CN201880477U - Device for removing harmful gas in airflow - Google Patents
Device for removing harmful gas in airflow Download PDFInfo
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- CN201880477U CN201880477U CN2010202447943U CN201020244794U CN201880477U CN 201880477 U CN201880477 U CN 201880477U CN 2010202447943 U CN2010202447943 U CN 2010202447943U CN 201020244794 U CN201020244794 U CN 201020244794U CN 201880477 U CN201880477 U CN 201880477U
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- gas
- absorbent
- corona discharge
- conveyer belt
- serum
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Abstract
The utility model provides a device for removing harmful gas in airflow, which is used for removing gas-state harmful substances containing fluorine, chlorine, sulfur or nitrogen and the organics such as hydrocarbon, mellow, aldehyde and the like in the airflow. The upper part of the device is provided with an airflow passage that consists of a corona discharge reaction area and a gas-solid adsorption reaction area; two ends of the airflow passage space are provided with a gas inlet and a purified gas outlet respectively; the lower part of the device is provided with an absorbent serum pond; the absorbent serum is conveyed to the absorption reaction area from the absorbent serum pond by a conveyor belt; two ends of an absorbent serum circulation pond are provided with a fresh serum inlet and an absorbed serum outlet. In the utility model, the corona discharge and gas-solid absorption coupling mode is adopted, the harmful gas is oxidated and decompounded under the action of corona discharge; simultaneously the acidic outcome in the outcome is absorbed by an alkali absorbent in the reactor; and the absorbent is regenerated and is circularly used by the conveyor belt, thus solving the problem that the absorbent is difficult to replace after being saturated by reaction.
Description
Technical field
The utility model relates to a kind of purifier of pernicious gas, particularly removes the purification method technical field of the pernicious gas that contains in the air-flow.
Background technology
Industrial processes such as chemistry, pharmacy and application produce various pernicious gases, as organic matters such as the gasified harmful substance (comprising organic matter and inorganic matter) of fluorine-containing, chlorine, sulphur or nitrogen and hydrocarbon, alcohols and aldehydes.These pollutants are not only harmful, and some still is a carcinogen, and a large amount of discharging also produced local regional environment and seriously influence, still one of reason of atmospheric photochemistry mist formation.But these materials or water-soluble bad, the characteristics of high volatility or steady chemical structure, difficult degraded are brought very big difficulty to purification.
The additive method of handling above-mentioned pollutant has firing method (comprising Production by Catalytic Combustion Process) and absorption method etc.But said method all has application limit separately, and firing method (comprising Production by Catalytic Combustion Process) is had relatively high expectations to service condition, generally requires at operation more than 200 ℃, investment and running cost height, and needs to solve catalyst easily poisoning and safety anti-explosive problem.Absorption method is higher to the pollutant removing efficient of low concentration, but can't reach the purpose of resolving harmful gas, adsorbent reactivation and subsequent treatment system complex.
Nonequilibrium plasma technology by generations such as pulsed discharge or voltolisings is applied to waste gas pollution control and treatment, and its basic principle is to utilize corona discharge to produce a large amount of high energy electrons and living radical.These high energy electrons and living radical and harmful molecular reaction also make its disassociation oxidation, finally are converted into harmless object.The present inventor had once reported the employing discharge reactor harmful exhaust had been removed experimental result; result of study is referring to " environmental sciences " such as Huang Liwei (2006; Vol1:19-23) and Huang Liwei etc. " colleges and universities' Chemical Engineering journal ", (2007, Vol21:689-694) report.
The purpose of this utility model is design and the device of a kind of corona discharge in conjunction with gas-solid chemical absorbing is provided, make the pernicious gas in the air-flow oxidized, then in gas-solid absorption reaction district, sour gas in the product and solid absorbent reaction, being absorbed agent absorbs, thereby reach the purpose of gas purification, the absorbent circulation absorbs.
Summary of the invention
Technology contents of the present utility model is: a kind of device of removing pernicious gas from air-flow, the top that it is characterized in that described device is the gas channel that corona discharge reaction zone and gas-solid absorption reaction district form, the space that described corona discharge region is made up of the gas channel between the corona discharge utmost point and the battery lead plate, the corona discharge utmost point is connected with high voltage source, counter electrode plate earthing or connect power cathode, described gas-solid absorption reaction district is by the positive space of forming with gas channel of the conveyer belt that is attached with the solid absorbent slurries, two ends, described device gas flow space are provided with gas feed and purify the back gas vent, the bottom of described device is provided with the absorbent slurry pond, two ends, absorbent slurry pond are provided with the import of fresh slurries and absorb the rear slurry outlet, and absorbent is transported to the absorption reaction district by conveyer belt by the absorbent slurry pond.
