CN101879405B - Dry-wet integrated desulfurizing dust remover - Google Patents

Dry-wet integrated desulfurizing dust remover Download PDF

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Publication number
CN101879405B
CN101879405B CN2010102269226A CN201010226922A CN101879405B CN 101879405 B CN101879405 B CN 101879405B CN 2010102269226 A CN2010102269226 A CN 2010102269226A CN 201010226922 A CN201010226922 A CN 201010226922A CN 101879405 B CN101879405 B CN 101879405B
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China
Prior art keywords
dust
bag
moisture film
extraction
sedimentation basin
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Expired - Fee Related
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CN2010102269226A
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Chinese (zh)
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CN101879405A (en
Inventor
马正召
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Ningbo Anerda Energy Saving Environment Protection Science & Technology Co Ltd
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Ningbo Anerda Energy Saving Environment Protection Science & Technology Co Ltd
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Priority to CN2010102269226A priority Critical patent/CN101879405B/en
Publication of CN101879405A publication Critical patent/CN101879405A/en
Application granted granted Critical
Publication of CN101879405B publication Critical patent/CN101879405B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The invention relates to a dry-wet integrated desulfurizing dust remover comprising a main body on which an air inlet and an air outlet are arranged. The air inlet is connected with a bag type dust removing device connected with a water film desulfurizing and dust removing device, and the water film desulfurizing and dust removing device is connected with the air outlet; and a discharging room isarranged below the bag type dust removing device, the water film desulfurizing and dust removing device is provided with a sedimentation basin, the lower part of the sedimentation basin is connected to the discharging room, the upper end of the sedimentation basin is connected with a rapid sedimentation tank, the lower part of the rapid sedimentation tank is connected to the discharging room, andthe upper part of the rapid sedimentation tank is connected with a clear water tank connected with the water film desulfurizing and dust removing device. Because the bag type dust removal and the water film desulfurization and dust removal are integrated, the invention reduces occupied area and equipment investment cost, the dust removing efficiency is above 99.5%, and the desulfurizing efficiency is above 75%. In addition, the invention also solves the problem of pollution, reasonably utilizes sludge discharged by the water film desulfurizing and dust removing device to prevent secondary pollution, and simultaneously saves water resources.

