CN201361521Y - Purifier for harmful waste gas - Google Patents
Purifier for harmful waste gas Download PDFInfo
- Publication number
- CN201361521Y CN201361521Y CNU2008201714916U CN200820171491U CN201361521Y CN 201361521 Y CN201361521 Y CN 201361521Y CN U2008201714916 U CNU2008201714916 U CN U2008201714916U CN 200820171491 U CN200820171491 U CN 200820171491U CN 201361521 Y CN201361521 Y CN 201361521Y
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- purifier
- absorption
- harmful exhaust
- liquid
- tower
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Abstract
The utility model relates to a purifier for harmful waste gas, which comprises an absorption tower and an absorption liquid circulation tank arranged in the lower part of the absorption tower; wherein, the upper part of the absorption tower is provided with a liquid inlet and a gas outlet; the lower part of the absorption tower is provided with a gas inlet and a liquid outlet; the liquid outlet is connected with the liquid inlet through a pipeline provided with a circulation pump and a valve; and a group of electrodes are immersed in the absorption liquid circulation tank, and are detachably connected with a current generator. The current generator is a direct-current or pulse current generator. The purifier has the advantages of simple structure, higher treatment efficiency and lower equipment and operation costs.
Description
Technical field
The utility model relates to a kind of purifier of harmful exhaust, particularly removes hydrocarbon, halogen-containing or organic matters such as sulphur, nitrogen element from air-flow, and the device of inorganic waste gases such as sulfur dioxide, hydrogen sulfide, nitrogen oxide, hydrogen cyanide or ammonia.
Background technology
Various organic gas pollutants such as hydrocarbon, alcohol, ether, aldehyde, phenol, ketone, ester, nitrile, amine and heterocyclic compound furans etc., inorganic pollutions such as sulfur dioxide, hydrogen sulfide, nitrogen oxide, hydrogen cyanide and ammonia, extensively result from industrial processes such as chemical industry, pharmacy and application, these volatile organic matters are poisonous mostly, some is a foul gas, after entering atmosphere, the meeting influence ecological environment is detrimental to health.But,, bring very big difficulty to environment protection treating because these organic matters have steady chemical structure, are difficult for degraded.
Usually, absorption process is one of main means of handling these organic exhaust gas and foul gas, the waste gas that chemical process is produced particularly, and absorption process (generally with the aqueous solution as absorbent) security is good, has obtained extensive use.But absorption process is to water-soluble bad as halogenated hydrocarbons, triphen class, and when nuisances such as nitrogen oxide, ammonia absorbed, absorption efficiency was low, and absorption liquid is saturated easily.In addition, the solution after the absorption is as without further processing, and the nuisance that is absorbed after the processing can evaporate again, will cause the generation of secondary pollution.
Therefore, how in the absorption efficiency of the nuisance that improves these poorly water-solubles, the generation that can avoid secondary pollution again is a urgent problem in the waste gas pollution control and treatment process.The present patent application people has proposed to adopt electrochemical process to handle these difficult harmful exhausts that absorbs, and its basic principle is an electrochemical reaction of utilizing electrolytic process to take place at electrode surface, produces strong oxidizing property material such as O, OH, ClO and HO
2Deng, these strong oxidizing property materials finally are converted into harmless object to nuisance in absorption process and absorbate reaction.Before the application, the applicant has applied for the patent of being correlated with: ZL200510060254.3, denomination of invention is a kind of purification method and isolated plant thereof of harmful exhaust.This invention has proposed a kind of purification method of harmful exhaust, it is characterized in that it being that the pending gas that contains alcohol, ether, aldehyde, phenol, ketone or ester organic matter harmful exhaust is imported the absorption tower, enter the electrocatalysis oxidation reaction device after wherein harmful exhaust is absorbed by liquid absorption, in the electrocatalysis oxidation reaction device, absorption liquid is carried out electrocatalysis oxidation reaction, making the further oxidation conversion of absorption product is chemically stable material, make absorption liquid obtain regeneration, recover absorbability, the gas of handling is purified; Described absorption liquid is to recycle; Simultaneously, also provide the isolated plant that is used for this purification method, one side connects the oxidation that the electrocatalysis oxidation reaction device is realized absorption liquid to this device on the absorption tower, makes absorption liquid be regenerated.Yet this method is absorption liquid to be led to carry out oxidation in the electrocatalysis oxidation reaction device, and the absorption liquid after the oxidation is introduced in the absorption tower by pipeline again, the introducing of drawing like this makes treatment effeciency not high enough, and, complex structure, equipment cost and operating cost improve many.
