EP0188020A1 - Emission or collecting electrodes for electrofilters - Google Patents
Emission or collecting electrodes for electrofilters Download PDFInfo
- Publication number
- EP0188020A1 EP0188020A1 EP85202030A EP85202030A EP0188020A1 EP 0188020 A1 EP0188020 A1 EP 0188020A1 EP 85202030 A EP85202030 A EP 85202030A EP 85202030 A EP85202030 A EP 85202030A EP 0188020 A1 EP0188020 A1 EP 0188020A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheets
- electrodes
- spray
- use according
- steel
- 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
- 239000007921 spray Substances 0.000 claims abstract description 25
- 238000001556 precipitation Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 229910000746 Structural steel Inorganic materials 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000010935 stainless steel Substances 0.000 claims abstract description 3
- 238000005253 cladding Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims 3
- 229910052799 carbon Inorganic materials 0.000 claims 3
- 229910052804 chromium Inorganic materials 0.000 claims 3
- 239000011651 chromium Substances 0.000 claims 3
- 239000012535 impurity Substances 0.000 claims 3
- 229910052742 iron Inorganic materials 0.000 claims 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 2
- 229910052759 nickel Inorganic materials 0.000 claims 2
- 229910052758 niobium Inorganic materials 0.000 claims 2
- 239000010955 niobium Substances 0.000 claims 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims 2
- 229910052710 silicon Inorganic materials 0.000 claims 2
- 239000010703 silicon Substances 0.000 claims 2
- 239000010936 titanium Substances 0.000 claims 2
- 229910052719 titanium Inorganic materials 0.000 claims 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- 239000012717 electrostatic precipitator Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect 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
- B03C3/34—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]
Abstract
Zur Herstellung von Sprüh- und Niederschlagselektroden für trocken arbeitende Elektrofilter, in denen pyrophore Stäube abgeschieden werden, wird die Verwendung von beidseitig mit korrosionsbeständigem Stahl plattierten Blechen aus üblichem Baustahl vorgeschlagen. Derartige Bleche lassen sich problemlos mit anderen Bauteilen, beispielsweise Spannrahmen aus St 37 verarbeiten, ohne daß Probleme hinsichtlich unterschiedlicher Wärme-dehnung auftreten. Dadurch ist es möglich, zunderfeste Sprüh- und Niederschlagselektroden anzubieten, die nur wenig teurer sind, als nicht zunderbeständige Elektroden aus normalen Baustählen.For the production of spray and precipitation electrodes for dry-working electrostatic precipitators, in which pyrophoric dusts are separated, the use of sheets of conventional structural steel clad on both sides with corrosion-resistant steel is proposed. Such sheets can be processed with other components, for example stenter frames made of St 37, without problems with regard to different thermal expansion. This makes it possible to offer scale-resistant spray and precipitation electrodes that are only slightly more expensive than non-scale-resistant electrodes made from normal structural steels.
Description
Die Erfindung bezieht sich auf die Verwendung von beidseitig mit korrosionsbeständigem Stahl plattierten Blechen aus üblichem Baustahl zur Herstellung von Sprüh- und Niederschlagselektroden für trocken arbeitende Elektrofilter, in denen pyrophore Stäube abgeschieden werden.The invention relates to the use of sheets of conventional structural steel clad on both sides with corrosion-resistant steel for the production of spray and precipitation electrodes for dry-working electrostatic filters in which pyrophoric dusts are separated.
Bei trocken arbeitenden Elektrofiltern für die Reinigung von Konvertergasen sind häufig Betriebsunterbrechungen erforderlich, weil die Sprühelektroden infolge Verzunderung verhältnismäßig häufig ausfallen, obwohl die Gastemperatur üblicherweise 150 bis 250°C nicht übersteigt. Untersuchungen haben gezeigt, daß dies auf Glimmbrände des abgelagerten pyrophoren Staubes zurückzuführen ist, wobei an den Elektroden Temperaturen von über 600°C auftreten können. Die Verzunderung führt vor allem deswegen so schnell zu einem Ausfall der Sprühelektroden, weil die sich primär bildenden Oxidschichten keine Schutzwirkung entfalten können, da sie bei der periodischen Abreinigung der Elektroden durch Klopfschläge abplatzen.In the case of dry-working electrostatic precipitators for cleaning converter gases, interruptions in operation are often necessary because the spray electrodes fail relatively frequently as a result of scaling, although the gas temperature usually does not exceed 150 to 250 ° C. Investigations have shown that this can be attributed to smoldering fires of the deposited pyrophoric dust, and temperatures of over 600 ° C. can occur at the electrodes. The main reason for the scaling is that the spray electrodes fail so quickly because the oxide layers that form primarily cannot develop a protective effect because they flake off when the electrodes are periodically cleaned by knocking.
