating wind turbine, is arranged pipeline, regenerates Pipeline is set between the import of the air outlet and desiccant body of wind turbine, is arranged between the row mouthful of desiccant body and recovering mechanism import Pipeline, VOC gas runner concentration mechanism upper left-hand are provided with regeneration import, are set between recovering mechanism and the import of postposition wind turbine Pipeline is set, pipeline is set between the import of the air outlet and heater of postposition wind turbine, the outlet of heater and VOC gas runner are dense Pipeline is set between the regeneration import of contracting mechanism；The VOC gas runner concentration mechanism is zeolite runner concentrator, internal Be divided into treatment region, cooling zone and renewing zone, be it is a kind of organic vapor concentrations are concentrated into several times after the efficient gas that adsorbs it is dense Contracting equipment.

The recovering mechanism by first class absorber, second class absorber, condenser, desorption wind turbine and heat exchanger are constituted, The side of the first class absorber is provided with second class absorber, and the side of second class absorber is respectively set condenser, heat exchanger, takes off Pipeline, outlet and the desorption wind turbine of condenser is arranged in attached wind turbine, the suitable for reading of first class absorber between the import of condenser respectively Import between pipeline is set, pipeline is respectively provided between the outlet of condenser and the suitable for reading of second class absorber, second class absorber It is suitable for reading that pipeline is set between the import of condenser, pipeline is set between the lower mouth and the outlet of desorption wind turbine of second class absorber, Be desorbed between the outlet and the import of heat exchanger of wind turbine and pipeline be set, be desorbed the outlet of wind turbine respectively with every first class absorber Pipeline is set between lower mouth, the outlet of heat exchanger respectively with the lower mouth of first class absorber, second class absorber lower mouth between be arranged Pipeline.

The first class absorber is that at least two adsorbers parallels using activated carbon as sorbing material form.

Regeneration wind turbine, postposition wind turbine and the desorption wind turbine is enclosed circulation wind turbine.

The utility model proposes technical solution, having reached advantageous effect is：The utility model is concentrated by zeolite runner The efficient gas concentrator that organic vapor concentrations concentration several times are ensured to tail gas qualified discharge simultaneously, by concentration runner and is adopted The exhaust-gas treatment that low concentration, Wind Volume are solved the problems, such as with the method that secondary absorption organic exhaust gas is combined improves low concentration, big The organic exhaust gas organic efficiency of discharge capacity reduces enterprise investment burden.

Description of the drawings

Fig. 1 is the utility model general assembly structural schematic diagram.

In figure：1, air inlet pipe, 2, VOC gas runner concentrate mechanism, 3, low-temperature plasma purifier, 4, desiccant body, 5, Recovering mechanism, 5-1, first class absorber, 5-2, second class absorber, 5-3, condenser, 5-4, desorption wind turbine, 5-5, heat exchanger, 6, Solvent preprocessor, 7, regeneration wind turbine, 8, postposition wind turbine, 9, heater, 10, exhaust pipe, 11, valve.

Specific implementation mode

The utility model is described further in conjunction with the drawings and specific embodiments：

