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DE314030C - - Google Patents

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Publication number
DE314030C
DE314030C DENDAT314030D DE314030DA DE314030C DE 314030 C DE314030 C DE 314030C DE NDAT314030 D DENDAT314030 D DE NDAT314030D DE 314030D A DE314030D A DE 314030DA DE 314030 C DE314030 C DE 314030C
Authority
DE
Germany
Prior art keywords
porcelain
heat
collecting electrodes
hot gases
conductivity
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.)
Active
Application number
DENDAT314030D
Other languages
German (de)
Publication of DE314030C publication Critical patent/DE314030C/de
Active legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34Constructional details or accessories or operation thereof
    • B03C3/40Electrode constructions
    • B03C3/60Use of special materials other than liquids
    • B03C3/62Use of special materials other than liquids ceramics

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Spark Plugs (AREA)

Description

Sollen glühend heiße Gase elektrisch von mitgeführtem Staube befreit werden, so ergibt sich eine Schwierigkeit. Die aus Metall hergestellten Sammelelektroden werden in der Glühhitze unbrauchbar, sei es durch Erweichen oder Schmelzen, sei es durch Verbrennen oder sonstige chemische Verbindungen, die sie mit dem aufgelagerten Staube oder den Gasen eingehen: -If glowing hot gases are to be electrically freed from dust that has been carried along, the result is a difficulty. The collecting electrodes made of metal are in the Incandescent heat useless, be it through softening or melting, be it through burning or other chemical compounds that they enter into with the deposited dust or gases: -

ίο Die vorliegende Erfindung will diese Schwierigkeit dadurch vermeiden, daß sie die Sammelelektroden aus einem Material herstellt, das bei gewöhnlicher Temperatur freilich unbrauchbar ist, in der Hitze aber brauchbar wird und den Vorzug hat, feuerfest zu sein. Dahin gehören Porzellan, Steinzeug, Schamotte,-Ziegel und alle ähnlichen, im wesentlichen aus Ton, Magnesia und Kieselsäure, mit oderThe present invention addresses this difficulty avoid by making the collector electrodes from a material that is of course useless at ordinary temperature, but becomes usable in the heat and has the merit of being fireproof. This includes porcelain, stoneware, chamotte and bricks and all the like, consisting essentially of clay, magnesia and silica, with or

■ ohne Zusatz, hergestellten Stoffe. Alle diese Substanzen sind bei gewöhnlicher Temperatur zu schlechte Elektrizitätsleiter, um als Sammelelektroden brauchbar zu sein. Mit steigender Temperatur wächst aber ihre Leitfähigkeit. So wächst (nach den Untersuchungen von Fousserau, Nernst und Reynolds) das Leitvermögen des Porzellans bei einer Temperatursteigerung von 50 ° auf iopo° beinahe auf das io10 (Zehntausendmillion) fache. Durch die Benutzung eines der genannten Stoffe als Sammelelektrode wird es daher möglich, heiße Gase ohne Herabsetzung ihrer Temperatur staubfrei zu machen. Dieses ist aber von Wichtigkeit, da der Wärmegehalt eines heißen Gases einen Wert darstellt, den zu hüten man allen Grund hat.■ without additives, manufactured substances. All of these substances are too poor conductors of electricity at ordinary temperature to be useful as collecting electrodes. However, their conductivity increases as the temperature rises. Thus (according to the investigations by Fousserau, Nernst and Reynolds) the conductivity of the porcelain increases almost 10 (ten thousand million) times when the temperature rises from 50 ° to iopo °. By using one of the substances mentioned as a collecting electrode, it is therefore possible to make hot gases free of dust without lowering their temperature. But this is important, since the heat content of a hot gas is a value that one has every reason to be careful of.

Nicht neu ist zwar der Gedanke, Porzellan usw. schon bei gewöhnlicher Temperatur zu Sammelelektroden zu verwenden; zu diesem Behufe wurde aber das Porzellan mit einer leitenden Schicht, etwa einer Stanniol- oder Flüssigkeitsschicht, überzogen und diese Schicht mit dem einen Pole der Elektrizitätsquelle verbunden. In diesem Falle bildet also nicht das Porzellan, sondern die leitende Schicht die wirksame Sammelelektrode, während das Porzellan selbst nur die Rolle eines bloßen Trägers der Elektrode spielt. Von einer Benutzung in der Glühhitze ist hierbei nicht die Rede; die das Porzellan bedeckende Oberschicht mit ihrer leitenden Verbindung würde durch die Glühhitze sehr bald zerstört werden. An die Benutzung der Leitfähigkeit des Porzellans bei höheren Temperaturen hat man jedoch noch nicht gedacht.The idea that porcelain etc. should be closed at ordinary temperatures is not new To use collecting electrodes; but for this purpose the porcelain was made with a conductive layer, such as a tinfoil or liquid layer, and this layer connected to one pole of the electricity source. In this case, therefore, does not form the porcelain, but the conductive layer is the effective collecting electrode, while the Porcelain itself only plays the role of a mere support for the electrode. From one use there is no question of glowing heat; the one covering the porcelain The top layer with its conductive connection would very soon be destroyed by the glowing heat will. Has to use the conductivity of the porcelain at higher temperatures However, one has not yet thought of it.

Claims (1)

Patent-Anspruch:Patent claim: Sammelelektroden zum Gebrauche bei der elektrischen Reinigung staubhaltiger heißer Gase, bestehend aus Porzellan, Steinzeug, Schamotte, Ziegeln oder ähnlichen, im wesentlichen aus Ton, Magnesia und Kieselsäure bestehenden feuer-. festen Materialien.Collecting electrodes for use in electrical cleaning dusty hot gases, consisting of porcelain, stoneware, fireclay, bricks or similar, refractory consisting essentially of clay, magnesia and silica. solid materials.
DENDAT314030D Active DE314030C (en)

Publications (1)

Publication Number Publication Date
DE314030C true DE314030C (en)

Family

ID=566869

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT314030D Active DE314030C (en)

Country Status (1)

Country Link
DE (1) DE314030C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020003B (en) * 1955-07-30 1957-11-28 Metallgesellschaft Ag Electrostatic filters consisting of several units that can be switched off against each other
EP0550938A1 (en) * 1992-01-09 1993-07-14 METALLGESELLSCHAFT Aktiengesellschaft Process and devices for gas dedusting at elevated temperatures
EP0787531A1 (en) * 1995-08-08 1997-08-06 Galaxy Yugen Kaisha Electrostatic precipitator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1020003B (en) * 1955-07-30 1957-11-28 Metallgesellschaft Ag Electrostatic filters consisting of several units that can be switched off against each other
EP0550938A1 (en) * 1992-01-09 1993-07-14 METALLGESELLSCHAFT Aktiengesellschaft Process and devices for gas dedusting at elevated temperatures
DE4200343A1 (en) * 1992-01-09 1993-07-15 Metallgesellschaft Ag METHOD AND DEVICES FOR THE DEDUSTING OF GASES AT HIGH TEMPERATURES
US5348571A (en) * 1992-01-09 1994-09-20 Metallgesellschaft Aktiengesellschaft Apparatus for dedusting a gas at high temperature
EP0787531A1 (en) * 1995-08-08 1997-08-06 Galaxy Yugen Kaisha Electrostatic precipitator
EP0787531A4 (en) * 1995-08-08 1998-10-14 Galaxy Yugen Kaisha Electrostatic precipitator

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