CN102327724B - Electric-bag composite dust collector - Google Patents
Electric-bag composite dust collector Download PDFInfo
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- CN102327724B CN102327724B CN 201110272423 CN201110272423A CN102327724B CN 102327724 B CN102327724 B CN 102327724B CN 201110272423 CN201110272423 CN 201110272423 CN 201110272423 A CN201110272423 A CN 201110272423A CN 102327724 B CN102327724 B CN 102327724B
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Abstract
The invention discloses an electric-bag composite dust collector. The electric-bag composite dust collector comprises a composite dust collecting region in a housing, wherein the composite dust collecting region comprises an electric bag dust collecting region and a first electric field dust collecting region; the electric bag dust collecting region comprises a filter bag region and a second electric field dust collecting region; a filter bag dust collecting device is arranged in the filter bag region, and located on the upper end of the electric bag dust collecting region; an electric field dust collecting device is arranged in the second electric field dust collecting region, which is communicated with the filter bag region and located on the lower end of the electric bag dust collecting region; and an electric field dust collecting device is arranged in the first electric field dust collecting region, which is communicated with the electric bag dust collecting region and located on the front end of the electric bag dust collecting region. In the electric-bag composite dust collector provided by the invention, the second electric field dust collecting region is arranged on the lower end of the electric bag dust collecting region, so that the dust can be recharged when a portion of smoke flows from the first electric field dust collecting region to the second electric field dust collecting region, thereby enhancing the dust charging strength. Additionally, the second electric field dust collecting region can effectively collect dust dropping from the filter bag region when the dust is removed, thereby reducing secondary dust emission, prolonging dust removal period, prolonging the service life of the filter bag, reducing the whole dust removing resistance, and improving the overall performance of the dust collector.
Description
Technical field
The present invention relates to industrial dust collector, be used for purifying the pollutant that the industrial processes such as thermoelectricity, cement, iron and steel are discharged, be specifically related to a kind of electric-bag complex dust collector.
Background technology
Current, the contradiction of socio-economic development and resource environment constraint, environmental protection faces more and more stern challenge.Cause one of air-polluting principal element to be exactly, in the industrial processes such as thermoelectricity, cement, iron and steel, a large amount of dust that the substance combustions such as ature of coal produce have been drained among the atmosphere directly or indirectly.Therefore, the pollutant that purifies the industrial discharges such as thermoelectricity, cement, iron and steel is Air Pollution prevention and control, improves one of major measure of environmental quality, and industrial dust collector is exactly a kind of important Environmental-protecting dust-removing equipment that is widely used in countries in the world.
As everyone knows, electric cleaner and sack cleaner are topmost two kinds of cleaners in the traditional industry deduster.Wherein, electric cleaner has the advantages such as the smoke treatment amount is large, running resistance is low, but its efficiency of dust collection easily is subject to the impact of exhaust gas dust characteristic and fluctuates; The sack cleaner concentration of emission is low, is not subjected to the dust properties influence, but has the shortcomings such as SR is large, energy consumption is high, the operation maintenance workload is large.In recent years, the electricity bag composite dedusting technology of developing for the defective that overcomes above-mentioned two kinds of traditional cleaners is the important breakthrough of industrial dedusting technical development.Electric-bag complex dust collector organically combines electrostatic precipitation and two kinds of principles of dust removal by filtration, fully uses the separately advantage of two kinds of dedusting technologies, has formed the dust removal mechanism of a kind of uniqueness of electric bag composite dedusting.In this novel deduster, at first use the electrostatic precipitation principle front end install electric field region make dust charged and collect under most of dust, remaining dust enters the filter bag district of rear end with air-flow, Charged has changed the filtering feature of dust; In the filter bag district, use the dust removal by filtration principle, realize stable low concentration discharging.Facts have proved, electric bag compound type dust remover has low emission steady in a long-term, saving energy, low, the comprehensive cost performance advantages of higher of operation and maintenance cost.
The dust removing effects of electric-bag complex dust collector is far superior to traditional electric cleaner and sack cleaner, but, increase along with the deduster specification, it is high that the front end pole plate reaches 15m usually, and the filter bag of rear end only is 6～10m, like this, flue gas by the front end electric field approximately has 50% bottom that is introduced into the filter bag district, and then be folded to and enter the filter bag district, charged dust-laden particle will be lost electric charge at flow process, become neutral dust.
Summary of the invention
For the defective of above-mentioned conventional electrostatic fabric filter, the technical problem that the present invention solves is, a kind of electric-bag complex dust collector is provided, and purpose is to make the dust of the bottom, filter bag district of flowing through again charged, and the remove portion dust.In addition, when avoiding the filter bag ash removal system works, produce the reentrainment of dust phenomenon in the inside of deduster, thereby prolong the cleaning cycle of filter bag, the service life of improving filter bag.
