CN205495288U - Near zero emission's gaseous resource recovery processing device of VOCs - Google Patents

Near zero emission's gaseous resource recovery processing device of VOCs Download PDF

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Publication number
CN205495288U
CN205495288U CN201620039041.6U CN201620039041U CN205495288U CN 205495288 U CN205495288 U CN 205495288U CN 201620039041 U CN201620039041 U CN 201620039041U CN 205495288 U CN205495288 U CN 205495288U
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China
Prior art keywords
gas
organic
adsorbent equipment
desorption
concentration
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CN201620039041.6U
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Chinese (zh)
Inventor
周志茂
张桂华
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张桂华
周志茂
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Priority to CN201620039041.6U priority Critical patent/CN205495288U/en
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Publication of CN205495288U publication Critical patent/CN205495288U/en

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Abstract

The utility model discloses a near zero emission's gaseous resource recovery processing device of VOCs, include the adsorption equipment of constitutions such as gas buffer tank, absorbing device, heat exchanger, desorption device, condenser, active carbon and activated carbon fiber or molecular sieve etc, high -concentration organic waste gas gets into absorbing device, and the absorption liquid that contains the organic matter is regenerated through the desorption device to obtain pure organic solvent, the exhaust of absorbing device's low concentration gets into adsorption equipment, and the back is up to standard gaseously discharges from the adsorption equipment top through adsorbing, and adsorption equipment separates and sends into absorbing device by the fan again behind the high concentration gas entering gas buffer tank who sees follows and absorb. The utility model discloses the range of application is extensive, and the organic waste gas who is applicable to higher concentration and lower concentration simultaneously administers and the organic matter recovery, and purification efficiency is high, the product rate of recovery is high, simple structure, low in manufacturing cost, and the working costs is low, has realized resource -effective economic benefits and discharge to reach standard's environmental protection profit.

