CN105381682A - VOC waste gas purification and recycle system - Google Patents
VOC waste gas purification and recycle system Download PDFInfo
- 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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- adsorbent bed
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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
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- 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
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- 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
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- 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
Technical field
The present invention relates to technical field of waste gas treatment in industrial production, be specifically related to a kind of VOC waste gas purification recovery system.
Background technology
Existing tar production factory can produce the exhaust after washing benzene and each storage tank tidal air aborning, this type of waste gas contains toluene, dimethylbenzene, phenol, naphthalene etc., for containing VOC (volatile organic matter) waste gas, if without process directly outer row, harm will be produced to environment and human body, and violate national environmental protection regulation.The method of current elimination waste gas containing VOC mainly contains the methods such as chemical absorbing, absorption, catalytic oxidation.Chemical absorption method faces the problem selecting suitable lyosoption, and organic exhaust gas is water-soluble poor; The tolerance of catalytic oxidation is too large, uneconomical economically; Absorption method is most widely used, but owing to also containing the materials such as tar in the waste gas of tar production factory discharge, easily blocks adsorbent during absorption, therefore traditional absorption method has limitation when the gas treatment for containing tar.
Summary of the invention
The technical problem to be solved in the present invention is, in view of the foregoing defects the prior art has, a kind of VOC waste gas purification recovery system, makes it to carry out high-efficient purification to the VOC waste gas containing tar, reduce the replacement cycle of adsorbent.
The present invention for solving the problems of the technologies described above adopted technical scheme is:
A kind of VOC waste gas purification recovery system, 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.
Connect technique scheme, 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.
Connect technique scheme, 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 through the second absorption ball valve 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 through the 4th absorption ball valve by appendix.
Connect technique scheme, 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 first desorption ball valve is provided with between first adsorbent bed and recycling can, the outlet of desorption blower fan is connected with recycling can through the second adsorbent bed by appendix, be provided with the 4th desorption ball valve between desorption blower fan and the second adsorbent bed, between the second adsorbent bed and recycling can, be provided with the 3rd desorption ball valve.
Connect technique scheme, 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.
The present invention has following beneficial effect:
1. adopt electrostatic catch oily device removing waste gas in mist of oil and impurity, make it not block activated carbon adsorption bed, described activated carbon adsorption bed adopts active carbon as adsorbent, be mainly used in adsorbing the harmful components in organic exhaust gas, the clean gas of catching after oil and absorption through electrostatic is discharged by air exhauster, make it to carry out high-efficient purification to the VOC waste gas containing tar, reduce the replacement cycle of adsorbent.
2. activated carbon adsorption bed described in adopts two adsorbent bed; two adsorbent beds carry out alternating sorbent, wherein the absorption of adsorbent bed saturated after be switched to desorption manipulation, another starts to carry out adsorption operations simultaneously; raise the efficiency, production line stop will be cleared up because of clearing up adsorbent bed.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of VOC waste gas purification recovery system in the embodiment of the present invention;
In figure, 1-adsorbs blower fan, and 2-electrostatic catches oily device, 3-gas buffer tank, 4-first adsorbent bed, 5-second adsorbent bed, 6-air exhauster, 7-desorption blower fan, 8-afterheat heat exchanger, 9-recycling can, 10-first adsorbs ball valve, and 11-second adsorbs ball valve, 12-first desorption ball valve, 13-second desorption ball valve, 14-the 3rd adsorbs ball valve, 15-the 4th adsorbs ball valve, 16-the 3rd desorption ball valve, 17-the 4th desorption ball valve.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in detail.
With reference to shown in Fig. 1, VOC waste gas purification recovery system in an embodiment provided by the invention, comprise absorption blower fan 1, electrostatic and catch oily device 2 and activated carbon adsorption bed, the import that described electrostatic catches oily device 2 is connected by the outlet of appendix with absorption blower fan 1, the outlet that electrostatic catches oily device 2 is connected with the import of activated carbon adsorption bed by appendix, and the outlet of activated carbon adsorption bed is connected by the import of appendix with air exhauster 6; Adopt electrostatic to catch oily device 2 and remove mist of oil in waste gas and impurity, make it not block activated carbon adsorption bed, described activated carbon adsorption bed adopts active carbon as adsorbent, is mainly used in adsorbing the harmful components in organic exhaust gas, and the clean gas of catching after oil and absorption through electrostatic is discharged by air exhauster 6.
Further, described electrostatic is caught between oily device 2 and activated carbon adsorption bed and is also provided with gas buffer tank 3, the outlet that the import of gas buffer tank 3 catches oily device 2 by appendix and electrostatic is connected, and the outlet of gas buffer tank 3 is connected with the import of activated carbon adsorption bed by appendix;
Further, described activated carbon adsorption bed comprises the first adsorbent bed 4 and the second adsorbent bed 5, first adsorbent bed 4 is in parallel with the second adsorbent bed 5, the outlet of gas buffer tank 3 is connected with the import of the first adsorbent bed 4 through the first absorption ball valve 10 by appendix, the outlet of the first adsorbent bed 4 is connected with air exhauster 6 import through the second absorption ball valve 11 by appendix, the outlet of gas buffer tank 3 is connected with the import of the second adsorbent bed 5 through the 3rd absorption ball valve 14 by appendix, the outlet of the second adsorbent bed 5 is connected with the import of air exhauster 6 through the 4th absorption ball valve 15 by appendix, described activated carbon adsorption bed adopts two adsorbent bed, and two adsorbent beds carry out alternating sorbent, wherein an adsorbent bed absorption saturated after be switched to desorption manipulation, another starts to carry out adsorption operations simultaneously.