Summary of the invention
For the high deficiency of complex structure, equipment and operating cost that the device that solves existing employing electrochemical process purification of harmful waste gas exists, the utility model proposes the purifier of the harmful exhaust that a kind of simple in structure, treatment effeciency raising, equipment and operating cost reduces.
The utility model adopts following technical scheme:
A kind of purifier of harmful exhaust, comprise the absorption tower, be built in the absorption liquid circulating slot of bottom, absorption tower, top, described absorption tower is provided with inlet and gas outlet, the bottom is provided with air inlet and liquid outlet, described liquid outlet is connected with described inlet by the pipeline that is provided with circulating pump and valve, submergence has the electrode group in the described absorption liquid circulating slot, and described electrode group removably is connected with current generating apparatus.
Further, described current generating apparatus is direct current or pulse current generating device.
Preferably, be provided with the liquid level gauge of measuring liquid level in the absorption liquid circulating slot outside the described absorption tower.
Preferably, described electrode group is immersed in the following 10cm of liquid level.
Described electrode is net formula electrode or board-like electrode; The anode material of described electrode has IrO for the titanium base band
2, RuO
2, MnO
2, PbO
2Or SnO
2Coating of metal oxides, cathode material are titanium material or steel material.
Described electrode group level or vertical direction are arranged.
Described electrode group is made up of the electrode unit of 2～100 groups of parallel stacked, and minus plate and positive plate in the described electrode group are crisscross arranged.
Preferably, described electrode unit is that a positive plate and a minus plate of being arranged in parallel constitute, and minus plate in the described electrode unit and positive plate spacing are 0.5-20cm.
Described absorption tower is general gas-liquid absorption equipment such as spray column, packed tower, bubble tower, rotating stream tray scrubber or sieve-plate tower.Absorption liquid is generally saline solns, with the acid solution effect for well.
Power supply mode that the utility model adopts comprises direct current and pulse, and direct current supply voltage is generally 0.5-30V, and pulse power supply voltage is 0.5-40V, and pulse recurrence frequency is generally 20-5000Hz.The battery lead plate spacing is 0.5-20cm, and current density is generally 50-1000A/m
2Under equal-wattage, adopt the clearance of pulse power supply to want a little higher than direct current supply.
Harmful exhaust in the utility model is various organic gas pollutants such as hydrocarbon, alcohol, ether, aldehyde, phenol, ketone, ester, nitrile, amine and heterocyclic compound furans etc., inorganic pollutions such as sulfur dioxide, hydrogen sulfide, nitrogen oxide, hydrogen cyanide and ammonia.
Technical conceive of the present utility model is: the pending gas that contains harmful waste gas is imported the absorption tower, enter the absorption liquid circulating slot that is arranged on the bottom, absorption tower after wherein harmful exhaust is absorbed by liquid absorption, in the absorption liquid circulating slot, be provided with the electrode group, the electrode group is immersed in below the liquid level, when after adding direct current or Pulse Electric on the electrode group, in the absorption liquid circulating slot electrochemical redox reaction taking place, has strong oxidizing property material such as O, HO in the electrolytic process generation
2And ClO
2Deng, the absorption liquid that contains these strong oxidizing property materials is recycled pump and returns top, absorption tower, the gas that contains these strong oxidizing property materials simultaneously mixes with the air-flow that contains harmful waste gas at Ta Nei, at absorption process oxidizing substance and nuisance generation chemical reaction, finally, reach the purpose of gas purification nuisance oxidation and conversion.Purified gas is discharged from the Purge gas outlet.
