CN201632329U - Rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector - Google Patents
Rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector Download PDFInfo
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- CN201632329U CN201632329U CN2010201352359U CN201020135235U CN201632329U CN 201632329 U CN201632329 U CN 201632329U CN 2010201352359 U CN2010201352359 U CN 2010201352359U CN 201020135235 U CN201020135235 U CN 201020135235U CN 201632329 U CN201632329 U CN 201632329U
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Abstract
The utility model discloses a rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector which comprises a duct collector shell, a rare-earth tungsten emission cathode rod and a rare-earth tungsten dust collection cathode rod, wherein the duct collector shell is formed by an air inlet section, a charge zone, a dust collecting zone and an air exhausting section in sequence; the air inlet section is provided with an air inlet; the air exhausting section is provided with an air outlet; the rare-earth tungsten emission cathode rod is hung in the charge zone; the rare-earth tungsten dust collection cathode rod is hung in the dust collecting zone; and the lower parts of the charge zone and the dust collecting zone are respectively provided with a dust collecting hopper opening. On one hand, the rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector effectively utilizes waste heat of the fume, and saves energy; on the other hand, the dust collector has high emission current density, thus greatly improving the catching efficiency of dust particles especially fine particles. In addition, the dust collector has lower operating voltage, easily solves the problem of high-temperature electric insulation, improves the stability and reliability of operation of the equipment, effectively utilizes the waste heat of fume and saves energy. The rare-earth tungsten material has good high temperature resistance such that the working temperature can reach 1200 DEG C.
Description
Technical field
The utility model relates to a kind of coal-fired flue-gas dust-removing equipment, is a kind of rare earth tungsten thermal electron emission type high temperature electrostatic deduster specifically.
Background technology
Efficient, clean burning technical elements at coal; the method that prior art is popular is to utilize advanced coal-fired combined cycle generation technology; such as: integrated gasification combined cycle plants (IGCC) generation technology; PFBC (PFBC) combined cycle generation technology or the like; in these technology; high temperature rough gas (flue gas) must could use through udst separation with after reaching its blade protection standard before entering gas turbine.The prerequisite that it is not only the gas turbine safe and reliable operation and prolongs its service life makes that also the pollutant after the discharging significantly reduces, and important environment protection significance is arranged.The flue-gas temperature that enters gas turbine is high more, and the thermal efficiency of system and gross efficiency are high more.Therefore, can developed country such as America and Europe all be considered as coal-fired combined cycle generation with coal gas of high temperature (flue gas) purification techniques and really realize one of key technology of commercialization and technology upgrading.As main contents of high temperature purification technology, the high-temperature dust removal technology is not only the key of development current I GCC, PFBC, and is particularly important for the coal-fired combined cycle generation technology that exploitation is more advanced.In addition, at chemical field, some drying system carries out convection drying as medium to material with about 1100 ℃ high-temperature flue gas, and the high-temperature flue gas that contains impurity must just can come into operation after purifying.
Up to now, existing high-temperature dust removal technology mainly comprises: electrostatic precipitation, cyclone dust removal, ceramic filter dedusting, metal felt dust removal by filtration and moving granular bed dust removal by filtration etc.It is low that electrostatic precipitator technology has pressure drop loss, do not have and stop up, and the smoke treatment amount is big, and efficiency of dust collection is especially to fine grained arresting efficiency advantages of higher.Traditional electrostatic precipitator is the corona-type electrostatic precipitator based on the high voltage corona discharge, and it is adapted at the middle low temperature environment work down below 450 ℃.The voltage range of its corona operation is dwindled under the condition of high temperature, and corona phenomenon is difficult to keep; Because its operating voltage height (up to 50-100KV), thereby the electric insulation problem is difficult to solve under the condition of high temperature.
The utility model content
Technical problem to be solved in the utility model is to overcome the defective that prior art exists, and has proposed a kind of rare earth tungsten thermal electron emission type high temperature electrostatic deduster.Adopt rare earth tungsten composite functional material to make hot cathode, utilize heat or other mode of heating of high-temperature flue gas itself to make the cathode temperature increase and launch electronics, make dust granules charged, by the effect of electric field force it is separated from flue gas and captures then.
