CN105381682A - VOC waste gas purification and recycle system - Google Patents

VOC waste gas purification and recycle system Download PDF

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Publication number
CN105381682A
CN105381682A CN201510785992.8A CN201510785992A CN105381682A CN 105381682 A CN105381682 A CN 105381682A CN 201510785992 A CN201510785992 A CN 201510785992A CN 105381682 A CN105381682 A CN 105381682A
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outlet
activated carbon
adsorption bed
desorption
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周全
黄永红
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Wisdri Engineering and Research Incorporation Ltd
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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
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Of Gases By Adsorption (AREA)

Abstract

The invention discloses a VOC waste gas purification and recycle system which comprises an adsorption fun, a static electricity oil trapping device and an activated carbon adsorption bed. An inlet of the static electricity oil trapping device is connected with an outlet of the adsorption fun through a gas pipe; an outlet of the static electricity oil trapping device is connected with an inlet of the activated carbon adsorption bed through a gas pipe; the outlet of the activated carbon adsorption bed is connected with an inlet of an air exhauster through a gas pipe. Oil mist and impurities in waste gas are removed by adopting the static electricity oil trapping device, so that the oil mist and impurities can not block the activated carbon adsorption bed; the activated carbon adsorption bed takes activated carbon as an adsorbing agent which is mainly used for adsorbing injurious ingredients in organic waste gas, and the clean gas after being subjected to static electricity oil trapping and adsorption is exhausted from an exhaust fan, so that the VOC waste gas containing tar can be purified efficiently and the exchange period of the adsorbing agent can be reduced.

Description

一种VOC废气净化回收系统A VOC exhaust gas purification and recovery system

技术领域technical field

本发明涉及工业生产中废气处理技术领域，具体涉及一种VOC废气净化回收系统。The invention relates to the technical field of waste gas treatment in industrial production, in particular to a VOC waste gas purification and recovery system.

背景技术Background technique

现有的焦油加工厂在生产中会产生洗苯后的排气以及各储罐呼吸气，此类废气含有甲苯、二甲苯、苯酚、萘等，为含VOC(挥发性有机物)废气，若不经过处理直接外排，将会对环境和人体产生危害，且违反了国家环保法规。目前消除含VOC废气的方法主要有化学吸收、吸附、催化氧化等方法。化学吸收法面临选择合适的吸收溶剂的问题，且有机废气的水溶性较差；催化氧化的气量太大，经济上不合算；吸附法应用最广，但由于焦油加工厂排出的废气中还含有焦油等物质，吸附时容易堵塞吸附剂，故传统的吸附法在用于含焦油的气体处理时具有局限性。Existing tar processing plants will produce exhaust gas after benzene washing and breathing gas from storage tanks during production. This type of exhaust gas contains toluene, xylene, phenol, naphthalene, etc., and is VOC (volatile organic compound) exhaust gas. If not Direct discharge after treatment will cause harm to the environment and human body, and violate the national environmental protection regulations. At present, the methods for eliminating VOC-containing exhaust gas mainly include chemical absorption, adsorption, catalytic oxidation and other methods. The chemical absorption method faces the problem of choosing a suitable absorption solvent, and the water solubility of the organic waste gas is poor; the gas volume of the catalytic oxidation is too large, which is not economical; the adsorption method is the most widely used, but because the waste gas discharged from the tar processing plant also contains Tar and other substances are easy to block the adsorbent during adsorption, so the traditional adsorption method has limitations in the treatment of tar-containing gas.

发明内容Contents of the invention

本发明要解决的技术问题是，针对现有技术存在的上述缺陷，一种VOC废气净化回收系统，使之能对含焦油的VOC废气进行高效净化，减少吸附剂的更换周期。The technical problem to be solved by the present invention is to provide a VOC waste gas purification and recovery system to efficiently purify tar-containing VOC waste gas and reduce the replacement cycle of the adsorbent for the above-mentioned defects in the prior art.

