Mineral oils: processes and products – By treatment of solid mineral – e.g. – coal liquefaction – etc. – Including contact with extraneous additive other than...
Patent
1984-12-27
1986-05-06
Metz, Andrew H.
Mineral oils: processes and products
By treatment of solid mineral, e.g., coal liquefaction, etc.
Including contact with extraneous additive other than...
423114, 423119, 423131, 423157, 4236585, 208435, C10G 104
Patent
active
045870047
ABSTRACT:
Disclosed is a process for beneficiating oil-shale wherein the oil-shale is treated in a first stage with an aqueous ammonium salt solution and in a second stage and optionally a third stage in the presence of a solution containing ammonium ions/ammonia, or both. The pH of the first stage is from about 5 to 9, and the pH of the second and third stages are from about 0.5 to 5 or about 9 to 12 with the proviso that the pH of the second and third stage is not in the same range.
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Brons Glen
Siskin Michael
Exxon Research and Engineering Co.
Metz Andrew H.
Naylor Henry E.
Pal A.
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