CN1451480A - Wet desulfurization electrostatic dust-collector - Google Patents
Wet desulfurization electrostatic dust-collector Download PDFInfo
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- CN1451480A CN1451480A CN02122899A CN02122899A CN1451480A CN 1451480 A CN1451480 A CN 1451480A CN 02122899 A CN02122899 A CN 02122899A CN 02122899 A CN02122899 A CN 02122899A CN 1451480 A CN1451480 A CN 1451480A
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- discharge electrode
- discharge electrodes
- machine
- gas
- desulfurization
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/16—Plant or installations having external electricity supply wet type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
- B01D47/063—Spray cleaning with two or more jets impinging against each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/10—Venturi scrubbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/14—Packed scrubbers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/40—Electrode constructions
- B03C3/41—Ionising-electrodes
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
- Electrostatic Separation (AREA)
Abstract
The present invention provides a wet electrostatic desulfurization dust collector, it is characterized in that the collector includes a water sprayer (3) disposed at the lower part of a housing (16) for spraying water and cooling and purifying the flue gas flowing from a flue gas inlet (1) disposed on one side of the housing (16); a water collecting unit (14) disposed at lower part of the collector for collecting the sprayed water to be reused; a porous plate (11) vertically installed at the lower end of the water sprayer (3) for distributing introduced flue gas uniform in the housing(16); a plurality of discharge electrodes (6) are vertically arranged among dust collecting plates (5) extending downward; a plurality of plumbs(15) connected to lower ends of the corresponding discharge electrodes (6) for holding the discharge electrodes vertical by weight; the plumbs (15) are mounted among grid plates (17) for preventing swing of the discharge electrodes (6) caused by the flow of the flue gas from the porous plate (11), the discharge electrodes (6) are electrified by hinders (7) on the dust collecting plates (5); an electrostatic dust collecting layer(30) and the discharge electrodes (6') electrified by the hinder (7') and an adsorption layer(40) being formed of predefined amount of activated carbon (42).
Description
Technical field
The present invention relates to a kind of dust arrester of purifying harmful gas, discharge when being mainly used in burning, melt process such as purifying urban waste, factory's effluent, sewer dirt pernicious gas.Specifically, be used for the oxygen sulfur compound gas etc. that purifying exhaust air contains dust, corrosive substance and causes PUD D by respiratory tract, and health is produced environmental contaminants such as mortality cancer De Er Evil or furans.
Background technology
The general waste gas in (1) thermal power plant, (2) provide the combustion gas of heating boiler, (3) steel-making, (4) pernicious gas that produces in the iron-smelter heat treatment process, (5) pernicious gas that produces in the sulphuric acid recovery process of chemical plant, (6) waste gas that produces in the pernicious gas that produces in the waste combustion equipment, (7) smeltery heavy metal reclaimer and (8) optical cable manufacture process is being carried high concentration dust and harmful heavy metal recovery etc. secretly and is being discharged and contaminated environment in the lump with the form of cigarette.Therefore, when (9) discarded object that produces in the process for producing activity or municipal refuse, to utilize the waste sorting that can utilize again again, bury processing for the discarded object that can rot in the discarded object that can not utilize again, burn to handle or be cured and be sunken to the seabed for having flammable material in the discarded object that can not rot.So in (10) burning is handled, also produce a lot of dusts and pernicious gas.
Particularly, when the burning of these discarded objects is handled, discharge a lot of dusts and pernicious gas, therefore suitable cleaning equipment need be set, prevent that pollutant emission is in atmosphere.
In addition, sulphur composition that contains in the waste gas and airborne combination with oxygen are discharged with the form of oxysulfide.Thereby cause steel construction facility corrosion such as production equipment and bridge, durability reduces, and expense increases.In addition, this material is the main cause that forms smog, and its toxicity can stimulate respiratory apparatus even cause PUD D.
By the dead leaf agent of using in the Vietnam War, fully realize Er Evil toxicity.These two Evil exist in rubbish or decompose during partial combustion and produce the compound that Benzene Chloride, chlorinated phenol and PVC (ethlyene dichloride) etc. have two Evil class chemical constitutions, in rubbish, exist or form during burning and produce Er Evil class, and the material that Yu Er Evil class is not chemically contacted directly also produces Er Evil class by complex reaction by subsequent reactions.
These Er Evil classes, its generation of rising along with temperature when temperature is in the scope of hanging down in combustion furnace sharply improves the generation increase with temperature again after the decline.
