CN105233625A - Fluidized bed type organic exhaust purification method and device - Google Patents
Fluidized bed type organic exhaust purification method and device Download PDFInfo
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- CN105233625A CN105233625A CN201510695704.XA CN201510695704A CN105233625A CN 105233625 A CN105233625 A CN 105233625A CN 201510695704 A CN201510695704 A CN 201510695704A CN 105233625 A CN105233625 A CN 105233625A
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Abstract
The invention discloses a fluidized bed type organic exhaust purification method and device to solve the problems of the existing organic exhaust purification technology that processes are complicated, cost is high and efficiency is low. The method comprises the steps of adsorption and desorption. The device comprises an adsorption chamber and a desorption chamber, wherein an exhaust inlet is formed in one side of the adsorption chamber, a purified tail gas outlet is formed in the other side of the adsorption chamber, an adsorption medium moving downwards is arranged in the adsorption chamber, the desorption chamber is located below the adsorption chamber, the adsorption medium falls into the desorption chamber from the adsorption chamber, a carrier gas inlet is formed in one side of the desorption chamber, a carrier gas is formed in the other side of the desorption chamber, and a desorption device is arranged in the desorption chamber. According to the fluidized bed type organic exhaust purification method and device, technology and structure are simple, operation is convenient, exhaust purification cost can be effectively reduced, and exhaust purification efficiency can be improved.
Description
Technical field
The present invention relates to organic waste-gas purification technical field, refer to a kind of fluidized bed type organic waste-gas purification method and device especially.
Background technology
Along with Organic chemical products extensive use in the industry, the volatile organic contaminant entered in air gets more and more, mainly low boiling, volatile organic matter.They are mainly derived from the waste gas that petroleum chemical industry discharges, the organic solvent that all conglomeraties such as flexible packaging printing, agricultural chemicals, medicine intermediate, vehicle spray painting, electronics, machinery, shoemaking, synthetic leather, synthetic fibers, plastics, papermaking, paint, coating, pottery, mining and weaving are discharged, this not only endangers the healthy of shop worker and the around people, cause the pollution of atmospheric environment, and cause loss and the waste of resource.Volatile organic matter forms the precursor of Pm2.5, and along with the frequent generation of current haze hazard weather, scarcity of resources, economic competition are day by day fierce, it is imperative that the cleaner production of volatile organic waste gas pollution control and relevant industries is implemented.
The microporous materials such as active carbon, molecular sieve, NACF are generally adopted to carry out adsorption treatment to the process of volatile organic waste gas at present, again by high-temperature vapour to absorption saturated after microporous materials carry out organic solvent desorption, and the mixture of the organic matter adopting cooling water to get off to desorption and steam carries out condensation, thus reclaim organic solvent.But this technique adsorption process needs to fill the adsorbing mediums such as large carbon content active, will consume water vapour and cooling water in a large number during desorption, and a large amount of heats slatterns in condensation process, simultaneously after solvent is separated with water, also can produce a large amount of waste water, need after a large amount of adsorbing medium inactivations to change, need to process further, whole complex technical process, process unit investment is large, easy generation secondary pollution, and energy waste, operation energy consumption is high.Meanwhile, increasingly serious due to atmospheric environment, the high pollution that boiler produces makes country carry out strict management and control for boiler construction equally, and a large amount of steam demands also becomes the restriction that existing purification of volatile organic waste gas technical matters is promoted.
Summary of the invention
First the present invention proposes a kind of fluidized bed type organic waste-gas purification method, it is a kind of purification method of pure physical process, be mainly used in industrial enterprise's organic waste-gas purification, solve cleaning organic waste gas complex technical process in prior art, high, the inefficient problem of cost.
Technical scheme of the present invention is achieved in that fluidized bed type organic waste-gas purification method, comprises following sequential steps:
1) adsorb, by waste gas in the horizontal direction by adsorption chamber, organic exhaust gas adsorb by the adsorbing medium that moves from top to bottom in adsorption chamber;
2) desorption, the adsorbing medium with organic exhaust gas drops down onto in desorption chamber and carries out desorption, and the organic exhaust gas that desorption gets off is taken desorption chamber out of by carrier gas and processed.
