CN104958993A - Novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating - Google Patents
Novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating Download PDFInfo
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- CN104958993A CN104958993A CN201510347979.4A CN201510347979A CN104958993A CN 104958993 A CN104958993 A CN 104958993A CN 201510347979 A CN201510347979 A CN 201510347979A CN 104958993 A CN104958993 A CN 104958993A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 128
- 238000003795 desorption Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008929 regeneration Effects 0.000 title claims abstract description 16
- 238000011069 regeneration method Methods 0.000 title claims abstract description 16
- 238000010438 heat treatment Methods 0.000 title claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 title abstract description 6
- 230000008569 process Effects 0.000 title abstract description 5
- 238000001179 sorption measurement Methods 0.000 title abstract description 4
- 239000007789 gas Substances 0.000 claims abstract description 54
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 86
- 239000006096 absorbing agent Substances 0.000 claims description 61
- 229910052757 nitrogen Inorganic materials 0.000 claims description 43
- 238000010521 absorption reaction Methods 0.000 claims description 24
- 238000005516 engineering process Methods 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 3
- 230000001172 regenerating effect Effects 0.000 claims description 3
- 239000002912 waste gas Substances 0.000 abstract description 8
- 239000002351 wastewater Substances 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000010815 organic waste Substances 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 description 3
- 239000012855 volatile organic compound Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating. The process is simple and is reasonable in design, is designed for water-soluble organic waste gas and is also suitable for other types of organic waste gases; during waste gas treatment, by the combination of vapor indirect heating desorption and vacuum desorption, desorption regeneration of granular active carbon is achieved; different from the existing vapor indirect heating desorption, the process and the device have the advantages that vapor consumption is greatly lowered, the total energy consumption and cost are greatly lowered although power consumption is partly increased, the actual problem that the total economic operation cost is high is also solved, the device is simple, the waste gases can be treated and discharged standardly, high production of waste water is avoided, secondary pollution is avoided, and energy saving and environment protection are achieved.
Description
Technical field
The present invention relates to VOCs treatment, particularly the absorption of a kind of novel granular activated carbon and steam indirect vacuum desorption regeneration technology and device thereof.
Background technology
The technique of current seed activity carbon adsorption VOCs treatment is mostly: be first that organic exhaust gas is through pretreatment, pressure regulation, temperature adjustment; again through absorber absorption, steam direct heating desorption; the oil gas that desorption the goes out device that is condensed is condensed into liquefied mixture (or recovered oil) and is recovered; gas high altitude discharge clean after absorption, thus the object reaching reduction of discharging and qualified discharge.Be applied to a kind of method of desorption in this kind of technique, namely the direct heated particle active carbon of water vapour carries out desorption.Carry out in the process of desorption at the direct heated particle active carbon of this water vapour; the effect that granular activated carbon after desorption and regeneration adsorbs again is really fine; but when desorption; a large amount of water-soluble organic exhaust gas in water-soluble steam lime set, can become organic wastewater and is discharged, and the organic wastewater be discharged need import in wastewater treatment equipment and purifies; meaningless creates a large amount of costs; as device acquisition cost, treatment operating costs etc., defective workmanship is serious, and plant running is unreasonable.
Summary of the invention
For the problems referred to above; the present invention proposes the absorption of a kind of novel granular activated carbon and steam indirect vacuum desorption regeneration technology and device thereof; more can be conducive to granular activated carbon and absorption improvement is carried out to the waste gas containing organic component; reach reduction of discharging and qualified discharge; during waste gas particularly for treatment of water-soluble; a large amount of waste water can not be produced; secondary pollution can not be caused; significantly can reduce the consumption of steam simultaneously; reduce energy consumption, also solve the practical problem that economical operation totle drilling cost is high.
