CN103007670B - Electrostatic fabric filter for controlling fine particles PM2.5 and mercury collaborative removal - Google Patents
Electrostatic fabric filter for controlling fine particles PM2.5 and mercury collaborative removal Download PDFInfo
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- CN103007670B CN103007670B CN201210579479.XA CN201210579479A CN103007670B CN 103007670 B CN103007670 B CN 103007670B CN 201210579479 A CN201210579479 A CN 201210579479A CN 103007670 B CN103007670 B CN 103007670B
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Abstract
The invention discloses an electrostatic fabric filter for controlling fine particles PM2.5 and mercury collaborative removal and relates to an industrial dust collector. The electrostatic fabric filter for controlling fine particles PM2.5 and mercury collaborative removal is provided with the electrostatic fabric filter, an adsorbent injection device and an adsorbent container; the electrostatic fabric filter is provided with an inlet speaker, a housing, an electric-field region, an electric bag transition zone, a bag-type dust collecting area, an ash bucket, a gas purifying chamber and an outlet flue; the inlet speaker is arranged at the inlet of the housing; the electric-field region, the electric bag transition zone and the bag-type dust collecting area are arranged in the housing; the electric-field region is arranged at the rear part of the inlet speaker; the electric bag transition zone is arranged between the electric-field region and the bag-type dust collecting area; the ash bucket is arranged at the bottom part of the housing; the gas purifying chamber is arranged at the top of the bag-type dust collecting area; the outlet flue is arranged at the top of the gas purifying chamber and communicated with the gas purifying chamber; the adsorbent injection device and the adsorbent container are arranged at the top of the electric bag transition zone; and a feed outlet of the adsorbent container is connected with a feed inlet of the adsorbent injection device. An adsorbent is fully mixed with flue gas, so that the adsorbent is evenly distributed, and the mercury removal effect of the adsorbent is good.
Description
Technical field
The present invention relates to industrial dust collector, especially relate to a kind of control fine particle PM that is mainly used in purifying the air pollutants of discharging in the industrial processes such as thermoelectricity, cement, iron and steel
2.5the electric-bag complex dust collector of collaborative demercuration.
Background technology
Along with economic fast development, the raising day by day of living standards of the people, it is more and more tighter that country controls requirement to air quality, performance and the reliability of cleaner had higher requirement simultaneously.
PM
2.5refer to that aerodynamic diameter is less than the particle of 2.5 μ m, PM
2.5be easy to toxic heavy metal, acidic oxide and organic pollution etc. in enriched air, it can suck the characteristic of lung, to the harm of health more than PM
10greatly.Country pays much attention to PM
2.5the control of polluting, in November, 2011, State Council's " national environmental protection " 12 " planning " clearly proposes " in zones such as Beijing-Tianjin Ji, the Yangtze River Delta and Pearl River Deltas, to carry out ozone, fine particle (PM
2.5) etc. pollutant monitoring "; In December, 2011, Chinese Ministry of Environmental Protection has reviewed and has passed in principle new " ambient air quality ", and new standard is first by PM
2.5include conventional Air Quality Evaluation in, implement in China.PM
2.5the improvement of ultrafine dust is referred unprecedented height, strengthen PM
2.5the research and development of control technology equipment are imminent.
Simultaneously the Chinese government also pays much attention to the mercury pollution preventing and controlling, and State Council repeatedly forwards relevant the pollution and controls notice, and has formally issued " heavy metal pollution integrated control " 12 " planning ".At present China's coal-burning power plant's Mercury In The Air pollutes and controls pilot work and formally start, and has stipulated the emission limit of mercury and mercuric compounds in (GB13223-2011) in new discharge standard " fossil-fuel power plant atmospheric pollutant emission standard ".Yet the demercuration technology that the domestic and international mercury control technology that also lacks economical and efficient, so Speeding up development at present has China's independent intellectual property right seems particularly urgent.