The utility model rare earth tungsten thermal electron emission type high temperature electrostatic deduster comprises deduster housing, rare earth tungsten emitting cathode bar and the rare earth tungsten cathode rod that gathers dust; The deduster housing is made of air inlet section, charging area, dust collection section and exhaust section successively; The air inlet section is provided with air inlet, and the section of giving vent to anger is provided with the gas outlet; The described rare earth tungsten emitting cathode bar of suspention in the charging area, the described rare earth tungsten of the suspention cathode rod that gathers dust in the dust collection section; The bottom of charging area and dust collection section is equipped with the grey bell mouth of collection.
The described rare earth tungsten of the suspention cathode rod that gathers dust in described rare earth tungsten emitting cathode bar of suspention and the dust collection section in the described charging area, be: rare earth tungsten emitting cathode bar and the rare earth tungsten cathode rod that gathers dust is suspended in the center of charging area and dust collection section respectively with the stainless steel suspension rod, all along the deduster housing shaft to setting.
For solving high temperature electric insulation problem, the equal suit corundum of described rust steel suspension rod porcelain sleeve pipe insulate with the deduster housing.
Its course of work is:
The maximum operating temperature of charging area is 1200 ℃; At charging area, rare earth tungsten emitting cathode bar equably to around heat of emission electronics.For guaranteeing thermionic stable emission in big temperature range, emitter stage links to each other with power cathode, and charged voltage is controlled between the 0-3000V; At dust collection section, the rare earth tungsten cathode rod that gathers dust links to each other with power cathode, and the Control of Voltage of gathering dust is at 6000-20000V; The outer wall ground connection of deduster housing is as the anode of charging area and dust collection section.
After rare earth tungsten emitting cathode is heated, launches a large amount of electronics, and under the effect of electric field force, do directed movement to the deduster inner walls by negative electrode.High temperature dust flue gas stream axially enters charging area by air inlet, dust in flue gas is caught anion or free electron and charged, after charged particle enters dust collection section, shift to the deduster inner walls under the effect of electric field force, the grit that arrives inwall falls under gravity into the grey bell mouth of collection.
The utility model adopts rare earth tungsten composite functional material to make hot cathode, utilize heat or other mode of heating of high-temperature flue gas itself to make the cathode temperature increase and launch electronics, make dust granules charged, by the effect of electric field force it is separated from flue gas and captures then.Fume waste heat, energy savings have been effectively utilized on the one hand; Because its emission height (higher 2 more than the order of magnitude) on the other hand than corona-type electrostatic precipitator, thereby the capturing efficiency of grit especially fine particle improved greatly.In addition, its operating voltage is lower, and high temperature electric insulation problem solves easily, has improved operation stability of equipment and reliability.Effectively utilized fume waste heat, energy savings.Because rare earth tungsten material has good high-temperature stability, the operating temperature of rare earth tungsten thermal electron emission type high temperature electrostatic deduster can reach 1200 ℃.
Description of drawings
Fig. 1 is the utility model rare earth tungsten thermal electron emission type high temperature electrostatic deduster cross-sectional view.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is elaborated.
Embodiment
As shown in Figure 1, rare earth tungsten thermal electron emission type high temperature electrostatic deduster comprises deduster housing, rare earth tungsten emitting cathode bar 1 and the rare earth tungsten cathode rod 2 that gathers dust; The deduster housing is made of air inlet section 3, charging area 4, dust collection section 5 and exhaust section 6 successively; The air inlet section is provided with air inlet 7, and the section of giving vent to anger is provided with gas outlet 8; Rare earth tungsten emitting cathode bar is suspended in the center of charging area with the stainless steel suspension rod, along the deduster housing shaft to setting.For solving high temperature electric insulation problem, the equal suit corundum of stainless steel suspension rod porcelain sleeve pipe insulate with the deduster housing.The rare earth tungsten cathode rod that gathers dust is suspended in the center of dust collection section with the stainless steel suspension rod, along the deduster housing shaft to setting.For solving high temperature electric insulation problem, the equal suit corundum of described stainless steel suspension rod porcelain sleeve pipe insulate with the deduster housing.Charging area is provided with the grey bell mouth 9 of a collection, and the bottom of dust collection section is provided with several and collects grey bell mouth 9.
