EP1286779A1 - Elektrostatischer staubabscheider - Google Patents
Elektrostatischer staubabscheiderInfo
- Publication number
- EP1286779A1 EP1286779A1 EP01943449A EP01943449A EP1286779A1 EP 1286779 A1 EP1286779 A1 EP 1286779A1 EP 01943449 A EP01943449 A EP 01943449A EP 01943449 A EP01943449 A EP 01943449A EP 1286779 A1 EP1286779 A1 EP 1286779A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- electrostatic dust
- conical section
- gas
- dust separator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000428 dust Substances 0.000 title claims abstract description 48
- 230000035699 permeability Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 40
- 238000000926 separation method Methods 0.000 description 7
- 238000004200 deflagration Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000012717 electrostatic precipitator Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
- B03C3/011—Prefiltering; Flow controlling
-
- 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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/36—Controlling flow of gases or vapour
-
- 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
- B03C3/019—Post-treatment of gases
-
- 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
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/82—Housings
Definitions
- the invention relates to an electrostatic dust collector for horizontal gas passage, with a housing which is essentially rotationally symmetrical with respect to a central housing axis.
- Such electrostatic precipitators are known from the prior art and usually have vertical plate-shaped precipitation electrodes which are arranged at equidistant intervals parallel to the main axis of the housing.
- the precipitation electrodes are arranged at equidistant intervals parallel to the main axis of the housing, which extends according to the respective chord length essentially over the entire available height.
- Spray electrodes tensioned in frames are provided between the precipitation electrodes.
- scraper devices can be provided, for example around the housing axis, pivotable scraper devices over the lower region of the housing wall provided with dust discharge openings.
- Such a dust collector is known from EP 0 252 371 A1.
- This dust separator has an inlet and outlet connection piece, each of which is formed by 3 different conical sections, the conical sections being in specific size and height ratios to the housing diameter of the dust separator.
- Three gas distribution perforated plates are arranged in the central conical section.
- Dust collectors of this type are used for the dry dedusting of industrial useful and exhaust gases, especially if the gas mixtures are explosive, either permanently or temporarily.
- blast furnace blast furnace gases that operate at an excess pressure of 1.5 to 2.5 bar are dedusted in this way in order to relax them to 40 to 80 mbar without risk of erosion for energy recovery in turbines, with the dust content previously being 5 must be reduced to 20 mg / m 3 .
- electrostatic filters with a pressure loss of 1 to 2 mbar are considered, because equivalent high-performance washers have a pressure loss of 200 to 400 mbar in the separation capacity.
- Another area of application for such dust separators is coal grinding plants, the exhaust gases of which are explosive within certain limits because of the coal dust content. In any case, uncontrolled changes in the gas composition due to the swirling of coal dust deposits or the ingress of incorrect air must be avoided.
- the dedusting of exhaust gases from steel converters is also particularly critical because, due to the discontinuous mode of operation, flammable gases alternate and the ambient air is only slightly mixed with dust and gases. After dedusting, the flammable gases are collected in containers or fed into gas supply systems, while the gases produced intermittently outside the actual blowing phases of the converter are released into the atmosphere via a chimney after dedusting.
- a switchover device downstream of the dust separator is used for this purpose, which is controlled in time or depending on the gas composition. This switching device, the converter and also deflagrations upstream from the dust separator can initiate pressure surges in the gas stream, through which dust accumulations in the dust separator or in the upstream duct system can be detached and swirled in the gas stream.
- Such "dust impacts" on the one hand impair the separation performance of the dust separator and on the other hand are associated with an increased risk of deflagration.
- the object of the present invention to propose an electrostatic dust separator which has a separation efficiency which is improved compared to the prior art and which is less expensive to manufacture, but which should maintain the low tendency to deflagrations known from the prior art.
- This object is now achieved according to the invention by the combination of the following features: that the electrostatic dust separator is provided with an inlet connection which widens in a single conical section up to 80 to 95% of the housing diameter, the remaining expansion of 5 to 20% of the housing diameter in Is designed in the form of a step, which is essentially perpendicular and radially symmetrical to the housing axis, with at least two gas distribution perforated plates arranged in the conical section, which are arranged essentially perpendicular to the housing axis.
