Low ash coal products from depolymerized coal

Details Low ash coal products from depolymerized coal Low ash coal products from depolymerized coal

1992-08-04

1994-03-22

Breneman, R. Bruce

Mineral oils: processes and products

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

208424, 208428, 208435, C10G 100

Patent

active

052961338

ABSTRACT:
A process for preparing a low ash coal wherein coal is depolymerized at low temperature by contacting finely divided coal with a hard acid and soft base, and extracting the depolymerized coal to remove mineral contaminants.

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