Oil shale retorting with steam and produced gas

Details Oil shale retorting with steam and produced gas Oil shale retorting with steam and produced gas

1989-06-30

1991-08-20

Pal, Asok

Mineral oils: processes and products

By treatment of solid mineral, e.g., coal liquefaction, etc.

Specified agitation or circulation in gas contact zone

208409, 208424, C10G 102

Patent

active

050412108

ABSTRACT:
A process for retorting oil shale in a vertical retort. Recycle gas containing steam and produced gas is separated from the retort off-gas and used to heat the oil shale. The steam is present in amount by volume of the recycle gas of at least 40% and preferably 70%. The minimum particle size of the oil shale is such that the particles are retained on a screen having 1/4 inch openings. The maximum particle size is such that the particles are capable of passing through a screen having 3 inch openings.

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patent: 4243511 (1981-01-01), Alfred
patent: 4454915 (1984-06-01), York et al.
patent: 4495058 (1985-01-01), Farnham et al.

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