The version of the corona discharge reacting sucting collector that the utility model adopted can be garden cartridge type and rectangle, and the corona discharge utmost point is generally line style or pin type, and its treatment effect is about the same.Earthing pole or negative pole are general cylinder type or plate, general pulse power supply ground connection, and Alternating Current Power Supply connects power cathode.Electrode material is for being generally conductive materials such as stainless steel, titanium and tungsten.The distance of two electrodes is generally 1-300mm.The distance of the conveyer belt adsorbent surface and the corona discharge utmost point generally is greater than the distance between the corona discharge utmost point and the earthing pole, with favourable corona discharge.The power supply mode of corona discharge that the utility model adopts comprises pulse and exchanges that wherein the voltage of pulse power supply is ± 2K-± 200KV, and pulse recurrence frequency is 10-2kHz, and the voltage of Alternating Current Power Supply is 2K-200KV, and frequency is 10-10kHz.
Pernicious gas described in the utility model is the gasified harmful substance (not comprising hydrogen chloride, hydrogen fluoride and nitrogen oxide) of fluorine-containing, chlorine, sulphur or nitrogen, or organic matters such as hydrocarbon (not comprising methane), alcohols and aldehydes.These material pernicious gases can be oxidized under the effect of corona discharge plasma, the fluorine that contains in the gasified harmful substance, chlorine, sulphur or nitrogen element transform hydrogen fluoride, hydrogen chloride, oxysulfide and nitrogen dioxide, organic matters such as hydrocarbon (not comprising methane), alcohols and aldehydes are converted into organic acid, these products are in gas-solid absorption reaction district, gas-solid absorption reaction takes place with the alkali solid absorbent, both promoted the decomposition reaction of nuisance, and made gas obtain purification again.
Material as solid absorbent in the corona discharge reacting sucting collector that the utility model adopted can be calcium carbonate, calcium oxide, calcium hydroxide, zinc oxide, manganese oxide and magnesia or its mixture.Solid absorbent is good with calcium oxide, calcium hydroxide and zinc oxide, and its assimilation effect is about the same, and the water-soluble back of calcium oxide is a calcium hydroxide.
The bottom of device described in the utility model is provided with the absorbent slurry pond, absorbent is transported to the absorption reaction district by conveyer belt by the absorbent slurry pond, conveyor materials is nylon, plastic cement, cloth or chemical fibre, the conveyer belt front is compounded with the material that can adsorb absorbent, be generally sponge or felt sorbing material as absorbent, compoundly adopt bonding or method such as stitching and conveyer belt are formed one, sponge or felt thickness are generally 5-50mm, are beneficial to absorbent and upload and carry.The conveyer belt width is generally greater than 10mm, specifically according to the reactor size gentle-the affixed time coupling of touching, general gas is generally 2-120 second in the time of staying in absorption reaction district, the time of staying is long, removal efficient height.Behind the absorption reaction after cleaning, upload fresh absorbent attached to the product on the conveyer belt after recycle.Absorbent slurry pond concentration of slurry is generally 20%-80% (percent by volume).
Device described in the utility model is removed described pernicious gas from waste gas the processing procedure of technology is as follows: the pending gas that contains harmful gas is imported reactor by the gas access, air-flow is earlier through corona discharge region, in reaction zone under the effect of corona discharge, pernicious gas in the air-flow is oxidized, obtain acid product, then in gas-solid absorption reaction district, these acid products and absorbent reaction, being absorbed agent absorbs, air communication after the purification is crossed gas vent and is discharged, absorbent after the absorption is delivered to the absorbent slurry pond through cleaning by conveyer belt, sponge on the conveyer belt or felt layers are delivered to the circulation absorption of gas-solid uptake zone after uploading fresh absorbent again, thereby reach the purpose of gas purification.(as line-plate-type reactor) can alternately be arranged in front and back in corona reaction zone and gas-solid uptake zone in reactor, also can a shared space (as line-cartridge reactor).