A kind of electric-bag complex dust collector provided by the invention comprises the composite dedusting district that is arranged in the casing, and described composite dedusting district comprises electricity bag dedusting area and the first electric field dedusting area.Electricity bag dedusting area includes filter bag district and the second electric field dedusting area, and the filter bag district is provided with the filter bag dust arrester in it, is positioned at the top of described electricity bag dedusting area; The second electric field dedusting area is provided with the electric field dust arrester in it, and is communicated with and is positioned at the bottom of described electricity bag dedusting area with described filter bag district.Be provided with the electric field dust arrester in described the first electric field dedusting area, described the first electric field dedusting area is positioned at the front end of described electricity bag dedusting area, and flue gas enters described electricity bag dedusting area from described the first electric field dedusting area.
Preferably, described the second electric field dedusting area comprises many group negative electrodes and anode, organizes the cathodic discharge electrode wires more, is arranged in parallel, and sets gradually along the horizontal direction of flow of flue gas; Many group plates are arranged in parallel, and set gradually along the horizontal direction of flow of flue gas.
Preferably, described filter bag dust arrester is specially many groups, organizes the filter bag dust arrester more and becomes ranks to arrange and be positioned at the upper end in the second electric precipitation district.
Preferably, described filter bag length can be taken as 6m to 10m.
A kind of electric-bag complex dust collector provided by the invention, lower end in electricity bag dedusting area is provided with the second electric field dedusting area, when deashing, the second electric field dedusting area can effectively absorb the dust that its filter bag district, upper end falls, reduce reentrainment of dust, prolong cleaning cycle, prolong life of bag filter, overall resistance when having reduced dedusting, the overall performance of raising electric-bag complex dust collector.
In a kind of preferred technical scheme of a kind of electric-bag complex dust collector provided by the invention, at the front end of electricity bag dedusting area the first electric field dedusting area is set, flue gas enters described electricity bag dedusting area from described the first electric field dedusting area.This technical scheme, the the first electric field dedusting area that is in upstream side (prime) prime can be collected a large amount of dust, reduce to enter the dust concentration in filter bag district, downstream (rear class), reduced filter bag district dust treating capacity, thereby be conducive to improve the filtration velocity of filter bag.
Description of drawings
Fig. 1 is the internal structure schematic diagram of a kind of preferred version of a kind of electric-bag complex dust collector described in the specific embodiment;
Fig. 2 is the A-A cutaway view shown in Fig. 1;
Fig. 3 is the C-C cutaway view shown in Fig. 1;
Fig. 4 is the B-B cutaway view shown in Fig. 1;
Fig. 5 is soot cleaning system work schematic diagram.
1-the first electric field dedusting area, 2-the second electric field dedusting area, the 3-flue gas, the 4-casing, 5-filter bag district, the 6-smoke air inlet, the 7-air-purifying chamber, the 8-poppet valve device, the 9-flue, the 10-support, 11-filter bag dust arrester, the 12-soot cleaning system, the 13-ash bucket, 14-bypass valve device, sparking electrode line in 15-the first electric field dedusting area, positive plate in 16-the first electric field dedusting area, sparking electrode line in 17-the second electric field dedusting area, positive plate in 18-the second electric field dedusting area, the 19-filter bag, 20-bag cage.
The specific embodiment
Core of the present invention provides a kind of electric-bag complex dust collector, this electric bag compound type dust remover produces reentrainment of dust in the time of can effectively strengthening the first electric field dedusting area 1 to the charging performance of filter bag district 5 dust and reduce filter bag district 5 deashing, prolong cleaning cycle, prolong the service life of filter bag, improve the overall performance of deduster.
A kind of electric-bag complex dust collector provided by the invention, comprise the composite dedusting district that is arranged in the casing, described composite dedusting district comprises electricity bag dedusting area and the first electric field dedusting area 1, described electricity bag dedusting area comprises filter bag district 5 and the second electric field dedusting area 2, wherein be provided with filter bag dust arrester 11 in the filter bag district 5, be positioned at the upper end of described electricity bag dedusting area; Wherein be provided with the electric field dust arrester in the second electric field dedusting area 2, and be communicated with and be positioned at the lower end of described electricity bag dedusting area with described filter bag district 5, like this, to filter bag district deashing the time, the second electric field dedusting area 2 can effectively absorb the dust that the filter bag district 5 of end disposed thereon falls, thereby has reduced reentrainment of dust.
Particularly, filter bag dust arrester 11 is many groups, organizes the upper end that the second electric precipitation district 2 was arranged and be positioned to 11 one-tenth ranks of filter bag dust arrester more.Further, filter bag 19 length in the filter bag dust arrester 11 can be taken as 6m to 10m.