Solche Verzunderungen werden vor allem an den in Rahmen eingespannten Sprühelektroden beobachtet, in geringerem Umfang auch an den Niederschlagselektroden, nicht aber an den aus verhältnismäßig dickwandigen Rohren oder dergleichen bestehenden Spannrahmen selbst. Sprühelektroden aus zunderbeständigem Material können nicht eingesetzt werden, weil der Ausdehnungskoeffizient der für die vorliegende mechanische Beanspruchung geeigneten zunderbeständigen Werkstoffe größer ist als der des normalen Baustahles, aus dem die Spannrahmen gefertigt sind.Such scaling is observed above all on the spray electrodes clamped in the frame, to a lesser extent also on the precipitation electrodes, but not on the stretching frame itself, which consists of relatively thick-walled tubes or the like. Spray electrodes made of scale-resistant material cannot be used because the coefficient of expansion of the scale-resistant materials suitable for the present mechanical stress is greater than that of the normal structural steel from which the tensioning frame is made.
Deshalb würden sich die Sprühelektroden unter Betriebstemperatur stärker längen als die Rahmen. Die Elektroden wären dann nicht mehr zwangsweise mittig zwischen zwei Niederschlagslektroden angeordnet, sondern könnten im Gasstrom unkontrollierte Bewegungen ausführen, wodurch der Abstand zu den Niederschlagselektroden, damit die anwendbare Betriebsspannung und letztlich auch die Abscheideleistung verringert würde.Therefore, 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, thus reducing the applicable operating voltage and ultimately also the separation performance.
Darüber hinaus lassen sich lockere Sprühelektroden wesentlich schlechter abreinigen, weil sie den Klopfschlag absorbieren.In addition, loose spray electrodes are much harder to clean because they absorb the knock.
Starke Staubansätze auf den Sprühelektroden würden die Abscheideleistung des Filters weiter verringern.Heavy deposits of dust on the spray electrodes would further reduce the filter's separation efficiency.
Eine Ausführung der Sprühelektroden und der Spannrahmen aus dem gleichen zunderbeständigen Werkstoff, kommt aus Preisgründen allenfalls für Sonderfälle in Betracht. Zu dem Nachteil der mehrfach höheren Materialkosten kommt hinzu, daß sich zunderbeständige Werkstoffe schlechter verarbeiten lassen, so daß auch für die Herstellung und Montage mit höheren Kosten zu rechnen ist.A design of the spray electrodes and the clamping frame made of the same scale-resistant material is only considered for special cases for price reasons. In addition to the disadvantage of the several times higher material costs, scaling-resistant materials are difficult to process, so that higher costs can also be expected for production and assembly.
Es besteht somit die Aufgabe, zur Herstellung von Elektro- den, insbesondere von Sprühelektroden für Elektrofilter, die zur Abscheidung von pyrophoren Stäuben eingesetzt werden sollen, einen Werkstoff vorzuschlagen, der problemlos zusammen mit den üblicherweise verwendeten Werkstoffen einsetzbar und wirtschaftlich vertretbar ist.There is therefore the task of producing E lektro-, to propose the particular spray electrodes for electrostatic precipitators which are to be used for separating pyrophoric dusts a material that easily can be used together with the commonly used materials and is economically justifiable.
Überraschenderweise hat sich herausgestellt, das diese Aufgabe mit Blechen gelöst werden kann, die zur Verbesserung der Korrosionsbeständigkeit beidseitig plattiert sind, und zwar mit einem der in den Ansprüchen 2 bis 4 genannten Stähle. Es kommen Bleche mit einer Gesamtdicke von 1 bis 2 mm zum Einsatz, wobei die Plattierung normalerweise auf jeder Seite 8 bis 10 % der Gesamtdicke beträgt. Die Bleche für Sprühelektroden sind üblicherweise 1,5 bis 2 mm dick, während für Niederschlagselektroden vornehmlich 1,15 bis 1,4 mm dicke Bleche verwendet werden. Derartige Bleche sind unter der Bezeichnung Platinox(R) handelsüblich. ((R) = Warenzeichen der Firma Klöckner-Werke AG).Surprisingly, it has been found that this object can be achieved with sheets which are clad on both sides to improve the corrosion resistance, namely with one of the steels mentioned in claims 2 to 4. Sheets with a total thickness of 1 to 2 mm are used, with the cladding normally being 8 to 10% of the total thickness on each side. The sheets for spray electrodes are usually 1.5 to 2 mm thick, while sheets of precipitation 1.15 to 1.4 mm are mainly used for precipitation electrodes. Such sheets are commercially available under the name Platinox (R) . ((R) = trademark of Klöckner-Werke AG).