For solving above technical problem, technical scheme provided by the invention is:
A kind of novel granular activated carbon absorption and steam indirect vacuum desorption regenerating unit, it is characterized in that, comprise absorber and heat exchanger, described absorber comprises the outlet of exhaust gas inlet, fire-fighting nitrogen inlet, technique nitrogen inlet, desorption and clean gas, granular activated carbon is provided with in absorber, described heat exchanger is arranged in absorber, and realizes heat exchange with the granular activated carbon in absorber, and heat exchanger comprises steam inlet and condensation-water drain;
Described fire-fighting nitrogen inlet is communicated with technique nitrogen pipeline, described fire-fighting nitrogen pipeline is provided with the first valve, described exhaust gas inlet is communicated with exhaust piping, described exhaust piping is provided with the second valve, described technique nitrogen inlet is communicated with technique nitrogen pipeline, described technique nitrogen pipeline is provided with the 3rd valve, described clean gas outlet clean gas pipeline, described clean gas pipeline is provided with the 4th valve, described desorption is communicated with desorption pipeline, described desorption pipeline is located at successively the 5th valve, vavuum pump and condenser, described condenser is communicated with and adsorbs pipeline and recovery channel again, described recovery channel connects recycling can,
Described steam inlet is communicated with jet chimney, and described jet chimney is provided with the 6th valve, and described condensate outlet is communicated with condensate liquid pipeline, and described condensate liquid pipeline is provided with the 7th valve.
Based on a kind of novel granular activated carbon absorption and the steam indirect vacuum desorption regeneration technology of said apparatus, it is characterized in that, first, by organic exhaust gas through pressure regulation, pretreatment, temperature adjustment, the solid particle of filtering in it, and by the pressure controlling of organic exhaust gas to 5 ~ 9kpa, temperature adjusting is to 15 ~ 55 DEG C, secondly, adsorb through absorber again, until the granular activated carbon in absorber reaches capacity, subsequently, vacuum decompression desorption and steam indirect desorption are carried out simultaneously to the saturated granular activated carbon of absorption, concrete operations are as follows: (1) is opened vavuum pump and vacuumized absorber, after absorber vacuum reaches (-0.08) ~ (-0.1) Mpa, open the 3rd valve injection technology nitrogen at the uniform velocity in absorber, (2) the 6th valve is opened after spending 10-15 minute, to the granular activated carbon bed indirect in absorber, (3) after the temperature of granular activated carbon reaches setting value A, close the 6th valve, stop heating granular activated carbon bed, (4) the 6th valve is again opened, to the granular activated carbon bed indirect in absorber after spending 15-20 minute, (5) after the temperature of granular activated carbon reaches setting value B, close the 6th valve, stop heating granular activated carbon bed, (6) vacuum pump evacuation is stopped after spending 22-25 minute, (7) when the vacuum of absorber becomes 0, nitrogen valve is closed, finally, the recovered oil be out condensed by desorption reclaims, and the gas be not condensed is waited until and again adsorbed.
Above-mentioned a kind of novel granular activated carbon absorption and steam indirect vacuum desorption regeneration technology, wherein, when desorption, setting value A is positioned at the temperature range of 60 ~ 80 DEG C, and setting value B is positioned at the temperature range of 100 ~ 130 DEG C.
Beneficial effect of the present invention is:
A kind of novel granular activated carbon absorption that the present invention proposes and steam indirect vacuum desorption regeneration technology and device thereof, its technique is simple, reasonable in design, design for water miscible organic exhaust gas, also the organic exhaust gas of other types is applicable to, when carrying out waste gas pollution control and treatment, the mode that the present invention adopts steam indirect desorption and vacuum desorption to combine, realize the desorption and regeneration of granular activated carbon, different and existing steam direct heating desorption, the consumption of steam of the present invention also significantly reduces, although power consumption increases to some extent, but technique and the total energy consumption of device and cost but reduce more, also the practical problem that economical operation totle drilling cost is high is solved, device is simple, qualified discharge after waste gas pollution control and treatment can be met, produce without a large amount of waste water simultaneously, stop secondary pollution, reach the object of energy-conserving and environment-protective.
Accompanying drawing explanation
The current VOCs treatment schematic diagram of Fig. 1.
Fig. 2 schematic diagram of the present invention.