Advantage of the present utility model is: treatment effeciency height, equipment cost be low, simple in structure, manipulate easily.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the schematic diagram of embodiment one electrode used therein.
Fig. 3 is the schematic diagram of embodiment two electrode used thereins.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing, but protection domain of the present utility model is not limited only to this.
Embodiment one
With reference to Fig. 1-2: a kind of purifier of harmful exhaust, comprise absorption tower 6, be built in the absorption liquid circulating slot 2 of 6 bottoms, absorption tower, 6 tops, described absorption tower are provided with inlet 6 and gas outlet 7, the bottom is provided with air inlet 8 and liquid outlet, described liquid outlet is connected with described inlet by the pipeline that is provided with circulating pump 1 and valve, submergence has electrode group 10 in the described absorption liquid circulating slot 2, and described electrode group 10 removably is connected with current generating apparatus by binding post.
Described current generating apparatus is direct current or pulse current generating device.
Be provided with the liquid level gauge of measuring liquid level in the absorption liquid circulating slot outside the described absorption tower.In the present embodiment, described electrode group is immersed in the following 10cm of liquid level.
To be pending waste gas by air inlet 8 enter in the absorption tower 6 processing technological flow contacts with spray liquid, carry out absorption reaction, waste gas after the purification is 7 discharges from cat head purified gas gas outlet, absorption liquid enters the circulating slot 2 of tower bottom, to be arranged on add direct current or Pulse Electric on the electrode group 10 in the circulating slot after, electrochemical reaction takes place in the absorption liquid circulating slot produce the strong oxidizing property material, the circulation fluid that contains the strong oxidizing property material is returned the absorption tower by circulating pump 1, and the gas that electrochemical reaction produces mixes with bottom, absorption tower waste gas.
Fig. 2 is the schematic diagram of present embodiment electrode used therein: electrode is single group structural representation of mesh electrode, and anode web plate and cathode screen plate level direction are arranged.Among Fig. 2: 21-negative electrode, 22-anode, 23-support, 24-binding post.
Experimental provision as shown in Figure 1.The absorption tower is a packed tower, and tower diameter is Φ 500mm, and bed stuffing height is 2500mm, and tower bottom circulation fluid storage tank diameter is 1000mm, highly is 1500mm.Electrode adopts shown in Figure 2.Electrode size is 350mm * 350mm, and thick 2mm battery lead plate mesh is 6mm * 12mm.Group of motors is made up of the stack of 6 networking shape electrode units, and horizontally disposed, polar plate spacing is from being 45mm, and the meshed anode material is RuO
2/ Ti, mesh cathode material are stainless steel material.Simulated exhaust is air+gaseous state noxious pollutant, is fed by the absorption tower bottom air inlet, behind the absorption reaction district, is discharged by top.
Experiment condition is: power parameter: electric current 50A
Gas flow: 500m
3/ h, gas temperature: 25 ℃
Absorb circulating fluid flow rate: 10m
3/ h
Absorption liquid: 0.1% hydrogen chloride solution and 1% sodium chloride mixed solution.
Experimental result is as shown in table 1.
Table 1 nuisance removal effect
Embodiment two
With reference to Fig. 1, Fig. 3: the difference of present embodiment and embodiment one is: electrode adopts vertically and arranges, shown in arrangement of electrodes Fig. 3, and among the figure, 21-negative electrode, 22-anode, 23-support, 24-binding post.The electrode group is made up of 6 groups of plate electrode unit, and electrode size is 350mm * 350mm, and thick 2mm, meshed anode material are RuO
2/ Ti, mesh cathode material are stainless steel material.Polar plate spacing is vertically arranged from being 45mm.
Experiment condition is: power parameter: pulse frequency is 100Hz, electric current 100A
Other conditions are with embodiment 1.
Experimental result is as shown in table 2.
