CN103203156A - Embedded type electric bag compound dust remover - Google Patents
Embedded type electric bag compound dust remover Download PDFInfo
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- CN103203156A CN103203156A CN2013101641785A CN201310164178A CN103203156A CN 103203156 A CN103203156 A CN 103203156A CN 2013101641785 A CN2013101641785 A CN 2013101641785A CN 201310164178 A CN201310164178 A CN 201310164178A CN 103203156 A CN103203156 A CN 103203156A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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Abstract
The invention discloses an embedded type electric bag compound dust remover comprising a front-stage electric field dust-removing region and an embedded type electric bag compound dust removing region, which are sequentially arranged in a shell from front to back, wherein in the embedded type electric bag compound dust removing region, two sides of each piece of a back-stage corona electrode framework are provided with a dust-collecting pore plate or a rows of the dust-collecting pore plates; spaces between the two dust-collecting pore plates or the two rows of the dust-collecting pore plates are back-stage electric field channels; at least one filtering bag set comprising a row of filtering bags is arranged between any two adjacent back-stage electric field channels; and vent holes on the dust-collecting pore plates are air flow channels for smoke in the back-stage electric field channels to enter the filtering bag set. The height of the dust-collecting pore plates and the height of the corona electrode frameworks are commonly about 4 meters higher than the length of the filtering bags of the filtering bag set, so that a lot of dust, including falling dust when the dust in the filtering bags is removed, can be captured below the filtering bag set; and with adoption of a longer filtering bag dust removing period, the dust-removing efficiency of the dust remover can be further improved and the service life of the filtering bags can be prolonged.
Description
Technical field
The present invention relates to the industrial dedusting field, particularly relate to embedded electric-bag complex dust collector.
Background technology
In industries such as thermal power generation, building materials production and metallurgy, people's applicable industry deduster widely capture dust in flue gas, with the PM2.5 concentration in the reduction atmosphere, thereby improve atmosphere quality and protection health.At present, electric-bag complex dust collector is a kind of common used in industry deduster.In generation nineteen ninety, North Dakota university energy and environment research center (EERC) has developed embedded electricity bag composite dedusting technology, in order to avoid the most of reentrainment of dust that produces during any row's filter bag ash removal is by adjacent row's filter bag or self adsorb again.The patent inventor that Application No. is 09/813,497, name is called " Advanced hybrid particulate collector and method of operation " provides a kind of embedded electric-bag complex dust collector.The principal character of this deduster is: embed the orifice plate 4a that gathers dust that two rows have passage between two adjacent arbitrarily row's filter bag 6a, and gather dust this two row and to be provided with a row corona wire 51a between the orifice plate 4a, thereby form an embedded electricity bag composite dedusting district, see also Fig. 1.Described embedded electricity bag composite dedusting district comprises electric field dedusting area and filter bag dedusting area.Ash-laden gas is removed most of dust earlier in described electric field dedusting area, and then enters described filter bag dedusting area by the passage on the orifice plate 4a that gathers dust, and is then filtered by filter bag 6a.In embedded electricity bag composite dedusting district, the a part of reentrainment of dust that produces during because of described every row's filter bag 6a deashing, can both be captured by the described orifice plate 4a that gathers dust, so reduced the possibility that this class reentrainment of dust adheres again to just that row's filter bag 6a that is crossed by deashing widely, and a part of reentrainment of dust that described every row produces when gathering dust orifice plate 4a deashing, can be by that the row filter bag 6a absorption adjacent with the described orifice plate 4a that gathers dust; Enter the entrained charged dust of flue gas of described filter bag dedusting area in addition, by described filter bag 6a absorption fashion have the more quantity of electric charge (because of its move to filter bag 6a the distance of process shorter, so the quantity of electric charge that loses in transition process is less), make the dust layer that is deposited on filter bag 6a surface comparatively fluffy, thereby the filter bag filtration velocity allows up to 3.0m/min, so this embedded electric-bag complex dust collector has the efficiency of dust collection height, filter bag filtration velocity height, equipment volume is little, the advantage that the filter bag ash removal cycle is long and life of bag filter is long, see also " type selecting of electric cleaner is installed and operational management " book (multitude the time write, China Electric Power Publishing House, publish in June, 2005, the 135th to 136 page).