A kind of low concentration big flow organic exhaust gas closed loop multistage recovery system as shown in Fig. 1, be by：VOC gas runner Concentrate mechanism 2, low-temperature plasma purifier 3, desiccant body 4, recovering mechanism 5, solvent preprocessor 6, regeneration wind turbine 7, postposition Wind turbine 8 and heater 9 are constituted；Desiccant body 4 is arranged in 5 right side of recovering mechanism, and solvent preprocessor 6 is arranged on recovering mechanism 5 Portion, VOC gas runner concentrate the setting of mechanism 2 in 5 downside of recovering mechanism, and the setting of low-temperature plasma purifier 3 turns in VOC gas 2 right side of wheel concentration mechanism, the setting of air inlet pipe 1 of heater 9 and organic exhaust gas is in 2 left side of gas runner concentration mechanism, organic waste Gas air inlet pipe 1 is connect with the absorption import of 2 left lower of VOC gas runner concentration mechanism, and it is right that VOC gas runner concentrates mechanism 2 Pipeline, the right side of low-temperature plasma purifier 3 are set between absorption exhaust outlet and the import of low-temperature plasma purifier 3 of side lower part Side arranges mouth and exhaust pipe 10 is arranged, and 2 upper right of VOC gas runner concentration mechanism is provided with regeneration and arranges mouth and regenerate the import of wind turbine Pipeline is set, pipeline, row mouthful and the recycling of desiccant body 4 are set between the air outlet and the import of desiccant body 4 of regeneration wind turbine 7 Pipeline is set between mechanism 5, and VOC gas runner concentrates 2 left upper portion of mechanism, between recovering mechanism 5 and the import of postposition wind turbine 8 Pipeline is set, pipeline, the outlet of heater 9 and VOC gas are set between the air outlet and the import of heater 9 of postposition wind turbine 8 Pipeline is set between the regeneration import of runner concentration mechanism 2；The VOC gas runner concentration mechanism 2 concentrates for zeolite runner Equipment, inside are divided into treatment region, cooling zone and renewing zone, are a kind of height for concentrating organic vapor concentrations and being adsorbed after several times Imitate gas concentration equipment；The recovering mechanism 5 is by first class absorber 5-1, second class absorber 5-2, condenser 5-3, desorption wind Machine 5-4 and heat exchanger 5-5 are constituted, and the side of the first class absorber 5-1 is provided with second class absorber 5-2, second class absorber 5-2 Side be respectively set condenser 5-3, heat exchanger 5-5, desorption wind turbine 5-4, first class absorber 5-1 it is suitable for reading respectively with condenser Pipeline is set between the import of 5-3, pipeline, condenser 5- are set between the outlet and the import of desorption wind turbine 5-4 of condenser 5-3 Be respectively provided with pipeline between 3 outlet and the suitable for reading of second class absorber 3-2, the suitable for reading and condenser 5-3 of second class absorber 5-2 into Pipeline is set between mouthful, pipeline, desorption wind turbine 5-4 are set between the lower mouth and the outlet of desorption wind turbine 5-4 of second class absorber 5-3 Outlet and the import of heat exchanger 5-5 between pipeline is set, the outlet of desorption wind turbine 5-4 respectively with every first class absorber 5-1 Lower mouth between pipeline is set, the outlet of heat exchanger 5-5 respectively under the lower mouth of first class absorber 5-1, second class absorber 5-2 Pipeline is set between mouthful, valve 11 is both provided in the connecting pipe；The first class absorber 5-1 is at least two Adsorbers parallel using activated carbon as sorbing material forms；The regeneration wind turbine 7, postposition wind turbine 8 and desorption wind turbine 5-4 are equal For enclosed circulation wind turbine.

Application method：When carrying out the VOCs treatment of VOC, passed through first from air inlet 1 by the organic exhaust gas containing VOC Pipeline, which enters in VOC gas runner concentration mechanism 2, to be adsorbed, and the organic of VOC is contained in the inside of VOC gas runner concentration mechanism 2 It is discharged after exhaust-gas treatment absorption, the gas that is cleaned of discharge enters purified treatment guarantee tail gas in low-temperature plasma purifier 3 It is discharged through exhaust pipe 10 after up to standard；The hot wind that heater 9 generates concentrates VOC gas runner by pipeline the renewing zone of mechanism 2 Hot wind is inputted, the VOC being adsorbed in concentration runner is handled through hot wind in renewing zone and is desorbed, concentrates, and regeneration air is from regeneration Mouth discharge is arranged, dehumidifying in desiccant body 4 is sent into through regenerating wind turbine 7, is sent into first class absorber 5-1 and is inhaled through pipeline after dehumidifying Attached, by pipeline to postposition wind turbine 8, clean gas is delivered to the clean gas of first class absorber 5-1 discharges by postposition wind turbine 8 Heater 9, moves in circles by above step；

After first class absorber 5-1 saturations, the hot wind that heat exchanger 5-5 is generated enters through pipeline in first class absorber 5-1, makes one Temperature gradually rises in grade absorber 5-1, and VOC gas is generated after the VOC solvent adsorbed in first class absorber 5-1 activated carbons is heated Body, the interior high temperature VOC gas generated of first class absorber 5-1, which enter in condenser 5-3, to be cooled, and is conducive to second class absorber 5-2 Adsorption recovery, condenser 5-3 VOC gas after cooling enter second class absorber 5-2 through pipeline by the suitable for reading of second class absorber 5-2 Interior to be adsorbed, desorption wind turbine 5-4 extracts the low concentration VOC gas in second class absorber 5-2 from the lower mouth of second class absorber 5-2 out Afterwards, low concentration VOC gas are conveyed into heat exchanger 5-5 and are heated, is again introduced into after heating in first class absorber 5-1, press more than Operating procedure moves in circles, until stopping after the completion of first class absorber 5-1 desorptions；After first class absorber 5-1 desorptions, heat exchanger 5-5 stops heating, and condenser 5-3 continues to be passed through cooling water, and desorption wind turbine 5-4 leads to after the cold air extraction in condenser 5-3 Piping is directly transported without heat exchanger 5-5 in first class absorber 5-1, and the waste heat in first class absorber 5-1 makes cold air Temperature be stepped up, the temperature in first class absorber 5-1 gradually reduces, and hot-air enters through pipeline in condenser 5-3, by with Upper operating procedure moves in circles, until after the temperature in first class absorber 5-1 reaches normal temperature, first class absorber 5-1 is opened again Beginning adsorption operation；