Therefore, produce, sufficient ignition temperature and time need be provided, destroy toxic organic compound matter for preventing Er Evil class.But the element of discarded object is formed and is difficult to homogenising, and is difficult to mix, and the low-temperature space in the stove causes incomplete combustion, can not finish the destruction of two Evil classes.Simultaneously, produce Benzene Chloride, chlorinated phenol and the PVC precursor substances such as (ethlyene dichlorides) that is converted into Er Evil class easily.
Especially, in the incineration firing, form again easily, therefore, enter when handling the waste gas facility, need sharply cooling in 250～400 ℃ Er Evil classes.
The dust that produces in the purification of combustion equipment in the past or the equipment of pernicious gas, great majority are not to remove Er Evil class toxicant for its purpose, but remove sour gas or heavy metal etc., therefore discharge Er Evil class, are harmful to health.
In recent years, proposed much to remove the cleaning equipment of Er Evil class, its typical method is an adsorption method, in detail, utilizes reaction or the oxidation reaction or the adsorption reaction of catalyst.
These adsorption methods can be removed Er Evil and be slightly soluble in the oxysulfide of injection water, adsorbent such as active carbon or lime is placed in the front end of cleaning equipment, mix and adsorb with waste gas, controls of dust such as the adsorbent utilization filtration of absorption Er Evil class or precipitator, but contain flare or temperature in the waste gas and cause fire when higher easily, therefore have to spray a certain amount of adsorbent (irrelevant) with waste gas Zhong Er Evil class content always, expense is than higher, and forms in corner warm current or that do not touch adsorbent and may pass through untreated gas.
In addition, precipitator forms the discharge electrode that has negative electricity having between a plurality of collecting plates of positive electricity, makes the inflow pollutants such as dust by containing in the waste gas between the collecting plate have negative electricity, is adsorbed on the collecting plate that has positive electricity, finishes purification.Therefore to the processing of high-temp waste gas with contain the exhaust-gas treatment of high concentration, have advantage, but the pernicious gases that produce in the intractable combustion apparatus etc. etc. need other pernicious gas treatment facilities, and may produce Er Evil once more when temperature is high in the dust arrester.
Summary of the invention
The present invention studies in order to solve an above-mentioned difficult problem.For collecting plate continuity water spray is removed pernicious gas and dust simultaneously, electronegative discharge electrode and the fixed adsorption layer that is filled with active carbon and positively charged are set on the top of wet electrostatic dust arrester.Produce static in the time of not only can improving by discharge electrode like this and the adsorption efficiency of electronegative pollutant, and be untreated during by the wet electrostatic dust arrester clean oxysulfide He toxicants such as Er Evil class can remove.
The simple declaration of accompanying drawing
Fig. 1 is the longitudinal section sketch map of structure of the present invention.
Fig. 2 is the longitudinal section sketch map of the embodiment of the invention 1 structure.
Fig. 3 is the longitudinal section sketch map of the embodiment of the invention 2 structures.
Fig. 4 is the longitudinal section sketch map of the embodiment of the invention 3 structures.
Fig. 5 is a filler details drawing of the present invention.
Major part symbol description among the figure
1: air inlet pipe 3,3 ': injector
5: collecting plate 6,6 ': discharge electrode
7,7 ': insulator 8: washing valve
9: injection valve 11: porous plate
14: outlet 15: fixing hammer
16: this machine 17: the lattice plate
20: packing layer 21: header tank
22: filler 30: the electrostatic precipitator knoisphere
40: adsorption layer 42: active carbon
50: the bending washer
The specific embodiment
Be with reference to describing representative structural principle in detail below with the accompanying drawing.Illustrate when respectively scheming that the same structural element that occurs is represented with identical symbol as far as possible in different figure.
As shown in Figure 1, structure of the present invention is as follows: in order to cool off and to purify the waste gas that enters along this machine 16 1 side air inlet pipe, the injector 3 of water spray is placed in the below of this machine 16, the outlet 14 that the bottom has recovery to spray water, vertical discharge electrode 6 is being arranged on the upper strata of injector 3, in succession and keep vertical fixedly hammer 15 because of deadweight makes discharge electrode 6 in the lower end of discharge electrode 6, fixing hammer 15 is in the exhaust-gas flow that prevents between the lattice plate 17 because of flowing into porous plate 11 and rocks discharge electrode 6, discharge electrode 6 is by insulator 7 energisings by collecting plate 5 tops, electrostatic precipitator knoisphere 30 and electrostatic precipitator knoisphere 30 upper stratas are by the discharge electrode 6 ' of insulator 7 ' energising, and the adsorption layer 40 that is filled with a certain amount of granular active carbon.