Further, purification-recovery system also comprises recycling can 9 and desorption blower fan 7, the outlet of desorption blower fan 7 is connected with recycling can 9 through the first adsorbent bed 4 connection by appendix, the second desorption ball valve 13 is provided with between desorption blower fan 7 and the first adsorbent bed 4, the first desorption ball valve 12 is provided with between first adsorbent bed 4 and recycling can 9, the outlet of desorption blower fan 7 is connected with recycling can 9 through the second adsorbent bed 5 by appendix, be provided with between desorption blower fan 7 and the second adsorbent bed 5 between the 4th desorption ball valve 17, second adsorbent bed 5 and recycling can 9 and be provided with the 3rd desorption ball valve 16; Blow hot-air by desorption blower fan 7 during desorption and enter saturated adsorbent bed, make its desorption and regeneration, the concentrated gas after desorption enters recycling can 9 and collects.
Further, also comprise afterheat heat exchanger 8, the outlet of desorption blower fan 7 is connected by the import of appendix with afterheat heat exchanger 8, the outlet of afterheat heat exchanger 8 is connected with the first adsorbent bed 4 through the second desorption ball valve 13 by appendix, and the outlet of afterheat heat exchanger 8 is connected with the second adsorbent bed 5 through the 4th desorption ball valve 17 by appendix; Desorption hot-air used utilizes factory's used heat, has saved energy.
In one embodiment of the present of invention, operation principle of the present invention:
Adsorption operations: coke-oven plant's waste gas containing VOC enters exhaust treatment system by absorption blower fan 1, first waste gas caught oily device 2 through electrostatic and carried out pretreatment, the impurity such as the tar in removing waste gas and dust, then gas buffer tank 3 is entered, all press wherein, gas all after pressure enters the first adsorbent bed 4, now the first absorption ball valve 10 is opened, the harmful substances such as the VOC in waste gas are adsorbed by the active carbon in the first adsorbent bed 4, and the Purge gas after absorption enters air by air exhauster 6; When the first adsorbent bed 4 absorption reaches capacity, then close the first absorption ball valve 10, open the 3rd absorption ball valve 14, make waste gas enter sorption channel through the second adsorbent bed 5.
Desorption manipulation: when the second adsorbent bed 5 adsorbs, can carry out desorption to the first adsorbent bed 4, now surrounding air be entered system by desorption blower fan 7, be then heated into hot-air through afterheat heat exchanger 8, and afterheat heat exchanger 8 thermal source used is factory's used heat.The first adsorbent bed 4 is entered from afterheat heat exchanger 8 hot-air out, now the second desorption ball valve 13 is opened, the harmful substances such as the VOC adsorbed in bed are carried out desorption by hot-air, harmful substance in desorption gas is by high enrichment, then desorption gas is passed into recycling can 9 to store, then can the concentrated gas of desorption be carried out recycle or concentrated gas is delivered to catalytic combustion system according to specific needs clearing up completely.
Described electrostatic catches oily device 2 principle: use corona discharge, after the particulates such as Oil in circulating gas mist are charged, under electric field action, order about charged mist of oil grit flow to agglomerator and amass on agglomerator, when be adsorbed in the impurity level on agglomerator be increased to be greater than its adhesive force time, automatically to dirty time, can catch bottom oily device 2 from electrostatic and discharge, pure qi (oxygen) body is then caught oily device 2 top from electrostatic and is left and enter next procedure, realizes the separation of mist of oil.
Above is only preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalence change that the present patent application the scope of the claims is done, still belongs to 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785992.8A CN105381682A (en) | 2015-11-16 | 2015-11-16 | VOC waste gas purification and recycle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510785992.8A CN105381682A (en) | 2015-11-16 | 2015-11-16 | VOC waste gas purification and recycle system |
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| CN105381682A true CN105381682A (en) | 2016-03-09 |
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| CN201510785992.8A Pending CN105381682A (en) | 2015-11-16 | 2015-11-16 | VOC waste gas purification and recycle system |
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Cited By (4)
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| CN106311572A (en) * | 2016-08-23 | 2017-01-11 | 武汉东晟捷能科技有限公司 | System and method for treating coating exhaust and coating equipment provided with system |
| TWI594803B (en) * | 2016-07-22 | 2017-08-11 | Jg Environmental Technology Co Ltd | Gas circulation system and gas circulation method applied in drying room of coating operation |
| CN110787589A (en) * | 2019-12-13 | 2020-02-14 | 广东佳德环保科技有限公司 | VOC organic waste gas adsorption and desorption treatment system and treatment method |
| CN113975932A (en) * | 2021-11-09 | 2022-01-28 | 上海冰戈环保科技有限公司 | Device for removing indoor volatile organic compounds and operation method thereof |
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Cited By (4)
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| CN106311572A (en) * | 2016-08-23 | 2017-01-11 | 武汉东晟捷能科技有限公司 | System and method for treating coating exhaust and coating equipment provided with system |
| CN110787589A (en) * | 2019-12-13 | 2020-02-14 | 广东佳德环保科技有限公司 | VOC organic waste gas adsorption and desorption treatment system and treatment method |
| CN113975932A (en) * | 2021-11-09 | 2022-01-28 | 上海冰戈环保科技有限公司 | Device for removing indoor volatile organic compounds and operation method thereof |
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Application publication date: 20160309 |