Nachdem in einem Elektrofilter für die Entstaubung von Konverter-Abgasen im ersten Abscheidefeld bereits nach 700 Betriebsstunden 20 % der Sprühelektroden durch Verzunderung ausgefallen waren, ist das gleiche Abscheidefeld versuchsweise je zur Hälfte mit Sprühelektroden aus herkömmlichen und aus plattiertem Werkstoff gemäß der Erfindung ausgerüstet worden. Nach 700 Betriebsstunden zeigten alle Sprühelektroden aus St 37 sehr starke Verzunderungen; 20 % waren bereits ausgefallen. Demgegenüber waren alle Sprühelektroden aus einem Werkstoff gemäß Anspruch 2 im wesentlichen zunderfrei. Selbst an den freiliegenden Schnittkanten konnte überraschenderweise kein nennenswerter Zunder festgestellt werden. Da die Wärmedehnung dieser Sprühelektroden praktisch allein durch das rund 80 % der Dicke einnehmende Kernmaterial bestimmt wird, waren alle Sprühelektroden nach Abschluß des Versuchs noch wesentlich besser gespannt, als dies bei der Verwendung von zunderbeständigem Material mit einem höheren Ausdehnungskoeffizient der Fall gewesen wäre. Sprühelektroden aus dem erfindungsgemäß zu verwendenden Material haben sich somit nicht nur als zunderfest, sondern auch als in den Rahmen aus üblichem Baustahl ausreichend spannbar erwiesen.After 20% of the spray electrodes in an electrostatic precipitator for the dedusting of converter exhaust gases in the first separation field had already failed due to scaling after 700 operating hours, the same separation field was experimentally equipped with spray electrodes made of conventional and half of the material according to the invention. After 700 hours of operation, all spray electrodes made from St 37 showed very severe scaling; 20% had already failed. In contrast, all spray electrodes made of a material according to claim 2 were essentially free of scale. Surprisingly, no significant scale could be found even on the exposed cut edges. Since the thermal expansion of these spray electrodes is practically determined solely by the core material, which takes up around 80% of the thickness, all of the spray electrodes were tensioned much better after the end of the test than would have been the case if scale-resistant material with a higher expansion coefficient had been used. Spray electrodes from the invention The material to be used has therefore not only proven to be scale-resistant, but also sufficiently tensionable in the frame made of conventional structural steel.
Die plattierten Bleche lassen sich fast ebenso leicht verarbeiten, wie man das von den üblichen Baustählen gewohnt ist. Sie sind zwar etwa 50 % teurer, was im Hinblick auf die erzielbaren Vorteile aber nicht ins Gewicht fällt.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 benefits that can be achieved.
Bei Niederschlagslektroden sind die Ausfälle infolge Verzunderung nicht so häufig zu beobachten wie bei Sprühelektroden. örtliche Glimmbrände sind - obwohl hier zahlreicher - wahrscheinlich deswegen ungefährlicher, weil über die größeren Querschnittsflächen eine bessere Wärmeabfuhr stattfindet und deswegen an den Niederschlagselektroden selbst nicht oder nicht so oft die erwähnten Temperaturen über 600°C auftreten. Außerdem dürften primär gebildete Oxidschichten auf den flächigen Niederschlagselektroden besser haften als auf den bandförmigen Sprühelektroden. Trotzdem kann die Verwendung plattierter Bleche auch für die Herstellung von Niederschlagselektroden vorteilhaft sein, weil hier im allgemeinen dünnere Bleche verwendet werden, die entsprechend schneller "durchzundern".The failures due to scaling are not observed as frequently with precipitation electrodes as with spray electrodes. Local smoldering fires - although more numerous here - are probably less dangerous because there is better heat dissipation over the larger cross-sectional areas and therefore the temperatures mentioned above 600 ° C do not occur at the precipitation electrodes themselves or not so often. In addition, primarily formed oxide layers should adhere better to the flat precipitation electrodes than to the band-shaped spray electrodes. Nevertheless, the use of plated sheets can also be advantageous for the production of precipitation electrodes, because thinner sheets are generally used here, which "scale" accordingly faster.
