CN103586133B - A kind of differential wet electric precipitator - Google Patents
A kind of differential wet electric precipitator Download PDFInfo
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- CN103586133B CN103586133B CN201310630591.6A CN201310630591A CN103586133B CN 103586133 B CN103586133 B CN 103586133B CN 201310630591 A CN201310630591 A CN 201310630591A CN 103586133 B CN103586133 B CN 103586133B
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Abstract
The invention discloses a kind of differential wet electric precipitator, for air contaminant treatment field.With certain angular array between two differential pole plate rows adjacent in this deduster, form the sphenoid space of some mutual wedgings, cathode frame is positioned at this sphenoid space and shape is corresponding with sphenoid space, and the plane that two working faces are arranged respectively at the differential pole plate of both sides is parallel; Each sphenoid space forms large and small two open sections, its medium and small open section baffle plate shutoff at electric field turnover section.Compared with the wet electrical dust precipitator of common board-like electric field, under equal spatial volume, electric field space utilization rate is high, and specific collection area is large, can improve flue dust collecting efficiency; Special electric field structure, makes to there is low flow velocity district in electric field, to PM0.1 ~ PM10 dust and water smoke collection efficiency high; Polar board surface forms the moisture film of continuous uniform, can keep pole plate never dust stratification, thus ensure that the stable operation of equipment high efficiency rate.
Description
Technical field
The present invention relates to a kind of technical field of dust removal equipment for smoke gas treatment, relate to a kind of differential wet electric precipitator specifically.
Background technology
In recent years, environmental pollution and ecological disruption are on the rise, and city haze phenomenon also takes place frequently.For this reason, country improves constantly air pollution emission operative norm, and at present, the dust emission standard of country to the industry such as coal-fired, metallurgical all controls at 20 ~ 30mg/Nm
3.And in the coming years, country also will improve the standard of soot emissions further, this it is also proposed higher requirement to the Performance And Reliability of cleaner.
The process route of desulfurization after dedusting before the technology arrangement employing of smoke gas treatment mostly now, when original soot emissions require lower, desulphurization plant has final dusting effect, and efficiency of dust collection can reach about 50%.But when dust emission standard is increased to 30mg/Nm
3time following, desulphurization plant does not only have dustproof function, dust concentration of also increasing export on the contrary.Trace it to its cause, the demister efficiency mainly in desulfurizing tower is not high, there is Ca(OH in flue gas after desulfurization)
2and CaSO
4drop, causes smoke secondary to pollute, and chimney breast discharge exceeds standard.Meanwhile, the flue gas after desulfurization contains a large amount of steam and saturated acid drop, causes equipment corrosion after desulfurization, therefore, must be administered can discharge the flue gas after desulfurization.
At present, the most effective equipment of the improvement flue gas after desulfurization of generally acknowledging is wet electrical dust precipitator (being called for short WEP), and it can the discharge of effective control PM0.1 ~ PM10 dust, also comprises the discharge of the cloud and mist of sour gas, heavy metal and organic matter etc.
The mechanism of wet electrical dust precipitator is identical with the dust removal mechanism of dry electric precipitation device, is all make adsorbing powder dust by electrostatic interaction.Difference is that the purge mode after collection dust is different, and the former rinses electrode by water to reach the object removing laying dust, and the latter makes dust depart from electrode by hammering rapping.Wet electrical dust precipitator collecting granules thing is not by the restriction of ratio resistance, high to respirable dust removal efficiency, and all right adsorbed gas, removes SO
3the harmful substances such as the heavy metal in acid mist and flue gas.
But domestic wet electrical dust precipitator starting is more late, and the wet electrical dust precipitator electric field structure of application at present still adopts Conventional tablet electric field mostly, just purge mode is changed into water and rinses, effectively can not play the advantage of wet electrical dust precipitator.And Large-scale machine set field gas velocity is selected higher, and because flat field space availability ratio is low, therefore, equipment efficiency of dust collection is not high.
Summary of the invention
It is high that technical problem to be solved by this invention is to provide a kind of arresting efficiency to flue dust and water smoke, the differential wet electric precipitator that developing result is good.