Detailed description of the invention
A kind of novel granular activated carbon absorption as shown in the figure and steam indirect vacuum desorption regenerating unit, it is characterized in that, comprise absorber 11 and heat exchanger 12, described absorber 11 comprises exhaust gas inlet 21, fire-fighting nitrogen inlet 22, technique nitrogen inlet 23, desorption 24 and clean gas outlet 25, granular activated carbon 111 is provided with in absorber 11, described heat exchanger 12 is arranged in absorber 11, and realizing heat exchange with the granular activated carbon 111 in absorber 11, heat exchanger 12 comprises steam inlet 26 and condensation-water drain 27;
Described fire-fighting nitrogen inlet 22 is communicated with technique nitrogen pipeline 32, described fire-fighting nitrogen pipeline 32 is provided with the first valve 42, fire-fighting nitrogen enters absorber 11 from technique nitrogen pipeline 32 and fire-fighting nitrogen inlet 22 and in the pipeline that is connected with absorber 11, its internal gas is replaced, when preventing adsorption and desorption, ignite or ignite organic exhaust gas;
Described exhaust gas inlet 21 is communicated with exhaust piping 31, described exhaust piping 31 is provided with the second valve 41, described clean gas outlet 25 is communicated with clean gas pipeline 35, described clean gas pipeline 35 is provided with the 4th valve 45, organic exhaust gas enters in absorber 11 from exhaust piping 32 and exhaust gas inlet 21, and adsorbed by granular activated carbon 111, discharged by clean gas outlet 25 and clean gas pipeline 35 by the gas that absorption is clean simultaneously;
Described technique nitrogen inlet 23 is communicated with technique nitrogen pipeline 33, described technique nitrogen pipeline 33 is provided with the 3rd valve 43, described desorption 24 is communicated with desorption pipeline 34, described desorption pipeline 34 is located at successively the 5th valve 44, vavuum pump 13 and condenser 14, described condenser 14 is communicated with and adsorbs pipeline 28 and recovery channel 29 again, described recovery channel 29 connects recycling can 15, vavuum pump 13 continues to vacuumize absorber 11, vacuum desorption is carried out to granular activated carbon 111, the slow injection in absorber 11 at the uniform velocity of technique nitrogen, coordinate vavuum pump 13, provide certain gas motion, by in the gas molecule suction condenser 14 of organic exhaust gas that gone out by desorption, condensation goes out can for the recovered oil reclaimed, the organic exhaust gas of the non-condensing of part waits until absorption next time simultaneously,
Described steam inlet 26 is communicated with jet chimney 36; described jet chimney 36 is provided with the 6th valve 46; described condensate outlet 27 is communicated with condensate liquid pipeline 37; described condensate liquid pipeline 37 is provided with the 7th valve 47; while vacuum desorption; steam interval enter from jet chimney 36 and steam inlet 26 heat exchanger 12 being positioned at absorber 11, interval granular activated carbon 111 is heated, the self cooling condensate outlet 27 of the condensed water produced after steam heat-exchanging and condensate liquid pipeline 37 are discharged.
Technique nitrogen and fire-fighting nitrogen are nitrogen, and acting as of technique nitrogen provides gas to flow when vacuumizing, and the gas act as in displacement apparatus of fire-fighting nitrogen prevents organic exhaust gas from being ignited or igniting.
Embodiment one:
Based on a kind of novel granular activated carbon absorption and the steam indirect vacuum desorption regeneration technology of said apparatus, it is characterized in that, first, by organic exhaust gas through pressure regulation, pretreatment, temperature adjustment, the solid particle of filtering in it, and by the pressure controlling of organic exhaust gas to 9kpa, temperature adjusting is to 45 DEG C, secondly, adsorb through absorber again, until the granular activated carbon in absorber reaches capacity, subsequently, vacuum decompression desorption and steam indirect desorption are carried out simultaneously to the saturated granular activated carbon of absorption, concrete operations are as follows: (1) is opened vavuum pump and vacuumized absorber, after absorber vacuum reaches-0.1Mpa, open the 3rd valve injection technology nitrogen at the uniform velocity in absorber, (2) the 6th valve is opened after spending 10 minutes, to the granular activated carbon bed indirect in absorber, (3) after the temperature of granular activated carbon reaches 80 DEG C, close the 6th valve, stop heating granular activated carbon bed, (4) the 6th valve is again opened, to the granular activated carbon bed indirect in absorber after spending 15 minutes, (5) after the temperature of granular activated carbon reaches 120 DEG C, close the 6th valve, stop heating granular activated carbon bed, (6) vacuum pump evacuation is stopped after spending 25 minutes, (7) when the vacuum of absorber becomes 0, nitrogen valve is closed.Finally, the recovered oil be out condensed by desorption reclaims, and the gas be not condensed is waited until and again adsorbed.