Vergleicht man die Kosten für ein Sprühelektrodensystem gegebener Größe, das a) aus herkömmlichen Blechen (St 37), b) erfindungsgemäß aus plattierten Blechen oder c) komplett, d.h. einschließlich Spannrahmen aus zunderfestem Material, welches auch den mechanischen Beanspruchungen genügt, besteht, so erhält man für a = 1 etwa folgende Relation:
- b = 1,1 bis 1,2
- c = 2,5 bis 3,5.
- b = 1.1 to 1.2
- c = 2.5 to 3.5.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85202030T ATE49354T1 (en) | 1985-01-16 | 1985-12-07 | SPRAY AND DEPOSIT ELECTRODES FOR ELECTRIC FILTERS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3501155 | 1985-01-16 | ||
DE19853501155 DE3501155A1 (en) | 1985-01-16 | 1985-01-16 | SPRAY AND DEPOSITION ELECTRODES FOR ELECTROFILTER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0188020A1 true EP0188020A1 (en) | 1986-07-23 |
EP0188020B1 EP0188020B1 (en) | 1990-01-10 |
Family
ID=6259900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85202030A Expired - Lifetime EP0188020B1 (en) | 1985-01-16 | 1985-12-07 | Emission or collecting electrodes for electrofilters |
Country Status (10)
Country | Link |
---|---|
US (1) | US4710203A (en) |
EP (1) | EP0188020B1 (en) |
JP (1) | JPS61164663A (en) |
KR (1) | KR930009720B1 (en) |
AT (1) | ATE49354T1 (en) |
AU (1) | AU581953B2 (en) |
DE (2) | DE3501155A1 (en) |
IN (1) | IN164691B (en) |
PL (1) | PL257476A1 (en) |
ZA (1) | ZA86297B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0862949A2 (en) * | 1997-03-07 | 1998-09-09 | Kabushiki Kaisya O-DEN | Electrostatic dust collecting apparatus and manufacturing method of the same |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3603947A1 (en) * | 1986-02-06 | 1987-08-13 | Stiehl Hans Henrich Dr | SYSTEM FOR DOSING AIR-CARRIED IONS WITH HIGH ACCURACY AND IMPROVED EFFICIENCY FOR ELIMINATING ELECTROSTATIC AREA CHARGES |
JPH01123645A (en) * | 1987-11-05 | 1989-05-16 | Fuji Electric Co Ltd | Electrostatic precipitator |
JPH054056A (en) * | 1990-11-30 | 1993-01-14 | Toshiba Corp | Electrostatic precipitator |
GB9615859D0 (en) * | 1996-07-29 | 1996-09-11 | Boc Group Plc | Processes and apparatus for the scrubbing of exhaust gas streams |
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 (en) * | 2018-03-23 | 2018-08-07 | 艾尼科环保技术(安徽)有限公司 | A kind of coating pole plate of electrostatic precipitator |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1557147A1 (en) * | 1966-10-01 | 1970-03-19 | Metallgesellschaft Ag | Spray electrodes for electrostatic dust collectors |
AT292861B (en) * | 1969-09-23 | 1971-09-10 | Interelectric Ag | Spray electrode for aerosol electrostatic precipitators |
DE3002676A1 (en) * | 1979-01-29 | 1980-08-07 | Cementfabriek Ijmuiden Cemij B | ELECTRIC FILTERS FOR GAS DEDUSTING AND ELECTRODES THEREFOR |
Family Cites Families (11)
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 |
US3819985A (en) * | 1972-12-01 | 1974-06-25 | R Dusevoir | Discharge electrodes for electrostatic precipitators and method of shipment and installation |
JPS49111084U (en) * | 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 |
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 |
-
1985
- 1985-01-16 DE DE19853501155 patent/DE3501155A1/en active Granted
- 1985-12-07 AT AT85202030T patent/ATE49354T1/en not_active IP Right Cessation
- 1985-12-07 DE DE8585202030T patent/DE3575266D1/en not_active Expired - Lifetime
- 1985-12-07 EP EP85202030A patent/EP0188020B1/en not_active Expired - Lifetime
- 1985-12-23 IN IN924/CAL/85A patent/IN164691B/en unknown
- 1985-12-26 KR KR1019850009802A patent/KR930009720B1/en not_active IP Right Cessation
-
1986
- 1986-01-10 US US06/818,126 patent/US4710203A/en not_active Expired - Fee Related
- 1986-01-14 PL PL25747686A patent/PL257476A1/en unknown
- 1986-01-15 ZA ZA86297A patent/ZA86297B/en unknown
- 1986-01-15 AU AU52420/86A patent/AU581953B2/en not_active Ceased
- 1986-01-16 JP JP61007154A patent/JPS61164663A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1557147A1 (en) * | 1966-10-01 | 1970-03-19 | Metallgesellschaft Ag | Spray electrodes for electrostatic dust collectors |
AT292861B (en) * | 1969-09-23 | 1971-09-10 | Interelectric Ag | Spray electrode for aerosol electrostatic precipitators |