Obviously, in order to strengthen the dust removing effects of above-mentioned electric bag compound type dust remover, thereby can set up the first electric field dedusting area 1 in the prime in filter bag district 5 and realize forward and backward two-stage dedusting, can collect a large amount of exhaust gas dusts by first, second grade two-stage electric field dedusting area 1,2, thereby reduced the dust concentration in the flue gas that enters filter bag district 5, therefore, reduce the load in filter bag district 5, improve efficiency of dust collection.Following specific embodiment is exactly the two-stage electric-bag complex dust collector, next specifies present embodiment in conjunction with Figure of description.
Improvement of the present invention is the layout of dedusting area, and other structures in addition are identical with existing design, therefore, in the following description, no longer carries out too much description to relating to dedusting area structure in addition.
Fig. 1 is the internal structure schematic diagram of a kind of preferred version of a kind of electric-bag complex dust collector described in the specific embodiment, and Fig. 2 is the A-A cutaway view shown in Fig. 1, and Fig. 3 is the C-C cutaway view shown in Fig. 1, and Fig. 4 is the B-B cutaway view shown in Fig. 1.
As shown in Figure 1, in this preferred technical scheme, be provided with the first electric field dedusting area 1, the second electric field dedusting area 2 and filter bag district 5 in the casing 4.The second electric field dedusting area 2 is positioned at the lower end in filter bag district 5.
The smoke air inlet 6 of flue gas 3 on casing 4 enters the first electric field dedusting area 1, after the first electric field dedusting area 1 preliminary purification (by the dust in the anode collection flue gas), enter electricity bag dedusting area 2,5, after 5 purifications of filter bag district, enter air-purifying chamber 7, discharge from flue 10 through poppet valve device 9 again, the flue gas of this moment has passed through the first electric field dedusting area 1 and electricity bag dedusting area 2,5 purification, and the dust in the flue gas greatly reduces, satisfied the requirement of discharge standard.Figure medium-height trestle 10 is used for supporting the casing 4 of deduster.
The flow direction of flue gas 3 in casing as shown by the arrows in Figure 1, a part of superposed flue gas 3 is from left to right by entering filter bag district 5 after the first electric field dedusting area 1, purifies through filter bag district 5 and enters air-purifying chamber 7 on backward; The flue gas 3 that another part is positioned at the bottom is from left to right by entering the second electric field dedusting area 2 after the first electric field dedusting area 1, purify through the second electric field dedusting area 2 and enter filter bag district 5 on backward, purified by filter bag district 5 and enters air-purifying chamber 7 on backward.
After flue gas 3 entered the first electric field dedusting area 1, the part dust was deposited on the positive plate 16 in the first electric field dedusting area, purified so flue gas 3 has been carried out for the first time.After purifying for the first time in electric field the flue gas of part directly enter filter bag district 5, in filter bag district 5, the dust in the flue gas is cleaned.
Again referring to Fig. 3, the figure shows the flue gas 3 that is positioned at the bottom through the dust removal process of the first electric field dedusting area 1 and the second electric field dedusting area 2, be provided with the electric field dust arrester in the first electric field dedusting area 1, the electric field dust arrester is comprised of cathodic discharge electrode wires and the positive plate of the setting of many groups parallel distance, by forming electric field between sparking electrode line 15 and the positive plate 16, then the dust in the flue gas 3 is deposited on the first electric field positive plate 16 by charged in this electric field.Similarly, also be provided with the electric field dust arrester of same structure in the second electric field dedusting area 2, form electric field between sparking electrode line 17 and the positive plate 18, then the dust in the flue gas is deposited on the second electric field positive plate 18 by charged in electric field.Flue gas after the first electric field dedusting area 1 and 2 purifications of the second electric field dedusting area upwards enters filter bag district 5.
Fig. 4 illustrates superposed flue gas 3 through the first electric field dedusting area 1 and the dust removal process that enters filter bag district 5.
In this specific embodiment, the structure of the soot cleaning system 12 in the anode rapping system in first, second electric field dedusting area 1,2 and the electricity bag dedusting area is identical with existing design with operation principle, when the dust of deposition on the filter bag 19 is too much, can carry out pulse jet (as shown in Figure 5) by 12 pairs of filter bags of soot cleaning system 19, make most of dust fall into ash bucket 13, wherein bag cage 20 plays the effect (asking simultaneously referring to Fig. 1, Fig. 2) of support and spacing filter bag; Another part fine solid particle can be entered in the ash bucket 13 dust releasing by anode rapping system because lightweight easy generation reentrainment of dust when they fall into the second electric field dedusting area 2, can blow and tell on positive plate 18.