本发明为解决上述技术问题所采用的技术方案是：The technical scheme that the present invention adopts for solving the problems of the technologies described above is:

一种VOC废气净化回收系统，包括吸附风机、静电捕油装置和活性炭吸附床，所述静电捕油装置的进口通过输气管与吸附风机的出口连接，静电捕油装置的出口通过输气管与活性炭吸附床的进口连接，活性炭吸附床的出口通过输气管与排气风机的进口连接。A VOC waste gas purification and recovery system, comprising an adsorption fan, an electrostatic oil trapping device and an activated carbon adsorption bed, the inlet of the electrostatic oil trapping device is connected to the outlet of the adsorption fan through a gas delivery pipe, and the outlet of the electrostatic oil trapping device is connected to the activated carbon through a gas delivery pipe The inlet of the adsorption bed is connected, and the outlet of the activated carbon adsorption bed is connected with the inlet of the exhaust fan through a gas pipeline.

接上述技术方案，所述静电捕油装置和活性炭吸附床之间还设有气体缓冲罐，气体缓冲罐的进口通过输气管与静电捕油装置的出口连接，气体缓冲罐的出口通过输气管与活性炭吸附床的进口连接。In connection with the above technical scheme, a gas buffer tank is also provided between the electrostatic oil trapping device and the activated carbon adsorption bed, the inlet of the gas buffer tank is connected to the outlet of the electrostatic oil trapping device through a gas pipeline, and the outlet of the gas buffer tank is connected to the outlet of the gas buffer tank through a gas pipeline. Inlet connection for activated carbon adsorption bed.

接上述技术方案，所述活性炭吸附床包括第一吸附床和第二吸附床，第一吸附床与第二吸附床并联，气体缓冲罐的出口通过输气管经第一吸附球阀与第一吸附床的进口连接，第一吸附床的出口通过输气管经第二吸附球阀与排气风机进口连接，气体缓冲罐的出口通过输气管经第三吸附球阀与第二吸附床的进口连接，第二吸附床的出口通过输气管经第四吸附球阀与排气风机的进口连接。Connecting to the above technical scheme, the activated carbon adsorption bed includes a first adsorption bed and a second adsorption bed, the first adsorption bed and the second adsorption bed are connected in parallel, and the outlet of the gas buffer tank is connected to the first adsorption bed through the first adsorption ball valve through the gas pipeline. The outlet of the first adsorption bed is connected to the inlet of the exhaust fan through the second adsorption ball valve through the gas delivery pipe, the outlet of the gas buffer tank is connected to the inlet of the second adsorption bed through the third adsorption ball valve through the gas delivery pipe, and the second adsorption The outlet of the bed is connected with the inlet of the exhaust fan through the fourth adsorption ball valve through the gas delivery pipe.

接上述技术方案，净化回收系统还包括回收罐和脱附风机，脱附风机的出口通过输气管经第一吸附床连接与回收罐连接，脱附风机与第一吸附床之间设有第二脱附球阀，第一吸附床与回收罐之间设有第一脱附球阀，脱附风机的出口通过输气管经第二吸附床与回收罐连接，脱附风机与第二吸附床之间设有第四脱附球阀，第二吸附床与回收罐之间设有第三脱附球阀。In connection with the above technical scheme, the purification and recovery system also includes a recovery tank and a desorption fan. The outlet of the desorption fan is connected to the recovery tank through the first adsorption bed through a gas pipeline, and a second desorption fan is arranged between the desorption fan and the first adsorption bed. Desorption ball valve, the first desorption ball valve is provided between the first adsorption bed and the recovery tank, the outlet of the desorption fan is connected to the recovery tank through the second adsorption bed through the gas pipeline, and the desorption fan and the second adsorption bed are provided. There is a fourth desorption ball valve, and a third desorption ball valve is provided between the second adsorption bed and the recovery tank.