Table 2
Claims (9)
1, a kind of purifier of harmful exhaust, comprise the absorption tower, be built in the absorption liquid circulating slot of bottom, absorption tower, top, described absorption tower is provided with inlet and gas outlet, the bottom is provided with air inlet and liquid outlet, described liquid outlet is connected with described inlet by the pipeline that is provided with circulating pump and valve, it is characterized in that: submergence has the electrode group in the described absorption liquid circulating slot, and described electrode group removably is connected with current generating apparatus.
2, the purifier of harmful exhaust as claimed in claim 1 is characterized in that: described current generating apparatus is direct current or pulse current generating device.
3, the purifier of harmful exhaust as claimed in claim 2 is characterized in that: be provided with the liquid level gauge of measuring liquid level in the absorption liquid circulating slot outside the described absorption tower.
4, as the purifier of one of claim 1-3 described harmful exhaust, it is characterized in that: described electrode group is immersed in the following 10cm of liquid level.
5, the purifier of harmful exhaust as claimed in claim 4 is characterized in that: described electrode is net formula electrode or board-like electrode.
6, the purifier of harmful exhaust as claimed in claim 5 is characterized in that: described electrode group level or vertical direction are arranged.
7, the purifier of harmful exhaust as claimed in claim 6 is characterized in that: described electrode group is made up of the electrode unit of 2～100 groups of parallel stacked, and minus plate and positive plate in the described electrode group are crisscross arranged.
8, the purifier of harmful exhaust as claimed in claim 7 is characterized in that: described electrode unit is that a positive plate and a minus plate of being arranged in parallel constitute, and minus plate in the described electrode unit and positive plate spacing are 0.5-20cm.
9, the purifier of harmful exhaust as claimed in claim 8 is characterized in that: described absorption tower is general gas-liquid absorption equipment spray column, packed tower, bubble tower, rotating stream tray scrubber or sieve-plate tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201714916U CN201361521Y (en) | 2008-12-30 | 2008-12-30 | Purifier for harmful waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201714916U CN201361521Y (en) | 2008-12-30 | 2008-12-30 | Purifier for harmful waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201361521Y true CN201361521Y (en) | 2009-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201714916U Expired - Fee Related CN201361521Y (en) | 2008-12-30 | 2008-12-30 | Purifier for harmful waste gas |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075751A1 (en) * | 2008-12-31 | 2010-07-08 | Huang Liwei | Method for absorbing and processing of harmful waste gas by electrochemical means |
| CN102380300A (en) * | 2011-07-11 | 2012-03-21 | 赵松和 | Lampblack and soot liquefying machine |
| CN102886194A (en) * | 2011-07-21 | 2013-01-23 | 天津渤大硫酸工业有限公司 | Sulphur melting odor removing absorbing device |
| CN106284612A (en) * | 2016-08-09 | 2017-01-04 | 赵剑 | The preventing and treating device of harmful gas and administering method in municipal drainage pipe network |
| CN111185089A (en) * | 2020-01-09 | 2020-05-22 | 青岛理工大学 | Novel technology for performing electro-Fenton catalytic degradation on VOCs |
-
2008
- 2008-12-30 CN CNU2008201714916U patent/CN201361521Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010075751A1 (en) * | 2008-12-31 | 2010-07-08 | Huang Liwei | Method for absorbing and processing of harmful waste gas by electrochemical means |
| CN102380300A (en) * | 2011-07-11 | 2012-03-21 | 赵松和 | Lampblack and soot liquefying machine |
| CN102380300B (en) * | 2011-07-11 | 2013-07-03 | 赵松和 | Lampblack and soot liquefying machine |
| CN102886194A (en) * | 2011-07-21 | 2013-01-23 | 天津渤大硫酸工业有限公司 | Sulphur melting odor removing absorbing device |
| CN106284612A (en) * | 2016-08-09 | 2017-01-04 | 赵剑 | The preventing and treating device of harmful gas and administering method in municipal drainage pipe network |
| CN111185089A (en) * | 2020-01-09 | 2020-05-22 | 青岛理工大学 | Novel technology for performing electro-Fenton catalytic degradation on VOCs |
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| 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: 20091216 Termination date: 20121230 |