Description

A kind of VOCs gas resource recycling and processing device of near-zero release
Technical field
This utility model relates to the recycling and processing device of organic gas, particularly relates to the VOCs gas money of a kind of near-zero release Source recycling and processing device.
Background technology
VOC is referred to as VOCs(Volatile Organic Compouds) generally refer at room temperature normal Pressure saturated vapour pressure > 70Pa, the general name of organic compound of boiling point < 260 DEG C, including aliphatic hydrocarbon, aromatic hydrocarbon, containing halocarbon Class, oxygen-containing hydro carbons, nitrogen-containing hydrocarbons and sulfur-bearing hydro carbons etc..It is widely used in each chemical engineering industry process, such as petrochemical industry, pharmacy, The industries such as printing, furniture, in these solvents, a part is drained with waste water, and quite a few is drained into greatly with the form of organic exhaust gas In gas.The healthy of people is not only caused directly injury by VOCs discharge, and the air depending on people for existence is made too Become to destroy, also create the wasting of resources, potential safety hazard and production high cost.
Compared with SOx, NOx and particulate matter, the composition of VOCs is many, and concentration of emission fluctuation is big, and Treatment process system is complicated, relates to And ten multiple technologies and combination technique.The administering method of volatile organic waste gas has a lot, and total is divided into destruction method and absorption method. Destruction method can be divided into again combustion method (include directly burning, flame combustion burns) and bioanalysis with catalysis, and absorption method can be divided into again Absorption process, absorption method, condensation method, membrane separation process etc..The Treatment process that range of application is the widest at present mainly includes that skill is reclaimed in absorption Art, Adsorption Concentration technology, catalytic combustion technology, high temperature incineration technology, lower temperature plasma technology and bioremediation Technology etc..Mirror Industry in organic solvent application is very wide, kind is a lot, so it is very important for selecting suitable recovery method again.Have The resource of machine solvent reclaims, and can meet environment protection emission requirement and realize environmental benefit, can realize again resource circulation utilization, take Obtain economic benefit necessarily.Therefore, Technologies for Recovery of Organic Solvents becomes the field that people pay special attention to.
Absorption is a kind of chemical industry method of maturation, the status that also occupation ratio is more important in waste gas pollution control and treatment.Absorption techniques is Utilize liquid-absorbant directly to contact with waste gas and from waste gas, remove Organic substance to absorbing liquid.Absorption is divided into Physical Absorption and change Learn and absorb.Solvent recovery is Physical Absorption, and normally used absorbent is water, diesel oil, kerosene or other difficult solvent flashings etc..When After absorbent absorbs a certain amount of organic solvent, need to further process and absorbent is desorbed organic solvent.Traditional desorbing Mode is alternating temperature or transformation process.Owing to place is extremely strict, in order to protect to the emission request of volatile organic matter in gaseous mixture The gas handled well of card can qualified discharge, so the absorbing liquid large usage quantity of absorption process, the volatility in absorbing liquid is organic Substrate concentration also can be relatively low, and this brings the biggest difficulty to follow-up still-process, needs to use the more energy, so reclaiming Cost is the highest.
Condensation method is simplest recovery technology, is to be cooled down by waste gas so that it is temperature is less than organic dew point temperature, makes Organic substance is condensed into drop, is directly separated out from waste gas, reclaims.Under normal operating conditions, steam due to Organic substance The restriction of air pressure, leaves and still contains certain density VOC in the discharge gas of condenser, typically can not meet environmental emission standard. Obtaining the high response rate, system needs the highest pressure or the lowest temperature, and cost of equipment significantly increases.
Absorption method early have been used for printing, electronics, spray paint, the industry such as adhesive organic to benzene, dimethylbenzene, carbon tetrachloride etc. Solvent reclaims.In recent years, due to formulation and the execution of stricter environmental regulation, low concentration, the having of Wind Volume In the recycling of machine gas, the application of absorption method device day by day increases, but adsorbent reactivation problem causes greatly to be paid close attention to, single The adsorption method not regenerated gradually is used by restriction.In order to improve adsorption efficiency and reduce operating cost, many alternately regeneration or Runner adsorbs continuously and desorbs technique and be gradually used widely.The conventional active charcoal of adsorbing material, NACF, silica gel and Molecular sieves etc., activated carbon uses extensively, and granule charcoal, column charcoal and NACF have use, on-site steam regeneration or steam Body regenerates, the condensed recovery of regeneration off gases VOCs therein composition.Molecular sieve is inorganic adsorbing material, and hydrophobic molecule sieve is extensively used Administer in industry VOCs such as petrochemical industry, spraying, also begin to use at pharmaceutical industry.Absorption method disadvantage is that to be removed waste gas Dirt, except water pretreatment, otherwise adsorption effect can be impacted, and due to adsorbent adsorption capacity limit, high concentration is had Machine waste-gas adsorbant needs frequent regeneration, so and inapplicable adsorbent equipment.
Industrial organic exhaust gas situation is complicated in actual applications, and monotechnics is difficult to solution problem, it is therefore desirable to according to useless Gas feature selects multiple technologies to form technical combinations, plays the advantage of different technologies, reaches to process target.
Summary of the invention
This utility model is to combine absorption process with absorption method to solve present waste gas pollution control and treatment problem, proposes a kind of near The VOCs gas resource recycling and processing device of zero-emission, whole device only one of which gas discharge outlet and an Organic substance go out Mouthful.By the organic concentration between appropriate design absorption plant and adsorbent equipment, the organic gas of high concentration passes through condenser Rear entrance absorption plant, the organic gas of the low concentration after absorption plant adsorbed by adsorbent equipment after qualified discharge, inhale High concentration organic gas after adsorption device concentrates enters absorption plant, then by adsorbent equipment complete for the Organic substance in gas Absorption reaches qualified discharge after emission request.Thus can be in the case of ensureing that discharge gas is up to standard, absorbing liquid concentration Improve, thus reduce the quantity of steam of desorbing, and reduce stripping apparatus volume, so that investment cost and operating cost subtract Few, greatly improve project economics.Absorption plant and continuous adsorbent equipment are carried out system coupling, can effectively reclaim Organic solvent in waste gas, reaches the Organic substance response rate and is more than 99%, be substantially free of organic thing in the gas of discharge, can row up to standard Put.This device is applicable to the organic gas of various concentration, can save substantial amounts of energy resource consumption, can greatly improve currently with absorption Method absorbs that organic solvent energy consumption is high, condensation method organic efficiency is low and absorption method absorption regeneration is frequent, operating cost is high, ran The problem that journey potential safety hazard is big.