As shown in Figures 2 and 3, under the situation of deduster inlet flue gas parameter constant, annotate by setting up prime dust collection plate 7b(: do not have passage on the pole plate) and some corona wire 51b are set in each of setting up between to prime dust collection plate 7b, can increase the ratio dust-collecting area of embedded electric-bag complex dust collector, thereby improve the efficiency of dust collection of its electric field dedusting area and reduce the inlet flue gas dust content of its filter bag dedusting area; Then, we then can prolong the filter bag ash removal cycle.Like this, can reduce the Dust Capacity that passes filtrate because of filter bag ash removal on the one hand, thereby improve the efficiency of dust collection of embedded electric-bag complex dust collector, can also prolong life of bag filter on the other hand, see also the 71st～76 page in the master thesis that Xu Qing writes " the tight mixing dust removing technological development of electrostatic bag type and through engineering approaches design ".Need to prove that on every row was gathered dust orifice plate 4b, two adjacent arbitrarily gaps of gathering dust between the orifice plate 4b also entered the current path of described filter bag dedusting area for the flue gas after pre-dedusting.
As shown in Figure 2, because annotating at the 12 row's prime dust collection plate 7b(that set up: two rows respectively have four pole plate 7b, ten rows respectively have three pole plate 7b) between only be provided with six row's corona wire 51b(and annotate: every row has seven corona wire 51b), so the 12 row's prime dust collection plate 7b that set up can only gather dust by single face.In other words, the 12 row's prime dust collection plates 7 and the six row's corona wire 51b that set up have formed six prime electric field passages.This shows in described spaces between two row's prime dust collection plate 7b farthest, approximately to have only 55% spatial volume to be used to electrostatic precipitation.
In addition, increase along with this embedded electric-bag complex dust collector specification, described prime dust collection plate 7b height can reach 15 meters, and the filter bag 6b length in the described filter bag group is generally 6 meters to 9 meters, maximum length is 10 meters, describedly in addition gather dust orifice plate 4b height and described filter bag 6b length about equally, so the space between its embedded electricity bag composite dedusting district and its ash bucket is sizable.In this large space, corona discharge electrode neither is set dust collector pole is not set yet, cause the inlet flue gas dust content of described filter bag dedusting area to be significantly higher than when being provided with corona discharge electrode and dust collector pole, so must set the relatively shorter filter bag ash removal cycle, cause its efficiency of dust collection to descend then and the life of bag filter shortening.
By above-mentioned analysis as can be known, existing large-scale embedded electric-bag complex dust collector exists the lower shortcoming of space availability ratio.
Summary of the invention
The present invention's purpose provides a kind of space availability ratio than higher embedded electric-bag complex dust collector.This embedded electric-bag complex dust collector can reduce the inlet flue gas dust content of its filter bag dedusting area significantly, but so the proper extension filter bag ash removal cycle, with efficiency of dust collection, prolongation life of bag filter, the saving deashing energy consumption that improves this deduster and the operating cost that reduces this deduster.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of embedded electric-bag complex dust collector comprises housing (2) and from preceding prime electric field dedusting area and the embedded electricity bag composite dedusting district that then is successively set in the housing (2); Described prime electric field dedusting area comprises plural part prime corona discharge electrode framework (8) and plural part prime dust collection plate (7) or plural number row prime dust collection plate (7); Described embedded electricity bag composite dedusting district comprises back level electric field dedusting area and filter bag dedusting area; A described back level electric field dedusting area comprises behind the plural part level corona discharge electrode framework (5) and plural part orifice plate (4) or the plural number row orifice plate (4) that gathers dust that gathers dust, grade corona wire (51) after a level corona discharge electrode framework (5) is provided with some after described every; Described filter bag dedusting area comprises a plurality of filter bag groups; Level corona discharge electrode framework (5) both sides all are provided with the orifice plate that gathers dust (4) or and arrange the orifice plate (4) that gathers dust after described every, and the space that two orifice plates that gather dust (4) or two rows are gathered dust between the orifice plate (4) is level electric field passage after; Arbitrarily be provided with a filter bag group between the level electric field passage after adjacent two described, described each filter bag group comprises row's filter bag (6) at least; Described every row's filter bag (6) is parallel to or is arranged essentially parallel to described back level electric field passage; The passage that is arranged on the described orifice plate that gathers dust (4) is that the interior flue gas of described back level electric field passage enters the current path of described filter bag dedusting area; The described orifice plate that gathers dust (4) height and described back level corona wire (51) are bigger two meters than filter bag (6) length in the described filter bag group highly all at least, carry out electrostatic precipitation with the space that utilizes described filter bag group below.
Preferably, top and the middle part of the described orifice plate that gathers dust (4) all are provided with several passages, and passage is not then established in the described orifice plate that gathers dust (4) bottom, to increase the specific collection area of the described orifice plate that gathers dust (4).
Preferably, rounded or rectangle or triangle of described passage shape.
Preferably, described every row orifice plate (4) that gathers dust comprises two orifice plates that gather dust (4) at least; The windproof ditch side of the described orifice plate that gathers dust (4) is level corona discharge electrode framework (5) behind that adjacent with the described orifice plate that gathers dust (4) all, is beneficial to described each part orifice plate (4) that gathers dust and captures and enter the dust in the level electric field passage of described back and reduce reentrainment of dust.