- this combination of features means that the electrostatic filter still does not tend to detonate, but that the separation efficiency is increased compared to the dust separator known from the prior art.
- the increase in separation efficiency is based on a gas velocity profile that is largely uniform over the cross-section of the Stuababscheiders, whereby the residence time distribution is also uniform. While these factors influence the ongoing operation of the electrostatic precipitator, the simple construction of the dust separator according to the invention with only a single cone and one step makes it easier and cheaper to manufacture. It is also possible to convert existing dust collectors quickly and inexpensively into dust collectors according to the invention.
- a cylindrical section is provided between the conical section and the stepped extension, the height (.) Of the cylindrical section being 5 to 15%, preferably approximately 10%, of the housing diameter D.
- the height h 2 of the conical section is in a certain size ratio to the housing diameter.
- a height h 2 of the conical section of 20 to 40% of the housing diameter has proven to be particularly advantageous.
- a step-shaped taper to 80 to 95% of the housing diameter follows on the gas outlet side of the housing, which taper is essentially perpendicular and radially symmetrical to the housing axis.
- step-shaped taper is followed by a section that tapers conically in a single section, with at least one gas distribution perforated plate arranged in the conical section, which is arranged essentially perpendicular to the housing axis and the height (h 4 ) of the conical section 20 to 40% of the housing diameter D.
- a cylindrical section is advantageously arranged between the step-shaped taper and the outlet nozzle, the height (h 3 ) of the cylindrical section being 5 to 15% of the housing diameter D.
- the inlet and outlet connections are identical, but mirror-inverted.
- the cylindrical section arranged between the conical section and the step-like widening and three gas distribution perforated plates arranged in the respective conical part are particularly preferred for the inlet and outlet connections.
- the design of the outlet connection according to the invention also achieves a gas velocity distribution which is uniform over the cross section and thus a separation performance which is constant over the entire length of the dust separator.
- Fig. 1 inlet connector with gas distribution perforated plates
- Fig. 2 dust separator according to the invention
- FIG. 1 schematically shows an inlet connection 1 for a dust separator according to the invention with an essentially cylindrical housing 2 and a central housing axis 3.
- the inlet connection 1 widens in a single conical section 10 to approximately 90% of the diameter D of the housing 2 of the dust separator and the height h 2 of the conical section 10 is approximately 35% of the housing diameter D.
- a cylindrical section 4 is connected to the conical section 10 whose height n is approximately 5% of the housing diameter D.
- the remaining 10% of the diameter expansion to the housing diameter D is in the form of a step-shaped, radially symmetrical recess 5.
- the direction of gas flow is indicated by arrow 7.
- FIG. 2 schematically shows a dust separator 8 according to the invention with an inlet connection 1, a housing 2 and an outlet connection 9, the arrow 7 again indicating the direction of gas flow.