A kind of differential wet electric precipitator of the present invention, comprise ash bucket, housing, import end socket, cathode frame, differential pole plate is arranged, negative electrode spray system, top cover and outlet end socket, wherein ash bucket is located at housing bottom, housing both sides are respectively equipped with import end socket and outlet end socket, case top is provided with top cover, vertically arranged cathode frame and differential pole plate arrange interlaced arrangement in the housing, negative electrode spray system is arranged in cathode frame top, and with cathode frame indwelling insulation distance, with certain angular array between two adjacent differential pole plate rows, the overall sphenoid space forming some mutual wedgings, each cathode frame is positioned at a sphenoid space and shape is corresponding with sphenoid space, make two working faces parallel with the plane that the differential pole plate of both sides is arranged respectively, each sphenoid space forms large and small two open sections, its medium and small open section baffle plate shutoff at electric field turnover section.
When air-flow enters from import end socket, the electric field channel of wedge shape can be flowed into from big uncork section, because the little open section of electric field channel end is by shutoff, and differential pole plate row is penetrating, therefore air-flow must pass from differential pole plate row, enter adjacent passage, and flow out electric field from the big uncork section of adjacency channel, thus form a kind of baffling electric field of uniqueness.
Each differential pole plate row upper end hangs on the hanging beam that is fixed on housing, and lower end is connected with floating beam.
As improvement, each differential pole plate row middle part is provided with one waistband every 2 ~ 4m, and waistband two ends are arranged the frame column that both sides are provided with respectively and are connected with differential pole plate, waistband and each block differential pole plate are locked mutually.The effect of waistband is in order to fixing differential pole plate, ensures the rigidity of differential pole plate.
As improvement, hanging beam is enclosed type section section bar, and hanging beam closed at both ends, and leave the water inlet connecting main ash flushing water pipeline, hanging beam lower end is equidistantly provided with nozzle, and this nozzle is between adjacent two differential pole plate rows, this nozzle is two-way directing, can spray the differential pole plate row of both sides simultaneously.
Further, described cathode frame is space triangular prism structure, and the spacing that plane arranged by its working face and differential pole plate is 150mm ~ 300mm, and each working face is equidistantly equipped with cathode line, and cathode line spacing is 300mm ~ 600mm.Cathode line form is jaggies, uniform current density, effective for collection fine solid particle.
The water inlet pipe of described negative electrode spray system is equipped with some nozzles, comprises water inlet pipe and is contained in the some second nozzles on water inlet pipe, the corresponding cathode line of each second nozzle arrange and nozzle towards cathode line.Ensure that each root cathode line can be in clean clean conditions all the time, keep good discharge effect.
The present invention is compared with the wet electrical dust precipitator of common board-like electric field, and under equal spatial volume, electric field space utilization rate is high, and specific collection area is large, can improve flue dust collecting efficiency; Special electric field structure, makes to there is low flow velocity district in electric field, to fine solid particle and water smoke collection efficiency high; Polar board surface forms the moisture film of continuous uniform, can keep pole plate never dust stratification, thus ensure that the stable operation of equipment high efficiency rate.Special electric field structure, makes to there is low flow velocity district in electric field, to PM0.1 ~ PM10 dust and water smoke collection efficiency high; Polar board surface forms the moisture film of continuous uniform, can keep pole plate never dust stratification, thus ensure that the stable operation of equipment high efficiency rate.Adopt this technology to administer flue gas after desulfurization, can guarantee that 5mg/Nm is down in outlet soot emissions
3below, even zero-emission is reached.This index, considerably beyond the existing environmental protection standard of country, meets the soot emissions planning in national environmental standard long term.
Accompanying drawing explanation
Fig. 1 is the front view of differential wet electric precipitator of the present invention;
Fig. 2 is the structure chart of differential pole plate row;
Fig. 3 is the top view of differential pole plate row and cathode frame,
Fig. 4 is the stereoscopic-state figure of differential pole plate row and cathode frame,
Fig. 5 is the structure chart of negative electrode spray system;
Fig. 6 is the A-A sectional view of Fig. 5.