接上述技术方案，还包括余热换热器，脱附风机的出口通过输气管与余热换热器的进口连接，余热换热器的出口通过输气管经第二脱附球阀与第一吸附床连接，余热换热器的出口通过输气管经第四脱附球阀与第二吸附床连接。The above technical scheme also includes a waste heat exchanger, the outlet of the desorption fan is connected to the inlet of the waste heat exchanger through a gas delivery pipe, and the outlet of the waste heat exchanger is connected to the first adsorption bed through a second desorption ball valve through a gas delivery pipe , the outlet of the waste heat exchanger is connected to the second adsorption bed through the fourth desorption ball valve through the gas delivery pipe.

本发明具有以下有益效果：The present invention has the following beneficial effects:

1.采用静电捕油装置除去废气中的油雾及杂质，使之不堵塞活性炭吸附床，所述活性炭吸附床采用活性炭作为吸附剂，主要用于吸附有机废气中的有害成分，经静电捕油和吸附后的干净气体由排气风机排出，使之能对含焦油的VOC废气进行高效净化，减少吸附剂的更换周期。1. The electrostatic oil trapping device is used to remove the oil mist and impurities in the waste gas so that it does not block the activated carbon adsorption bed. The activated carbon adsorption bed uses activated carbon as the adsorbent, which is mainly used to adsorb harmful components in the organic waste gas. And the clean gas after adsorption is discharged by the exhaust fan, so that it can efficiently purify the VOC waste gas containing tar and reduce the replacement cycle of the adsorbent.

2.所述活性炭吸附床采用双吸附床，两吸附床进行交替吸附，其中一台吸附床吸附饱和后切换到脱附操作，同时另一台开始进行吸附操作，提高效率，不会因为要清理吸附床使生产线停机清理。2. The activated carbon adsorption bed adopts double adsorption beds, and the two adsorption beds are alternately adsorbed. One of the adsorption beds is saturated and switched to desorption operation, and the other one starts the adsorption operation at the same time, so as to improve efficiency and avoid cleaning up. Adsorbent beds shut down the line for cleaning.

附图说明Description of drawings

图1是本发明实施例中VOC废气净化回收系统的示意图；Fig. 1 is the schematic diagram of VOC waste gas purification recovery system in the embodiment of the present invention;

图中，1-吸附风机，2-静电捕油装置，3-气体缓冲罐，4-第一吸附床，5-第二吸附床，6-排气风机，7-脱附风机，8-余热换热器，9-回收罐，10-第一吸附球阀，11-第二吸附球阀，12-第一脱附球阀，13-第二脱附球阀，14-第三吸附球阀，15-第四吸附球阀，16-第三脱附球阀，17-第四脱附球阀。In the figure, 1-adsorption fan, 2-electrostatic oil trapping device, 3-gas buffer tank, 4-first adsorption bed, 5-second adsorption bed, 6-exhaust fan, 7-desorption fan, 8-waste heat Heat exchanger, 9-recovery tank, 10-first adsorption ball valve, 11-second adsorption ball valve, 12-first desorption ball valve, 13-second desorption ball valve, 14-third adsorption ball valve, 15-fourth Adsorption ball valve, 16-the third desorption ball valve, 17-the fourth desorption ball valve.

具体实施方式detailed description

下面结合附图和实施例对本发明进行详细说明。The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

参照图1所示，本发明提供的一个实施例中的VOC废气净化回收系统，包括吸附风机1、静电捕油装置2和活性炭吸附床，所述静电捕油装置2的进口通过输气管与吸附风机1的出口连接，静电捕油装置2的出口通过输气管与活性炭吸附床的进口连接，活性炭吸附床的出口通过输气管与排气风机6的进口连接；采用静电捕油装置2除去废气中的油雾及杂质，使之不堵塞活性炭吸附床，所述活性炭吸附床采用活性炭作为吸附剂，主要用于吸附有机废气中的有害成分，经静电捕油和吸附后的干净气体由排气风机6排出。Referring to Fig. 1, the VOC exhaust gas purification and recovery system in one embodiment provided by the present invention includes an adsorption fan 1, an electrostatic oil trapping device 2 and an activated carbon adsorption bed. The outlet of the fan 1 is connected, the outlet of the electrostatic oil trapping device 2 is connected with the inlet of the activated carbon adsorption bed through the gas pipeline, and the outlet of the activated carbon adsorption bed is connected with the inlet of the exhaust fan 6 through the gas pipeline; the electrostatic oil trapping device 2 is used to remove the waste gas oil mist and impurities, so that it does not block the activated carbon adsorption bed. The activated carbon adsorption bed uses activated carbon as the adsorbent, which is mainly used to adsorb harmful components in the organic waste gas. The clean gas after electrostatic oil capture and adsorption is discharged by the exhaust fan. 6 discharge.