Description

Dry-wet integrated desulfurizing dust remover
(1) technical field
The present invention relates to a kind of deduster, especially relate to a kind of desulfurizing dust-collector that the flue dust that comes out from boiler is purified.
(2) background technology
Shortcomings such as the cleaner industrial at metallurgical and chemical industry etc. is a lot, and sack cleaner, water dust scrubber, electrostatic precipitator etc. are arranged, and it has or have only dedusting function, does not have desulfurizing function, and perhaps dust removing effects is undesirable.In the prior art these dedusters have also been done the improvement of a lot of various aspects; As August 13 2008 Granted publication day the patent No. be a kind of moisture film desulfurization of 200720091610.2 utility model patents nebulization dust device; Comprise the dedusting cylindrical shell, dedusting cylindrical shell top is provided with the flue dust inlet, and lower sides is provided with the flue dust outlet; The bottom is provided with discharge outlet, and the dedusting cylinder inboard wall of flue dust inlet below is provided with annular spilling water groove.After having adopted this structure; The water of annular spilling water groove covers inner ring and overflows and flow down; Form the water curtain of a tubular in dedusting area; Annular spilling water groove bottom center is provided with sprayer unit and again the inside of tubular water curtain is formed the water smoke district, and flue dust flows through from the water smoke district in the middle of the water curtain of tubular and passes water curtain, and the flue dust outlet from lower sides is discharged.Also be just like open day on March 4th, 2009 application number be that a kind of desulfurized dust collector with multiple water films is applied for a patent in the invention of 200810051271.4 China; It comprises body; Tangential at the body sidewall is provided with gas approach, in bodies top the flue outlet is set, and in body, is provided with water desulfurizing-dusting device; The structure of said water desulfurizing-dusting device is; The outside sandwich that between tube, forms that body and body are built-in, at a distance from tube and the intermediate course and the central tube that form at a distance from the built-in central tube of tube, outside sandwich, intermediate course and central tube are connected; Above outside sandwich, intermediate course and central tube, be provided with ring-type moisture film generator; Be provided with on intrinsic top communicate with the central tube of water desulfurizing-dusting device take off the mist dehumidifier, take off the conically shaped of one deck at least that the mist dehumidifier comprises that intrinsic top is provided with, take off the mist dehumidifier and export with flue and be communicated with.The lamination that in intermediate course and central tube, all the is provided with formula eddy flow guide plate of misunderstanding each other.Sack cleaner just like the day for announcing be on April 12nd, 2006 patent No. be a kind of sack cleaner of Chinese utility model patent of 200520002167.8; Comprise a casing and several filter bags that are arranged in the said casing; Said casing is provided with air inlet, discharge; Top on the said casing is provided with a collection chamber through dividing plate, and said collection chamber one side is provided with clean gas outlet, and the clean gas outlet connects an exhaust blower through pipeline; The top of each said filter bag connects one respectively and is fixed on Venturi tube on the said dividing plate, and the other end of said each Venturi tube connects a pulse valve respectively, and said each pulse valve connects compressed air hose respectively; On each said filter bag, be wound with plain conductor, the leading-out terminal of each said plain conductor compiles the back and passes back ground connection from said wall box.
In the ordinary course of things, existing equipment has only bag-type dust or moisture film desulfurization and dedusting, though bag-type dust and moisture film desulfurization and dedusting technology comparative maturity; Yet characteristics such as particularly big, that particle is thin to concentration of emission behind the pulverized-coal fired boiler stove, simple bag-type dust and moisture film desulfurization and dedusting still can not be clean with clarifying smoke fully, and going deep into along with environmental protection concept; People are more and more urgent to requirement on environmental protection, and country requires increasingly highly to soot emissions, and need these dust arresters be together in series usually reaches the dedusting purpose; But equipment volume is bigger like this, takes up an area of morely, and power attenuation is big; And bag-type dust is the dry powder discharging; Need moisteningly just can avoid secondary pollution, moisture film desulfurization and dedusting sewage draining exit connects settle pond, ground, to underground implementation secondary pollution.
(3) summary of the invention
In order to overcome deficiency of the prior art, it is a kind of integrated with bag-type dust and moisture film desulfurization and dedusting to pulverized-coal fired boiler that the present invention provides, and dust-removal and desulfurizing efficient is high, take up an area of less, and power consumption is little and can prevent the dry-wet integratedization desulfurizing dust-collector of secondary pollution.
The technical scheme that the present invention solves its technical problem is:
A kind of dry-wet integrated desulfurizing dust remover comprises main body, and main body is provided with air inlet and air outlet; The place is provided with air-introduced machine at air outlet, and described air inlet is communicated with the inlet of a bag-type dust collector, and the outlet of bag-type dust collector is communicated with the inlet of a moisture film desulfation dust-extraction device; The outlet of moisture film desulfation dust-extraction device is communicated with air outlet; The below of described bag-type dust collector is provided with between discharge, and described moisture film desulfation dust-extraction device is provided with the sedimentation basin of collecting slurries, and the bottom of sedimentation basin is passed between discharge through pipeline; Sedimentation basin top connects a rapid precipitation case through an overfall; The bottom of described rapid precipitation case is passed between discharge through pipeline, and the top of rapid precipitation case connects a filtered water tank through an overfall, and described filtered water tank connects the moisture film desulfation dust-extraction device.