Detailed description of the invention
As shown in Figure 1, ash bucket 1 is arranged on housing 2 bottom, and import end socket 3 is arranged in housing 2 both sides with outlet end socket 8, and top cover 7 is arranged in housing 2 top, thus forms the chamber of a sealing.It is inner at housing 2 that 5 interlaced arrangement arranged by cathode frame 4 and differential pole plate, and negative electrode spray system 6 is arranged in cathode frame 4 top, and leaves certain distance with cathode frame 4.
As shown in Figure 2, differential pole plate row 5 is made up of some differential pole plate 9 equidistant arrangement, and differential pole plate 9 upper end is suspended on hanging beam 10, and lower end is fixed on floating beam 15.Hanging beam 10 top correspondence is provided with water inlet 11, bottom is provided with first jet 12, and first jet 12 is arranged in the center between differential pole plate 9, and first jet 12 adopts two-way sensing pattern, can spray respectively to the differential pole plate 9 of both sides, thus form anode spray system.Be provided with waistband 14 in the middle part of differential pole plate row 5, waistband 14 and differential pole plate are arranged the frame column 13 that 5 both sides are provided with and are connected, maintenance differential pole plate 9 channel vertical.
As shown in Figure 3 and Figure 4, with certain angular array between differential pole plate row 5, the sphenoid space of some mutual wedgings is formed.Sphenoid space forms some large and small open sections at electric field turnover section, and the end of big uncork section is little open section, electric field is passed in and out the little open section baffle plate shutoff of section.Cathode frame 4 wedging is arranged in the wedge shape spaces that differential pole plate row 5 formed, and cathode frame 4 is space triangular prism structure, and the plane that wherein two faces of triangular prism are arranged respectively at pole, left and right is parallel, and interplanar distance is 150mm ~ 300mm.Cathode line is equidistantly equipped with in these two faces, and cathode line spacing is 300mm ~ 600mm.
As shown in Figure 5 and Figure 6, negative electrode spray system 6 is made up of water inlet pipe 16 and second nozzle 17, and as shown in Figure 4, second nozzle 17 and water inlet pipe 16 shape have a certain degree, and ensures that nozzle 17 accurately can locate the polar curve in spray cathode frame 4.
Embody rule approach of the present invention is a lot, and the above is only the preferred embodiment of the present invention, should be understood that; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvement, these improvement also should be considered as protection scope of the present invention.
Claims (5)
1. a differential wet electric precipitator, comprise ash bucket (1), housing (2), import end socket (3), cathode frame (4), differential pole plate row (5), negative electrode spray system (6), top cover (7) and outlet end socket (8), wherein ash bucket (1) is located at housing (2) bottom, housing (2) both sides are respectively equipped with import end socket (3) and outlet end socket (8), housing (2) top is provided with top cover (7), vertically arranged cathode frame (4) and differential pole plate arrange (5) interlaced arrangement in housing (2), negative electrode spray system (6) is arranged in cathode frame (4) top, and with cathode frame (4) indwelling insulation distance, it is characterized in that: with certain angular array between two adjacent differential pole plates row (5), the overall sphenoid space forming some mutual wedgings, each cathode frame (4) is positioned at a sphenoid space and shape is corresponding with sphenoid space, make two working faces parallel with the plane that the differential pole plate of both sides is arranged respectively, each sphenoid space forms large and small two open sections, its medium and small open section baffle plate shutoff at electric field turnover section, each differential pole plate row (5) middle part is provided with one waistband (14) every 2 ~ 4m, and waistband (14) two ends are arranged the frame column (13) that both sides are provided with respectively and are connected with differential pole plate, waistband and each block differential pole plate (9) are locked mutually.
2. a kind of differential wet electric precipitator according to claim 1, is characterized in that: each differential pole plate row (5) upper end hangs on the hanging beam (10) that is fixed on housing, and lower end is connected with floating beam (15).