Preferably, described gap between adjacent two orifice plates that gather dust (4) arbitrarily is more than or equal to 30mm; The partial fume at level electric field passage top, described back and middle part can enter described filter bag dedusting area by the gap between the described adjacent orifice plate that gathers dust (4).
Preferably, the straight portion in the middle of the described orifice plate that gathers dust (4) is provided with a tongue and groove at least, to strengthen the described orifice plate that gathers dust (4) rigidity.
Preferably, the described orifice plate that gathers dust (4) highly equals or close to described prime dust collection plate (7) highly, described back level corona wire (51) highly equal or close to be installed on the described prime corona discharge electrode framework (8) prime corona wire (81) highly, carry out electrostatic precipitation in order to take full advantage of the space of described filter bag group below.
Preferably, under the every row filter bag (6) adjacent with the described orifice plate that gathers dust, be provided with an auxiliary corona discharge electrode framework (26); Described every auxiliary corona discharge electrode framework (26) is provided with some auxiliary electrical hachures (261); Described auxiliary corona discharge electrode framework (26) is parallel to each other with described back level corona discharge electrode framework (5) and the described orifice plate that gathers dust (4), in order to utilize the described orifice plate that gathers dust (4) bottom to carry out two-sided gathering dust.
Preferably, described each filter bag group below all is provided with deep bead (25), to reduce the air-flow rate of climb of described filter bag dedusting area bottom; The cross section of described deep bead (25) is in-line or L font or V font.
Preferably, described prime electric field dedusting area and described back level electric field dedusting area all adopt high-frequency and high-voltage power supply.
In a kind of embedded electric-bag complex dust collector that the inventor provides, described orifice plate height and the described back level corona wire height of gathering dust is bigger two meters than the filter bag length in the described filter bag group all at least, carry out electrostatic precipitation (comprising the part dust that falls when capturing filter bag ash removal) with the space that utilizes described filter bag group below, thereby reduce the inlet flue gas dust content of described filter bag dedusting area.Because the inlet flue gas dust content of described filter bag dedusting area is greatly reduced, so but the proper extension filter bag ash removal cycle, with the efficiency of dust collection that improves this deduster, prolong life of bag filter, save the deashing energy consumption and reduce the operating cost of this deduster.
In addition, because most charged dust can come out from described back level electric field passage with air-flow, move to described filter bag surface the distance of process shorter, so these dust have more electric charge, and form more fluffy dust layer on the filter bag surface, greatly reduce flue gas by the resistance coefficient of filter bag, thereby can reduce wear rate and the dust pelletizing system resistance of filtrate, and allow to adopt higher filter bag filtration velocity.
In further embodiment, in a kind of embedded electric-bag complex dust collector that the inventor provides, described every row orifice plate that gathers dust comprises two orifice plates that gather dust at least; The windproof ditch side of the described orifice plate that gathers dust is level corona discharge electrode framework behind that adjacent with the described orifice plate that gathers dust all, is beneficial to described each part orifice plate that gathers dust and captures and enter the dust in the level electric field passage of described back and reduce reentrainment of dust.Therefore, we can prolong some filter bag ash removal cycles again, thus further improve this deduster efficiency of dust collection, prolong life of bag filter, save the deashing energy consumption and reduce the operating cost of this deduster.
Description of drawings
Fig. 1 is the schematic top plan view of the existing embedded electric-bag complex dust collector of a kind of typical case;
Fig. 2 is the schematic top plan view with embedded electric-bag complex dust collector of prime dust collection plate;
Fig. 3 is the structural representation of embedded electric-bag complex dust collector shown in Figure 2;
Fig. 4 is the structural representation of first embodiment of the invention;
Fig. 5 is the schematic top plan view of embedded electric-bag complex dust collector shown in Figure 4;
Fig. 6 for the A among Fig. 4 to view (removing the rapping apparatus of back level corona discharge electrode and two kinds of electrodes of back level dust collector pole);
Fig. 7 is the structural representation of back level corona discharge electrode framework in the first embodiment of the invention;
Fig. 8 is the structural representation of second embodiment of the invention;
Fig. 9 for the B among Fig. 8 to view (removing the rapping apparatus of back level corona discharge electrode and two kinds of electrodes of back level dust collector pole);
Figure 10 is the schematic cross-sectional view of the orifice plate bottom of gathering dust in the first embodiment of the invention;
Figure 11 is the round vent arrangement schematic diagram on the orifice plate that gathers dust in the first embodiment of the invention;
Figure 12 is a kind of passage shape schematic diagram on the orifice plate that gathers dust among the present invention;
Figure 13 is a kind of passage shape schematic diagram on the orifice plate that gathers dust among the present invention;
Figure 14 is a kind of passage shape schematic diagram on the orifice plate that gathers dust among the present invention;
Figure 15 is a kind of passage shape schematic diagram on the orifice plate that gathers dust among the present invention.
