CN2933542Y - High concentration electric-bag composition dust remover - Google Patents
High concentration electric-bag composition dust remover Download PDFInfo
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- CN2933542Y CN2933542Y CN 200620079554 CN200620079554U CN2933542Y CN 2933542 Y CN2933542 Y CN 2933542Y CN 200620079554 CN200620079554 CN 200620079554 CN 200620079554 U CN200620079554 U CN 200620079554U CN 2933542 Y CN2933542 Y CN 2933542Y
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- electric precipitation
- dust remover
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Abstract
The utility model relates to an electric-bag composite dust-collector, comprising an electrical de-dusting unit (8) and a bag house unit (12), an inlet horn (6) at the entry of the dust-collector intaking air from the upper side and two or three layers of airflow-distribution board inside the inlet horn (6). The utility model adopts the long barbed wires with strong discharge intensity with the electrodes (3) at the lower part of the electrical de-dusting unit (8) electric field, while the upper half the short barbed wires are adopted for the discharge electrodes (3). The utility model effectively combines the advantages of the two traditional ways, which can deal with the high-density dust, has high efficiency for de-dusting the fine particle with a small air-flow resistance, low operating cost and long service life of filter materials.
Description
Technical field
The utility model relates to a kind of deduster, relates in particular to a kind of electricity-bag compound type dust remover.
Background technology
Two kinds of coal burning flue gas desulfurization technical point wet method and dry method, the dry flue gas desulphurization technical process is simple, and equipment corrosion and secondary pollution degree are lower, at the SO of medium and small boiler
2Be widely used in the improvement.Flue gas circulating fluidized bed dry desulfurizing process (Circulating Fluidized Bed FlueGas Desulphurization, be called for short CFB-FGD) can be under the low calcium-sulphur ratio situation near or reach the desulfuration efficiency of wet processing, more than 95%, be a kind of dry desulfurizing process that is most widely used at present promptly.CFB-FGD desulfurization product stable in properties can further fully utilize, and does not have secondary pollution.But it is, very big to the dust removal performance influence of follow-up deduster because the adding of desulfurization absorbent changes dust load, dust characteristic and flue gas characteristic.The flue gas after desulfurization cleaning equipment mainly is electric cleaner and sack cleaner.The electric cleaner running resistance is little, the critical piece long service life, and easy maintenance, however electric cleaner is relatively more responsive to dust and flue gas characteristic, and not high to the particle efficiency of dust collection of minuteness particle and high specific resistance.Circulating fluidized bed dry flue gas after desulfurization dustiness is big, and follow-up electric cleaner is easy to generate corona blocking, and because the cooling of absorption tower work of water sprinkling for better material moisture, humidity of flue gas increases, and sticking grey phenomenon usually appears in dust collector pole and discharge electrode.Sack cleaner efficiency of dust collection height is not subjected to the dust properties influence, but the deduster running resistance is bigger, and operation, maintenance cost is higher, and after the import dustiness increases, causes the deashing frequency to increase, and life-span of the filter bag shortens.Apply for by Xi'an University of Architecture and Technology, application number be 200520078762.x's " electricity-bag compound type dust remover " a kind of dust arrester with electric precipitation unit and the combination of bag-type dusting unit is disclosed, though this deduster purification efficiency height, running resistance are low, remove be rich in heavy metal the minuteness particle effect obviously, can efficiently remove industrial fumes, this deduster is undesirable for the high flue gas treatment effect of dust concentration.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of can direct purification high-concentration industrial flue dust, effectively avoid the electric cleaner corona blocking, reduce the sack cleaner running resistance, improve the electricity-bag compound type dust remover of life-span of the filter bag.This deduster purification efficiency height, running resistance be low, it is obvious to remove the minuteness particle effect.
For solving the problems of the technologies described above, the technical scheme that the utility model technical solution problem is adopted is: comprise electric precipitation unit (8) and bag-type dusting unit (12), a distribution grid (10) is set between described electric precipitation unit and the bag-type dusting unit, described electric precipitation unit (8) import department is provided with import loudspeaker (6), the inlet end (7) of described import loudspeaker (6) is located at the upper end, is provided with two-layer in import loudspeaker (6) or three layers of airflow-distribution board (4).
Described electric precipitation unit (8) electric field the latter half discharge electrode (3) adopts the bigger long prickle wire of strength of discharge, and the first half discharge electrode (9) adopts short prickle wire.