3. a kind of differential wet electric precipitator according to claim 2, it is characterized in that: hanging beam (10) is enclosed type section section bar, and hanging beam closed at both ends, and leave the water inlet (11) connecting main ash flushing water pipeline, hanging beam (10) lower end is equidistantly provided with first jet (12), each first jet is between adjacent two differential pole plate rows, and this first jet (12) is two-way directing, can spray differential pole plate row (5) of both sides simultaneously.
4. a kind of differential wet electric precipitator according to claim 1,2 or 3, it is characterized in that: described cathode frame (4) is space triangular prism structure, the spacing that plane arranged by its working face and differential pole plate is 150mm ~ 300mm, each working face is equidistantly equipped with cathode line, and cathode line spacing is 300mm ~ 600mm.
5. a kind of differential wet electric precipitator according to claim 4, it is characterized in that: negative electrode spray system (6) comprises water inlet pipe (16) and is contained in the some second nozzles (17) on water inlet pipe, the corresponding cathode line of each second nozzle (17) arrange and nozzle towards cathode line.
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| CN201310630591.6A CN103586133B (en) | 2013-12-02 | 2013-12-02 | A kind of differential wet electric precipitator |
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|---|---|---|---|
| CN201310630591.6A CN103586133B (en) | 2013-12-02 | 2013-12-02 | A kind of differential wet electric precipitator |
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| CN103586133A CN103586133A (en) | 2014-02-19 |
| CN103586133B true CN103586133B (en) | 2016-03-30 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920591A (en) * | 2014-04-17 | 2014-07-16 | 江苏天洁环境工程有限公司 | Microchannel high-efficiency wet-type electric precipitator |
| CN104043530A (en) * | 2014-05-27 | 2014-09-17 | 汉王科技股份有限公司 | Electrostatic dust collector |
| CN104014429B (en) * | 2014-06-16 | 2017-01-25 | 章礼道 | Wet type electric dust remover with flexible rotary anode |
| CN106925426B (en) * | 2015-12-29 | 2018-04-10 | 汉王科技股份有限公司 | Electrostatic air cleaner |
| CN105689140B (en) * | 2016-04-15 | 2018-04-10 | 湖北强达环保科技股份有限公司 | A kind of high-efficiency electrostatic dust remover |
| CN108031557A (en) * | 2017-12-20 | 2018-05-15 | 河北汉尧环保科技股份有限公司 | A kind of open type minimum discharge wet electrical dust precipitator |
| CN109499767B (en) * | 2018-12-19 | 2020-07-28 | 宜兴市爱迪尔科技有限公司 | Vertical wet electric dust remover |
| CN115040996B (en) * | 2022-05-05 | 2023-08-08 | 西安交通大学 | Multi-level modularized water mist recycling device based on electric effect |
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| CN101804383A (en) * | 2010-03-25 | 2010-08-18 | 江苏力洁达环保设备工程有限公司 | Differential electric precipitator |
| CN202070401U (en) * | 2011-03-11 | 2011-12-14 | 石家庄虎林环保设备有限公司 | Electrostatic precipitator with partition power supply |
| CN102553720A (en) * | 2011-12-31 | 2012-07-11 | 福建东源环保有限公司 | Dual flow velocity high-efficiency electrostatic dust collector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61118157A (en) * | 1984-11-13 | 1986-06-05 | Nippon Steel Corp | Water film forming apparatus of dust collecting pole in wet electrical dust precipitator |
| JP3427165B2 (en) * | 1994-02-24 | 2003-07-14 | 株式会社エルデック | Electric dust collector |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101804383A (en) * | 2010-03-25 | 2010-08-18 | 江苏力洁达环保设备工程有限公司 | Differential electric precipitator |
| CN202070401U (en) * | 2011-03-11 | 2011-12-14 | 石家庄虎林环保设备有限公司 | Electrostatic precipitator with partition power supply |
| CN102553720A (en) * | 2011-12-31 | 2012-07-11 | 福建东源环保有限公司 | Dual flow velocity high-efficiency electrostatic dust collector |
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