Each mark is represented among the figure:
Air inlet smoke box 1,1a, 1b; Housing 2,2a, 2b; V font deflector 3,3a, 3b, 3c; Orifice plate 4,4a, 4b gather dust; Back level corona discharge electrode framework 5; Back level corona wire 51; Corona discharge electrode framework 5a, 5b; Corona wire 51a, 51b; Filter bag 6,6a, 6b; Prime dust collection plate 7,7b; Prime corona discharge electrode framework 8; Prime corona wire 81; The anti-sway framework 9 of prime corona discharge electrode; Ash bucket 10; Spoiler 11; Air-purifying chamber 12; Exhaust pass 13; Filter bag ash removal device 14; Poppet valve device 15; Insulating sleeve 16; Insulator chamber 17; Housing back timber 18; Back level corona discharge electrode suspending rod 19; Back level corona discharge electrode hanging beam 20; The anti-sway framework 21 of back level corona discharge electrode; Back level corona discharge electrode top rapping anvil 22; Back level corona discharge electrode bottom rapping anvil 23; Back level dust collector pole rapping anvil 24; Deep bead 25; Auxiliary corona discharge electrode framework 26; Auxiliary electrical hachure 261; Auxiliary corona discharge electrode suspending rod 27; Auxiliary corona discharge electrode hanging beam 28; Auxiliary corona discharge electrode rapping anvil 29.
The specific embodiment
In order to make those skilled in the art understand the technical program better, the invention will be further described below in conjunction with drawings and Examples.
First embodiment
To shown in Figure 7, a kind of embedded electric-bag complex dust collector provided by the present invention comprises housing 2 and from the preceding prime electric field dedusting area housing 2 in, the embedded electricity bag composite dedusting district of then being successively set on as Fig. 4; A described prime electric field dedusting area high-frequency and high-voltage power supply of adapted (not shown), a cover prime dust collector pole rapping apparatus and a cover prime dust collector pole rapping apparatus; Described prime electric field dedusting area comprises 16 row's prime dust collection plate 7 and 15 prime corona discharge electrode frameworks 8 that are provided with prime corona wire 81, in order to prime dust collection plate 7 can two-sidedly be gathered dust, thereby significantly reduce the inlet flue gas dust content in described embedded electricity bag composite dedusting district.
The described two adjacent distances of arranging between the prime dust collection plates 7 are 400mm.Described every row's prime dust collection plate 7 comprises that eight height be that 7, eight prime dust collection plates 7 of prime dust collection plate of 14.5 meters divide equally are two groups, and every group is installed on the pole plate row.Described every prime corona discharge electrode framework 8 comprises two identical in structure prime corona discharge electrode small frames; Described every prime corona discharge electrode small frame is provided with eight prime corona wires 81; Height H because of prime corona wire 81
114.1 meters (H have been reached
1=14.1 meters), make prime corona wire 81 easily rock, flexible, so every prime corona wire 81 is divided into six sections and be installed on the described prime corona discharge electrode small frame; Described six sections prime corona wires are substantially on same plumb line.
Described embedded electricity bag composite dedusting district comprises back level electric field dedusting area and filter bag dedusting area.A described back level electric field dedusting area high-frequency and high-voltage power supply of adapted (not shown), a cover back level dust collector pole rapping apparatus and two cover back level corona discharge electrode rapping apparatus; Described back level electric field dedusting area comprises that 16 arrange gather dust orifice plate 4 and eight back level corona discharge electrode frameworks 5 that are provided with back level corona wire 51; Level corona discharge electrode framework 5 both sides all are provided with one and arrange the orifice plate 4 that gathers dust after every, and the space that described two rows are gathered dust between the orifice plate 4 is level electric field passage (annotate: channel width is 400mm) after; Arbitrarily be provided with a filter bag group between the level electric field passage after adjacent two described; The distance of gathering dust between the orifice plate 4 two rows of described each filter bag group both sides is 400mm; Described each filter bag group comprise a row have 16 long be that 10 meters, diameter are the filter bag 6 of 160mm; Described every row's filter bag 6 is parallel to or is arranged essentially parallel to described back level electric field passage; Passage on the described orifice plate 4 that gathers dust is that the flue gas in the level electric field passage of described back enters the current path of described filter bag dedusting area.