Claims (3)
1. rare earth tungsten thermal electron emission type high temperature electrostatic deduster comprises deduster housing, rare earth tungsten emitting cathode bar and the rare earth tungsten cathode rod that gathers dust; It is characterized in that: the deduster housing is made of air inlet section, charging area, dust collection section and exhaust section successively; The air inlet section is provided with air inlet, and the section of giving vent to anger is provided with the gas outlet; The described rare earth tungsten emitting cathode bar of suspention in the charging area, the described rare earth tungsten of the suspention cathode rod that gathers dust in the dust collection section; The bottom of charging area and dust collection section is equipped with the grey bell mouth of collection.
2. according to the described rare earth tungsten of claim 1 thermal electron emission type high temperature electrostatic deduster, it is characterized in that: the described rare earth tungsten of the suspention cathode rod that gathers dust in described rare earth tungsten emitting cathode bar of suspention and the dust collection section in the described charging area, be: rare earth tungsten emitting cathode bar or the rare earth tungsten cathode rod that gathers dust is suspended in the center of charging area and dust collection section respectively with the stainless steel suspension rod, all along the deduster housing shaft to setting.
3. according to the described rare earth tungsten of claim 1 thermal electron emission type high temperature electrostatic deduster, it is characterized in that: described stainless steel suspension rod suit corundum porcelain sleeve pipe, insulate with the deduster housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201352359U CN201632329U (en) | 2010-03-18 | 2010-03-18 | Rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201352359U CN201632329U (en) | 2010-03-18 | 2010-03-18 | Rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector |
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| Publication Number | Publication Date |
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| CN201632329U true CN201632329U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010201352359U Expired - Fee Related CN201632329U (en) | 2010-03-18 | 2010-03-18 | Rare-earth tungsten-heat electronic emission type high-temperature electrostatic dust collector |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078841A (en) * | 2010-11-22 | 2011-06-01 | 南京师范大学 | Single-zone plate type high-temperature electrostatic dust collector |
| CN102935407A (en) * | 2012-11-13 | 2013-02-20 | 东南大学 | Tubular corona-free high-temperature electrostatic dust collector |
| CN104043532A (en) * | 2014-06-18 | 2014-09-17 | 南京师范大学 | Dual-region tubular high-temperature electrostatic dedusting device |
| CN105498967A (en) * | 2015-07-20 | 2016-04-20 | 南京师范大学 | Novel dust precharged type electrostatically-enhanced granular-bed high-temperature dust removal system |
| CN111068917A (en) * | 2019-11-18 | 2020-04-28 | 昆明理工大学 | Dry-type medium-high temperature grading electric filtering dust removal method and device for flue gas of carbothermic reduction furnace |
| CN113649168A (en) * | 2021-08-19 | 2021-11-16 | 南京师范大学 | Electron emitter, manufacturing method thereof and dust charging device comprising electron emitter |
| CN113813732A (en) * | 2021-09-29 | 2021-12-21 | 南京师范大学 | Reinforced coalescence and high-efficiency granular layer filtering device for ultrafine particles |
-
2010
- 2010-03-18 CN CN2010201352359U patent/CN201632329U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102078841A (en) * | 2010-11-22 | 2011-06-01 | 南京师范大学 | Single-zone plate type high-temperature electrostatic dust collector |
| CN102078841B (en) * | 2010-11-22 | 2013-03-06 | 南京师范大学 | Single-zone plate type high-temperature electrostatic dust collector |
| CN102935407A (en) * | 2012-11-13 | 2013-02-20 | 东南大学 | Tubular corona-free high-temperature electrostatic dust collector |
| CN104043532A (en) * | 2014-06-18 | 2014-09-17 | 南京师范大学 | Dual-region tubular high-temperature electrostatic dedusting device |
| CN105498967A (en) * | 2015-07-20 | 2016-04-20 | 南京师范大学 | Novel dust precharged type electrostatically-enhanced granular-bed high-temperature dust removal system |
| CN111068917A (en) * | 2019-11-18 | 2020-04-28 | 昆明理工大学 | Dry-type medium-high temperature grading electric filtering dust removal method and device for flue gas of carbothermic reduction furnace |
| CN113649168A (en) * | 2021-08-19 | 2021-11-16 | 南京师范大学 | Electron emitter, manufacturing method thereof and dust charging device comprising electron emitter |
| CN113813732A (en) * | 2021-09-29 | 2021-12-21 | 南京师范大学 | Reinforced coalescence and high-efficiency granular layer filtering device for ultrafine particles |
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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: 20101117 Termination date: 20110318 |