进一步地，所述静电捕油装置2和活性炭吸附床之间还设有气体缓冲罐3，气体缓冲罐3的进口通过输气管与静电捕油装置2的出口连接，气体缓冲罐3的出口通过输气管与活性炭吸附床的进口连接；Further, a gas buffer tank 3 is also provided between the electrostatic oil trapping device 2 and the activated carbon adsorption bed, the inlet of the gas buffer tank 3 is connected to the outlet of the electrostatic oil trapping device 2 through a gas pipeline, and the outlet of the gas buffer tank 3 passes through The gas pipeline is connected to the inlet of the activated carbon adsorption bed;

进一步地，所述活性炭吸附床包括第一吸附床4和第二吸附床5，第一吸附床4与第二吸附床5并联，气体缓冲罐3的出口通过输气管经第一吸附球阀10与第一吸附床4的进口连接，第一吸附床4的出口通过输气管经第二吸附球阀11与排气风机6进口连接，气体缓冲罐3的出口通过输气管经第三吸附球阀14与第二吸附床5的进口连接，第二吸附床5的出口通过输气管经第四吸附球阀15与排气风机6的进口连接；所述活性炭吸附床采用双吸附床，两吸附床进行交替吸附，其中一台吸附床吸附饱和后切换到脱附操作，同时另一台开始进行吸附操作。Further, the activated carbon adsorption bed includes a first adsorption bed 4 and a second adsorption bed 5, the first adsorption bed 4 and the second adsorption bed 5 are connected in parallel, and the outlet of the gas buffer tank 3 passes through the gas pipeline through the first adsorption ball valve 10 and The inlet of the first adsorption bed 4 is connected, the outlet of the first adsorption bed 4 is connected with the inlet of the exhaust fan 6 through the second adsorption ball valve 11 through the gas delivery pipe, and the outlet of the gas buffer tank 3 is connected with the third adsorption ball valve 14 through the gas delivery pipe. The inlet of the two adsorption beds 5 is connected, and the outlet of the second adsorption bed 5 is connected with the inlet of the exhaust fan 6 through the fourth adsorption ball valve 15 through the air pipe; the activated carbon adsorption bed adopts double adsorption beds, and the two adsorption beds carry out alternate adsorption. One of the adsorption beds switches to the desorption operation after the adsorption is saturated, and the other one starts the adsorption operation at the same time.

进一步地，净化回收系统还包括回收罐9和脱附风机7，脱附风机7的出口通过输气管经第一吸附床4连接与回收罐9连接，脱附风机7与第一吸附床4之间设有第二脱附球阀13，第一吸附床4与回收罐9之间设有第一脱附球阀12，脱附风机7的出口通过输气管经第二吸附床5与回收罐9连接，脱附风机7与第二吸附床5之间设有第四脱附球阀17，第二吸附床5与回收罐9之间设有第三脱附球阀16；脱附时由脱附风机7吹热空气进入饱和的吸附床，使其脱附再生，脱附后的浓缩气体进入回收罐9收集。Further, the purification recovery system also includes a recovery tank 9 and a desorption blower 7, the outlet of the desorption blower 7 is connected to the recovery tank 9 through the first adsorption bed 4 through a gas pipeline, and the connection between the desorption blower 7 and the first adsorption bed 4 There is a second desorption ball valve 13 between them, a first desorption ball valve 12 is provided between the first adsorption bed 4 and the recovery tank 9, and the outlet of the desorption blower 7 is connected to the recovery tank 9 through the second adsorption bed 5 through the gas pipeline. , the fourth desorption ball valve 17 is provided between the desorption fan 7 and the second adsorption bed 5, and the third desorption ball valve 16 is provided between the second adsorption bed 5 and the recovery tank 9; Blow hot air into the saturated adsorption bed for desorption and regeneration, and the desorbed concentrated gas enters the recovery tank 9 for collection.