Removal for particle in coal-fired flue-gas at present mainly adopts electrostatic precipitator and sack cleaner two kind equipments.Electrostatic precipitator is better to the larger flue dust removal effect of particle, but the removal efficiency of fine particle is had much room for improvement; The efficiency of dust collection of bag-type dusting is higher, and fine particle is had to removal effect preferably, but, because dust concentration is higher, causes the bag-type dusting deashing frequent, reduces the service life of filter bag, and increases maintenance cost and management difficulty.And electricity bag compound dust-collection device (the dedusting combination of electric back pkt. before adopting) has solved preferably electric cleaner or sack cleaner and has used separately existing technical problem underlying, but to fine solid particle PM
2.5still need further reinforcement with the trapping aspect of heavy metal Hg.
Chinese patent CN102614728A discloses a kind of control PM
2.5the street lamp rod-type water mist dust fall device that air quality exceeds standard; Comprise the shaft tower base, wherein said shaft tower chassis side is provided with electric control gear and water tank; Be provided with the support roofbolt on the shaft tower base, in the support bar column top, be provided with support platform, be provided with water mist dust fall injection equipment and PM on support platform
2.5supervising device; Be connected by pipeline between described water mist dust fall injection equipment and water tank, on this pipeline, be provided with booster pump; Described electric control gear respectively with water mist dust fall injection equipment, PM
2.5supervising device is connected with the booster pump circuit.
Chinese patent CN102641636A discloses a kind of control PM
2.5the high building water mist dust fall device that air quality exceeds standard; Comprise micro-mist depositing dust injection equipment, wherein said micro-mist depositing dust injection equipment distributing installation is at each building top, and the atomized dust settling edges of regions of adjacent micro-mist depositing dust injection equipment partly overlaps, and forms high-altitude atomized dust settling guard; The equal pipeline of described each micro-mist depositing dust injection equipment connects the feed pipe of city tap-water, on the pipeline between feed pipe and micro-mist depositing dust injection equipment, is equipped with the high pressure liquid pump, and described each high pressure liquid pump all is connected with electric control gear; The equal circuit of described each electric control gear is connected with PM
2.5supervising device, each PM
2.5supervising device is arranged on the side of corresponding micro-mist depositing dust injection equipment.
Summary of the invention
The object of the present invention is to provide a kind of control fine particle PM
2.5the electric-bag complex dust collector of collaborative demercuration.
The present invention is provided with electric-bag complex dust collector, adsorbent jetting device and absorbent container; Described electric-bag complex dust collector is provided with import loudspeaker, housing, electric field region, electricity bag transition region, bag-type dusting district, ash bucket, air-purifying chamber and exhaust pass; Described import loudspeaker are located at the import of housing, and electric field region, electricity bag transition region and bag-type dusting district are located in housing, and electric field region is located at the rear of import loudspeaker, and electricity bag transition region is located between electric field region and bag-type dusting district; Ash bucket is located at the bottom of housing, and air-purifying chamber is located at top, bag-type dusting district, and exhaust pass is located at the air-purifying chamber top and is communicated with air-purifying chamber; Described adsorbent jetting device and absorbent container are located at the top of electricity bag transition region, and the discharging opening of absorbent container is connected with the charging aperture of adsorbent jetting device.
Described electricity bag transition region is provided with at least 2 group positive plate and discharge electrodes, and positive plate and discharge electrode form the electric field passage, and the electric field passage is respectively by positive electric field and negative electric field staggered, and the fore-and-aft distance of described electricity bag transition region can be 400～6000mm; The electricity bag same pole span of transition region plate (being the distance between positive plate and discharge electrode) can be 300～1200mm.
Described adsorbent jetting device can be provided with at least 1 sorbent injection pipe, and described sorbent injection pipe puts in the rear portion of electric field region and the front of electricity bag transition region; Preferably be provided with at least 1 spray-hole on described sorbent injection pipe, on described spray-hole, nozzle be installed.The nozzle of adjacent sorbent injection pipe shifts to install.
The present invention utilizes the characteristic of coalescence technology and absorbent absorption mercury, for controlling fine solid particle PM
2.5discharge with mercury.
Because adopting the multi-tube multi-hole dislocation, relatively sprays adsorbent jetting device of the present invention, be that the adsorbent jetting device has many pipes to put in the rear portion of electric field region, and be provided with a plurality of holes on every pipe, then install nozzle, and the dislocation of the nozzle on every two pipes layout, and relatively spray absorbent, therefore, can make absorbent fully mix with flue gas, absorbent is more evenly distributed, absorbent demercuration better effects if.