Technical solution adopted in the utility model is: the organic gas resource recycling dress of a kind of near-zero release Putting, including gas buffer tank (1), blower fan (2), cooler (3), absorption plant (4), dnockout pump (5), heat exchanger (6), desorbing fills Put (7), delivery pump (8), condenser (9), organic solvent finished product storage tank (10), cleaner unit (11), adsorbent equipment (12), aerofluxus wind Machine (13), heater (14);
Absorption plant (4) top is provided with air vent and is connected with adsorbent equipment (12) air inlet, and absorption plant is containing organic Absorbing liquid passes through dnockout pump (5) inflow heat exchanger (6) import, and the absorbing liquid outlet of heat exchanger is entered with the feed liquid of desorption apparatus (7) Mouth is connected.
Desorption apparatus (7) is by absorbing by delivery pump (8) feeding heat exchanger (6) without organic absorbing liquid after desorbing Liquid import, the outlet of heat exchanger (6) absorbing liquid is connected with the absorbing liquid import of absorption plant (4).Having after desorption apparatus (7) desorbing Machine gas enters condenser (9) gas feed from desorption apparatus gas outlet.
The organic solvent outlet of condenser (9) is connected with organic solvent finished product storage tank (10) import, fixed gas outlet and suction Adsorption device (12) air inlet is connected.
The air inlet of adsorbent equipment (12) is connected with the gas outlet of cleaner unit (11), after adsorbent equipment (12) adsorption cleaning Air through air exhauster (13) discharge.Adsorbent equipment (12) inlet part gas heater via (14) is passed through adsorbent equipment (12) Middle high temperature desorbs, and solves the attached high concentrations of gas containing organic solvent and sends into gas buffer tank (1) entrance, and then carries out organic molten Agent absorbs.
Organic exhaust gas for higher concentration is absorbed, by sieve by gas buffer tank and blower fan entrance absorption plant Selecting absorbent, improve the efficiency of absorption plant, control the concentration of absorbing liquid, the aerofluxus of absorption plant is that low concentration organic gas enters Entering the adsorbent equipment of the compositions such as activated carbon, activated carbon fiber, molecular sieve, gas up to standard after absorption is from adsorbent equipment top gas Body evacuation port discharges.What adsorbent equipment desorbed enters back into absorption dress containing after organic high concentrations of gas entrance gas buffer tank Put and absorb.Absorption plant absorbing liquid out is regenerated by desorption apparatus, obtains pure organic solvent.
For the organic exhaust gas of low concentration, activated carbon, activated carbon fiber, molecular sieve can be entered after dedusting pretreatment Deng the adsorbent equipment of composition, gas up to standard after absorption discharges from top gas evacuation port.What adsorbent equipment desorbed has The high concentrations of gas of machine thing is sent into absorption plant by blower fan again after entering gas buffer tank and is absorbed.Absorption plant suction out Receive liquid to be regenerated by desorption apparatus, obtain pure organic solvent.
Being provided with 1 ~ 3 grade of liquid distribution trough in absorption plant, inside is distributed column plate or filler.Absorbing liquid is water, ionic liquid The mixed solution of one or more in body, high boiling alkane, N-Methyl pyrrolidone, machine oil, white oil, cyclodextrin.
Being provided with 1 ~ 3 grade of liquid distribution trough in desorption apparatus, inside is distributed column plate or filler.
Adsorbent equipment can be provided with 1 ~ 5 grade, to improve organic efficiency and to run continuously.
Use and have the beneficial effects that produced by technique scheme: this utility model is applied widely, it is adaptable to higher Concentration and the improvement of low concentration organic exhaust gas, purification efficiency is high, the resource that achieves organic substance to greatest extent reclaims, Simple in construction, low cost of manufacture, one-time investment is little, and operating cost is low;Absorption plant and adsorbent equipment are combined, can solve The problem that absorption plant purifies not thoroughly, cost is high and the scope of application of adsorbent equipment own is narrower, high efficiency purification waste gas And reclaim the organic solvent in waste gas, realize the environmental benefit of resource-effective economic benefit and qualified discharge simultaneously.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model;
Fig. 1 includes gas buffer tank 1, blower fan 2, cooler 3, absorption plant 4, dnockout pump 5, heat exchanger 6, desorption apparatus 7, Delivery pump 8, condenser 9, organic solvent finished product storage tank 10, cleaner unit 11, adsorbent equipment 12, air exhauster 13, heater 14;
Detailed description of the invention
Embodiment 1: the high concentration organic gas containing acetone is entered gas buffer tank 1 and entered by blower fan 2, cooler 3 Absorption plant 4 air inlet, absorption plant 4 top is provided with air vent and is connected with adsorbent equipment 12 air inlet, and absorption plant contains acetone Feed liquid enter heat exchanger 6 by dnockout pump 5, the acetone soln after heat exchange enters the liquor inlet of desorption apparatus 7.
Desorption apparatus 7, by the aqueous solution without acetone after desorbing, sends into heat exchanger 6 absorbing liquid import by delivery pump 8, The absorbing liquid import of absorption plant 4 is entered after carrying out heat exchange.Organic gas after desorption apparatus 7 desorbing goes out from desorption apparatus gas Mouth entrance condenser 9 gas phase import.
The organic solvent outlet of condenser 9 is connected with organic solvent finished product storage tank 10 import, and fixed gas enters adsorbent equipment The air inlet of 12.
Low concentration organic gas from absorption plant top vent enters adsorbent equipment 12, after adsorbent equipment adsorption cleaning Air discharge through air exhauster 13, desorb in adsorbent equipment 12 after the organic gas heater via 14 of part low concentration, solve The attached high concentrations of gas containing organic solvent sends into gas buffer tank 1, and then carries out organic solvent absorption.
Being provided with 2 grades of liquid distribution troughs in absorption plant, inside is distributed column plate or filler;2 grades of liquid it are provided with in desorption apparatus Body distributor, inside is distributed column plate or filler;Adsorbent equipment is molecular sieve runner enrichment facility, to improve organic efficiency and company Reforwarding row.
Embodiment 2: the low concentration organic gas containing dichloromethane enters adsorbent equipment 12, absorption dress through cleaner unit 11 Put the gas after adsorption cleaning to discharge through air exhauster 13, at adsorbent equipment after the organic gas heater via 14 of part low concentration Desorb in 12, solve the attached high concentrations of gas containing organic solvent and send into gas buffer tank 1.
Gas buffer tank 1 enters absorption plant 4 air inlet by blower fan 2, cooler 3, and absorption plant 4 top is provided with aerofluxus Mouth is connected with adsorbent equipment 12 air inlet, and absorption plant enters heat exchanger 6, after heat exchange containing organic feed liquid by dnockout pump 5 Feed liquid enter desorption apparatus 7 liquor inlet.
Desorption apparatus 7 by after desorbing without organic absorbing liquid, send into heat exchanger 6 absorbing liquid by delivery pump 8 and enter Mouthful, enter the absorbing liquid import of absorption plant 4 after carrying out heat exchange.Organic gas after desorption apparatus 7 desorbing is from desorption apparatus gas Body outlet enters condenser 9 gas phase import.
The organic solvent outlet of condenser 9 is connected with organic solvent finished product storage tank 10 import, and fixed gas enters adsorbent equipment The air inlet of 12.
Being provided with 2 grades of liquid distribution troughs in absorption plant, inside is distributed column plate or filler;2 grades of liquid it are provided with in desorption apparatus Body distributor, inside is distributed column plate or filler;Adsorbent equipment is to inhale activated carbon adsorption concentration tower three casees two, reclaims effect to improve Rate and running continuously.