After second class absorber 5-2 saturations, the hot wind that heat exchanger 5-5 is generated enters through pipeline in second class absorber 5-2, makes Temperature gradually rises in second class absorber 5-2, and high concentration VOC gas is generated after the VOC solvent adsorbed in second class absorber 5-2 is heated Body, the interior high concentration VOC gas generated of second class absorber 5-2, which enter in condenser 5-3, to be condensed, and condenser 5-3 can be condensed Most of VOC gas become VOC solvent, and the VOC solvent generated after condensation is flowed into solvent preprocessor 6 through pipeline and is processed into gently Finished product and height boiling finished product are boiled, the remaining VOC gas not being condensed are sent into through wind turbine 5-4 is desorbed in heat exchanger 5-5 in condenser 5-3 Heating enters second class absorber 5-2, moves in circles by the above operating procedure after heating, until after the completion of second class absorber 5-2 desorptions Stop.

The non-detailed portion of the utility model is the prior art.

Claims (4)

1. a kind of low concentration big flow organic exhaust gas closed loop multistage recovery system, it is characterized in that：By VOC gas runner thickener Structure, low-temperature plasma purifier, desiccant body, recovering mechanism, solvent preprocessor, regeneration wind turbine, postposition wind turbine and heater It constitutes；Desiccant body is set on the right side of recovering mechanism, and the setting of solvent preprocessor is in recovering mechanism top, the concentration of VOC gas runner Mechanism is arranged on the downside of recovering mechanism, and on the right side of VOC gas runner concentration mechanism, heater is set for low-temperature plasma purifier setting It sets on the left of gas runner concentration mechanism, VOC gas runner concentrates mechanism left lower and organic exhaust inlet pipe, VOC gas is arranged Body runner concentration mechanism lower right side is provided with low-temperature plasma purifier, the right side row mouth setting row of low-temperature plasma purifier Tracheae, VOC gas runner concentration mechanism upper right are provided with regeneration row's mouth and regenerate the import setting pipeline of wind turbine, regenerate wind Pipeline is set between the import of the air outlet and desiccant body of machine, the row mouthful and the import of recovering mechanism adsorbent equipment of desiccant body it Between pipeline is set, VOC gas runner concentration mechanism upper left-hand is provided with regeneration import, the import of recovering mechanism and postposition wind turbine Between pipeline is set, pipeline, the outlet of heater and VOC gas are set between the import of the air outlet and heater of postposition wind turbine Pipeline is set between the regeneration import of runner concentration mechanism；The VOC gas runner concentration mechanism is that the concentration of zeolite runner is set Standby, inside is divided into treatment region, cooling zone and renewing zone, be it is a kind of by organic vapor concentrations concentrate several times after adsorb it is efficient Gas concentration equipment.

2. a kind of low concentration big flow organic exhaust gas closed loop multistage recovery system according to claim 1, it is characterized in that：Institute The recovering mechanism stated is made of first class absorber, second class absorber, condenser, desorption wind turbine and heat exchanger, the primary adsorption The side of device is provided with second class absorber, and condenser, heat exchanger, desorption wind turbine, level-one is respectively set in the side of second class absorber Pipeline is arranged in the suitable for reading of absorber between the import of condenser respectively, is set between the outlet and the import of desorption wind turbine of condenser Pipeline is set, pipeline, the suitable for reading and condenser of second class absorber are respectively provided between the outlet of condenser and the suitable for reading of second class absorber Import between pipeline is set, the lower mouth of second class absorber and be desorbed between the outlet of wind turbine pipeline be set, going out for wind turbine is desorbed Pipeline is set between mouth and the import of heat exchanger, the outlet that wind turbine is desorbed is arranged between the lower mouth of every first class absorber respectively Pipeline, heat exchanger outlet respectively with the lower mouth of first class absorber, second class absorber lower mouth between pipeline is set.

3. a kind of low concentration big flow organic exhaust gas closed loop multistage recovery system according to claim 2, it is characterized in that：Institute The first class absorber stated is that at least two adsorbers parallels using activated carbon as sorbing material form.

4. a kind of low concentration big flow organic exhaust gas closed loop multistage recovery system according to claim 1, one of 2, special Sign is：Regeneration wind turbine, postposition wind turbine and the desorption wind turbine is enclosed circulation wind turbine.