Contacting treated oil shale with carbon dioxide to inhibit leac

Details Contacting treated oil shale with carbon dioxide to inhibit leac Contacting treated oil shale with carbon dioxide to inhibit leac

1977-12-27

1979-01-09

Novosad, Stephen J.

Wells

Processes

In situ combustion

166259, 166288, 166303, 208 11R, 423155, E21B 4324, C01F 1118

Patent

active

041333810

ABSTRACT:
Leaching of water-soluble constituents from particles containing treated oil shale and including oxides of alkaline earth metals, such as particles in an in situ oil shale retort, is inhibited by contacting the particles with carbon dioxide in the presence of water for a sufficient time to produce a substantially water-insoluble and/or impermeable barrier of carbonates of alkaline earth metals at the surface of the particles.

REFERENCES:
patent: 1913395 (1933-06-01), Karrick
patent: 3454958 (1969-07-01), Parker
patent: 3480082 (1969-11-01), Gilliland
patent: 3617466 (1971-11-01), Todd
patent: 3994343 (1976-11-01), Cha et al.
patent: 4014575 (1977-03-01), French et al.
patent: 4016239 (1977-04-01), Fenton
Lawrence Livermore Laboratory - Oil Shale Project Quarterly Report, Jan. 25, 1977, (Report for Oct. - Dec. 1976).

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