Claims (5)

1. the VOCs gas resource recycling and processing device of a near-zero release, it is characterised in that: include gas buffer tank (1), Blower fan (2), cooler (3), absorption plant (4), dnockout pump (5), heat exchanger (6), desorption apparatus (7), delivery pump (8), condensation Device (9), organic solvent finished product storage tank (10), cleaner unit (11), adsorbent equipment (12), air exhauster (13), heater (14);
Absorption plant (4) top is provided with air vent and is connected with adsorbent equipment (12) air inlet, and absorption plant contains organic absorption Liquid passes through dnockout pump (5) inflow heat exchanger (6) import, the absorbing liquid outlet of heat exchanger and the liquor inlet phase of desorption apparatus (7) Even;
Desorption apparatus (7) is by entering by delivery pump (8) feeding heat exchanger (6) absorbing liquid without organic absorbing liquid after desorbing Mouthful, the outlet of heat exchanger (6) absorbing liquid is connected with the absorbing liquid import of absorption plant (4);Organic gas after desorption apparatus (7) desorbing Body enters condenser (9) gas feed from desorption apparatus gas outlet;
The organic solvent outlet of condenser (9) is connected with organic solvent finished product storage tank (10) import, fixed gas outlet and absorption dress Put (12) air inlet to be connected;
The air inlet of adsorbent equipment (12) is connected with the gas outlet of cleaner unit (11), the sky after adsorbent equipment (12) adsorption cleaning Gas is discharged through air exhauster (13);Adsorbent equipment (12) inlet part gas heater via (14) is passed through in adsorbent equipment (12) height Temperature desorbs, and solves the attached high concentrations of gas containing organic solvent and sends into gas buffer tank (1) entrance, and then carries out organic solvent suction Receive.
The VOCs gas resource recycling and processing device of a kind of near-zero release the most as claimed in claim 1, it is characterised in that: inhale It is provided with 1 ~ 3 grade of liquid distribution trough in receiving apparatus (4), column plate or filler inside device, are distributed.
The VOCs gas resource recycling and processing device of a kind of near-zero release the most as claimed in claim 1, it is characterised in that: solve It is provided with 1 ~ 3 grade of liquid distribution trough in inhaling device (7), column plate or filler inside device, are distributed.
The VOCs gas resource recycling and processing device of a kind of near-zero release the most as claimed in claim 1, adsorbent equipment (12) For fixed or rotary-type Adsorption Concentration device, it is characterised in that: adsorbing material selects molecular sieve, silica gel, activated carbon, activated carbon Fiber, meso-porous carbon material.
The VOCs gas resource recycling and processing device of a kind of near-zero release the most as claimed in claim 1, it is characterised in that: inhale Receipts liquid is one or more in water, ionic liquid, high boiling alkane, N-Methyl pyrrolidone, machine oil, white oil, cyclodextrin Mixed solution.
CN201620039041.6U 2016-01-17 2016-01-17 Near zero emission's gaseous resource recovery processing device of VOCs CN205495288U (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106474866A (en) * 2016-12-01 2017-03-08 石伟东 A kind of organic exhaust gas recycling equipment
CN106492591A (en) * 2016-11-07 2017-03-15 济南嘉禾瑞丰科技开发有限公司 The exploitation of new concentration runner and its application in VOCs is administered
CN106966434A (en) * 2017-03-25 2017-07-21 杭州明兴化工有限公司 A kind of method that hermetically sealed dioxygen oxidation method produces iron oxide
CN107297113A (en) * 2017-07-06 2017-10-27 常州大学 A kind of waste gas residual heat is reclaimed and pollutant integrated conduct method and system
CN108531213A (en) * 2018-04-26 2018-09-14 杭州立佳环境服务有限公司 A kind of purification recovery process of VOCs machine oil elution absorbing liquid
WO2018188375A1 (en) * 2017-04-14 2018-10-18 山东爱地高分子材料有限公司 Process for recovering dichloromethane in waste gas
CN109758870A (en) * 2018-12-12 2019-05-17 深圳市尤佳环境科技有限公司 A kind of VOC remover and preparation method thereof
CN111023713A (en) * 2019-03-11 2020-04-17 北京诺维新材科技有限公司 Solid drying method and system