As improvement; The pH value on-line monitoring device of circulating water PH value in the test filtered water tank is installed in the filtered water tank; And filtered water tank also connects an adjustment liquid supplementing device by the control of pH value on-line monitoring device; Described filtered water tank is equipped with water pump, through the adjustment liquid in after recirculated water deliver to the moisture film desulfation dust-extraction device through water pump.
As preferably, the moisture film desulfation dust-extraction device is arranged on the top of bag-type dust collector, and the moisture film desulfation dust-extraction device is provided with the reaction zone of dust-removal and desulfurizing, and described sedimentation basin is positioned at the below of reaction zone, and described sedimentation basin is an infundibulate.
As preferably, bag-type dust collector is provided with the filter chamber, is provided with filter bag in the filter chamber, is positioned at the below, filter chamber between described discharge, and is provided with discharge gate between discharge, is infundibulate between described rapid precipitation case and discharge.
As preferably, the pipeline of sedimentation basin lower end is provided with the switch of control discharging mud, and the pipeline of rapid precipitation case lower end also is provided with the switch of control discharging mud.
The present invention can be with bag-type dust, moisture film desulfurization, the sewage purification three equipment that becomes one; Smoke exhaust enters into bag-type dust collector from air inlet; Dust or caught by filter bag because of the warm-up movement effect or because of the inertia force effect or because of the sieving effect; Filter bag is organic fiber or inorfil filter cloth, and the dust that will be adsorbed on the filter bag through deashing mechanism is again cleared up between discharge.Clean air then enters into the moisture film desulfation dust-extraction device from the outlet on cloth bag filter top, and the moisture film desulfation dust-extraction device is with further capture filters of impurity such as dust of not removing in the bag-type dust collector or sulphur.According to chemical attraction and gas-liquid two-phase double-film theory, utilize fine foam and droplet to produce a large amount of interfaces in the moisture film desulfation dust-extraction device, gas contacts with the absorption liquid that sulfur dioxide and dust are absorbed in uphill process and reacts; Remove sulfur dioxide and dust in the gas; Slurries behind absorbing sulfur dioxide and the dust flow into sedimentation basin, and the slurries in the sedimentation basin precipitate, and the mud of sedimentation basin bottom enters between discharge through the pipeline of bottom; The slurries of sedimentation basin top relative clean flow into the rapid precipitation case through overfall; Precipitate once more concentrated, in the rapid precipitation case bottom mud drain between the discharge of bag-type dust collector, the recirculated water that top is comparatively cleaned overflows to filtered water tank through overfall; PH value on-line monitoring device in the filtered water tank carries out the PH test to the recirculated water in the filtered water tank; If test back acidity is stronger, then recirculated water is adjusted liquid and replenish promptly alkaline foams mix through the adjustment liquid supplementing device; So circulatory monitoring is with additional, and control recirculated water remains between the 6.5-7.5.Recirculated water after the neutralization is taken away by water pump, and the film desulfation dust-extraction device that supplies water again uses.The dust that bag-type dust collector is removed all falls between discharge; All be dry powder; Be easy to kick up and form secondary pollution; And being difficult for discharging, the mud of the mud of sedimentation basin and rapid precipitation case is disposed between discharge in the moisture film desulfation dust-extraction device, has realized that with dry powder blend blowdown adds the moistening discharging purpose of water.With all being arranged to infundibulate between sedimentation basin, rapid precipitation case and discharge, help sludge settling and discharging in addition.
Beneficial effect of the present invention is: the present invention is integrated with bag-type dust, moisture film desulfurization and dedusting, has reduced occupation of land, has reduced equipment investment cost; Reduced power attenuation, adopted bag-type dust, efficiency of dust collection is high; Can reach the requirement of country to soot emissions, the back level adopts the moisture film desulfuration efficiency high, can reach the requirement of country to sulfur dioxide (SO2) emissions; Simultaneously the flue dust that does not eliminate in the bag-type dust is further removed, make efficiency of dust collection more than 99.5%, desulfuration efficiency is more than 75%.In addition, the present invention has also solved pollution problem, has reasonably utilized moisture film desulfation dust-extraction device sludge discharged; Make the wet discharging of cigarette ash; Prevent secondary pollution, prevent that also sulfur dioxide from infiltrating the earth and causing underground secondary pollution, simultaneously recirculated water is carried out the pH value on-line monitoring; And utilize once more after rationally handling, practiced thrift water resource.It is reasonable that the present invention has compact conformation, and dedusting and desulfuration efficiency are high, and stable, and water is few, sewage characteristics such as do not outflow.
(4) description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the side-looking structural representation of Fig. 1.
(5) specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain.