As the improvement to above-mentioned purification method, in step 2) after, the adsorbing medium after desorption is transported back again to adsorption chamber, repeat step 1), 2).
The beneficial effect of above-mentioned fluidized bed type organic waste-gas purification method is adopted to be: adsorbing medium moves in adsorption chamber from top to bottom, and waste gas enters in adsorption chamber in a horizontal manner, vertically meet between the two, the organic exhaust gas contained in waste gas can absorb by adsorbing medium, remaining cleaning of off-gas can direct qualified discharge; Adsorbing medium containing organic exhaust gas continues to fall in desorption chamber and realizes desorption, and the organic exhaust gas that desorption gets off is taken out of by carrier gas, enters combustion chamber or condensation chamber carries out processing.In whole method, waste gas and adsorbing medium are all be in flow regime, and adsorption efficiency is higher, and adsorption and desorption synchronously carries out, and adsorbing medium remains good adsorption activity, ensure that the purification efficiency of waste gas.
In step 2) after, adsorbing medium after desorption is transported back again to adsorption chamber, repeat step 1), 2), adsorbing medium can be made so uninterruptedly to circulate between adsorption and desorption, substantially increase the utilization ratio of adsorbing medium, only just reach the same effect of conventional method with little filling consumption, while saving resource, it also avoid the secondary solid waste pollution that conventional method causes.
The invention allows for a kind of fluidized bed type cleaning equipment for waste organic gas, solve cleaning organic waste gas apparatus structure complexity, high, the inefficient problem of cost in prior art.
Technical scheme of the present invention is achieved in that fluidized bed type cleaning equipment for waste organic gas, comprises
Adsorption chamber, the side of described adsorption chamber is provided with exhaust gas inlet, and opposite side is provided with cleaning of off-gas outlet, is provided with the adsorbing medium moved in described adsorption chamber from top to bottom;
Desorption chamber, described desorption chamber is positioned at below described adsorption chamber, and described adsorbing medium falls in described desorption chamber by described adsorption chamber, and the side of described desorption chamber is provided with carrier gas inlet, and opposite side is provided with carrier gas outlet, is also provided with desorption apparatus in described desorption chamber.
As the improvement to technique scheme, also comprise the hopper for holding described adsorbing medium, the lower ending opening of described hopper is positioned at described adsorption chamber.
As the further improvement to technique scheme, the lower ending opening place of described hopper is provided with the valve for controlling described adsorbing medium flow velocity.
As the further improvement to technique scheme, the bottom surface opening of described desorption chamber, the below of described opening is provided with conveyer belt, adsorbing medium in described desorption chamber falls on described conveyer belt from described opening after desorption, described conveyer belt extends to described hopper, for being promoted in described hopper by the adsorbing medium after desorption.
As one preferred embodiment, described desorption apparatus is heater.
As another preferred embodiment, described carrier gas is air or inert gas or nitrogen.
As another preferred embodiment, described adsorbing medium is any one or its mixture in zeolite, molecular sieve, active carbon, activated alumina.