Embodiment two:
Based on a kind of novel granular activated carbon absorption and the steam indirect vacuum desorption regeneration technology of said apparatus, it is characterized in that, first, by organic exhaust gas through pressure regulation, pretreatment, temperature adjustment, the solid particle of filtering in it, and by the pressure controlling of organic exhaust gas to 9kpa, temperature adjusting is to 55 DEG C, secondly, adsorb through absorber again, until the granular activated carbon in absorber reaches capacity, subsequently, vacuum decompression desorption and steam indirect desorption are carried out simultaneously to the saturated granular activated carbon of absorption, concrete operations are as follows: (1) is opened vavuum pump and vacuumized absorber, after absorber vacuum reaches-0.09Mpa, open the 3rd valve injection technology nitrogen at the uniform velocity in absorber, (2) the 6th valve is opened after spending 13 minutes, to the granular activated carbon bed indirect in absorber, (3) after the temperature of granular activated carbon reaches 70 DEG C, close the 6th valve, stop heating granular activated carbon bed, (4) the 6th valve is again opened, to the granular activated carbon bed indirect in absorber after spending 17 minutes, (5) after the temperature of granular activated carbon reaches 128 DEG C, close the 6th valve, stop heating granular activated carbon bed, (6) vacuum pump evacuation is stopped after spending 24 minutes, (7) when the vacuum of absorber becomes 0, nitrogen valve is closed.Finally, the recovered oil be out condensed by desorption reclaims, and the gas be not condensed is waited until and again adsorbed.
A kind of novel granular activated carbon absorption that the present invention proposes and steam indirect vacuum desorption regeneration technology and device thereof, its technique is simple, reasonable in design, design for water miscible organic exhaust gas, also the organic exhaust gas of other types is applicable to, when carrying out waste gas pollution control and treatment, the present invention can not produce a large amount of waste water containing organic solvent, secondary pollution can not be caused, significantly can reduce the consumption of steam simultaneously, although power consumption increases to some extent, but the energy consumption that device is total and cost but reduce more, also the practical problem that economical operation totle drilling cost is high is solved, and device is simple, qualified discharge after waste gas pollution control and treatment can be met.
Part processing equipment of the present invention and parameter have special requirement: 1, absorber, condenser and corresponding connecting pipe can bear the pressure of-0.3Mpa.2, adopt vacuum decompression desorption and steam indirect to carry out desorption to the granular activated carbon that absorption is saturated simultaneously.3, after absorber vacuum reaches setting value, the 3rd valve injection technology nitrogen at the uniform velocity in absorber is opened.4, traffic requirement is had to the technique nitrogen be injected in absorber.5, temperature requirement is had to the granular activated carbon indirect in absorber.6, be when free requirement to the granular activated carbon indirect in absorber.7, the vacuum vacuumized absorber is not a definite value, can adjust according to by the character of adsorb organic compound.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (3)
1. a novel granular activated carbon absorption and steam indirect vacuum desorption regenerating unit, it is characterized in that, comprise absorber and heat exchanger, described absorber comprises exhaust gas inlet, fire-fighting nitrogen inlet, technique nitrogen inlet, desorption and clean gas outlet, granular activated carbon is provided with in absorber, described heat exchanger is arranged in absorber, and realize heat exchange with the granular activated carbon in absorber, heat exchanger comprises steam inlet and condensation-water drain, described fire-fighting nitrogen inlet is communicated with technique nitrogen pipeline, described fire-fighting nitrogen pipeline is provided with the first valve, described exhaust gas inlet is communicated with exhaust piping, described exhaust piping is provided with the second valve, described technique nitrogen inlet is communicated with technique nitrogen pipeline, described technique nitrogen pipeline is provided with the 3rd valve, described clean gas outlet clean gas pipeline, described clean gas pipeline is provided with the 4th valve, described desorption is communicated with desorption pipeline, described desorption pipeline is located at successively the 5th valve, vavuum pump and condenser, described condenser is communicated with and adsorbs pipeline and recovery channel again, described recovery channel connects recycling can, described steam inlet is communicated with jet chimney, described jet chimney is provided with the 6th valve, described condensate outlet is communicated with condensate liquid pipeline, described condensate liquid pipeline is provided with the 7th valve.