Like Fig. 1, shown in 2, a kind of dry-wet integrated desulfurizing dust remover comprises main body; The bottom of main body is provided with air inlet 13, and top is provided with air outlet 8, is provided with bag-type dust collector 2 in the main body; The below of bag-type dust collector 2 is provided with between discharge 5; The top of bag-type dust collector is provided with moisture film desulfation dust-extraction device 1, and air inlet 13 is communicated with the import of bag-type dust collector 2, and the outlet of bag-type dust collector is communicated with the import of moisture film desulfation dust-extraction device; The outlet of moisture film desulfation dust-extraction device is communicated with air outlet 8, and is provided with air-introduced machine at the air outlet place.Be provided with filter chamber 4 in the bag-type dust collector, be provided with filter bag 3 in the filter chamber 4, also be provided with deashing mechanism and be used for removing the laying dust that is adsorbed on the filter bag.The moisture film desulfation dust-extraction device adopts acid resisting material; The moisture film desulfation dust-extraction device is provided with reaction zone 7; Be provided with the absorption liquid that the flow injection apparatus is used for spraying absorbing sulfur dioxide and dust in the reaction zone 7; Produce a large amount of interfaces and be convenient to contact thereby become droplet shape or fine foam shape after absorption liquid sprays, on the reaction zone sidewall, also be formed with moisture film in addition, be used for absorbing sulfur dioxide and dust with gas.The below of reaction zone is provided with a back taper or bucket-shaped sedimentation basin 10, and the bottom of sedimentation basin is passed between discharge 5 through pipeline, and then the mud of bottom is drained between discharge; Sedimentation basin top is provided with overfall 9, and overfall connects a rapid precipitation case 12, and then the overflow water on sedimentation basin top flow into the rapid precipitation case; The bottom of rapid precipitation case 12 is passed between discharge 5 through pipeline, and top is provided with overfall, and overfall connects filtered water tank 14; The recirculated water of the relative cleaning that the rapid precipitation upper box part overflows flows into filtered water tank 14, and pH value on-line monitoring device is installed in the filtered water tank, and filtered water tank also connects an adjustment liquid supplementing device; PH value on-line monitoring device detects recirculated water; When recirculated water was acid, the adjustment liquid supplementing device discharges adjustment liquid to be mixed with recirculated water, adjustment liquid level alkalescence foaming agent; So circulatory monitoring is with additional; The acid-base value of recirculated water is remained between the 6.5-7.5, and the recirculated water after the neutralization extracts through the water pump that connects and is sent to the moisture film desulfation dust-extraction device, sprays or is used for forming moisture film through the flow injection apparatus.Between discharge 5, sedimentation basin 10 and rapid precipitation case 12 be infundibulate, 5 are provided with discharge gate 6 between discharge, the pipeline place that sedimentation basin 10 connects between discharges is provided with switch 11, the pipeline place that connects between discharges at rapid precipitation case 12 also is provided with switch.
Smoke exhaust enters into bag-type dust collector from air inlet, and dust is caught by filter bag, and the dust on the filter bag is then cleared up between discharge through deashing mechanism.Gas enters into the moisture film desulfation dust-extraction device after the cloth bag filter filters, the flow injection apparatus in the moisture film desulfation dust-extraction device sprays absorption liquid, and droplet produces a large amount of interfaces; On the wall of moisture film desulfation dust-extraction device, form moisture film in addition, gas contacts with absorption liquid in reaction zone and reacts, and removes sulfur dioxide and dust in the gas; Slurries behind absorbing sulfur dioxide and the dust flow into sedimentation basin, and certainly, in the prior art there be much the moisture film desulfation dust-extraction device; Can adopt various structure to reach the moisture film desulfurization and dedusting, the slurries in the sedimentation basin precipitate, open switch after; The mud of sedimentation basin bottom enters between discharge through the pipeline of bottom, and the slurries of sedimentation basin top relative clean flow into the rapid precipitation case through overfall, precipitate concentrated once more; After opening switch, bottom mud drains between the discharge of bag-type dust collector in the rapid precipitation case, and the top recirculated water of cleaning relatively flows into filtered water tank through overfall; PH on-line monitoring device carries out the pH value test to recirculated water, and when being acidity, the alkaline foaming agent that control adjustment liquid supplementing device discharges in it neutralizes to recirculated water; PH value on-line monitoring device real time on-line monitoring when recirculated water is neutralized between the 6.5-7.5, then stops neutralization; Recirculated water after the neutralization is taken away by water pump, and the film desulfation dust-extraction device that supplies water again uses.The dust that bag-type dust collector is removed all falls between discharge; All be dry powder; Be easy to kick up and form secondary pollution; And being difficult for discharging, the mud of the mud of sedimentation basin and rapid precipitation case is disposed between discharge in the moisture film desulfation dust-extraction device, has realized that with dry powder blend blowdown adds the moistening discharging purpose of water.
The present invention is integrated with bag-type dust, moisture film desulfurization and dedusting, has reduced power attenuation, has reduced occupation of land, and reasonably utilizes moisture film desulfurization and dedusting sludge discharged, realizes the wet discharging of cigarette ash, prevents secondary pollution, also the recycle water resource.It is reasonable that the present invention has compact conformation, and dedusting and desulfuration efficiency are high, and water is few, dust stratification not, sewage characteristics such as do not outflow.