The beneficial effect of above-mentioned fluidized bed type cleaning equipment for waste organic gas is adopted to be: waste gas enters in adsorption chamber in the horizontal direction from exhaust gas inlet, the adsorbing medium moved is run into from top to bottom in adsorption chamber, fully contact between the two, the organic exhaust gas contained in waste gas absorb by adsorbing medium and continue fall, remaining cleaning of off-gas exports direct qualified discharge by cleaning of off-gas; And fall to after in desorption chamber with the adsorbing medium of organic exhaust gas, in desorption chamber desorption apparatus effect under realize desorption, the organic exhaust gas that desorption gets off is taken out of by carrier gas, enters combustion chamber or condensation chamber carries out two stage treatment.The structure of whole device is simple, and easy to use, adsorption and desorption can synchronously carry out.From flow media aspect, because adsorbing medium is flowing, adsorption and desorption carries out in the fluidisation section that reactor is different simultaneously; For the gas componant of complexity, can sieve according to molecular size, adopt different apertures to carry out layered adsorption; Reduce the requirement of the cleanliness factor (dehumidifying, dedusting etc.) to initial gas simultaneously, substantially increase the adaptability of product.From regeneration aspect, compare with traditional mode, this device changing distance, unification are regenerated as instantaneity, dispersion regeneration, make resolution gas flow little, balanced, steady.From desorption tolerance aspect, the relevance of desorption tolerance with initial exhaust gas amount is separated, desorption tolerance is only relevant with load volume with adsorbance (product of concentration and tolerance), traditional method is relevant with desorption time with initial tolerance, such benefit is that desorption tolerance becomes very little, rear class corollary equipment is significantly reduced, reduces investment cost and the operating cost of whole system.
Be stored in by adsorbing medium in a hopper, the lower ending opening of this hopper is also positioned at adsorption chamber, and the adsorbing medium in adsorption chamber can be made to fall continuously, and guarantee waste gas fully contacts with adsorbing medium.
Valve is set at the lower ending opening place of hopper, the caliber of hopper lower ending opening can be controlled according to the concentration of waste gas and flow velocity, and then control the speed of adsorbing medium whereabouts, with the corresponding waste gas of adaptation, realize fully adsorbing.
Below the bottom surface opening of desorption chamber, conveyer belt is set, this conveyer belt directly extends to hopper, adsorbing medium after desorption can be promoted in hopper to store again and recycle, substantially increase the service efficiency of adsorbing medium, reduce the operating cost of package unit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of an embodiment of the present invention;
In figure: 1-adsorption chamber; 2-exhaust gas inlet; 3-cleaning of off-gas exports; 4-desorption chamber; 5-adsorbing medium; 6-carrier gas inlet; 7-carrier gas exports; 8-hopper; 9-conveyer belt.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment:
The present invention proposes a kind of fluidized bed type organic waste-gas purification method, propose a kind of fluidized bed type cleaning equipment for waste organic gas simultaneously, the method and device can realize synchronous adsorption and desorption when processing organic exhaust gas, and technique, structure are simple, substantially reduce the cost of waste gas purification, improve the efficiency of waste gas purification.
The fluidized bed type organic waste-gas purification method of this embodiment comprises the steps:
1) adsorb, by waste gas in the horizontal direction by adsorption chamber, organic exhaust gas adsorb by the adsorbing medium that moves from top to bottom in adsorption chamber;
2) desorption, the adsorbing medium with organic exhaust gas drops down onto in desorption chamber and carries out desorption, and the organic exhaust gas that desorption gets off is taken desorption chamber out of by carrier gas and processed.
In above-mentioned steps 2) after, the adsorbing medium after desorption also can be transported back to adsorption chamber by this embodiment again, repeat step 1), 2).
The general principle of this fluidized bed type organic waste-gas purification method is: adsorbing medium moves from top to bottom in adsorption chamber, and waste gas enters in adsorption chamber in a horizontal manner, vertically meet between the two, the organic exhaust gas contained in waste gas can absorb by adsorbing medium, remaining cleaning of off-gas can direct qualified discharge; Adsorbing medium containing organic exhaust gas continues to fall in desorption chamber and realizes desorption, the organic exhaust gas that desorption gets off is taken out of by carrier gas, enter combustion chamber or condensation chamber carries out processing, in whole method, waste gas and adsorbing medium are all be in flow regime, adsorption efficiency is higher, and adsorption and desorption synchronously carries out, also substantially increase the efficiency of waste gas purification.In addition, in step 2) after, adsorbing medium after desorption is transported back again to adsorption chamber, repeat step 1), 2), adsorbing medium can be made so uninterruptedly to circulate between adsorption and desorption, adsorbing medium remains good adsorption activity, ensure that the purification efficiency of waste gas, substantially increases the utilization ratio of adsorbing medium.
