Electrically assisted partial oxidation of light hydrocarbons by

Details Electrically assisted partial oxidation of light hydrocarbons by Electrically assisted partial oxidation of light hydrocarbons by

1998-08-31

1999-12-28

Straub, Gary P.

Compositions

Gaseous compositions

252373, 20415715, 20415747, 20415752, 204164, C01B 300, C01B 3100, H05F 300

Patent

active

060077425

ABSTRACT:
A process and device for electrically assisted partial oxidation of light hydrocarbons by oxygen. The purpose of the process and device is to produce gases rich in CO and H.sub.2 that may also have high contents of C.sub.2 H.sub.4 and C.sub.2 H.sub.2, without any formation of soot or coke by assisting with gliding electric discharge plasma the partial oxidation of hydrocarbons, accompanied by their steam reforming and/or reforming with CO.sub.2,. This mixture of products is achieved in a plasma reactor with gliding electric discharges that glow in the compartment brought to a temperature lower than 1200.degree. C. and at a pressure of less than 6 bars. The discharges act directly in an exothermic reactive medium consisting of hydrocarbons mixed with gaseous oxygen of any origin, and possibly with H.sub.2 O and/or CO.sub.2. The flow of products activated by the plasma and exiting the zone comes into contact with a metal or ceramic material placed in the compartment that is brought to a temperature not exceeding 1100.degree. C. This material becomes active in the presence of the flow of products and, as such, it contributes to the enhancement of the conversion of the products exiting the plasma compartment into the final product.

REFERENCES:
patent: 4144444 (1979-03-01), Dementiev et al.
Meguernes et al., "Oxidation of CH4 by H2O in a Gliding Elevtric Arc", Groupe Recherches Energetique Milieux Ionises, UFR Sciences, pp. 495-500, 1995.
Lesueur, et al., "Electrically Assisted Partial Oxidation of Methane," 2428 International Journal of Hydrogen Energy, Feb. 19, 1994, Head. Hill Hall, Oxford, GB, pp. 139-144.
DialogWeb Derwent database search results for English-language Abstract for French patent 2274806A1 dated Mar. 22, 1996, downloaded and printed from the web on Jan. 25, 1999 (2 pages).
International Search Report for PCT/US 98/18027 mailed Jan. 4, 1999.

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