CN101028576A - Assembled electric bag dust collector - Google Patents
Assembled electric bag dust collector Download PDFInfo
- Publication number
- CN101028576A CN101028576A CN 200610170262 CN200610170262A CN101028576A CN 101028576 A CN101028576 A CN 101028576A CN 200610170262 CN200610170262 CN 200610170262 CN 200610170262 A CN200610170262 A CN 200610170262A CN 101028576 A CN101028576 A CN 101028576A
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- bag
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- dust
- flue gas
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Abstract
A combined duster is composed of electric duster, cloth-bag duster, fume case at inlet, cathode-anode unit of electric duster, guide bulkhead between said electric duster and cloth-bag duster for guiding and distributing airflow, cloth bag with skeleton, fume flue partition with fume switching valve cooperating with a temp sensor in flue for directly exhausting fume in chimney when the temp is too high to prevent the cloth bag from bunt, ash hopper, high-voltage electric unit, ash removing system for cloth bag, and fume outlet.
Description
Technical field
The utility model relates to a kind of device that dusty gas is carried out udst separation, specifically is the combined duster with electrostatic precipitator and sack cleaner combination.Be applied to the flue gas ash removal of industries such as power station, metallurgy, iron and steel, nonferrous smelting, building materials, chemical industry.
Background technology
Along with the development of country, the raising of people's lives, new environmental emission standard is brought up to 50mg/Nm
3, and the type society that advocates thriftiness of country, Green GDP increases.Build garden type, environmental modernization inhabitation and working environment, become the target of new round city, rural area, factories and miness construction.Electric cleaner and sack cleaner are two kinds of capital equipments of present industrial flue gas cleaning, and they all successfully are applied to industries such as electric power, building materials, chemical industry and metallurgical industry.But, no matter be the deficiency that electric precipitation and bag-type dust all have self.
Electrostatic precipitator is to utilize the highfield corona discharge to make gas ionization, dust charged, under the electric field force effect dust is separated from gas.Be characterized in: the deduster body pressure loss is little, and (generally＜300Pa), high temperature resistant, common iron can be in operation below 350 ℃.The efficiency of dust collection height of first electric field generally can reach 70-80%, and particularly thick the and dust more moderate than resistance to particle diameter has very high efficiency of dust collection, and all the other electric fields are only collected the 10-20% of dustiness.Electrostatic precipitator is responsive to the characteristic of dust simultaneously, and suitable ratio resistance is 1 * 10
4--5 * 10
10Ω cm, efficient is subjected to the influence of flue gas working condition factor easily and changes.
Sack cleaner also claims filtration dust catcher, and it is that the bag shape filter element that utilizes fibrous braid to make captures the solid particulate matter in the dusty gas, and its feature: the efficiency of dust collection height, the outlet discharging is stable, and is general≤50mg/Nm
3Concentration of emission is insensitive to the characteristic of dust, is not subjected to the influence of dust specific resistance.Cleaning cycle, life of bag filter are subjected to the exhaust gas dust concentration affects big, and dust concentration is high more, and deashing time and life of bag filter are short more.Running resistance is big, is generally 1500-2000Pa, the operating cost height.Be not suitable for moving under the condition of high temperature, generally at 160～200 ℃.
Summary of the invention
Be that the present invention is by combining a kind of assembled electric bag dust collector of composition with electric cleaner and sack cleaner are organic.She combines electric cleaner and sack cleaner advantage separately, the efficiency of dust collection height, and resistance of the filter bag is low, the life-span is long, can satisfy high standard discharging (≤50mg/Nm
3), adapt to the condition of various working conditions change.And equipment investment is little, operating cost is low, floor space is little.
Assembled electric bag dust collector of the present invention is composed in series by electric cleaner and sack cleaner.Electric cleaner and sack cleaner form a whole in a housing.Each several part is formed: diaphragm, cloth bag and skeleton between import smoke box, electric precipitation anode and cathode part, electric precipitation and bag-type dust, be arranged on buffler, ash bucket, lift valve, cloth bag soot cleaning system, exhanst gas outlet in the bag-type dust.