The utility model has the advantages that: the utility model adopts corona discharge and gas-solid absorption coupled modes, in pernicious gas oxidation under the corona discharge effect, the decomposition, acid product in the product is absorbed by the solid absorbent in the reactor, thereby improved purification efficiency greatly, absorbent is by the conveyer belt system circular regeneration, solve the reaction of the solid absorbent regeneration difficult problem after saturated, and then improved efficiency of energy utilization.
Description of drawings
Fig. 1 is a structural representation one of the present utility model.
Figure 1A is the A-A sectional view of Fig. 1.
Fig. 2 is a structural representation two of the present utility model.
Fig. 2 A is the A-A sectional view of Fig. 2.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail, but protection domain of the present utility model is not limited only to this.
Embodiment one
With reference to Fig. 1: a kind of purifier of harmful exhaust, comprise gas access 1, gas communication space 2, belt-driven motor 3, upper conveyor belt wheel 4, battery lead plate (ground connection) 5, corona high-voltage connection 6, corona wire 7, surface on be loaded with absorbent conveyer belt 8, gas vent 9, lower conveyor belt wheel 10, device bottom be provided with absorbent slurry pond 11, absorbent slurry import 12, absorbent slurry outlet 13, the upper gas free air space has dividing plate 14 to separate with the absorbent slurry layer.
Processing technological flow is that the pending gas that contains harmful gas is imported reactor by gas access 1, air-flow is earlier through corona discharge region, in reaction zone under the effect of corona discharge, pernicious gas in the air-flow is oxidized, decompose, then in gas-solid absorption reaction district, acid product in the product and absorbent reaction, being absorbed agent absorbs, air communication after the purification is crossed gas vent 9 and is discharged, absorbent after the absorption is delivered to absorbent slurry pond 11 by conveyer belt 8 and is cleaned, again deliver to the circulation absorption of gas-solid uptake zone after uploading fresh absorbent on the conveyer belt, thereby reach the purpose of gas purification.
The experimental provision structure as shown in Figure 1.The structure of reactor parameter: install long 900mm, wide 350mm, high 1100mm, integral sealing, inleakage is less than 1%.Inside reactor has 4 groups of 8 conveyer belts, bandwidth 30mm, and the thick sponge of compound 15mm is as the absorbent carrier on the conveyer belt, and last lower drive shaft distance is 60mm for the face-to-face one group of conveyer belt surface distance of 600mm, and the distance between two groups is 100mm.Corona discharge is the stainless steel wire of diameter 0.8mm very, and the corona discharge effective length is 400mm, and battery lead plate length is 40mm, the electroplax plate earthing, and distance is 30mm between two electrodes, symmetric arrangement, the distance of two adjacent battery lead plate center lines and conveyer belt center line is 100mm.The surface roller lower end is immersed under the liquid level of slurries pond under the conveyer belt, the sponge that adheres on the conveyer belt is fully contacted with slurries, wash and upload absorbent slurry, buncher drives upper and lower two rollers and rotates, rotating speed is 1-2 rev/min, moves after 1 hour fresh slurries and imports and exports by slurries and upgrade.
Experiment condition is:
Gas flow: 5m
3/ h; Gas temperature: 25 ℃
Absorbent slurry: calcium hydroxide concentration: 60% (percent by volume) or zinc oxide 60% (percent by volume).
Power parameter: pulse voltage 30kV, pulse frequency 100Hz.
Experimental result is as shown in table 1.
Table 1 nuisance removal effect
Embodiment two
With reference to Fig. 2: a kind of purifier of harmful exhaust, comprise gas access 1, lower baffle plate 2, cylinder electrode plate 3, gas communication space 4, belt-driven motor 5, upper conveyor belt wheel 6, corona high-voltage connection 7, corona wire 8, gas vent 9, overhead gage 10, surface on be loaded with absorbent conveyer belt 11, lower conveyor belt wheel 12, device bottom be provided with absorbent slurry pond 13, absorbent slurry import 14, absorbent slurry outlet 15.
Processing technological flow is that the pending gas that contains harmful gas is imported reactor by gas access 1, air-flow flows in cylinder from lower to upper, in runner, under the effect of corona discharge, pernicious gas in the air-flow is oxidized, decompose, then in gas-solid absorption reaction district, acid product in the product and absorbent reaction, being absorbed agent absorbs, air communication after the purification is crossed gas vent 9 and is discharged, absorbent after the absorption is uploaded fresh absorbent again and is absorbed by delivering to the circulation of gas-solid uptake zone by conveyer belt after delivering to absorbent regeneration pond 13 and clean by conveyer belt 11, thereby reaches the purpose of gas purification.