Landscapes
- Electrostatic Separation (AREA)
- Cyclones (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT01943449T ATE435071T1 (de) | 2000-06-06 | 2001-05-25 | Elektrostatischer staubabscheider |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0099000A AT409347B (de) | 2000-06-06 | 2000-06-06 | Elektrostatischer staubabscheider |
AT9902000 | 2000-06-06 | ||
PCT/EP2001/006020 WO2001094023A1 (de) | 2000-06-06 | 2001-05-25 | Elektrostatischer staubabscheider |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1286779A1 true EP1286779A1 (de) | 2003-03-05 |
EP1286779B1 EP1286779B1 (de) | 2009-07-01 |
Family
ID=3683868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01943449A Expired - Lifetime EP1286779B1 (de) | 2000-06-06 | 2001-05-25 | Elektrostatischer staubabscheider |
Country Status (11)
Country | Link |
---|---|
US (1) | US7022166B2 (de) |
EP (1) | EP1286779B1 (de) |
KR (1) | KR100735174B1 (de) |
CN (1) | CN100342976C (de) |
AT (2) | AT409347B (de) |
AU (1) | AU2001266026A1 (de) |
BR (1) | BR0111523B1 (de) |
CA (1) | CA2411777A1 (de) |
DE (1) | DE50114960D1 (de) |
NO (1) | NO20025721L (de) |
WO (1) | WO2001094023A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101318160A (zh) * | 2007-06-08 | 2008-12-10 | 袁野 | 一种应用于电除尘器中的消风装置 |
CN102006939A (zh) * | 2008-02-11 | 2011-04-06 | 亚达帕丽·空达拉·姚 | 用于收集作业中产生的杂质的真空泵吸滤装置 |
US8038776B2 (en) * | 2008-03-12 | 2011-10-18 | Bha Group, Inc. | Apparatus for filtering gas turbine inlet air |
US7695551B2 (en) * | 2008-03-12 | 2010-04-13 | Bha Group, Inc. | Apparatus for filtering gas turbine inlet air |
US7527674B1 (en) * | 2008-03-12 | 2009-05-05 | Bha Group, Inc. | Apparatus for filtering gas turbine inlet air |
EP2433712A1 (de) * | 2010-09-27 | 2012-03-28 | Alstom Technology Ltd | Leitungsübergangsanordnung |
US8236092B1 (en) * | 2011-06-27 | 2012-08-07 | Richards Clyde N | Pressure gradient gas scrubber apparatus and method |
US9039815B2 (en) | 2011-08-10 | 2015-05-26 | John P. Dunn | Vane electrostatic precipitator |
US9073062B2 (en) * | 2011-08-10 | 2015-07-07 | John P. Dunn | Vane electrostatic precipitator |
US9238230B2 (en) | 2011-08-10 | 2016-01-19 | John P. Dunn | Vane electrostatic precipitator |
CN106733179A (zh) * | 2017-01-09 | 2017-05-31 | 广东工业大学 | 一种静电除尘霾装置 |
CN109706555A (zh) * | 2019-02-25 | 2019-05-03 | 安徽华茂纺织股份有限公司 | 筵棉输送管道除杂装置 |
CN111530630A (zh) * | 2020-06-03 | 2020-08-14 | 中国华电科工集团有限公司 | 一种均布板、湿式电除尘器及烟气排放装置 |
CN112981034A (zh) * | 2021-02-09 | 2021-06-18 | 鞍钢股份有限公司 | 一种提高转炉静电除尘器除尘效率的方法 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE520710C (de) * | 1925-01-14 | 1931-03-13 | Siemens Schuckertwerke Akt Ges | Vorrichtung zur Aufteilung des in eine elektrische Reinigungskammer eintretenden Gasstromes |
GB755757A (en) | 1954-03-15 | 1956-08-29 | Lodge Cottrell Ltd | Improvements in or relating to electrostatic precipitators |
US3425189A (en) * | 1965-08-27 | 1969-02-04 | Metallgesellschaft Ag | Diffuser-like inlet connection for electrical dust separators |
DE1296610B (de) * | 1966-10-28 | 1969-06-04 | Metallgesellschaft Ag | Klappenlochblech vor oder nach einem diffusorartigen Einlassstutzen am Eingang elektrostatischer Staubabscheider |
US3733785A (en) * | 1971-02-04 | 1973-05-22 | Envirotech Corp | Gas flow regulation for electric precipitators |
US3990871A (en) * | 1973-02-26 | 1976-11-09 | Joy Manufacturing Company | Dust collecting apparatus with gas flow regulator |