Described electric precipitation anode and cathode adopts side arm sinker, and ash-removal effect is good, and discharge electrode adopts BS type prickle wire, and current density is big;
Diaphragm between described electric precipitation and bag-type dust is made up of deflector and dividing plate, plays the effect of water conservancy diversion and uniform air-flow;
Described flue gas buffler plays the effect of water conservancy diversion and uniform air-flow equally;
At the described flue gas transfer valve that in the flue gas buffler, is provided with, this transfer valve detector unit interior with being arranged on the deduster inlet flue duct matches, and can open transfer valve automatically when flue-gas temperature is too high, flue gas is entered chimney, prevent that the situation of burning bag and sticking with paste bag from taking place.
Have in flue gas in addition under oil smoke or other failure conditions, this transfer valve can make flue gas directly enter chimney.
The bottom and the top of the dirt pocket of being made up of cloth bag and skeleton are equipped with lift valve, can realize the function of off-line ash-clearing and on-bne repair.
When certain dirt pocket needed deashing, dirt pocket top lift valve cut out automatically, implemented pulse dust cleaning behind the cut-out flue gas, and lift valve was opened automatically after deashing finished, and finished the off-line ash-clearing process.When certain dirt pocket breaks down the need on-line maintenance; dirt pocket upper and lower lift valve cuts out simultaneously, makes dirt pocket be in closed state, opens dirt pocket top access door then and implements maintenance; open dirt pocket upper and lower lift valve after maintenance finishes, finish the on-bne repair process.
Described cloth bag soot cleaning system adopts the action of low-voltage pulse deashing device, and the ash that dedusting is got off is discharged through ash bucket, and flue gas after being purified enters chimney through the deduster rear lateral portion.
The dust-cleaning principle of assembled electric bag dust collector: flue dust is earlier through the prime electric cleaner, its efficiency of dust collection and pole plate effective area are exponential curve to be changed, can collect most of dust in the flue dust, dust-collecting efficiency reaches 70-80%, and the fine dust ionization that not being collected of this electric field of flowing through got off is charged.The back level is provided with sack cleaner, makes the low and pre-charged flue gas of dust content be collected by filter bag, reaches concentration of emission≤50mg/Nm
3, even≤30mg/Nm
3Environmental requirement.
Charged dust in the flue gas has following effect: (1) diffusion.Because dust has like charges, thereby repulsion forms equally distributed aerosol suspension state rapidly in the diffusion of the space of back level mutually, and the concentration of feasible each chamber of level cloth bag, back of flowing through is even, and flow velocity is even.(2) absorption and repulsive interaction.Because electric charging effect is accelerated dust deposition velocity on filter bag, and the dust that has an identical polar repels mutually, make and arrange in order between the dust granules that deposits to the filter bag surface, and the dust layer good permeability of formation, the voidage height, spalling is good.So assembled electric bag dust collector utilizes electric charging effect to reduce the resistance of deduster, improve cleaning efficiency, thereby the overall performance of equipment is improved.
The course of work is: flue gas to be clean enters the anode and cathode part of prime electric precipitation by the import smoke box, enter the bag-type dust part through the flue gas behind the electric precipitation by the diaphragm between electric precipitation and bag-type dust, diaphragm plays the effect of water conservancy diversion and uniform air-flow; The flue gas buffler is set in the middle of bag-type dust, and air-flow flows into the dirt pocket that is made of cloth bag and skeleton through uniform back from the bottom, and the bottom and the top of dirt pocket are equipped with lift valve, can realize the function of off-line ash-clearing and on-bne repair; Be provided with the flue gas transfer valve in the flue gas buffler, the detector unit in this transfer valve and the flue matches, and can automatically flue gas be entered chimney when flue-gas temperature is too high, prevents that the situation of burning bag and sticking with paste bag from taking place.This transfer valve also is used at the oil smoke of flue gas making flue gas directly enter chimney under too high or other failure conditions in addition.
The beneficial effects of the utility model:
(1) by slowly entering back level sack cleaner behind the prime electric precipitation again, the prime electric precipitation captures the exhaust gas dust of 70-80% to flue gas earlier, and the Dust Capacity that back level filter bag captures only has 1/4 of conventional bag-type dust.The dust load amount of back level filter bag reduces greatly like this, and cleaning cycle is prolonged significantly; Dust is charged through the ionization of prime electric field, and electric charging effect has improved the filtering feature of dust on filter bag, and the permeability of filter bag, deashing property aspect are much improved.Reach and fully rationally utilize electric cleaner and sack cleaner advantage separately, and both combine and produce new function.