进一步地，还包括余热换热器8，脱附风机7的出口通过输气管与余热换热器8的进口连接，余热换热器8的出口通过输气管经第二脱附球阀13与第一吸附床4连接，余热换热器8的出口通过输气管经第四脱附球阀17与第二吸附床5连接；脱附所用热空气利用工厂废热，节约了能量。Further, it also includes a waste heat exchanger 8, the outlet of the desorption fan 7 is connected to the inlet of the waste heat exchanger 8 through a gas delivery pipe, and the outlet of the waste heat exchanger 8 is connected to the first desorption ball valve 13 through a gas delivery pipe. The adsorption bed 4 is connected, and the outlet of the waste heat exchanger 8 is connected to the second adsorption bed 5 through the fourth desorption ball valve 17 through the gas pipeline; the hot air used for desorption utilizes the waste heat of the factory to save energy.

本发明的一个实施例中，本发明的工作原理：In one embodiment of the present invention, the working principle of the present invention:

吸附操作：焦化厂含VOC废气通过吸附风机1进入废气处理系统，废气首先经过静电捕油装置2进行预处理，除去废气中的焦油和灰尘等杂质，然后进入气体缓冲罐3，在其中进行均压，均压后的气体进入第一吸附床4，此时第一吸附球阀10打开，废气中的VOC等有害物质通过第一吸附床4内的活性炭进行吸附，经吸附后的净化气体由排气风机6排入大气；当第一吸附床4吸附达到饱和时，则关闭第一吸附球阀10，打开第三吸附球阀14，使废气经过第二吸附床5进入吸附通道。Adsorption operation: VOC-containing exhaust gas from the coking plant enters the exhaust gas treatment system through the adsorption fan 1. The exhaust gas is first pretreated by the electrostatic oil trap 2 to remove impurities such as tar and dust in the exhaust gas, and then enters the gas buffer tank 3, where it is homogenized. The gas after pressure equalization enters the first adsorption bed 4. At this time, the first adsorption ball valve 10 is opened, and harmful substances such as VOC in the exhaust gas are adsorbed by the activated carbon in the first adsorption bed 4. The purified gas after adsorption is discharged The air blower 6 is discharged into the atmosphere; when the adsorption of the first adsorption bed 4 reaches saturation, the first adsorption ball valve 10 is closed, and the third adsorption ball valve 14 is opened, so that the waste gas enters the adsorption channel through the second adsorption bed 5 .

脱附操作：当第二吸附床5进行吸附时，可对第一吸附床4进行脱附，此时将环境空气通过脱附风机7进入系统，然后经过余热换热器8加热成热空气，余热换热器8所用的热源为工厂废热。从余热换热器8出来的热空气进入第一吸附床4，此时第二脱附球阀13打开，热空气将床层内吸附的VOC等有害物质进行脱附，脱附气体中的有害物质已被高度浓缩，然后将脱附气体通入回收罐9储存，然后可根据具体需要将脱附的浓缩气体进行回收利用或将浓缩气体送至催化燃烧装置进行完全消解。Desorption operation: when the second adsorption bed 5 is performing adsorption, the first adsorption bed 4 can be desorbed. At this time, the ambient air enters the system through the desorption fan 7, and then is heated into hot air by the waste heat exchanger 8. The heat source used by waste heat exchanger 8 is factory waste heat. The hot air coming out of the waste heat exchanger 8 enters the first adsorption bed 4, and at this time the second desorption ball valve 13 is opened, and the hot air desorbs harmful substances such as VOC adsorbed in the bed, desorbing harmful substances in the gas After being highly concentrated, the desorbed gas is passed into the recovery tank 9 for storage, and then the desorbed concentrated gas can be recycled or sent to a catalytic combustion device for complete digestion according to specific needs.