Claims (5)

1. a dry-wet integrated desulfurizing dust remover comprises main body, and main body is provided with air inlet and air outlet; The place is provided with air-introduced machine at air outlet, it is characterized in that: described air inlet is communicated with the inlet of a bag-type dust collector, and the outlet of bag-type dust collector is communicated with the inlet of a moisture film desulfation dust-extraction device; The outlet of moisture film desulfation dust-extraction device is communicated with air outlet; The below of described bag-type dust collector is provided with between discharge, and described moisture film desulfation dust-extraction device is provided with the sedimentation basin of collecting slurries, and the bottom of sedimentation basin is passed between discharge through pipeline; Sedimentation basin top connects a rapid precipitation case through an overfall; The bottom of described rapid precipitation case is passed between discharge through pipeline, and the top of rapid precipitation case connects a filtered water tank through an overfall, and described filtered water tank connects the moisture film desulfation dust-extraction device.
2. dry-wet integrated desulfurizing dust remover according to claim 1; It is characterized in that: the pH value on-line monitoring device that circulating water PH value in the test filtered water tank is installed in the described filtered water tank; And filtered water tank also connects an adjustment liquid supplementing device by the control of pH value on-line monitoring device; Described filtered water tank is equipped with water pump, through the adjustment liquid in after recirculated water deliver to the moisture film desulfation dust-extraction device through water pump.
3. dry-wet integrated desulfurizing dust remover according to claim 1 and 2; It is characterized in that: described moisture film desulfation dust-extraction device is arranged on the top of bag-type dust collector; The moisture film desulfation dust-extraction device is provided with the reaction zone of dust-removal and desulfurizing; Described sedimentation basin is positioned at the below of reaction zone, and described sedimentation basin is an infundibulate.
4. dry-wet integrated desulfurizing dust remover according to claim 3; It is characterized in that: described bag-type dust collector is provided with the filter chamber; Be provided with filter bag in the filter chamber; Be positioned at the below, filter chamber between described discharge, and be provided with discharge gate between discharge, be infundibulate between described rapid precipitation case and discharge.
5. dry-wet integrated desulfurizing dust remover according to claim 4 is characterized in that: the pipeline of described sedimentation basin lower end is provided with the switch of control discharging mud, and the pipeline of rapid precipitation case lower end also is provided with the switch of control discharging mud.
CN2010102269226A 2010-07-09 2010-07-09 Dry-wet integrated desulfurizing dust remover Expired - Fee Related CN101879405B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922591B (en) * 2011-02-10 2014-07-30 于晓林 Making die for circulating atomization device
CN108325331A (en) * 2018-05-04 2018-07-27 佛山市建金建电子科技有限公司 A kind of microbubble cartridge type precipitron
CN108619805A (en) * 2018-05-04 2018-10-09 佛山市建金建电子科技有限公司 A kind of microbubble air precipitron

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CN201744296U (en) * 2010-07-09 2011-02-16 宁波安尔达节能环保科技有限公司 Dry-wet integrated desulfurizing and dust removal device
JP5184855B2 (en) * 2006-10-11 2013-04-17 ツリュツラー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト A device having at least one pressure medium cylinder for loading the drafting system rollers, especially in drafting systems of spinning machines such as Nershino frames, card machines, combing machines, etc.
JP6170164B2 (en) * 2013-09-13 2017-07-26 日立マクセル株式会社 Projection display device

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Publication number Priority date Publication date Assignee Title
EP0044916A2 (en) * 1980-05-24 1982-02-03 Hölter, Heinz, Dipl.-Ing. Process and apparatus for the separation of sulfur dioxide and other pollutants from flue gas
CN2045670U (en) * 1989-03-22 1989-10-11 个旧市矿产加工总厂 Wet dust collector
DE29716683U1 (en) * 1997-09-17 1998-04-09 Schumann Klaus Downflow filter system in modular design with compact filter elements
CN2482449Y (en) * 2001-06-20 2002-03-20 李汉松 Oil fumes purifier with water film electrostatic and cloth bag dedusting
CN2675231Y (en) * 2004-02-18 2005-02-02 单国良 Combined type flue desulfurizing and dust-removing purifier
JP5184855B2 (en) * 2006-10-11 2013-04-17 ツリュツラー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディトゲゼルシャフト A device having at least one pressure medium cylinder for loading the drafting system rollers, especially in drafting systems of spinning machines such as Nershino frames, card machines, combing machines, etc.
CN201744296U (en) * 2010-07-09 2011-02-16 宁波安尔达节能环保科技有限公司 Dry-wet integrated desulfurizing and dust removal device
JP6170164B2 (en) * 2013-09-13 2017-07-26 日立マクセル株式会社 Projection display device

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