DE3002676A1 (en) * | 1979-01-29 | 1980-08-07 | Cementfabriek Ijmuiden Cemij B | ELECTRIC FILTERS FOR GAS DEDUSTING AND ELECTRODES THEREFOR |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0862949A2 (en) * | 1997-03-07 | 1998-09-09 | Kabushiki Kaisya O-DEN | Electrostatic dust collecting apparatus and manufacturing method of the same |
EP0862949A3 (en) * | 1997-03-07 | 1998-11-25 | Kabushiki Kaisya O-DEN | Electrostatic dust collecting apparatus and manufacturing method of the same |
MY119915A (en) * | 1997-03-07 | 2005-08-30 | Kabushiki Kaisya O Den | Electrostatic dust collecting apparatus and manufacturing method of the same |
Also Published As
Publication number | Publication date |
---|---|
DE3575266D1 (en) | 1990-02-15 |
DE3501155C2 (en) | 1988-11-10 |
JPS61164663A (en) | 1986-07-25 |
EP0188020B1 (en) | 1990-01-10 |
ZA86297B (en) | 1987-09-30 |
DE3501155A1 (en) | 1986-07-17 |
KR860005652A (en) | 1986-08-11 |
AU581953B2 (en) | 1989-03-09 |
IN164691B (en) | 1989-05-13 |
AU5242086A (en) | 1986-07-24 |
US4710203A (en) | 1987-12-01 |
ATE49354T1 (en) | 1990-01-15 |
KR930009720B1 (en) | 1993-10-09 |
PL257476A1 (en) | 1987-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0303047B1 (en) | Exhaust gas flue for an exhaust gas purification plant | |
CH657287A5 (en) | CENTRIFUGAL SCREEN. | |
DE2410322A1 (en) | ELECTROSTATIC SEPARATOR FOR COLLECTING ACIDIC ELEMENTS IN AN ACID GAS | |
DE2433596B2 (en) | ELECTROSTATIC DUST COLLECTOR | |
WO2002097332A1 (en) | Heat shield arrangement for a hot-gas conducting component, in particular for structural pieces of gas turbines and method for production of said arrangement | |
EP0188020B1 (en) | Emission or collecting electrodes for electrofilters | |
DE3326259A1 (en) | Exhaust pipe | |
DE2545171C3 (en) | Method of making wire mesh | |
DE19958696C2 (en) | Industrial handle, especially for handling equipment | |
EP0155713B1 (en) | Collecting electrode for a dust separator | |
EP0100040A2 (en) | Coke oven door with a layered sealing strip | |
EP0397225B1 (en) | Filter element for removing dusts from gases | |
EP0391054B1 (en) | Use of a heat-resistant steel for corrosion-resistant components | |
DE2044738C3 (en) | Spray electrodes arranged in bores in frames | |
DE2725286A1 (en) | FASTENING DEVICE FOR THE FILTER ELECTRODES OF AN ELECTROSTATIC DUST COLLECTION SYSTEM | |
DE554644C (en) | Spray electrode for electrostatic precipitator | |
DE3132998C2 (en) | Filter element for bag filters | |
DE1028538B (en) | Electrostatic precipitator discharge electrode and process for its manufacture | |
WO2001079574A1 (en) | Use of a hardenable copper alloy for molds | |
WO1998046360A1 (en) | Electrostatic filter | |
DE102010033855B4 (en) | Process for producing a gap material pipe for nuclear fuel rods | |
DE2145509C3 (en) | Spacer grids for fuel rods of nuclear reactors | |
DE2815531B2 (en) | Filter element, especially for cleaning hot gases | |
DE2031704A1 (en) | Discharge electrode for precipitator - comprising metal flats intersecting to form grid having form stability | |
DE2560039B1 (en) | Axially rigid, angularly movable connecting piece for exhaust pipes of internal combustion engines |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19860822 |
|
17Q | First examination report despatched |
Effective date: 19870914 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT DE FR GB IT |
|
REF | Corresponds to: |
Ref document number: 49354 Country of ref document: AT Date of ref document: 19900115 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 3575266 Country of ref document: DE Date of ref document: 19900215 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19910917 Year of fee payment: 7 |
|
ITTA | It: last paid annual fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19930831 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19931124 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19941207 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19941207 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19951115 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19960116 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19960828 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Effective date: 19961207 |