DE2719676C3 (de) * | 1977-05-03 | 1981-06-25 | Metallgesellschaft Ag, 6000 Frankfurt | Bauteilesatz für Gasverteilungseinrichtungen |
DE3300859C2 (de) * | 1983-01-13 | 1985-08-22 | Metallgesellschaft Ag, 6000 Frankfurt | Vorrichtung zur Umlenkung und Verteilung eines Gasstromes |
DE3329849A1 (de) * | 1983-08-18 | 1985-02-28 | Metallgesellschaft Ag, 6000 Frankfurt | Bauteilesatz fuer gasverteilungseinrichtungen |
DE3442806A1 (de) * | 1984-11-23 | 1986-06-05 | Krupp Polysius Ag, 4720 Beckum | Vorrichtung zum waermetausch zwischen gas und feinkoernigem gut |
DE3622699A1 (de) * | 1986-07-05 | 1988-01-14 | Metallgesellschaft Ag | Elektrostatischer staubabscheider |
CN88210573U (zh) * | 1988-05-24 | 1988-11-30 | 汪波 | 圆截面惯性式静电除尘器 |
US5041484A (en) * | 1990-06-20 | 1991-08-20 | Great Lakes Chemical Corporation | Flame retardant hot melt adhesive compositions using brominated styrene/atactic polypropylene graft copolymers |
US5156658A (en) * | 1991-05-01 | 1992-10-20 | Research-Cottrell, Inc. | Electrostatic precipitator gas inlet plenum having a corrugated perforated plate |
US5753013A (en) * | 1996-12-23 | 1998-05-19 | Dingfelder; Alan W. | Gas drying apparatus and method |
TW494021B (en) * | 1997-12-02 | 2002-07-11 | Supar Technology Co Ltd | Method for removing oil mist from electrostatic oil mist collector and device therefore |
CA2334636A1 (en) * | 2000-02-11 | 2001-08-11 | Arthur G. Hein | Electrostatic precipitator |
DE10028012A1 (de) * | 2000-06-06 | 2001-12-13 | Hilti Ag | Setzwerkzeug für Befestigungselemente |
EP1308213A1 (de) * | 2001-10-30 | 2003-05-07 | Alstom (Switzerland) Ltd | Zentrifugalabschneider, insbesondere für einen Reaktor mit zirkulierendem Wirbelbett |
-
2000
- 2000-06-06 AT AT0099000A patent/AT409347B/de not_active IP Right Cessation
-
2001
- 2001-05-25 WO PCT/EP2001/006020 patent/WO2001094023A1/de active Application Filing
- 2001-05-25 CA CA002411777A patent/CA2411777A1/en not_active Abandoned
- 2001-05-25 BR BRPI0111523-5A patent/BR0111523B1/pt not_active IP Right Cessation
- 2001-05-25 US US10/297,572 patent/US7022166B2/en not_active Expired - Fee Related
- 2001-05-25 KR KR1020027016581A patent/KR100735174B1/ko active IP Right Grant
- 2001-05-25 EP EP01943449A patent/EP1286779B1/de not_active Expired - Lifetime
- 2001-05-25 CN CNB018134173A patent/CN100342976C/zh not_active Ceased
- 2001-05-25 AT AT01943449T patent/ATE435071T1/de active
- 2001-05-25 DE DE50114960T patent/DE50114960D1/de not_active Expired - Lifetime
- 2001-05-25 AU AU2001266026A patent/AU2001266026A1/en not_active Abandoned
-
2002
- 2002-11-28 NO NO20025721A patent/NO20025721L/no not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO0194023A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR100735174B1 (ko) | 2007-07-03 |
ATE435071T1 (de) | 2009-07-15 |
US20030159585A1 (en) | 2003-08-28 |
BR0111523B1 (pt) | 2014-09-09 |
AU2001266026A1 (en) | 2001-12-17 |
CA2411777A1 (en) | 2002-12-02 |
CN1444510A (zh) | 2003-09-24 |
NO20025721D0 (no) | 2002-11-28 |
DE50114960D1 (de) | 2009-08-13 |
US7022166B2 (en) | 2006-04-04 |
ATA9902000A (de) | 2001-12-15 |
AT409347B (de) | 2002-07-25 |
WO2001094023A1 (de) | 2001-12-13 |
EP1286779B1 (de) | 2009-07-01 |
NO20025721L (no) | 2003-01-24 |
KR20030007879A (ko) | 2003-01-23 |
BR0111523A (pt) | 2003-07-22 |
CN100342976C (zh) | 2007-10-17 |
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