The accompanying drawing explanation
The structure that Fig. 1 is the embodiment of the present invention forms schematic diagram.
The schematic top plan view that Fig. 2 is Fig. 1.
The A that Fig. 3 is Fig. 2 is to schematic diagram.
The structure of the electric field region that Fig. 4 is the embodiment of the present invention, electricity bag transition region and adsorbent jetting device forms schematic diagram.
In Fig. 1～4, respectively be labeled as: 1-import loudspeaker, 2-housing, 3-electric field region, 4-electricity bag transition region, 5-bag-type dusting district, 6-ash bucket, 7-filter bag, 8-air-purifying chamber, 9-exhaust pass, 10-adsorbent jetting device, 11-absorbent container, 101-absorbent playpipe, 102-spray-hole, 103-nozzle.
The specific embodiment
The present invention is further illustrated in connection with accompanying drawing for following examples.
Referring to Fig. 1～4, the embodiment of the present invention is provided with electric-bag complex dust collector, adsorbent jetting device 10 and absorbent container 11; Described electric-bag complex dust collector is provided with import loudspeaker 1, housing 2, electric field region 3, electricity bag transition region 4, bag-type dusting district 5, ash bucket 6, air-purifying chamber 8 and exhaust pass 9; Described import loudspeaker 1 are located at the import of housing 2, and electric field region 3, electricity bag transition region 4 and bag-type dusting district 5 are located in housing 2, and electric field region 3 is located at the rear of import loudspeaker 1, and electricity bag transition region 4 is located between electric field region 3 and bag-type dusting district 5; Ash bucket 6 is located at the bottom of housing 2, is provided with filter bag 7 in bag-type dusting district 5, and air-purifying chamber 8 is located at 5 tops, bag-type dusting district, and exhaust pass 9 is located at air-purifying chamber 8 tops and is communicated with air-purifying chamber 8; Described adsorbent jetting device 10 and absorbent container 11 are located at the top of electricity bag transition region 4, and the discharging opening of absorbent container 11 is connected with the charging aperture of adsorbent jetting device 10.
Described electricity bag transition region is provided with at least 1 group positive plate and discharge electrode, and positive plate and discharge electrode form the electric field passage, and the electric field passage is respectively by positive electric field and negative electric field staggered, and described electricity bag transition region 4 fore-and-aft distances can be 400～6000mm; The electricity bag same pole span of transition region plate (being the distance between positive plate and discharge electrode) can be 300～1200mm.
Described adsorbent jetting device 10 can be provided with at least 1 sorbent injection pipe 101, and described sorbent injection pipe 101 puts in the rear portion of electric field region 3 and the front of electricity bag transition region 4; Preferably be provided with at least 1 spray-hole 102 on described sorbent injection pipe 101, on described spray-hole 102, nozzle 103 be installed.The nozzle 103 of adjacent sorbent injection pipe 101 shifts to install.
Control principle of the present invention is: the structure of utilizing existing electric-bag complex dust collector, regulate the position in electric field region 3 and bag-type dusting district 5, the electricity bag transition region 4 that fore-and-aft distance is 400～6000mm between electric field region 3 and bag-type dusting district 5, the electricity bag same pole span of transition region plate (being the distance between positive plate and discharge electrode) is 300～1200mm.Jetting device 10, absorbent container 11 are set on electric field region 3, absorbent container 11 feed are to adsorbent jetting device 10, more than 10 pipe of adsorbent jetting device puts in the rear portion of prime electric field region 3, and open a plurality of holes on every pipe, nozzle is installed on hole, and the dislocation of the nozzle on every two pipes is arranged, and relatively spray absorbent, this spray regime can make absorbent fully mix with flue gas, and absorbent is more evenly distributed, absorbent demercuration better effects if.
