EP0188020B1 - Electrodes d'émission ou collecteurs pour électrofiltre - Google Patents

Electrodes d'émission ou collecteurs pour électrofiltre Download PDF

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Publication number
EP0188020B1
EP0188020B1 EP85202030A EP85202030A EP0188020B1 EP 0188020 B1 EP0188020 B1 EP 0188020B1 EP 85202030 A EP85202030 A EP 85202030A EP 85202030 A EP85202030 A EP 85202030A EP 0188020 B1 EP0188020 B1 EP 0188020B1
Authority
EP
European Patent Office
Prior art keywords
structural steel
sheets
electrodes
steel
fact
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.)
Expired - Lifetime
Application number
EP85202030A
Other languages
German (de)
English (en)
Other versions
EP0188020A1 (fr
Inventor
Willi Bätza
Werner Rösch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GEA Group AG
Original Assignee
Metallgesellschaft AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Metallgesellschaft AG filed Critical Metallgesellschaft AG
Priority to AT85202030T priority Critical patent/ATE49354T1/de
Publication of EP0188020A1 publication Critical patent/EP0188020A1/fr
Application granted granted Critical
Publication of EP0188020B1 publication Critical patent/EP0188020B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • 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
    • B03C3/40—Electrode constructions
    • B03C3/60—Use of special materials other than liquids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12951—Fe-base component
    • Y10T428/12958—Next to Fe-base component
    • Y10T428/12965—Both containing 0.01-1.7% carbon [i.e., steel]

Definitions

  • the invention relates to strip-shaped spray electrodes for dry-working electrostatic filters, which are clamped in the framework of conventional structural steel, for the separation of pyrophoric dusts from gases at a temperature of 150 to 250 ° C., which are made from conventional structural steel clad on both sides.
  • the spray electrodes would stretch longer than the frames under operating temperature.
  • the electrodes would then no longer be arranged in the middle between two precipitation electrodes, but could perform uncontrolled movements in the gas flow, which would result in the distance to the precipitation electrodes, so that the applicable operating voltage and ultimately also the separation performance would be reduced.
  • a design of the spray electrode and the clamping frame made of the same scale-resistant material is only considered for special cases for price reasons.
  • scaling-resistant materials are difficult to process, so that higher costs can also be expected for production and assembly.
  • a spray electrode which is constructed in a sandwich-like manner from a metal base layer and cover layers firmly connected to it on both sides, in which the cover layers consist of a metal with a higher erosion resistance than the metal of the base layer.
  • the setting and maintenance of the radius of curvature is based on the fact that the material of the base layer burns off more than that of the cover layers, so that the latter literally form “outstanding” edges of the desired small thickness.
  • the spray electrodes are produced from sheets of conventional structural steel clad on both sides, the cladding of which is made of a corrosion-resistant steel stabilized with titanium or niobium with 10 to 18% chromium and 0.1% carbon, up to 1% silicon, up to 1% manganese, balance iron, including unavoidable impurities.
  • the plating can also consist of a steel stabilized with titanium or niobium with 16 to 20% chromium, 7 to 12% nickel, to 0.1% carbon, to 1% silicon, to 2% manganese, balance iron, including inevitable impurities .
  • Sheets with a total thickness of 1.5 to 2 mm are preferably used, the thickness of the cladding on each side of the sheet being 8 to 12% of the total thickness.
  • Spray electrodes made from the material to be used according to the invention have not only proven to be scale-resistant, but also to be sufficiently tensionable in the frame made of conventional structural steel.
  • the clad sheets can be processed almost as easily as you are used to with conventional structural steels. Although they are about 50% more expensive, this is not significant in terms of the advantages that can be achieved.

Landscapes

  • Electrostatic Separation (AREA)
  • Treatment Of Sludge (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Coating By Spraying Or Casting (AREA)

Claims (5)

1. Electrodes d'émission en forme de bande, tendues dans des cadres en acier de construction habituel, pour un électrofiltre fonctionnant à sec, en vue de séparer des poussières pyrophores de gaz à une température de 150 à 250°C, qui sont fabriquées à partir de tôles en acier de construction habituel, plaquées des deux côtés, caractérisées en ce que le placage est constitué d'un acier résistant à la corrosion et stabilisé par du titane ou par du niobium comprenant de 10 à 18 % de chrome, jusqu'à 0,1 % de carbone, jusqu'à 1 % de silicium, jusqu'à 1 % de manganèse, le reste étant du fer, y compris les impuretés inévitables.
2. Electrodes d'émission en forme de bande, tendues dans des cadres en acier de construction habituel, pour un électrofiltre fonctionnant à sec, en vue de séparer des poussières pyrophores de gaz à une température de 150 à 250°C, qui sont fabriquées à partir de tôles en acier de construction habituel, plaquées des deux côtés, caractérisées en ce que le placage est constitué d'un acier stabilisé par du titane ou par du niobium comprenant de 16 à 20% de chrome, de 7 à 12% de nickel jusqu'à 0,1 % de carbone, jusqu'à 1 % de silicium, jusqu'à 2% de manganèse, le reste étant du fer, y compris les impuretés inévitables.
3. Electrodes d'émission en forme de bande, tendue dans des cadres en acier de construction habituel, pour un électrofiltre fonctionnant à sec, en vue de séparer des poussières pyrophores de gaz à une température de 150 à 250°C, qui sont fabriquées à partir de tôles en acier de construction habituel plaquées des deux côtés, caractérisées en ce que le placage est constitué d'un acier comprenant de 26 à 28% de chrome et 4 à 5% de nickel, de 1,3 à 2% de molybdène, jusqu'à 2% de manganèse, jusqu'à 0,1 % de carbone, le reste étant du fer, y compris les impuretés initiales.
4. Electrodes d'émission selon l'une des revendications 1 à 3, caractérisée en ce que l'on utilise des tôles ayant une épaisseur totale de 1,5 à 2 mm.
5. Electrodes d'émission suivant la revendication 4, caractérisée en ce que l'épaisseur du placage de chaque côté des tôles représente de 8 à 12% de l'épaisseur totale.
EP85202030A 1985-01-16 1985-12-07 Electrodes d'émission ou collecteurs pour électrofiltre Expired - Lifetime EP0188020B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85202030T ATE49354T1 (de) 1985-01-16 1985-12-07 Sprueh- und niederschlagselektroden fuer elektrofilter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3501155 1985-01-16
DE19853501155 DE3501155A1 (de) 1985-01-16 1985-01-16 Sprueh- und niederschlagselektroden fuer elektrofilter