Described every row orifice plate 4 that gathers dust comprises that eight height are that 15.0 meters 4, eight of the orifice plates that the gather dust orifice plate 4 that gathers dust is installed on same the orifice plate row of gathering dust.Level dust collector pole rapping anvil 24 after described every the orifice plate row bottom of gathering dust is provided with one is in order to carry out vibration dust-cleaning by a cover back level dust collector pole rapping apparatus to the orifice plate 4 that gathers dust.In addition, by Figure 10 and Figure 11 as seen, the straight portion in the middle of the described orifice plate 4 that gathers dust also are provided with a tongue and groove, to strengthen described orifice plate 4 rigidity of gathering dust.
Level corona discharge electrode framework 5 is hung on back level corona discharge electrode hanging beam 20 behind described each part, and its underpart is connected with the back anti-sway framework 21 of level corona discharge electrode.Back level corona discharge electrode hanging beam 20 is connected with insulating sleeve 16 by back level corona discharge electrode overarm bar 19, back nut, supporting lid.
In fact, level corona discharge electrode framework 5 comprises two back level corona discharge electrode small frame and six coupling blocks that structure is roughly the same after described every; A level corona discharge electrode small frame respectively is provided with level corona wire 51 after the six roots of sensation after described two; Height H because of back level corona wire 51
214.4 meters (H have been reached
2=14.4 meters), make a back level corona wire 51 easily rock, flexible, so a level corona wire 51 is divided into six sections and be installed on grade corona discharge electrode small frame of described back after will every; The level corona wire is substantially on same plumb line after described six sections.Level corona discharge electrode small frame and six coupling blocks join together by welding after described two, level corona discharge electrode bottom rapping anvil 23 behind level corona discharge electrode top rapping anvil 22 and one after wherein a side of level corona discharge electrode small frame is provided with one after one is in order to carry out vibration dust-cleaning by two cover back level corona discharge electrode rapping apparatus to a back level corona discharge electrode framework 5.
The prime electric field dedusting area of flue gas in air inlet smoke box 1 enters housing 2.Because described prime dust collection plate 7 can two-sidedly gather dust, so flue gas can be removed most of dust in described prime electric field dedusting area.Then, under the guiding of V font deflector 3, the overwhelming majority is positioned at the flue gas at described prime electric field dedusting area top and middle part, directly rush in level electric field passage top, described back and middle part, then the most of dust in these flue gases is charged again in the level electric field dedusting area of described back, and some charged dust deposit is on gather dust orifice plate 4 or back level corona discharge electrode framework 5, all the other charged dust and not charged dust then with air-flow by the passage on the orifice plate 4 that gathers dust, enter the filter bag dedusting area that is provided with described seven filter bag groups; Perhaps earlier go out described embedded electricity bag dedusting area with air-flow, and then be folded to mobilely with air-flow, enter the top of described filter bag dedusting area at last.Small part is positioned at the flue gas at described prime electric field dedusting area top and middle part, then directly enters described filter bag dedusting area by described V font deflector 3 and described space of gathering dust between the orifice plate 4.Enter air-purifying chamber 12 through described filter bag 6 filtered smoke gas, discharge from exhaust pass 13 through poppet valve device 15 again, then be delayed on filter bag 6 surfaces in dust in flue gas originally.
After described prime electric field dedusting area is removed most of dust, under the guiding of V font deflector 3, the flue gas that the overwhelming majority is positioned at prime electric field dedusting area bottom directly pours level electric field passage bottom, described back, most of dust wherein are charged again in the level electric field dedusting area of described back, and some charged dust deposit is on gather dust orifice plate 4 or back level corona discharge electrode framework 5, all the other charged dust and not charged dust rise to described back level electric field channel middle and top with air-flow, then with air-flow by the passage on the orifice plate 4 that gathers dust, enter described filter bag dedusting area; Perhaps earlier go out described embedded electricity bag dedusting area with air-flow, and then be folded to air-flow and flow, directly enter or enter described filter bag dedusting area with air-flow by the passage on the orifice plate 4 that gathers dust at last.Small part is positioned at the flue gas of prime electric field dedusting area bottom, then by described V font deflector 3 bottoms and described space of gathering dust between orifice plate 4 bottoms, (annotate: the inlet channel both sides are provided with the orifice plate 4 that gathers dust to enter the inlet channel of described filter bag group below, but corona wire is not set) in the inlet channel, and then be folded to and flow, and enter described filter bag dedusting area by deep bead 25 and the space of gathering dust between the orifice plate 4.The each part mentioned above flue gas also enters air-purifying chamber 12 after described filter bag 6 filters, discharge from exhaust pass 13 through poppet valve device 15 again, and dust wherein then is delayed on filter bag 6 surfaces.
This deduster is after operation a period of time, when having adsorbed many dust and cause its running resistance to rise to a certain degree because of described filter bag 6, then must start filter bag ash removal device 14, makes these dust break away from described filter bag 6 surfaces.