(2) the dust load amount of filter bag is little, and the electric charging effect effect, and the filtration velocity of assembled electric bag dust collector is in-line can be brought up to more than the 1.5m/min, and this moment, filter bag also still kept lower resistance.Thereby significantly reduce the filter bag filter area, save the investment of equipment, reduce the deduster floor space.
(3) owing to the effect of electric charging effect, the dust layer that filter bag forms is little to the resistance of air-flow, is easy to deashing, and deduster can keep lower running resistance in running, for example＜and 1000Pa.
(4) because the dust collection of prime electric precipitation handle most of (70-80%), this part dust granules thick (diameter is big), momentum is big, wear-out failure intensity to filter bag is big, remaining dust concentration is low, particle is thin, and electric charging effect and each chamber inlet space of back level filter bag are big, the dust speed that enters each chamber low (＜1m/s), can avoid the erosion damage of dust to filter bag.
(5) assembled electric bag dust collector is compared with conventional sack cleaner, and the Dust Capacity of identical filter bag area deposition is few in the unit interval, and the cleaning cycle of filter bag can be more than 2 times of routine.Prolonged the service life of filter bag.Because the dust deashing is easy, in actual motion, can adopt the online ash removal mode, reduce filter bag air cloth ratio undulate quantity, thereby prolong filtrate service life.Because it is low that the strainability of filter bag moves resistance well, the intensity load of filter bag is little, thereby prolongs filtrate service life.
(6) bag in the deduster gathers dust and accounts for the most of cost of deduster, reduce bag gather dust part cost and prolong the replacing maintenance cost that can reduce filter bag service life of filter bag; Reduce the power consumption expense that running resistance can be saved blower fan; Cleaning cycle length can be saved compressed air consumption, and therefore operation, the maintenance cost of electricity bag combined dust remover are significantly less than pure sack cleaner.
(7) efficiency of dust collection of assembled electric bag dust collector is not subjected to coal, flue gas operating mode, flying dust properties influence, and concentration of emission is can be for a long time efficient, be stabilized in 50mg/Nm
3(even 30mg/Nm
3).
(8) assembled electric bag dust collector can realize that off-line ash-clearing, the online bag that changes overhaul.Under the high situation of flue-gas temperature, the valve that can automatically switch switches to bypass with high-temperature flue gas, prevents to burn bag.In flue gas, have under the situation of oil smoke, also can manually switch to bypass.
Description of drawings
Fig. 1 is the structural representation of assembled electric bag dust collector.
1 import smoke box among the figure, 2 electric precipitation anode and cathode parts, diaphragm between 3 electric precipitations and bag-type dust, 4 cloth bags and skeleton, 5 flue gas bufflers, 6 ash buckets, 7 lift valves, 8 cloth bag soot cleaning systems, 9 housings, 10 exhanst gas outlets.
The specific embodiment
Below in conjunction with accompanying drawing, the structure of the present utility model and the course of work are described in detail.
Need to purify flue gas and enter prime electric precipitation anode and cathode part 2 by import smoke box 1, the electric precipitation anode and cathode adopts side arm sinker, and ash-removal effect is good, and discharge electrode adopts BS type prickle wire, and current density is big.Diaphragm 3 enters bag-type dust removal system between the flue gas behind the electric precipitation is by electric precipitation and bag-type dust, and diaphragm is made up of deflector and dividing plate, plays the effect of water conservancy diversion and uniform air-flow; Flue gas buffler 5 is set in bag-type dust, and air-flow flows into the dirt pocket that is made of cloth bag and skeleton 4 from the bottom after uniform, and the bottom of dirt pocket and top are equipped with lift valve 7, can realize the function of off-line ash-clearing and on-bne repair; In flue gas buffler 5, be provided with the flue gas transfer valve, can be in flue-gas temperature too high and have under the situation of oil smoke and make flue gas directly enter chimney, prevent that the situation of burning bag and sticking with paste bag from taking place; Cloth bag soot cleaning system 8 adopts the action of low-voltage pulse deashing device; The ash that dedusting is got off is discharged through ash bucket 6; Flue gas after being purified enters chimney through the exhanst gas outlet 10 of deduster rear lateral portion.