所述静电捕油装置2原理为：运用电晕放电，气体中油雾等微粒荷电后，在电场作用下，驱使带电油雾尘粒流向沉降电极并积在沉降电极上，当吸附于沉降电极上的杂质量增加到大于其附着力时，会自动向下流趟，从静电捕油装置2底部排出，净气体则从静电捕油装置2上部离开并进入下道工序，实现油雾的分离。The principle of the electrostatic oil trapping device 2 is: using corona discharge, after the particles such as oil mist in the gas are charged, under the action of an electric field, the charged oil mist and dust particles are driven to flow to the sinking electrode and accumulate on the sinking electrode. When the amount of impurities on the surface increases to greater than its adhesion, it will automatically flow down and be discharged from the bottom of the electrostatic oil trap 2, and the net gas will leave from the upper part of the electrostatic oil trap 2 and enter the next process to realize the separation of oil mist.

以上的仅为本发明的较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明申请专利范围所作的等效变化，仍属本发明的保护范围。The above are only preferred embodiments of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still belong to the protection scope of the present invention.

Claims (5)

1. a VOC waste gas purification recovery system, it is characterized in that, comprise absorption blower fan, electrostatic and catch oily device and activated carbon adsorption bed, the import that described electrostatic catches oily device is connected by the outlet of appendix with absorption blower fan, the outlet that electrostatic catches oily device is connected with the import of activated carbon adsorption bed by appendix, and the outlet of activated carbon adsorption bed is connected with the import of air exhauster by appendix.
2. VOC waste gas purification recovery system according to claim 1, it is characterized in that, described electrostatic is caught between oily device and activated carbon adsorption bed and is also provided with gas buffer tank, the outlet that the import of gas buffer tank catches oily device by appendix and electrostatic is connected, and the outlet of gas buffer tank is connected with the import of activated carbon adsorption bed by appendix.
3. VOC waste gas purification recovery system according to claim 1, it is characterized in that, described activated carbon adsorption bed comprises the first adsorbent bed and the second adsorbent bed, first adsorbent bed is in parallel with the second adsorbent bed, the outlet of gas buffer tank is connected with the import of the first adsorbent bed through the first absorption ball valve by appendix, the outlet of the first adsorbent bed is connected with air exhauster import by appendix, the outlet of gas buffer tank is connected with the import of the second adsorbent bed through the 3rd absorption ball valve by appendix, and the outlet of the second adsorbent bed is connected with the import of air exhauster by appendix.
4. VOC waste gas purification recovery system according to claim 3, it is characterized in that, purification-recovery system also comprises recycling can and desorption blower fan, the outlet of desorption blower fan is connected with recycling can through the first adsorbent bed connection by appendix, the second desorption ball valve is provided with between desorption blower fan and the first adsorbent bed, the outlet of desorption blower fan is connected with recycling can through the second adsorbent bed by appendix, is provided with the 4th desorption ball valve between desorption blower fan and the second adsorbent bed.
5. VOC waste gas purification recovery system according to claim 4, it is characterized in that, also comprise afterheat heat exchanger, the outlet of desorption blower fan is connected with the import of afterheat heat exchanger by appendix, the outlet of afterheat heat exchanger is connected with the first adsorbent bed through the second desorption ball valve by appendix, and the outlet of afterheat heat exchanger is connected with the second adsorbent bed through the 4th desorption ball valve by appendix.
CN201510785992.8A 2015-11-16 2015-11-16 VOC waste gas purification and recycle system Pending CN105381682A (en)

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Application publication date: 20160309