Because of described orifice plate 4 height and the described back grade corona wire 51 of gathering dust bigger four meters than filter bag 6 length in the described filter bag group highly all at least, orifice plate 4 bottoms and level corona discharge electrode framework 5 bottoms, back can trap a large amount of dust from the flue gas of the described filter bag group below of flowing through so gather dust, the part dust that falls when comprising filter bag ash removal enters the inlet flue gas dust content of described filter bag dedusting area thereby reduce significantly; And then the proper extension filter bag ash removal cycle, then can improve this deduster efficiency of dust collection, prolong life of bag filter, save the deashing energy consumption and reduce the operating cost of this deduster.
In addition, because most charged dust can come out from described back level electric field passage with air-flow, move to described filter bag 6 surfaces the distance of process shorter, so these dust have more electric charge, and form more fluffy dust layer on filter bag 6 surfaces, greatly reduce flue gas by the resistance coefficient of filter bag 6, thereby can reduce wear rate and the dust pelletizing system resistance of filtrate, and allow to adopt higher filter bag filtration velocity.
That is worth mentioning has 3 points, and the one, top and the middle part of the described orifice plate 4 that gathers dust all are provided with several passages, and passage is not then established in described orifice plate 4 bottoms of gathering dust, and to increase the specific collection area of the described orifice plate 4 that gathers dust, sees also Fig. 4.Symbol for dimensioning h among Fig. 4 is the opening area height of the described orifice plate 4 that gathers dust; Described opening area height h is generally 0.6 times to 0.8 times of described orifice plate 4 height that gather dust.The 2nd, on described every orifice plate row of gathering dust eight all level corona discharge electrode frameworks 5 behind that adjacent with described eight orifice plates 4 of gathering dust of orifice plate 4 windproof ditch sides that gather dust are beneficial to described eight orifice plates 4 that gather dust and capture and enter the dust in the level electric field passage of described back and reduce reentrainment of dust.The 3rd, described each filter bag group below all is provided with deep bead 25, to reduce the air-flow rate of climb of described filter bag dedusting area bottom; The cross section of described deep bead 25 is in-line; Certainly, the cross section of described deep bead 25 also can change into and be L font or V font.
By above-mentioned analysis as can be known, this embedded electric-bag complex dust collector provided by the present invention, the characteristics that not only have filter bag filtration velocity height, can gather dust below described filter bag group all in gather dust orifice plate 4 bottoms and back level corona discharge electrode framework 5 bottoms, but also have the advantage that reentrainment of dust is few, the filter bag ash removal cycle is long, efficiency of dust collection is high, life of bag filter is long and operating cost is low.
In addition, need explanation 3 points, the one, be in described back outermost that two row of level electric field dedusting area orifice plate 4 that gathers dust and can be replaced by the dust collection plate that two rows do not establish passage, to increase the specific collection area of described back level electric field dedusting area.The 2nd, on described every row was gathered dust orifice plate 4, adjacent two gaps of gathering dust between the orifice plate 4 equaled 30mm arbitrarily; The partial fume that flows to level electric field passage top, described back and middle part can enter described filter bag dedusting area by these gaps; And, in order suitably to increase the specific collection area of the described orifice plate 4 that gathers dust, described adjacent two gaps of gathering dust between the orifice plate 4 can be extended to 60～80mm even reach more than the 100mm, the percent opening of the described orifice plate 4 that gathers dust is also correspondingly reduced simultaneously, even be reduced to zero, and namely the described orifice plate 4 that gathers dust has in fact become---do not establish the dust collection plate of passage.When the dust collection plate of not established passage when the described orifice plate 4 that gathers dust substitutes, flowing to the flue gas at level electric field passage top, described back and middle part, mainly is to enter described filter bag dedusting area by the gap between described adjacent two dust collection plates.
Second embodiment
Further, under every row's filter bag 6 in first embodiment, an auxiliary corona discharge electrode framework 26 that is provided with 14 auxiliary electrical hachures 261 is set all again, make every row gather dust the both sides of orifice plate 4 bottoms be respectively arranged with parallel to each other one after level corona discharge electrode framework 5 and an auxiliary corona discharge electrode framework 26, carry out two-sided gathering dust in order to utilize these orifice plate 4 bottoms of gathering dust, thereby further reduce the inlet flue gas dust content of described filter bag dedusting area, see also Fig. 8 and Fig. 9; And then prolong some filter bag ash removal cycles, then can further improve this deduster efficiency of dust collection, prolong life of bag filter, save the deashing energy consumption and reduce the operating cost of this deduster.