The version that distribution grid (10) is set between described electric precipitation unit (8) and bag-type dusting unit (12) is the porous plate that is provided with flow deflector.
The airflow-distribution board (4) that is provided with in the described import loudspeaker (6) is provided with flow deflector (5).The import loudspeaker have pre-dedusting effect.
The imagination of the utility model technical solution problem is:
1, enterprising air horn is adopted in the deduster air inlet.The structure of enterprising air horn comprises: gas approach loudspeaker, airflow-distribution board, flow deflector.Dusty gas is entered by loudspeaker top, and through the guide functions of distribution grid and flow deflector, air-flow carries granule and evenly enters electric field, and bulky grain directly falls into ash bucket because of effect of inertia.
2, deduster is divided into along its length two dust removing units.It is the electric precipitation unit that dusty gas is removed the first module of flowing through behind a part of dust by the import loudspeaker.The electric precipitation cell discharge utmost point adopts the barb type electrode, and corona discharge is strong, can effectively overcome corona blocking.Charged dust deposit adopts the method for mechanical vibrator to make the grit on discharge electrode and dust collecting pole plate surface fall into ash bucket at dust collecting pole plate, reaches the dedusting purpose.
3, deduster Unit second is the bag-type dusting unit, and dust-cleaning principle is identical with sack cleaner.Flue gas enters after the bag-type dusting unit, flows to the filter bag inboard by the outside, and dust is delayed at the outer surface of filter bag, forms dust layer.Sack cleaner adopts the purge mode of pulse jet, the pulse jet process sprays into filter bag with compressed air in the of short duration time, induce the air that is several times as much as jet simultaneously, filter bag opening produces rapid expansion and impact shock to the bottom, the dust on filter bag surface falls into ash bucket owing to inertia comes off from filter bag.
Behind dust-contained airflow process electric precipitation, can remove most dust, the Dust Capacity that arrives the bag-type dust unit reduces, and because static reinforced effect, make the dust granules that deposits to the filter bag surface arrange in order, the dust layer good permeability of formation is so can adopt higher air cloth ratio, the volume-diminished of bag-type dusting unit, investment reduces.While is good because of the dust layer fissility that electrostatic interaction deposits to the filter bag surface, and deashing is thorough, and the deashing number of times reduces, and the mechanical wear of filter bag and compressed air consumption reduce.
4, the combination of electric precipitation unit and bag-type dusting unit.Flue gas enters a bag dust removing units after by the electric precipitation unit.Flue gas does not directly enter a bag dust removing units, has avoided dusty gas directly washing away and the harm of high-temperature particle to filter bag filter bag.Establish airflow-distribution board between electric precipitation unit and bag dust removing units, ash-laden gas can enter each filter bag unit after distributing by air-flow equably, prolongs life of bag filter.
The beneficial effects of the utility model are:
The utility model effectively combines the advantage of two kinds of methods of tradition, can directly handle high concentrate dust, and minuteness particle is removed the efficient height, and deduster airflow resistance is little, and operation energy consumption is low, the filtering material long service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 is the utility model structural representation.
The specific embodiment
As shown in Figure 1, body of the present utility model mainly is made up of import loudspeaker 6, electric precipitation unit 8, bag-type dusting unit 12, three parts.Airflow-distribution board 4 and flow deflector 5 are housed in the import loudspeaker 6, have certain dedusting function.Electric precipitation unit 8 mainly is made of dust collector pole and discharge electrode 3, rapping apparatus 2, ash bucket 1 etc.Bag-type dusting unit 12 mainly is made of filter bag and support frame 13 thereof, pulse valve 11, ash bucket 14 etc.Filter type is an outside filtering type.