As described in Figure 1, be a kind of embodiment of fluidized bed type cleaning equipment for waste organic gas of the present invention, this device comprises an adsorption chamber 1, desorption chamber 4, and desorption chamber 4 is positioned at the below of adsorption chamber 1.The side of adsorption chamber 1 is provided with exhaust gas inlet 2, and opposite side is provided with cleaning of off-gas outlet 3, and it is inner that waste gas enters adsorption chamber 1 from exhaust gas inlet 2 level, and after organic exhaust gas is adsorbed, remaining cleaning of off-gas can export 3 direct qualified discharges from cleaning of off-gas.
The adsorbing medium 5 moved is provided with from top to bottom in the inside of adsorption chamber 1, these adsorbing mediums 5 are mainly any one or its mixture in zeolite, molecular sieve, active carbon, activated alumina, organic exhaust gas wherein can be adsorbed, when adsorbing medium 5 moves from top to bottom, the waste gas square crossing that will enter in adsorption chamber 1 with level is met, the organic exhaust gas contained in waste gas absorb by adsorbing medium 5 and continue fall.
Be provided with for the desorption apparatus by organic exhaust gas and adsorbing medium 5 desorption in desorption chamber 4 inside, what select in this embodiment is heater, usually can select infrared radiation heating device, the object of the desorption that can realize being rapidly heated.Be provided with carrier gas inlet 6 in the side of desorption chamber 4, opposite side is provided with carrier gas outlet 7, needs in desorption chamber 4, to pass into carrier gas (can select air or inert gas or nitrogen according to the difference of organic exhaust gas) by carrier gas inlet 6 during work.After in the adsorbing medium 5 with organic exhaust gas to fall to below desorption chamber 4 from adsorption chamber 1, in desorption chamber 4 desorption apparatus effect under realize desorption, the organic exhaust gas that desorption gets off is taken out of by carrier gas, enters combustion chamber or condensation chamber carries out two stage treatment.
This embodiment also comprises the hopper 8 for holding adsorbing medium 5, the lower ending opening of this hopper 8 is positioned at adsorption chamber 1, valve (not shown) is also provided with at the lower ending opening place of hopper 8, for controlling the caliber of hopper 8 lower ending opening, and then control the flow velocity of adsorbing medium 5, to adapt to the organic exhaust gas of variety classes and variable concentrations.This hopper 8 can realize the unpowered flowing of adsorbing medium 5, and adsorbing medium 5 can carry out the movement of falling object under self gravitation effect.
In order to improve the utilization ratio of adsorbing medium 5, the bottom surface opening of the desorption chamber 4 of this embodiment, the below of opening is provided with conveyer belt 9, and this conveyer belt 9 directly extends to hopper 8 place, its effect is that the adsorbing medium 5 after being completed by desorption is promoted in hopper 8 again, realizes recycling.Certainly, the motion of conveyer belt 9 also needs the auxiliary equipment such as motor to provide power.
Fluidized bed type organic waste-gas purification method of the present invention and device technique, structure are simple, easy to operate, effectively can reduce the cost of waste gas purification, improve the efficiency of waste gas purification.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. fluidized bed type organic waste-gas purification method, is characterized in that, comprises following sequential steps:
1) adsorb, by waste gas in the horizontal direction by adsorption chamber, organic exhaust gas adsorb by the adsorbing medium that moves from top to bottom in adsorption chamber;
2) desorption, the adsorbing medium with organic exhaust gas drops down onto in desorption chamber and carries out desorption, and the organic exhaust gas that desorption gets off is taken desorption chamber out of by carrier gas and processed.
2. fluidized bed type organic waste-gas purification method as claimed in claim 1, is characterized in that: in step 2) after, the adsorbing medium after desorption is transported back again to adsorption chamber, repeats step 1), 2).