As Fig. 8 and shown in Figure 9, a side of described every auxiliary corona discharge electrode framework 26 is provided with an auxiliary corona discharge electrode rapping anvil 29, in order to by a cover back level corona discharge electrode rapping apparatus auxiliary corona discharge electrode framework 26 is carried out vibration dust-cleaning.The auxiliary corona discharge electrode framework 26 of each part is hung on auxiliary corona discharge electrode hanging beam 28, auxiliary corona discharge electrode hanging beam 28 is suspended on the back level corona discharge electrode hanging beam 20 by auxiliary corona discharge electrode suspending rod 27 again, and auxiliary corona discharge electrode framework 26 bottoms of each part all are connected with the back anti-sway framework 21 of level corona discharge electrode.
It should be noted that end is only a little low than filter bag 6 bottoms in the described filter bag group under the V font deflector 3c among second embodiment, directly pour level electric field passage bottom, described back in order to be positioned at the flue gas of prime electric field dedusting area bottom.
In addition, need explanation 2 points, the one, in order to improve the smoke treatment ability of embedded electric-bag complex dust collector provided by the present invention, embedded electricity bag rear, composite dedusting district that can be in the present invention, set up an embedded electricity bag composite dedusting district, and between two embedded electricity bag composite dedusting districts, an internal overhaul aisle is set; Level electric field each adapted of dedusting area high-frequency and high-voltage power supply after two, after perhaps by lead the back level corona discharge electrode in the level electric field dedusting area after two being linked together, a level electric field dedusting area shares a high-frequency and high-voltage power supply after two.Certainly, should increase the length of housing 2 and increase some parts simultaneously.The 2nd, the orifice plate that gathers dust among the present invention is to become after the definite shape by mill milling, for example rolls into C shape pole plate, and perhaps BE type pole plate or ZT shape pole plate are offered passage at pole plate top and middle part again and made.
The undeclared part of other that relates among the present invention is same as the prior art.
Claims (10)
1. embedded electric-bag complex dust collector comprises housing (2) and from preceding prime electric field dedusting area and the embedded electricity bag composite dedusting district that then is successively set in the housing (2); Described prime electric field dedusting area comprises plural part prime corona discharge electrode framework (8) and plural part prime dust collection plate (7) or plural number row prime dust collection plate (7); Described embedded electricity bag composite dedusting district comprises back level electric field dedusting area and filter bag dedusting area; A described back level electric field dedusting area comprises behind the plural part level corona discharge electrode framework (5) and plural part orifice plate (4) or the plural number row orifice plate (4) that gathers dust that gathers dust, grade corona wire (51) after a level corona discharge electrode framework (5) is provided with some after described every; Described filter bag dedusting area comprises a plurality of filter bag groups; Level corona discharge electrode framework (5) both sides all are provided with the orifice plate that gathers dust (4) or and arrange the orifice plate (4) that gathers dust after described every, and the space that two orifice plates that gather dust (4) or two rows are gathered dust between the orifice plate (4) is level electric field passage after; Arbitrarily be provided with a filter bag group between the level electric field passage after adjacent two described, described each filter bag group comprises row's filter bag (6) at least; Described every row's filter bag (6) is parallel to or is arranged essentially parallel to described back level electric field passage; The passage that is arranged on the described orifice plate that gathers dust (4) is that the interior flue gas of described back level electric field passage enters the current path of described filter bag dedusting area, it is characterized in that: the described orifice plate that gathers dust (4) height and described back level corona wire (51) are bigger two meters than filter bag (6) length in the described filter bag group highly all at least, carry out electrostatic precipitation with the space that utilizes described filter bag group below.
2. embedded electric-bag complex dust collector according to claim 1, it is characterized in that: top and the middle part of the described orifice plate that gathers dust (4) all are provided with several passages, passage is not then established in the described orifice plate that gathers dust (4) bottom, to increase the specific collection area of the described orifice plate that gathers dust (4).
3. embedded electric-bag complex dust collector according to claim 2 is characterized in that: described passage shape rounded or rectangle or triangle.
4. embedded electric-bag complex dust collector according to claim 1 is characterized in that: described every row orifice plate (4) that gathers dust comprises two orifice plates that gather dust (4) at least; The windproof ditch side of the described orifice plate that gathers dust (4) is level corona discharge electrode framework (5) behind that adjacent with the described orifice plate that gathers dust (4) all, is beneficial to described each part orifice plate (4) that gathers dust and captures and enter the dust in the level electric field passage of described back and reduce reentrainment of dust.
5. embedded electric-bag complex dust collector according to claim 4 is characterized in that: described gap between adjacent two orifice plates that gather dust (4) arbitrarily is more than or equal to 30mm; The partial fume at level electric field passage top, described back and middle part can enter described filter bag dedusting area by the gap between described adjacent two orifice plates that gather dust (4).
6. embedded electric-bag complex dust collector according to claim 4 is characterized in that: the straight portion in the middle of the described orifice plate that gathers dust (4) is provided with a tongue and groove at least, to strengthen the described orifice plate that gathers dust (4) rigidity.
