Amalgam decomposer for mercury cathode cells for alkali...

Details Amalgam decomposer for mercury cathode cells for alkali... Amalgam decomposer for mercury cathode cells for alkali...

2008-10-10

2011-11-22

Griffin, Walter (Department: 1774)

Coating processes

Spray coating utilizing flame or plasma heat

Inorganic carbon containing coating, not as steel

C422S211000, C422S256000, C204S227000, C204S249000, C204S220000, C204S278000

Reexamination Certificate

active

08062712

ABSTRACT:
The invention relates to an amalgam decomposer for mercury cathode chlor-alkali cells. The amalgam decomposer of the invention contains a filling of carbon steel rings whose external surface is provided with a catalytic coating for amalgam decomposition consisting of one or more electrically conductive metals carbides. The internal surface of the rings is free of catalytic coating and wettable by the amalgam, while the external carbide catalytic coating is not wettable by the amalgam thereby favoring hydrogen evolution.

REFERENCES:
patent: 2423351 (1947-07-01), Taylor
patent: 3122594 (1964-02-01), Kielback
patent: 3606359 (1971-09-01), McCormick
patent: 3875039 (1975-04-01), Matusek et al.
patent: 3981490 (1976-09-01), Rousar et al.
patent: 4161433 (1979-07-01), De Nora et al.
patent: 5262133 (1993-11-01), Adams et al.
Database WPI Week 197522 Derwent Publications Ltd., London, GB; AN 1975-37088W. XP002458056 & SU 431 107 A (Antonov V N), Jan. 3, 1975. Abstract.
International Search Report for Application # PCT/EP2007/053563 Dated Nov. 27, 2007.

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