After flue gas entered deduster, at first by import loudspeaker 6, under the effect of airflow-distribution board 4, air-flow evenly entered electric precipitation unit 8.Corona wire 9 is fixed in the cathode frame, is suspended on the insulation porcelain knob, because corona wire 9 connects high-tension electricity, produce a large amount of electronics and anion during discharge, make dust in flue gas charged, charged dust dust collector pole to ground connection under the effect of electric field force moves, and is deposited on the dust collecting pole plate.When dust stratification acquires a certain degree, start rapping apparatus 2, carry out vibration dust-cleaning, make grit fall into ash bucket 1,, reach the dedusting purpose after ash-valve is discharged by vibration corona wire 9 and dust collecting pole plate.Electric precipitation unit 8 has only an electric field, and dust-collecting efficiency is more than 70%, and remaining dust electric field unit in front enters the pocket type unit 12 that gathers dust through distribution grid 10 after fully charged, because effects such as collision and interceptions, dust is delayed at filter bag 13 surfaces.When the pressure loss of filter bag 13 acquires a certain degree, rapid unbalanced pulse valve 11, compressed air is in abrupt release, in filter bag 13, spray, filter bag 13 outwards sharply expands therefore and rapidly, produce an impact shock, the dust on filter bag 13 surfaces falls into ash bucket 14 owing to inertia comes off from filter bag 13.Dust stratification in the ash bucket 14 is discharged by unloading valve.
Embodiment:
Enter deduster behind the flue gas that boiler is discharged and calcium hydroxide powder process economizer and the air preheater, at first carry out electric precipitation in the electric precipitation unit, the particle of not removing also passes through fully charged, utilizes the dedusting of bag dust removing units again, and effect is fine.The calcium hydroxide powder that the electric precipitation unit is collected is sent reactor cycles back to by conveying worm and is used because the reaction time is short.Long owing to the reaction time at the dust that the bag dust removing units is collected, the calcium hydroxide powder loses activity, and therefore, can directly discharge.Purified gas is discharged by chimney.Electricity-bag complex dust collector is the nucleus equipment in the technology in the whole technology.
Claims (4)
1, a kind of high concentration electricity-bag compound type dust remover, comprise electric precipitation unit (8) and bag-type dusting unit (12), a distribution grid (10) is set between described electric precipitation unit and the bag-type dusting unit, described electric precipitation unit (8) import department is provided with import loudspeaker (6), it is characterized in that: the inlet end (7) of described import loudspeaker (6) is located at the upper end, is provided with two-layer in import loudspeaker (6) or three layers of airflow-distribution board (4).
2, high concentration electricity-bag compound type dust remover according to claim 1 is characterized in that: described electric precipitation unit (8) electric field the latter half discharge electrode (3) adopts the bigger long prickle wire of strength of discharge, and the first half discharge electrode (9) adopts short prickle wire.
3, high concentration electricity-bag compound type dust remover according to claim 1 is characterized in that: the version that distribution grid (10) is set between described electric precipitation unit (8) and bag-type dusting unit (12) is the porous plate that is provided with flow deflector.
4, electricity-bag compound type dust remover according to claim 1 is characterized in that: the airflow-distribution board (4) that is provided with in the described import loudspeaker (6) is provided with flow deflector (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079554 CN2933542Y (en) | 2006-08-09 | 2006-08-09 | High concentration electric-bag composition dust remover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620079554 CN2933542Y (en) | 2006-08-09 | 2006-08-09 | High concentration electric-bag composition dust remover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2933542Y true CN2933542Y (en) | 2007-08-15 |
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ID=38350231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620079554 Expired - Fee Related CN2933542Y (en) | 2006-08-09 | 2006-08-09 | High concentration electric-bag composition dust remover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2933542Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890270A (en) * | 2010-07-16 | 2010-11-24 | 湖南湘达环保工程有限公司 | Electric dusting and electric bag dusting combined duster |
| CN107413159A (en) * | 2017-09-22 | 2017-12-01 | 华北电力大学 | A kind of electrostatic fabric filter for integrating energy-saving desulfuration dedusting |
| CN110694411A (en) * | 2019-11-05 | 2020-01-17 | 安徽国能亿盛环保科技有限公司 | Device for improving efficiency of electric dust collector and reducing resistance of bag dust collector |
-
2006
- 2006-08-09 CN CN 200620079554 patent/CN2933542Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101890270A (en) * | 2010-07-16 | 2010-11-24 | 湖南湘达环保工程有限公司 | Electric dusting and electric bag dusting combined duster |
| CN107413159A (en) * | 2017-09-22 | 2017-12-01 | 华北电力大学 | A kind of electrostatic fabric filter for integrating energy-saving desulfuration dedusting |
| CN110694411A (en) * | 2019-11-05 | 2020-01-17 | 安徽国能亿盛环保科技有限公司 | Device for improving efficiency of electric dust collector and reducing resistance of bag dust collector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20100809 |