Publications (2)

Publication Number Publication Date
EP0188020A1 EP0188020A1 (fr) 1986-07-23
EP0188020B1 true EP0188020B1 (fr) 1990-01-10

Family

ID=6259900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85202030A Expired - Lifetime EP0188020B1 (fr) 1985-01-16 1985-12-07 Electrodes d'émission ou collecteurs pour électrofiltre

Country Status (10)

Country Link
US (1) US4710203A (fr)
EP (1) EP0188020B1 (fr)
JP (1) JPS61164663A (fr)
KR (1) KR930009720B1 (fr)
AT (1) ATE49354T1 (fr)
AU (1) AU581953B2 (fr)
DE (2) DE3501155A1 (fr)
IN (1) IN164691B (fr)
PL (1) PL257476A1 (fr)
ZA (1) ZA86297B (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3603947A1 (de) * 1986-02-06 1987-08-13 Stiehl Hans Henrich Dr System zur dosierung von luftgetragenen ionen mit hoher genauigkeit und verbessertem wirkungsgrad zur eliminierung elektrostatischer flaechenladungen
JPH01123645A (ja) * 1987-11-05 1989-05-16 Fuji Electric Co Ltd 電気集じん装置
DE4139474A1 (de) * 1990-11-30 1992-06-04 Toshiba Kawasaki Kk Elektro-staubabscheideanlage
GB9615859D0 (en) * 1996-07-29 1996-09-11 Boc Group Plc Processes and apparatus for the scrubbing of exhaust gas streams
JP3004938B2 (ja) * 1997-03-07 2000-01-31 株式会社オーデン 電気集塵装置及びその製造方法
US6951580B1 (en) 2004-04-13 2005-10-04 Nisource Corporate Services Company Method for minimizing bowing of collector plates in an electrostatic precipitator, and a collector plate-clip combination
CN108372028A (zh) * 2018-03-23 2018-08-07 艾尼科环保技术(安徽)有限公司 一种静电除尘器的涂层极板

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA623661A (en) * 1961-07-11 Bonk Steven Preventing deposit from sulphur oxide-containing dust with magnesium oxide
US1801515A (en) * 1929-03-13 1931-04-21 Int Precipitation Co Apparatus for electrical treatment of gases containing corrosive material and mercury
US2054405A (en) * 1933-10-18 1936-09-15 Union Carbide & Carbon Corp Welding chromium-nickel-titanium steels
US2034278A (en) * 1934-04-19 1936-03-17 Electro Metallurg Co Laminated metal stock
DE1557147A1 (de) * 1966-10-01 1970-03-19 Metallgesellschaft Ag Spruehelektroden fuer elektrostatische Staubabscheider
AT292861B (de) * 1969-09-23 1971-09-10 Interelectric Ag Sprühelektrode für Aerosol-Elektrofilter
US3819985A (en) * 1972-12-01 1974-06-25 R Dusevoir Discharge electrodes for electrostatic precipitators and method of shipment and installation
JPS49111084U (fr) * 1973-01-19 1974-09-21
US3831351A (en) * 1973-05-22 1974-08-27 Koppers Co Inc Electrostatic precipitator
GB1565419A (en) * 1976-04-27 1980-04-23 Crucible Inc Stainless steel welded articles
GB1603107A (en) * 1977-09-06 1981-11-18 Lodge Cottrell Ltd Gas treatment
NL7900669A (nl) * 1979-01-29 1980-07-31 Cementfabriek Ijmuiden Cemij B Elektrofilter.
JPS55159861A (en) * 1979-05-31 1980-12-12 Hitachi Plant Eng & Constr Co Ltd Discharge electrode for electric dust collector
JPS5637061A (en) * 1979-09-04 1981-04-10 Hitachi Plant Eng & Constr Co Ltd Discharge electrode for electric dust collector

Also Published As

Publication number Publication date
US4710203A (en) 1987-12-01
IN164691B (fr) 1989-05-13
DE3501155C2 (fr) 1988-11-10
JPS61164663A (ja) 1986-07-25
ATE49354T1 (de) 1990-01-15
DE3575266D1 (de) 1990-02-15
AU5242086A (en) 1986-07-24
KR860005652A (ko) 1986-08-11
ZA86297B (en) 1987-09-30
KR930009720B1 (ko) 1993-10-09
AU581953B2 (en) 1989-03-09
EP0188020A1 (fr) 1986-07-23
DE3501155A1 (de) 1986-07-17
PL257476A1 (en) 1987-01-26

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