The experimental provision structure as shown in Figure 2.Reactor is an alveolate texture, main structure parameters: install long 400mm, and wide 800mm, high 1100mm, integral sealing, inleakage is less than 1%.Inside reactor has 4 groups of 8 conveyer belts, bandwidth 30mm, the thick felt of compound 15mm is as the absorbent carrier on the conveyer belt, last lower drive shaft distance is 600mm, corona discharge is the stainless steel wire of diameter 0.8mm very, the corona discharge effective length is 400mm, battery lead plate is an inequilateral octagon alveolate texture cylinder, highly be 400mm, the long limit 80mm in cross section, minor face 40mm (with the air inlet vertical plane), be 12 altogether, both sides opening (device edge be openings at one side for two groups) wherein, opening is 40mm, so that conveyer belt is set.The cylinder electrode plate connects power cathode, and corona wire and battery lead plate vertical range are 30mm, symmetric arrangement, and the distance of corona wire and conveyer belt adsorbent surface is about 50mm, the distance of two adjacent conveyer belt center lines is 80mm.The surface roller lower end is immersed under the liquid level of slurries pond under the conveyer belt, the felt that adheres on the conveyer belt is fully contacted with slurries, wash and upload absorbent slurry, buncher drives upper and lower two rollers and rotates, rotating speed is 1-2 rev/min, moves after 1 hour fresh slurries and imports and exports by slurries and upgrade.
Experiment condition is:
Gas flow: 3m
3/ h; Gas temperature: 25 ℃
Absorbent slurry: calcium hydroxide concentration: 60% (percent by volume) or zinc oxide 60% (percent by volume).
Power parameter: alternating voltage 30kV, a-c cycle 1000Hz.
Experimental result is as shown in table 2.
Table 2 nuisance removal effect
Claims (3)
1. device of from air-flow, removing pernicious gas, the top that it is characterized in that described device be the corona discharge reaction zone gentle-gas channel that Gu Xishoufanyingqu forms, the space that described corona discharge region is made up of the gas channel between the corona discharge utmost point and the battery lead plate, the corona discharge utmost point is connected with high voltage source, counter electrode plate earthing or connect power cathode, described gas-Gu Xishoufanyingqu is by the positive space of forming with gas channel of the conveyer belt that is attached with the solid absorbent slurries, the two ends, gas flow space of described device are provided with gas feed and purify the back gas vent, the bottom of described device is provided with the absorbent slurry pond, absorbent slurry circulatory pool two ends are provided with the import of fresh slurries and absorb the rear slurry outlet, and absorbent slurry is transported to the absorption reaction district by conveyer belt by the absorbent slurry pond.
2. a kind of device of removing pernicious gas from air-flow according to claim 1 is characterized in that alternately arranging or a shared space before and after described corona reaction zone and gas-solid uptake zone are in device.
3. a kind of device of from air-flow, removing pernicious gas according to claim 1, it is characterized in that described conveyor materials is nylon, plastic cement, cloth or chemical fibre, the conveyer belt front is compounded with sponge or the felt sorbing material as absorbent, and the thickness of sponge or felt is 5-50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202447943U CN201880477U (en) | 2010-06-29 | 2010-06-29 | Device for removing harmful gas in airflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202447943U CN201880477U (en) | 2010-06-29 | 2010-06-29 | Device for removing harmful gas in airflow |
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| Publication Number | Publication Date |
|---|---|
| CN201880477U true CN201880477U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202447943U Expired - Fee Related CN201880477U (en) | 2010-06-29 | 2010-06-29 | Device for removing harmful gas in airflow |
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| CN (1) | CN201880477U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856585A (en) * | 2010-06-29 | 2010-10-13 | 黄立维 | Device for removing harmful gas from airflow |
| CN105526649A (en) * | 2016-01-11 | 2016-04-27 | 广州市科帮空气净化科技有限公司 | Purification system for working room of highway toll station |
-
2010
- 2010-06-29 CN CN2010202447943U patent/CN201880477U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101856585A (en) * | 2010-06-29 | 2010-10-13 | 黄立维 | Device for removing harmful gas from airflow |
| CN105526649A (en) * | 2016-01-11 | 2016-04-27 | 广州市科帮空气净化科技有限公司 | Purification system for working room of highway toll station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20130629 |