CN106139840A - Purifier and method containing low concentration VOC waste gas - Google Patents
Purifier and method containing low concentration VOC waste gas Download PDFInfo
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- CN106139840A CN106139840A CN201510188432.4A CN201510188432A CN106139840A CN 106139840 A CN106139840 A CN 106139840A CN 201510188432 A CN201510188432 A CN 201510188432A CN 106139840 A CN106139840 A CN 106139840A
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Abstract
The present invention relates to a kind of purifier containing low concentration VOC waste gas and method, including venturi gas-solid mixer, high-efficiency pulse sack cleaner, oxidizing tower, desorption apparatus, activated carbon powder storage tank, small-sized regenerative oxidation stove, heat exchanger, scrubber, blower fan；Venturi gas-solid mixer of the present invention mixing powdered carbon and waste gas, high-efficiency pulse sack cleaner by be adsorbed with the powdered carbon of VOC be adsorbed VOC after waste gas separation and collection, the waste gas separated is processed by oxidizing tower, the powdered carbon of trapping is desorbed by desorption apparatus, powdered carbon after desorption is delivered to venturi gas-solid mixer reuse, VOC after desorption is decomposed by small-sized regenerative oxidation stove, and heat exchanger reclaims heat energy.Present configuration is simple, enterprise is acceptable by force, it is adaptable to the reuse containing the process of low concentration VOC waste gas, powdered carbon and heat energy reduces cost, avoids the discharge of intermediate state pollutant, and oxidizing tower, small-sized regenerative oxidation stove make removal efficiency be greatly improved.
Description
Technical field
The present invention relates to a kind of purifier and method, particularly to a kind of purifier containing low concentration VOC waste gas and method.
Background technology
PETROLEUM PROCESSING, chemosynthesis, paint manufacture, spray paint, print, synthetic plate, coating, the industry such as electronic product cleaning production in often discharge volatile organic matter (volatile organic
Compounds, VOC), VOC is of a great variety, mainly includes hydro carbons, alcohols, ethers, aldehydes, phenols, lipid, fatty acid, amine and organic halogen system derivant etc., has and pollutes the feature wide, poisonous, foul smelling, discharge capacity are big, concentration is low.
Depending on administering method containing low concentration VOC waste gas will be according to concrete conditions such as the character of gas, treating capacity, local environment hygienic requirements and economic conditions when as selection.The common VOC exhaust gas treatment method containing low concentration has: combustion method, absorption method, plasma method, photolysis method etc..Combustion method is combustible component oxidized generation CO harmful in waste gas by burning2And H2O, main device has: burner, combustor, and the method clearance is high, equipment is simple, but energy consumption is big, and investment and operating cost are high.Absorption method is to utilize porous material that the waste gas containing VOC carries out adsorption treatment, thus reaches to eliminate the purpose of nuisance；Main device has pretreatment unit, absorbing unit, cooling unit, control unit, safety device unit, regenerating unit；The method is thorough to waste gas purification, and adsorption plant is simple, and treatment effeciency is high, but processing equipment is huge, and the requirement to adsorbent is higher.Plasma method is by electrion form, produces a large amount of high energy electron, thus destroys the chemical bond in VOC, ultimately generates CO2And H2O；Main device is plasma reactor；Apparatus is simple, but energy consumption is high, and degradation rate is low, and produces a large amount of intermediate state pollutant.Photolysis method is to irradiate or utilize the photocatalysis characteristic of some catalyst at the light of certain wavelength, makes Organic substance be decomposed；Due to the restriction of material, high-energy photon is absorbed by lamp tube material mostly, and the high-energy photon penetrating glass is limited, therefore efficiency utilization rate is low, and removal efficiency is general, and produces a large amount of intermediate state pollutant.
Summary of the invention
The technical problem to be solved there is provided a kind of purifier containing low concentration VOC waste gas and method, solve existing containing clean-up effect in low concentration VOC exhaust gas purifying method not thoroughly, cost is high, intermediate state pollutant are many technical barrier.