3. fluidized bed type cleaning equipment for waste organic gas, is characterized in that: comprise
Adsorption chamber, the side of described adsorption chamber is provided with exhaust gas inlet, and opposite side is provided with cleaning of off-gas outlet, is provided with the adsorbing medium moved in described adsorption chamber from top to bottom;
Desorption chamber, described desorption chamber is positioned at below described adsorption chamber, and described adsorbing medium falls in described desorption chamber by described adsorption chamber, and the side of described desorption chamber is provided with carrier gas inlet, and opposite side is provided with carrier gas outlet, is also provided with desorption apparatus in described desorption chamber.
4. fluidized bed type cleaning equipment for waste organic gas as claimed in claim 3, it is characterized in that: also comprise the hopper for holding described adsorbing medium, the lower ending opening of described hopper is positioned at described adsorption chamber.
5. fluidized bed type cleaning equipment for waste organic gas as claimed in claim 4, is characterized in that: the lower ending opening place of described hopper is provided with the valve for controlling described adsorbing medium flow velocity.
6. the fluidized bed type cleaning equipment for waste organic gas as described in claim 4 or 5, it is characterized in that: the bottom surface opening of described desorption chamber, the below of described opening is provided with conveyer belt, adsorbing medium in described desorption chamber falls on described conveyer belt from described opening after desorption, described conveyer belt extends to described hopper, for being promoted in described hopper by the adsorbing medium after desorption.
7. fluidized bed type cleaning equipment for waste organic gas as claimed in claim 3, is characterized in that: described desorption apparatus is heater.
8. fluidized bed type cleaning equipment for waste organic gas as claimed in claim 3, is characterized in that: described carrier gas is air or inert gas or nitrogen.
9. fluidized bed type cleaning equipment for waste organic gas as claimed in claim 3, is characterized in that: described adsorbing medium is any one or its mixture in zeolite, molecular sieve, active carbon, activated alumina.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510695704.XA CN105233625A (en) | 2015-10-22 | 2015-10-22 | Fluidized bed type organic exhaust purification method and device |
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| CN201510695704.XA CN105233625A (en) | 2015-10-22 | 2015-10-22 | Fluidized bed type organic exhaust purification method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112807888A (en) * | 2020-12-23 | 2021-05-18 | 汪开放 | Industrial waste gas purification process |
| CN113648783A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Integrated processing method for VOCs gas |
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| US4784836A (en) * | 1984-03-16 | 1988-11-15 | Lennart Karlsson | Device for the purification of gas, especially combustion gas |
| US5538541A (en) * | 1995-04-03 | 1996-07-23 | On-Demand Environmental Systems Inc. | Apparatus and method for removing volatile organic compounds from an air stream |
| CN1539546A (en) * | 2003-11-02 | 2004-10-27 | 华北电力大学 | Method and equipment of desulfurization and denitrogenation for purifying flue gas |
| CN205095617U (en) * | 2015-10-22 | 2016-03-23 | 韩志军 | Fluid -bed organic waste gas purifier |
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- 2015-10-22 CN CN201510695704.XA patent/CN105233625A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3716969A (en) * | 1970-12-10 | 1973-02-20 | Sumitomo Heavy Industries | Continuous moving layer type adsorption device |
| US4784836A (en) * | 1984-03-16 | 1988-11-15 | Lennart Karlsson | Device for the purification of gas, especially combustion gas |
| US5538541A (en) * | 1995-04-03 | 1996-07-23 | On-Demand Environmental Systems Inc. | Apparatus and method for removing volatile organic compounds from an air stream |
| CN1539546A (en) * | 2003-11-02 | 2004-10-27 | 华北电力大学 | Method and equipment of desulfurization and denitrogenation for purifying flue gas |
| CN205095617U (en) * | 2015-10-22 | 2016-03-23 | 韩志军 | Fluid -bed organic waste gas purifier |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113648783A (en) * | 2020-05-12 | 2021-11-16 | 中国石油化工股份有限公司 | Integrated processing method for VOCs gas |
| CN113648783B (en) * | 2020-05-12 | 2022-11-01 | 中国石油化工股份有限公司 | Integrated processing method for VOCs gas |
| CN112807888A (en) * | 2020-12-23 | 2021-05-18 | 汪开放 | Industrial waste gas purification process |
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