As illustrated in fig. 1 and 2, when dust and absorbent enter electricity bag transition region 4, distinguished positive electricity and negative electricity on lotus.When flue gas leaves an electricity bag transition region 4 and enters bag-type dusting district 5, in flue gas, coagulation effect can occur by charges of different polarity Coulomb force with electronegative absorbent and electronegative dust in the absorbent of positively charged and positively charged dust, thereby dust is become to the bulky grain thing with the absorbent coalescence, and charged fine dust and charged mercury are trapped on the bulky grain thing, be formed with the particle of the large particle diameter that is beneficial to the filter bag trapping.Especially with plus-minus electric absorbent can with charged dust in mercury generation coalescence effect, can effectively strengthen the absorption ability to mercury in charged dust.It is more abundant that the dedusting structure of the electricity bag transition region 4 of the positive negative electricity interlaced arrangement of this many groups mixes both positive and negative polarity, and the coalescence better effects if, can effectively control PM by the coalescence technology
2.5the discharge of fine solid particle and mercury.
Flue gas flow of the present invention is: flue gas passes in import loudspeaker 1, after import loudspeaker 1 airflow uniform distribution, flue gas enters in housing 2 more uniformly, again successively after electric field region 3, electricity bag transition region 4,5 dedustings of bag-type dusting district, clean flue gas enters air-purifying chamber 8, at the interior installation pulse ash remover of air-purifying chamber 8, filter bag 7 is carried out to deashing, the deashing of electric field region 3 relies on the rapping apparatus himself arranged, the dust that last deashing falls is fallen in ash bucket 6, and by ash-transmission system, the flying dust in ash bucket 6 is cleared up in time.And the smoke gas flow inlet/outlet flue 9 of air-purifying chamber 8 is discharged flue gas.
Described electricity bag transition region 4 is arranged between electric field region 3 and bag-type dusting district 5, and advantage is:
(1) prime electric field region 3 can be removed the dust of 80% left and right in flue gas, reduces the concentration of dust in flue gas, reduces charged competition and the interference of dust thicker in electricity bag transition region 4, improves fine solid particle PM
2.5with the charged effect of mercury, improve fine solid particle PM
2.5with the arresting efficiency of mercury, the dust concentration of low concentration has also reduced the consumption of absorbent simultaneously.
(2) due to after absorbent sneaks into flying dust, impact that can be negative on the mass formation of flying dust, thus cause flying dust secondary utilization rate low.Therefore electricity bag transition region 4 is arranged between electric field region 3 and bag-type dusting district 5, can effectively solves the low problem of flying dust secondary utilization rate.
As shown in Figure 4, the discharge electrode of electric field region 3 connects negative electricity, the pole plate ground connection of the pole plate of electric field region 3 and electricity bag transition region 4, and the discharge electrode of electricity bag transition region 4 connects positive electricity and negative electricity interlaced arrangement.
Claims (5)
1. control fine particle PM
2.5the electric-bag complex dust collector of collaborative demercuration, is characterized in that being provided with electric-bag complex dust collector, adsorbent jetting device and absorbent container; Described electric-bag complex dust collector is provided with import loudspeaker, housing, electric field region, electricity bag transition region, bag-type dusting district, ash bucket, air-purifying chamber and exhaust pass; Described import loudspeaker are located at the import of housing, and electric field region, electricity bag transition region and bag-type dusting district are located in housing, and electric field region is located at the rear of import loudspeaker, and electricity bag transition region is located between electric field region and bag-type dusting district; Ash bucket is located at the bottom of housing, and air-purifying chamber is located at top, bag-type dusting district, and exhaust pass is located at the air-purifying chamber top and is communicated with air-purifying chamber; Described adsorbent jetting device and absorbent container are located at the top of electricity bag transition region, and the discharging opening of absorbent container is connected with the charging aperture of adsorbent jetting device;
Described electricity bag transition region is provided with at least 2 group positive plate and discharge electrodes, and positive plate and discharge electrode form the electric field passage, and the electric field passage is respectively by positive electric field and negative electric field staggered;
Described adsorbent jetting device is provided with at least 1 sorbent injection pipe, and described sorbent injection pipe puts in the rear portion of electric field region and the front of electricity bag transition region.
2. control fine particle PM as claimed in claim 1
2.5the electric-bag complex dust collector of collaborative demercuration, is characterized in that the fore-and-aft distance of described electricity bag transition region is 400～6000mm.