For solving the problems referred to above, the technical scheme is that
A kind of purifier containing low concentration VOC waste gas, including venturi gas-solid mixer, high-efficiency pulse sack cleaner, oxidizing tower, desorption apparatus, activated carbon powder storage tank, small-sized regenerative oxidation stove, heat exchanger, scrubber, blower fan, described venturi gas-solid mixer exhaust outlet is connected to high-efficiency pulse sack cleaner air inlet, high-efficiency pulse bag type dust remover roof exhaust outlet is connected to oxidizing tower air inlet, and oxidizing tower outlet is connected to blower fan；High-efficiency pulse sack cleaner ash bucket is connected to desorption apparatus via powder flow rate regulating valve, desorption apparatus outlet at bottom is connected to activated carbon powder storage tank, activated carbon powder outlet is connected to venturi gas-solid mixer via powder flow rate regulating valve, desorption apparatus top exit is connected to small-sized regenerative oxidation stove via heat exchanger, and small-sized regenerative oxidation fire grate air port is connected to scrubber via heat exchanger.
Preferably, rotary structure reactor it is provided with in described oxidizing tower；
Preferably, heat-conducting oil heating coil pipe it is provided with in described desorption apparatus；
Preferably, it is provided with waste-heat recovery device in described small-sized regenerative oxidation stove；
Alternatively, as preferably, high concentration VOC after desorption can not use small-sized regenerative oxidation stove oxidation removal, it is also possible to uses incinerator or absorption tower to remove, reclaim harmful substance.
A kind of VOC exhaust gas purifying method Han low concentration, comprises the steps:
(1) activated carbon powder and the VOC waste gas Han low concentration are passed through in venturi gas-solid mixer mixing；
(2) waste gas after being adsorbed with the activated carbon powder of VOC and be adsorbed VOC is passed through high-efficiency pulse sack cleaner and carries out separation and collection；
(3) waste gas that high-efficiency pulse sack cleaner separates being passed through oxidizing tower purified treatment, the clean gas after purified treatment is by arranging outside blower fan；
(4) activated carbon powder being adsorbed with VOC step (2) trapped is delivered to desorption apparatus via powder flow rate regulating valve and carries out desorption and regeneration process；
(5) the active powder after desorption apparatus desorption and regeneration is delivered to activated carbon powder storage tank collect, store；
(6) activated carbon powder in activated carbon powder storage tank is delivered to venturi gas-solid mixer via powder flow rate regulating valve；
(7) be desorbed out by desorption apparatus is connected to small-sized regenerative oxidation stove containing high concentration VOC waste gas via heat exchanger and carries out purified treatment, purified gas via after heat exchanger by arranging outside scrubber.
Preferably, above-mentioned steps (2) be by the activated carbon powder of step (1) the mixed VOC of being adsorbed be adsorbed VOC after waste gas be effectively separated trapping, waste gas after separation carries out oxidation processes by purifying column, and the activated carbon powder being adsorbed with VOC carries out desorption process through trapping entrance desorption apparatus.
Preferably, above-mentioned steps (4) is step (2) to be desorbed in desorption apparatus through the activated carbon powder being adsorbed with VOC of trapping, the VOC in activated carbon powder after heating is desorbed out from activated carbon capillary, VOC concentration enrichment 10～15 times can be made, reducing the volume of subsequent processing device, activated carbon is regenerated.
Beneficial effects of the present invention: the structure design of the present invention makes the purification efficiency containing low concentration VOC waste gas improve；Make adsorbing material consumption reduce after the specific surface area of adsorbing material is greatly improved, reduce cost；Use high-efficiency pulse sack cleaner that SR is minimized, the power consumption that reduction system is run, waste gas after being adsorbed with the activated carbon powder of VOC and be adsorbed VOC separates, waste gas obtains the first step and purifies, waste gas after purification carries out oxidation processes by subsequent oxidation tower, make waste gas be purified thoroughly, solve conventional processing device and process a halfway difficult problem；VOC is at high temperature desorbed from activated carbon powder internal capillary by desorption apparatus, and activated carbon powder is regenerated；After desorption high concentration VOC waste gas out is by the small-sized abundant thermal oxidation of regenerative oxidation stove, thoroughly being degraded by VOC, non-secondary pollution, the heat of generation is by heat exchanger reuse, and this method significantly reduces fuel cost compared with directly using thermal oxidation method process；The activated carbon powder of regeneration is back to activated carbon powder storage tank and collects, stores, and reaches to recycle the purpose of activated carbon powder；The handling process of this device is simple, solves the technical problem that prior art treatment effect is thorough, processing cost is higher, intermediate state pollutant are many.
Accompanying drawing explanation
Accompanying drawing is present configuration schematic diagram.