Embodiment 1
Former design has the CFBB of 3 75t/h burning coal slime-middle coals, supporting 3 single chambers, the four electric field electrostatic precipitator of dust pelletizing system in our company's thermo-power station device.For guaranteeing dust removing effects≤50mg/Nm
3Determine the electrostatic precipitator that former No. 3 boilers are supporting to change, adopt the assembled electric bag dedusting technology.The deduster first order adopts electric precipitation, second and third, level Four adopts bag-type dust, two, three, the level Four bag-type dust is cascaded.
(1) deduster entrance flue gas temperature: normal: 135～155 ℃, maximum :～200 ℃;
(2) specified exhaust gas volumn :～205177m
3/ h;
(3) maximum exhaust gas volumn :～226000m
3/ h;
(4) cloth bag diameter: φ 130mm, the long 6000mm of bag;
(5) filter bag is the PPS+PTFE overlay film;
(6) deashing air pressure: 0.25～0.3Mpa;
(7) the sack cleaner number of chambers is: 12;
(8) purge mode both be designed to can " online " also can " off-line ", pulse jet line by line;
(9) dust pelletizing system is provided with bypass duct, is the internally-arranged type bypath system.Inlet flue duct place at deduster is provided with the flue-gas temperature on-line measuring device, and is too high or too low when flue-gas temperature, surpasses when presetting alarming value, opens bypath system Valved discharge flue gas automatically, the protection filter bag.
This assembled electric bag dust collector resistance＜1000Pa, deduster outlet concentration of emission is less than 50mg/Nm
3
Claims (3)
1. assembled electric bag dust collector, be composed in series by electric cleaner and sack cleaner, electric cleaner and sack cleaner form a whole in a housing, dusty gas is entered by electric cleaner import smoke box, purified gas is sent from the sack cleaner rear lateral portion, it is characterized in that the each several part composition is: diaphragm, cloth bag and skeleton, flue gas buffler, ash bucket, lift valve, cloth bag soot cleaning system, exhanst gas outlet between import smoke box, electric precipitation anode and cathode part, electric precipitation and bag-type dust;
The anode and cathode of described electric precipitation part adopts side arm sinker;
Between electric precipitation and bag-type dust, diaphragm is set, forms, play the effect of water conservancy diversion and uniform air-flow by deflector and dividing plate;
In the middle of bag-type dust, the flue gas buffler is set, plays the effect of water conservancy diversion and uniform air-flow equally; Described cloth bag and skeleton have constituted dirt pocket, are equipped with lift valve on the bottom and the top of dirt pocket, can realize the function of off-line ash-clearing and on-bne repair.
2. according to the assembled electric bag dust collector of claim 1, it is characterized in that described cloth bag soot cleaning system adopts the action of low-voltage pulse deashing device.
3. according to the assembled electric bag dust collector of claim 1, it is characterized in that, in the flue gas buffler, be provided with the flue gas transfer valve, this transfer valve matches with the detector unit that is arranged in the deduster inlet flue duct, and it is too high and have under the situation of oil smoke and make flue gas directly enter chimney to be implemented in flue-gas temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610170262 CN101028576A (en) | 2006-12-26 | 2006-12-26 | Assembled electric bag dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610170262 CN101028576A (en) | 2006-12-26 | 2006-12-26 | Assembled electric bag dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101028576A true CN101028576A (en) | 2007-09-05 |
Family
ID=38714233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610170262 Pending CN101028576A (en) | 2006-12-26 | 2006-12-26 | Assembled electric bag dust collector |
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|---|---|
