Method and apparatus for the generation of hot gases with an ele

Details Method and apparatus for the generation of hot gases with an ele Method and apparatus for the generation of hot gases with an ele

1983-09-27

1986-06-17

Pellinen, A. D.

Industrial electric heating furnaces

Plasma furnace device

Direct furnace

219121PQ, 219121PR, 219121PY, H05B 700

Patent

active

045960194

ABSTRACT:
In a direct-current-operated, gas-vortex stabilized high-voltage arc furnace with hollow electrodes and a vortex chamber, the gas to be heated is blown in tangentially to the common axis of the electrodes. In the hollow electrodes, the ratio of the internal diameter of the cathode to that of the anode is 1.6 to 2.5, and the spacing between the electrodes is 0.9 to 0.7 times the internal diameter of the cathode. In the method of operation of the arc furnace, the momentum flow of gas to be heated is at least 10 kg m/s.sup.2, the gas entering into the vortex chamber is at a gas velocity of at least 10 m/s and pressures in the vortex chamber range from 1.5 to 10 bar (absolute).

REFERENCES:
patent: 3294952 (1966-12-01), Eschenbach
patent: 3705975 (1972-12-01), Wolf et al.
patent: 3746830 (1973-07-01), Fey et al.
patent: 3849543 (1974-12-01), Zirngibl et al.
patent: 3953705 (1976-04-01), Painter
patent: 4002466 (1977-01-01), MacRae et al.
Hydrocarbon Processing and Petroleum Refining, vol. 4, No. 6, 1962, p. 159.

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