In figure: 1-venturi gas-solid mixer, 2-high-efficiency pulse sack cleaner, 3-oxidizing tower, 4-blower fan, 5,8-powder flow rate regulating valve, 6-desorption apparatus, 7-activated carbon powder storage tank, 9-heat exchanger, 10-small-sized regenerative oxidation stove, 11-scrubber.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1:
As it can be seen, the present invention includes venturi gas-solid mixer 1, high-efficiency pulse sack cleaner 2, oxidizing tower 3, blower fan 4, powder flow rate regulating valve 5,8, desorption apparatus 6, activated carbon powder storage tank 7, heat exchanger 9, small-sized regenerative oxidation stove 10, scrubber 11；Venturi gas-solid mixer 1 is connected to high-efficiency pulse sack cleaner 2, high-efficiency pulse sack cleaner 2 top exhaust outlet is connected to oxidizing tower 3, oxidizing tower 3 outlet is connected to blower fan 4, high-efficiency pulse sack cleaner 2 ash bucket is connected to desorption apparatus 6, desorption apparatus 6 outlet at bottom is connected to activated carbon powder storage tank 7, activated carbon powder storage tank 7 outlet is connected to venturi gas-solid mixer 1, desorption apparatus 6 top exit is connected to small-sized regenerative oxidation stove 10 by heat exchanger 9, and small-sized regenerative oxidation stove 10 is connected to scrubber 11 by heat exchanger 9.
Enter from venturi gas-solid mixer 1 porch containing low concentration VOC waste gas, the VOC waste gas containing low concentration uniformly mixes in venturi gas-solid mixer 1 with activated carbon powder, mixed waste gas together with activated carbon adsorption powder in efficient pulse bag type dust collector 2, during this period, VOC in activated carbon powder quick adsorption waste gas, the activated carbon powder being adsorbed with VOC is trapped by the cloth bag of high-efficiency pulse sack cleaner 2, the isolated waste gas containing very small amount VOC enters oxidizing tower 3 by high-efficiency pulse sack cleaner 2 air vent and carries out further purified treatment, purified gas is via the outer row of blower fan 4.The high-efficiency pulse sack cleaner 2 ash bucket activated carbon powder being adsorbed with VOC out is delivered to desorption apparatus 6 desorption via powder flow rate regulating valve 5 and processes.Activated carbon powder after desorption apparatus 6 desorption and regeneration is delivered to activated carbon powder storage tank 7 by conveyer device.In activated carbon powder storage tank 7, activated carbon powder is delivered to venturi gas-solid mixer 1 via powder flow rate regulating valve 8.Desorption apparatus 6 can make VOC be desorbed out from activated carbon surface, and desorption high concentration VOC waste gas out is by small-sized regenerative oxidation stove 10 oxidation Decomposition after over-heat-exchanger 9, and the gas after oxidation Decomposition is discharged by scrubber 11 washing after over-heat-exchanger 9.
In the present invention, low concentration VOC waste gas will be contained by venturi gas-solid mixer 1 and be sufficiently mixed with activated carbon powder；By high-efficiency pulse sack cleaner 2 by be adsorbed with the activated carbon powder of VOC be adsorbed VOC after waste gas separation and collection；Make strong oxidizer and remaining VOC be sufficiently mixed, react by oxidizing tower 3, reach to remove the purpose of remaining VOC.Being provided with heat-conducting oil heating coil pipe in desorption apparatus 6, the activated carbon powder after absorption heats up after contacting with hot coil, thus is desorbed out by the VOC adsorbed in activated carbon powder, and activated carbon powder is regenerated；The activated carbon powder of regeneration is collected, is stored to activated carbon powder storage tank 7, reaches to recycle the purpose of activated carbon powder；The waste gas containing high concentration VOC being desorbed out by desorption apparatus in small-sized regenerative oxidation stove 10 is direct oxidation into carbon dioxide, water etc., does not produce secondary pollution, and the heat of generation, by heat exchanger 9 reuse, saves resource.
Embodiment 2:
Owing to small-sized regenerative oxidation stove 10 can change one or more in the device such as incinerator, absorption tower into, remaining is the most same as in Example 1, the most no longer illustrates.
Finally it is pointed out that above example is only the more representational example of the present invention.It is clear that the invention is not restricted to above-described embodiment, it is also possible to there are many deformation.Every any simple modification, equivalent variations and modification made above example according to the technical spirit of the present invention, is all considered as belonging to protection scope of the present invention.