At this moment,, remove the dust layer of absorption, injection valve 9 and washing valve 8 are set on the collecting plate 5 of electrostatic precipitator knoisphere 30, forming moisture film.
Above-mentioned injection valve 9 and washing valve 8 can be on electrostatic precipitator knoisphere 30 inject high pressure water.
In embodiments of the invention 1 structure, the upper end of air inlet pipe 1 is provided with bending washer 50, removes the dust in the high waste gas of dust concentration thus, flare enter or adsorption layer 40 bad can not cause that the life cycle of active carbon shortens.
In embodiments of the invention 2 structures, be designed to flexure plane in air inlet pipe 1 this machine of lower end 16, fill the long-pending mass filler 22 of enlarged surface, make it form the above packing layer 20 of one deck, increase the water of ejection and the contact area of waste gas, improve the adsorption treatment efficient of waste gas.
In embodiments of the invention 3 structures, above-mentioned bending washer 50 and packing layer 20 are combined to form.
At this moment, the generation for pollutant in the minimum minimizing combustion apparatus is provided with heat economizer, the waste gas that from the rubbish of temperature combustion more than 850 ℃, produces, and sharply cooling, temperature remains on 130～200 ℃ when flowing into cleaning equipment.Therefore, can not produce temperature in the cleaning equipment of the present invention and cause De Er Evil class, and the importing circle is set, make gas communication smooth and easy in the lower end of this machine 16.
Be connected negative supply on the discharge electrode 6 of above-mentioned electrostatic precipitator knoisphere 30 and the discharge electrode 6 ' of adsorption layer 40, be connected positive supply on collecting plate 5 and the adsorption layer 40, make at discharge electrode 6,6 ' goes up charged pernicious gas is attracted to collecting plate 5 or adsorption layer 40 easily.
This is to utilize the same sex to repel each other, the principle that there is a natural attraction between the sexes.
So, entering the pernicious gas of air inlet pipe 1 and dust major part cools off first in injector 3 or is adsorbed on the collecting plate 5 and reaches purification, the clean pernicious gases such as oxysulfide that wherein are untreated are adsorbed when filling the adsorption layer 40 of active carbon 42, discharge clean gas.
Particularly, as the precursor substance-Benzene Chloride phenols and the combustible substance of two Evil class regenerations, most of water with ejection adsorbs on collecting plate 5 and purifies, and prevents the secondary pollution of regeneration.
In addition; the waste gas that flows in the packing layer 20 more than one deck; fully contact the water of ejection; fully dissolve the oxysulfide in the waste gas; absorption is as the precursor substance-Benzene Chloride phenols of two Evil class regenerations and remove micronized combustible substance, suppresses two Evil regenerations thus to greatest extent, and the water spray by continuing; prevent that the dust collect plant internal temperature from rising, and removes Er Evil and prevent Er Evil regeneration.
As mentioned above, the present invention has improved at offal treatment process exhaust gas discharged sulphur oxide with Er Evil class treatment effeciency, improved treatment effect simultaneously, prevented the secondary pollution that regeneration causes as dust-likes such as the precursor substance-Benzene Chloride phenols pernicious gas of two Evil class regenerations and the ashes that disperses.
Claims (4)
1. wet electrostatic desulfurization dust arrester is characterized in that, comprises the injector (3) of the spraying water in order to cool off and purify the waste gas that the air inlet pipe (1) that is provided with along this machine (16) one sides flows into, and it is arranged on this machine (16) below; The outlet (14) that the lower end has recovery to spray water to recycle; The lower end of above-mentioned injector (3) has the porous plate (11) that evenly disperses inflow exhaust gas in this machine (16); Arranging vertical discharge electrode (6) between the collecting plate (5) that extends downwards; The lower end of discharge electrode (6) connects because of deadweight makes discharge electrode (6) and keeps vertical fixedly hammer (15); Fixing hammer (15) is in the exhaust-gas flow that prevents between the lattice plate (17) because of flowing into by porous plate (11) and rocks discharge electrode (6), discharge electrode (6) is by the energising of the insulator (7) by collecting plate (5) top, electrostatic precipitator knoisphere (30) and by the discharge electrode (6 ') of insulator (7 ') energising and the adsorption layer (40) of filling specified amount granular active carbon (42).
2. the described wet electrostatic desulfurization of claim 1 dust arrester, the front end of wherein said machine (16) has the bending washer (50) that is used for the high concentration dusty gas.
3. the described wet electrostatic desulfurization of claim 1 dust arrester wherein forms flexure plane in this machine of lower end (16) of described air inlet pipe (1), fills the mass filler (22) that has enlarged surface area, makes it form the above packing layer (20) of one deck.