3. control fine particle PM as claimed in claim 1
2.5the electric-bag complex dust collector of collaborative demercuration, is characterized in that the distance between described positive plate and discharge electrode is 300～1200mm.
4. control fine particle PM as claimed in claim 1
2.5the electric-bag complex dust collector of collaborative demercuration, is characterized in that described sorbent injection pipe is provided with at least 1 spray-hole, is equipped with nozzle on described spray-hole.
5. control fine particle PM as claimed in claim 4
2.5the electric-bag complex dust collector of collaborative demercuration, is characterized in that the nozzle of adjacent sorbent injection pipe shifts to install.
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| CN201210579479.XA CN103007670B (en) | 2012-12-27 | 2012-12-27 | Electrostatic fabric filter for controlling fine particles PM2.5 and mercury collaborative removal |
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| CN201210579479.XA CN103007670B (en) | 2012-12-27 | 2012-12-27 | Electrostatic fabric filter for controlling fine particles PM2.5 and mercury collaborative removal |
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| CN103007670A CN103007670A (en) | 2013-04-03 |
| CN103007670B true CN103007670B (en) | 2014-01-08 |
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| CN103521025B (en) * | 2013-11-04 | 2016-08-17 | 福建龙净环保股份有限公司 | A kind of electric-bag complex dust collector |
| CN103721508A (en) * | 2013-12-09 | 2014-04-16 | 华电电力科学研究院 | Method for realizing circulating efficient demercuration by using 'N+1' type electric precipitator |
| CN103752128A (en) * | 2014-02-11 | 2014-04-30 | 福建龙净环保股份有限公司 | Demercuration device and electrostatic fabric filter provided with demercuration device |
| CN104069713B (en) * | 2014-07-06 | 2016-02-03 | 盐城工学院 | A kind of electricity-bag dust collecting process strengthening coalescence |
| CN105066740B (en) * | 2015-08-05 | 2018-07-17 | 山东万聚节能设备有限公司 | A kind of heat exchanger with dedusting function |
| CN105582775A (en) * | 2016-03-09 | 2016-05-18 | 福建龙净环保股份有限公司 | Demercuration device of dust remover |
| CN106422615A (en) * | 2016-08-02 | 2017-02-22 | 福建龙净环保股份有限公司 | Electrostatic fabric filter for removing multiple pollutants in combined manner |
| CN106512634A (en) * | 2016-12-27 | 2017-03-22 | 盐城工学院 | Streamline ultrafine particle coagulation box |
| CN106731434A (en) * | 2016-12-27 | 2017-05-31 | 盐城工学院 | A kind of combined ultra-fine grain coalescence case |
| CN106823664A (en) * | 2016-12-27 | 2017-06-13 | 盐城工学院 | A kind of horizontal anchor type ultra-fine grain coalescence case |
| CN106731435A (en) * | 2016-12-27 | 2017-05-31 | 盐城工学院 | A kind of angle-style ultra-fine grain coalescence case |
| CN106731433A (en) * | 2016-12-27 | 2017-05-31 | 盐城工学院 | A kind of novel box type coalescer |
| CN109954373A (en) * | 2019-03-11 | 2019-07-02 | 浙江菲达环保科技股份有限公司 | A kind of Hg, SO3Cooperation-removal electric precipitator |
| CN115007314B (en) * | 2022-05-30 | 2023-05-16 | 福建龙净环保股份有限公司 | Coupling enhancement electric bag composite dust collector |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202219126U (en) * | 2011-09-02 | 2012-05-16 | 北京龙电宏泰环保科技有限公司 | Integrated electric bag composite purification device for removing industrial discharged superfine and micro pollutants |
| CN102423599A (en) * | 2011-09-02 | 2012-04-25 | 北京龙电宏泰环保科技有限公司 | Electric bag composite purification device for integrated removal of industrially-discharged ultrafine and micro pollutants, and purification method thereof |
| CN203030152U (en) * | 2012-12-27 | 2013-07-03 | 厦门龙净环保技术有限公司 | Electrostatic fabric filter for controlling fine particle PM2.5 synergic mercury removal |
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