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102091491A (en) * | 2010-12-03 | 2011-06-15 | 江苏中科节能环保技术有限公司 | Electro-bag compound dust remover realizing thorough offline dust removal |
| CN101664616B (en) * | 2009-09-04 | 2011-12-07 | 谭鼎昌 | Alkali recovery boiler pulse spay-blow purifying and dedusting system with various black liquid processing abilities |
| CN102363090A (en) * | 2011-09-16 | 2012-02-29 | 中冶南方工程技术有限公司 | Automatic control method for small-sized bag type dust remover |
| CN102430309A (en) * | 2011-10-23 | 2012-05-02 | 中冶焦耐(大连)工程技术有限公司 | Device for recovering fine-particle coal |
| CN102430310A (en) * | 2011-10-23 | 2012-05-02 | 中冶焦耐(大连)工程技术有限公司 | Method for recycling fine coal particles |
| CN102814097A (en) * | 2012-09-18 | 2012-12-12 | 辽宁调兵山煤矸石发电有限责任公司 | Tandem-type static electricity-cloth bag composite dust collector |
| CN103357232A (en) * | 2013-06-20 | 2013-10-23 | 江苏亿金环保科技股份有限公司 | Electrostatic fabric filter with complete offline function |
| CN103463921A (en) * | 2013-10-10 | 2013-12-25 | 福建龙净环保股份有限公司 | Electric bag dust collector |
| CN104162335A (en) * | 2014-08-22 | 2014-11-26 | 成都代代吉前瞻科技股份有限公司 | Novel efficient electricity and bag combined dust collector |
| 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 |
| CN105363288A (en) * | 2015-11-25 | 2016-03-02 | 吕珩 | Mixed dust removal device |
| CN105477968A (en) * | 2016-01-04 | 2016-04-13 | 曾星 | Electricity and bag integrated dust collector |
| CN106268102A (en) * | 2016-08-31 | 2017-01-04 | 天津市鸿远电气股份有限公司 | Sack cleaner |
| CN106925063A (en) * | 2015-12-31 | 2017-07-07 | 同方环境股份有限公司 | A kind of electrostatic fabric filter for removing PM2.5 |
-
2006
- 2006-12-26 CN CN 200610170262 patent/CN101028576A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101664616B (en) * | 2009-09-04 | 2011-12-07 | 谭鼎昌 | Alkali recovery boiler pulse spay-blow purifying and dedusting system with various black liquid processing abilities |
| CN102091491B (en) * | 2010-12-03 | 2013-01-09 | 江苏中科节能环保技术有限公司 | Electro-bag compound dust remover realizing thorough offline dust removal |
| CN102091491A (en) * | 2010-12-03 | 2011-06-15 | 江苏中科节能环保技术有限公司 | Electro-bag compound dust remover realizing thorough offline dust removal |
| CN102363090A (en) * | 2011-09-16 | 2012-02-29 | 中冶南方工程技术有限公司 | Automatic control method for small-sized bag type dust remover |
| CN102363090B (en) * | 2011-09-16 | 2013-11-20 | 中冶南方工程技术有限公司 | Automatic control method for small-sized bag type dust remover |
| CN102430310A (en) * | 2011-10-23 | 2012-05-02 | 中冶焦耐(大连)工程技术有限公司 | Method for recycling fine coal particles |
| CN102430309A (en) * | 2011-10-23 | 2012-05-02 | 中冶焦耐(大连)工程技术有限公司 | Device for recovering fine-particle coal |
| CN102430310B (en) * | 2011-10-23 | 2014-04-02 | 中冶焦耐(大连)工程技术有限公司 | Method for recycling fine coal particles |
| CN102814097A (en) * | 2012-09-18 | 2012-12-12 | 辽宁调兵山煤矸石发电有限责任公司 | Tandem-type static electricity-cloth bag composite dust collector |
| CN103357232A (en) * | 2013-06-20 | 2013-10-23 | 江苏亿金环保科技股份有限公司 | Electrostatic fabric filter with complete offline function |
| CN103463921A (en) * | 2013-10-10 | 2013-12-25 | 福建龙净环保股份有限公司 | Electric bag dust collector |
| CN104162335B (en) * | 2014-08-22 | 2016-03-30 | 成都代代吉前瞻科技股份有限公司 | A kind of high-efficiency electric bag compound type dust remover |
| CN104162335A (en) * | 2014-08-22 | 2014-11-26 | 成都代代吉前瞻科技股份有限公司 | Novel efficient electricity and bag combined dust collector |
| 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 |
| CN104307299B (en) * | 2014-11-17 | 2016-02-17 | 福建龙净环保股份有限公司 | A kind of running optimizatin method of electric-bag complex dust collector and device |
| CN105363288A (en) * | 2015-11-25 | 2016-03-02 | 吕珩 | Mixed dust removal device |
| CN106925063A (en) * | 2015-12-31 | 2017-07-07 | 同方环境股份有限公司 | A kind of electrostatic fabric filter for removing PM2.5 |
| CN105477968A (en) * | 2016-01-04 | 2016-04-13 | 曾星 | Electricity and bag integrated dust collector |
| CN106268102A (en) * | 2016-08-31 | 2017-01-04 | 天津市鸿远电气股份有限公司 | Sack cleaner |
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