A kind of electric-bag complex dust collector that this specific embodiment provides also has bypass valve device 14, as shown in Figure 1, when the filter bag in the electric-bag complex dust collector need to overhaul, open bypass valve device 14, close poppet valve device 8, make flue gas flow directly into bypass valve device 14 and flue 9 discharges from the first electric field dedusting area 1.In the case, flue gas 3 has only carried out electric precipitation through the first electric field dedusting area 1.This part-structure is identical with existing design, does not do too much introduction at this.
A kind of electric-bag complex dust collector preferred version provided by the invention comprises prime (upstream side) electric field dedusting area, filter bag district, rear class top, rear class bottom electric field dedusting area, compares with prior art to have following significant advantage:
(1) first electric field dedusting area and the second electric field dedusting area can be collected a large amount of dust, and then the dust concentration that has reduced to enter rear class filter bag district has improved efficiency of dust collection;
(2) smoke gas flow can strengthen the charged effect of dust when the second electric field dedusting area;
(3) the electric field dedusting area is adopted in the positive lower end of rear class, can effectively adsorb the fine dust that filter bag district, rear class upper end falls, and reduces reentrainment of dust, prolongs cleaning cycle, prolongs life of bag filter, reduces the dedusting overall resistance, improves the overall performance of deduster.
The above only is preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. an electric-bag complex dust collector comprises the composite dedusting district that is arranged in the casing, it is characterized in that, described composite dedusting district comprises:
Electricity bag dedusting area comprises filter bag district and the second electric field dedusting area; Be provided with the filter bag dust arrester in the filter bag district, be positioned at the upper end of described electricity bag dedusting area; Be provided with the electric field dust arrester in the second electric field dedusting area, and be communicated with and be positioned at the lower end of described electricity bag dedusting area with described filter bag district;
The first electric field dedusting area is provided with the electric field dust arrester in described the first electric field dedusting area, and described the first electric field dedusting area is positioned at the front end of described electricity bag dedusting area, and flue gas enters described electricity bag dedusting area from described the first electric field dedusting area.
2. a kind of electric-bag complex dust collector according to claim 1 is characterized in that, described the second electric field dedusting area comprises many group negative electrodes and anode:
Many group cathodic discharge electrode wires are arranged in parallel, and set gradually along the horizontal direction of flow of flue gas;
Many group plates are arranged in parallel, and set gradually along the horizontal direction of flow of flue gas.
3. a kind of electric-bag complex dust collector according to claim 1 is characterized in that, described filter bag dust arrester is specially many groups, organizes the filter bag dust arrester more and becomes ranks to arrange and be positioned at the upper end of the second electric field dedusting area.
4. each described a kind of electric-bag complex dust collector in 3 according to claim 1 is characterized in that, the filter bag length of described filter bag dust arrester is 6m to 10m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110272423 CN102327724B (en) | 2011-09-14 | 2011-09-14 | Electric-bag composite dust collector |
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| CN 201110272423 CN102327724B (en) | 2011-09-14 | 2011-09-14 | Electric-bag composite dust collector |
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| CN102327724A CN102327724A (en) | 2012-01-25 |
| CN102327724B true CN102327724B (en) | 2013-01-02 |
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Cited By (1)
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| CN104307299A (en) * | 2014-11-17 | 2015-01-28 | 福建龙净环保股份有限公司 | Operation optimization method and device for electrostatic composite dust collector |
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| CN103203156B (en) * | 2013-05-07 | 2015-12-23 | 福建东源环保有限公司 | A kind of embedded-type electric bag complex dust collector |
| CN103908862A (en) * | 2014-04-03 | 2014-07-09 | 江苏天洁环境工程有限公司 | Stacked type electrostatic fabric filter |
| CN104281068B (en) * | 2014-10-22 | 2016-03-30 | 福建龙净环保股份有限公司 | A kind of method based on WINCC platform monitoring electric-bag complex dust collector |
| CN104474827B (en) * | 2014-12-08 | 2016-05-04 | 陕西蔚蓝节能环境科技集团有限责任公司 | A kind of Novel electric bag composite dedusting method |
| CN105413380B (en) * | 2015-12-30 | 2018-10-19 | 宿迁龙净环保科技有限公司 | Through type electric-bag complex dust collector |
| CN106422635B (en) * | 2016-11-28 | 2019-01-22 | 玉环太平洋机械有限公司 | A kind of deduster |
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| CN107159466A (en) * | 2017-06-22 | 2017-09-15 | 浙江菲达环保科技股份有限公司 | A kind of composite metal net positive plate electric cleaner |
| CN112973304A (en) * | 2021-03-31 | 2021-06-18 | 广西合山虎鹰建材有限公司 | Dust remover for cement production |
| CN114602249A (en) * | 2022-03-08 | 2022-06-10 | 江苏理工学院 | Ash removal system of bag type dust collector |
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| CN102327724A (en) | 2012-01-25 |
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