DC arc plasma torch, for obtaining a chemical substance by decom

Electric heating – Metal heating – By arc

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Details

21912136, 21912151, 21912148, 219123, 31323131, B23K 1000

Patent

active

056884176

ABSTRACT:
DC arc plasma torch, in particular intended for obtaining a chemical substance from a plasma-generating gas (P) which includes said substance.
According to the invention:
the electrode (2A) is in communication with the chamber (3) for injecting the plasma-generating gas via a tubular piece (2B) through which the arc (10) passes and which constitutes the reaction chamber in which said plasma-generating gas (P) gives rise to the plasma (13) under the action of the electric arc (10); and
means (7, 8) are provided which make it possible to form a fluid barrier (14) between the electrode (2A) and the plasma (13).

REFERENCES:
patent: 3139509 (1964-06-01), Browning
patent: 3400070 (1968-09-01), Naff
patent: 3869593 (1975-03-01), New et al.
patent: 4683367 (1987-07-01), Drouet
patent: 5012065 (1991-04-01), Rayson et al.
patent: 5147998 (1992-09-01), Tsantrizos et al.
patent: 5262616 (1993-11-01), Labrot et al.
patent: 5296672 (1994-03-01), Ramakrishnan et al.
patent: 5374802 (1994-12-01), Dorfman et al.
Database WPI, .sctn.Ch, Week 9146 (Derwent Publ.), AN 91-335651 & JP-A-03224625 (Babcock-Hitachi).

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