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106492591A (en) * 2016-11-07 2017-03-15 济南嘉禾瑞丰科技开发有限公司 The exploitation of new concentration runner and its application in VOCs is administered
CN106492591B (en) * 2016-11-07 2019-02-05 济南嘉禾瑞丰科技开发有限公司 The exploitation of concentration runner and its application in VOCs improvement
CN106474866A (en) * 2016-12-01 2017-03-08 石伟东 A kind of organic exhaust gas recycling equipment
CN106966434A (en) * 2017-03-25 2017-07-21 杭州明兴化工有限公司 A kind of method that hermetically sealed dioxygen oxidation method produces iron oxide
WO2018188375A1 (en) * 2017-04-14 2018-10-18 山东爱地高分子材料有限公司 Process for recovering dichloromethane in waste gas
CN108722117A (en) * 2017-04-14 2018-11-02 山东爱地高分子材料有限公司 The recovery process of dichloromethane in a kind of exhaust gas
CN107297113A (en) * 2017-07-06 2017-10-27 常州大学 A kind of waste gas residual heat is reclaimed and pollutant integrated conduct method and system
CN108531213A (en) * 2018-04-26 2018-09-14 杭州立佳环境服务有限公司 A kind of purification recovery process of VOCs machine oil elution absorbing liquid
CN108531213B (en) * 2018-04-26 2021-01-08 杭州立佳环境服务有限公司 Purification and recovery process of VOCs engine oil leaching absorption liquid
CN109758870A (en) * 2018-12-12 2019-05-17 深圳市尤佳环境科技有限公司 A kind of VOC remover and preparation method thereof
CN111023713A (en) * 2019-03-11 2020-04-17 北京诺维新材科技有限公司 Solid drying method and system

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Effective date of registration: 20171110

Address after: 100086 Beijing city Haidian District Shuangyushu West 4-105

Patentee after: Zhang Guihua

Address before: 100086 Beijing city Haidian District Shuangyushu Sirirath building 4 105

Co-patentee before: Zhou Zhimao

Patentee before: Zhang Guihua

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TR01 Transfer of patent right

Effective date of registration: 20181210

Address after: 050000 Zhongjiejia No. 6, Xiyangling Industrial Zone, Shijiazhuang High-tech Zone, Hebei Province

Patentee after: Hebei Longyi Environmental Engineering Co., Ltd.

Address before: 100086 Shuangyushu Xili 4-105, Haidian District, Beijing

Patentee before: Zhang Guihua

TR01 Transfer of patent right