4. any one described wet electrostatic desulfurization dust arrester of claim 1 to 3 wherein has described bending washer (50) and packing layer (20).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2002-0021529A KR100505125B1 (en) | 2002-04-19 | 2002-04-19 | The de-sulfuration de-dioxins Equipment for Waste treatment system |
| KR0021529/2002 | 2002-04-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1451480A true CN1451480A (en) | 2003-10-29 |
Family
ID=29244754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02122899A Pending CN1451480A (en) | 2002-04-19 | 2002-06-18 | Wet desulfurization electrostatic dust-collector |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR100505125B1 (en) |
| CN (1) | CN1451480A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992023A (en) * | 2009-08-20 | 2011-03-30 | (株)安城精机 | Integrated flue gas-purifying apparatus by using old or existing electric dust collector |
| CN102600973A (en) * | 2012-03-16 | 2012-07-25 | 山东大学 | Preposed flue for electrostatic precipitator |
| CN102671767A (en) * | 2012-05-16 | 2012-09-19 | 浙江菲达环保科技股份有限公司 | Wet-type electrical precipitator |
| CN103007681A (en) * | 2012-12-18 | 2013-04-03 | 中冶长天国际工程有限责任公司 | Activated carbon flue gas desulfurization and regeneration device and method |
| CN104492756A (en) * | 2014-12-08 | 2015-04-08 | 沈阳航空航天大学 | Graphite dust disposing device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101020258B1 (en) * | 2008-11-26 | 2011-03-08 | (주)플라즈마텍 | Acidic Exhaust Gas Treatment System |
| KR101141134B1 (en) * | 2010-02-05 | 2012-05-02 | 한국지질자원연구원 | Method for Removing Chloride in Municipal Solid Waste Incineration Bottom Ash via Washing and Carbonation Process |
| KR101239841B1 (en) | 2011-02-09 | 2013-03-11 | 현테크이엔지 주식회사 | White plume and odorous gas treatment module |
| PT2644252E (en) * | 2012-03-29 | 2015-02-17 | Doosan Lentjes Gmbh | A flue gas purification device |
| KR101314466B1 (en) * | 2012-05-29 | 2013-10-07 | 센텍(주) | Reactor for contact gas and liquid |
| KR102008880B1 (en) * | 2018-03-28 | 2019-08-08 | (주)엔노피아 | Complex pollutant treatment device from tire manufacturing process |
| KR102080942B1 (en) * | 2018-05-24 | 2020-02-24 | 이광수 | Polyurethane foam deodorization apparatus |
| CN116422097A (en) * | 2023-03-28 | 2023-07-14 | 北京华兴碳环境科技有限公司 | Industrial waste gas desulfurization and denitrification device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4344113A1 (en) * | 1993-12-23 | 1995-06-29 | Metallgesellschaft Ag | Process for cleaning waste gas from incineration |
| KR100241771B1 (en) * | 1997-06-24 | 2000-02-01 | 강재원 | Method and apparatus for treating harmful gas and dioxins |
| JP3545266B2 (en) * | 1999-07-08 | 2004-07-21 | 川崎重工業株式会社 | Dry exhaust gas treatment method and apparatus |
| JP2001347131A (en) * | 2000-06-05 | 2001-12-18 | Babcock Hitachi Kk | Method and device for removing hazardous material in waste combustion gas |
| KR100384781B1 (en) * | 2000-12-29 | 2003-05-22 | 주식회사 하이닉스반도체 | Duty cycle correction circuit |
-
2002
- 2002-04-19 KR KR10-2002-0021529A patent/KR100505125B1/en active IP Right Grant
- 2002-06-18 CN CN02122899A patent/CN1451480A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101992023A (en) * | 2009-08-20 | 2011-03-30 | (株)安城精机 | Integrated flue gas-purifying apparatus by using old or existing electric dust collector |
| CN102600973A (en) * | 2012-03-16 | 2012-07-25 | 山东大学 | Preposed flue for electrostatic precipitator |
| CN102671767A (en) * | 2012-05-16 | 2012-09-19 | 浙江菲达环保科技股份有限公司 | Wet-type electrical precipitator |
| CN103007681A (en) * | 2012-12-18 | 2013-04-03 | 中冶长天国际工程有限责任公司 | Activated carbon flue gas desulfurization and regeneration device and method |
| CN104492756A (en) * | 2014-12-08 | 2015-04-08 | 沈阳航空航天大学 | Graphite dust disposing device |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030083115A (en) | 2003-10-30 |
| KR100505125B1 (en) | 2005-07-29 |
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