7. embedded electric-bag complex dust collector according to claim 4, it is characterized in that: the described orifice plate that gathers dust (4) highly equals or close to described prime dust collection plate (7) highly, described back level corona wire (51) highly equal or close to be installed on the described prime corona discharge electrode framework (8) prime corona wire (81) highly, carry out electrostatic precipitation in order to take full advantage of the space of described filter bag group below.
8. according to the embedded electric-bag complex dust collector described in the claim 1, it is characterized in that: under the every row filter bag (6) adjacent with the described orifice plate that gathers dust (4), be provided with an auxiliary corona discharge electrode framework (26); Described every auxiliary corona discharge electrode framework (26) is provided with some auxiliary electrical hachures (261); Described auxiliary corona discharge electrode framework (26) is parallel to each other with described back level corona discharge electrode framework (5) and the described orifice plate that gathers dust (4), in order to utilize the described orifice plate that gathers dust (4) bottom to carry out two-sided gathering dust.
9. embedded electric-bag complex dust collector according to claim 1 is characterized in that: all be provided with deep bead (25) below described each filter bag group, to reduce the air-flow rate of climb of described filter bag dedusting area bottom; The cross section of described deep bead (25) is in-line or L font or V font.
10. embedded electric-bag complex dust collector according to claim 1 is characterized in that: described prime electric field dedusting area and a described back level electric field dedusting area all adopt high-frequency and high-voltage power supply.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310164178.5A CN103203156B (en) | 2013-05-07 | 2013-05-07 | A kind of embedded-type electric bag complex dust collector |
| PCT/CN2014/076862 WO2016029333A1 (en) | 2013-05-07 | 2014-05-06 | Embedded-type electrified bag composite dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310164178.5A CN103203156B (en) | 2013-05-07 | 2013-05-07 | A kind of embedded-type electric bag complex dust collector |
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| Publication Number | Publication Date |
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| CN103203156A true CN103203156A (en) | 2013-07-17 |
| CN103203156B CN103203156B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310164178.5A Expired - Fee Related CN103203156B (en) | 2013-05-07 | 2013-05-07 | A kind of embedded-type electric bag complex dust collector |
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| Country | Link |
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| CN (1) | CN103203156B (en) |
| WO (1) | WO2016029333A1 (en) |
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| 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 |
| CN105013612A (en) * | 2014-04-21 | 2015-11-04 | 红安金源科技环保设备有限公司 | Lateral bag type module electrostatic dust collector |
| CN105214845A (en) * | 2015-11-12 | 2016-01-06 | 解标 | A kind of dust arrester installation of electric cleaner uprush direction |
| CN105251616A (en) * | 2015-11-12 | 2016-01-20 | 解标 | Fixed-wing groove type dust collection plate of dust suppression device in vertical airflow direction of electric precipitator |
| WO2016029333A1 (en) * | 2013-05-07 | 2016-03-03 | 福建东源环保有限公司 | Embedded-type electrified bag composite dust collector |
| CN105983288A (en) * | 2015-02-13 | 2016-10-05 | 台达电子工业股份有限公司 | Dust collecting apparatus, and projection apparatus suitable for dust collecting apparatus |
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| WO2016029333A1 (en) * | 2013-05-07 | 2016-03-03 | 福建东源环保有限公司 | Embedded-type electrified bag composite 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 |
| CN105013612A (en) * | 2014-04-21 | 2015-11-04 | 红安金源科技环保设备有限公司 | Lateral bag type module electrostatic dust collector |
| CN105983288A (en) * | 2015-02-13 | 2016-10-05 | 台达电子工业股份有限公司 | Dust collecting apparatus, and projection apparatus suitable for dust collecting apparatus |
| CN105214845A (en) * | 2015-11-12 | 2016-01-06 | 解标 | A kind of dust arrester installation of electric cleaner uprush direction |
| CN105251616A (en) * | 2015-11-12 | 2016-01-20 | 解标 | Fixed-wing groove type dust collection plate of dust suppression device in vertical airflow direction of electric precipitator |
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| CN106269258A (en) * | 2016-08-29 | 2017-01-04 | 四川环翔科技有限责任公司 | A kind of air purification method based on electro static filtering |
| CN106583045A (en) * | 2017-01-04 | 2017-04-26 | 安徽意义环保设备有限公司 | Filtration type electric dust remover |
| CN108787168A (en) * | 2018-07-05 | 2018-11-13 | 中国华电科工集团有限公司 | A kind of electric precipitator with heat exchange function |
| CN113275125A (en) * | 2021-05-19 | 2021-08-20 | 扬州大学 | Electrostatic dust collector and breakdown prevention device and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016029333A1 (en) | 2016-03-03 |
| CN103203156B (en) | 2015-12-23 |
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