Claims (6)
1.OnePlant the purifier containing low concentration VOC waste gas and method, it is characterised in that described VOC purifier includes venturi gas-solid mixer, high-efficiency pulse sack cleaner, oxidizing tower, desorption apparatus, activated carbon powder storage tank, small-sized regenerative oxidation stove, heat exchanger, scrubber, blower fan；Described venturi gas-solid mixer exit is connected to high-efficiency pulse sack cleaner, high-efficiency pulse sack cleaner exhaust outlet is connected to oxidizing tower air inlet, oxidizing tower outlet is connected to blower fan, high-efficiency pulse sack cleaner ash bucket is connected to desorption apparatus, desorption apparatus outlet at bottom is connected to activated carbon powder storage tank, activated carbon powder outlet is connected to venturi gas-solid mixer, desorption apparatus top exit is connected to small-sized regenerative oxidation stove by heat exchanger, and small-sized regenerative oxidation fire grate air port is connected to scrubber by heat exchanger；It is provided with rotary structure reactor in described oxidizing tower, is provided with heat-conducting oil heating coil pipe in described desorption apparatus, in described small-sized regenerative oxidation stove, is provided with waste-heat recovery device；Described small-sized regenerative oxidation stove can also is that incinerator, absorption tower.
Waste gas purification apparatus containing low concentration VOC the most according to claim 1, it is characterised in that be provided with in described purifier can separation and collection be adsorbed with the activated carbon powder of VOC be adsorbed VOC after the high-efficiency pulse sack cleaner of waste gas.
Waste gas purification apparatus containing low concentration VOC the most according to claim 1, it is characterised in that being provided with in described purifier can be by desorption apparatus constantly regenerating for activated carbon powder.
Waste gas purification apparatus containing low concentration VOC the most according to claim 1, it is characterised in that be provided with collection in described purifier, store the activated carbon powder storage tank of activated carbon powder after regenerating.
5. one kind utilizes the waste gas purification apparatus containing low concentration VOC described in claim 1-4 any one claim, it is characterised in that comprise the steps:
(1) activated carbon powder and the VOC waste gas Han low concentration are passed through in venturi gas-solid mixer mixing；
(2) waste gas after being adsorbed with the activated carbon powder of VOC and be adsorbed VOC is passed through high-efficiency pulse sack cleaner and carries out separation and collection；
(3) waste gas that high-efficiency pulse sack cleaner separates being passed through oxidizing tower purified treatment, the clean gas after purified treatment is by arranging outside blower fan；
(4) activated carbon powder being adsorbed with VOC step (2) trapped is delivered to desorption apparatus via powder flow rate regulating valve and carries out desorption and regeneration process；
(5) the active powder after desorption apparatus desorption and regeneration is delivered to activated carbon powder storage tank collect, store；
(6) activated carbon powder in activated carbon powder storage tank is delivered to venturi gas-solid mixer via powder flow rate regulating valve；
(7) be desorbed out by desorption apparatus is connected to small-sized regenerative oxidation stove containing high concentration VOC waste gas via heat exchanger and carries out purified treatment, purified gas via after heat exchanger by arranging outside scrubber.
Purifier containing low concentration VOC waste gas the most according to claim 5, it is characterised in that above-mentioned steps (2) be by the activated carbon powder of step (1) the mixed VOC of being adsorbed be adsorbed VOC after waste gas be effectively separated trapping；Above-mentioned steps (4) is to be regenerated in desorption apparatus by the activated carbon powder being adsorbed with VOC that step (2) traps, and the activated carbon powder making entrance venturi gas-solid mixer is the activated carbon powder with absorbability after regeneration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510178266 | 2015-04-16 | ||
| CN201510178266X | 2015-04-16 |
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| CN106139840A true CN106139840A (en) | 2016-11-23 |
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Cited By (4)
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| CN109092013A (en) * | 2018-10-19 | 2018-12-28 | 扬州超峰汽车内饰件有限公司 | The adsorbent equipment and method of natural-fiber composite material VOC and smell |
| CN109603424A (en) * | 2019-02-01 | 2019-04-12 | 上海汉磊环保科技有限公司 | A kind of renewable method and device thereof dusted except VOCs |
| CN111359369A (en) * | 2020-03-23 | 2020-07-03 | 广州格邦机械工程有限公司 | Active carbon removes to adsorb purifier |
| CN111644167A (en) * | 2020-06-10 | 2020-09-11 | 湖北君集水处理有限公司 | Device and method for efficient regeneration and waste gas treatment of powdered activated carbon |
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| CN111359369A (en) * | 2020-03-23 | 2020-07-03 | 广州格邦机械工程有限公司 | Active carbon removes to adsorb purifier |
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Application publication date: 20161123 |