2. a novel granular activated carbon absorption and steam indirect vacuum desorption regeneration technology, it is characterized in that, first, by organic exhaust gas through pressure regulation, pretreatment, temperature adjustment, the solid particle of filtering in it, and by the pressure controlling of organic exhaust gas to 5 ~ 9kpa, temperature adjusting is to 15 ~ 55 DEG C, secondly, adsorb through absorber again, until the granular activated carbon in absorber reaches capacity, subsequently, vacuum decompression desorption and steam indirect desorption are carried out simultaneously to the saturated granular activated carbon of absorption, concrete operations are as follows: (1) is opened vavuum pump and vacuumized absorber, after absorber vacuum reaches (-0.08) ~ (-0.1) Mpa, open the 3rd valve injection technology nitrogen at the uniform velocity in absorber, (2) the 6th valve is opened after spending 10-15 minute, to the granular activated carbon bed indirect in absorber, (3) after the temperature of granular activated carbon reaches setting value A, close the 6th valve, stop heating granular activated carbon bed, (4) the 6th valve is again opened, to the granular activated carbon bed indirect in absorber after spending 15-20 minute, (5) after the temperature of granular activated carbon reaches setting value B, close the 6th valve, stop heating granular activated carbon bed, (6) vacuum pump evacuation is stopped after spending 22-25 minute, (7) when the vacuum of absorber becomes 0, nitrogen valve is closed, finally, the recovered oil be out condensed by desorption reclaims, and the gas be not condensed is waited until and again adsorbed.
3. a kind of novel granular activated carbon absorption as claimed in claim 2 and steam indirect vacuum desorption regeneration technology; it is characterized in that; when desorption, described setting value A is positioned at the temperature range of (60 ~ 80) DEG C, the temperature range that setting value B is positioned at (100 ~ 130) DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510347979.4A CN104958993A (en) | 2015-06-23 | 2015-06-23 | Novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating |
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| CN201510347979.4A CN104958993A (en) | 2015-06-23 | 2015-06-23 | Novel desorption regeneration process and device using granular active carbon adsorption and vapor indirect heating |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107715648A (en) * | 2017-10-19 | 2018-02-23 | 泉州市天龙环境工程有限公司 | A kind of recovery system and its recovery process of toluene waste gas steam desorption |
| CN107837645A (en) * | 2017-11-24 | 2018-03-27 | 长兴华阁耐物流装备有限公司 | A kind of gas separation adsorption plant of multiple filtration |
| CN107970904A (en) * | 2018-01-26 | 2018-05-01 | 索红卫 | A kind of regenerating active carbon system and application method |
| CN109603412A (en) * | 2018-11-30 | 2019-04-12 | 北京高能时代环境技术股份有限公司 | Contaminated soil thermal desorption organic tail gas handles integrated system and processing method |
| CN112569916A (en) * | 2020-11-13 | 2021-03-30 | 长沙工研院环保有限公司 | Method for regenerating waste active carbon |
| CN112717905A (en) * | 2020-12-29 | 2021-04-30 | 无锡四方集团有限公司 | Honeycomb charcoal desorption device in vacuum heating furnace |
| CN114669285A (en) * | 2022-04-26 | 2022-06-28 | 无锡市赢江环保科技有限公司 | Saturated active carbon high temperature anaerobic desorption regeneration system |
| CN115634677A (en) * | 2022-12-05 | 2023-01-24 | 佛山市大随环保科技有限公司 | Activated carbon desorption method and activated carbon desorption equipment |
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| CN107715648A (en) * | 2017-10-19 | 2018-02-23 | 泉州市天龙环境工程有限公司 | A kind of recovery system and its recovery process of toluene waste gas steam desorption |
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| CN114669285A (en) * | 2022-04-26 | 2022-06-28 | 无锡市赢江环保科技有限公司 | Saturated active carbon high temperature anaerobic desorption regeneration system |
| CN115634677A (en) * | 2022-12-05 | 2023-01-24 | 佛山市大随环保科技有限公司 | Activated carbon desorption method and activated carbon desorption equipment |
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Application publication date: 20151007 |
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