The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 1990
Filed:
Sep. 29, 1988
Alberto Delbianco, Magenta, IT;
Ermanno Girardi, San Donato, IT;
Eniricerche S.p.A., Milan, IT;
Abstract
A process for the single-step coal liquefaction is disclosed, which comprises reacting the coal in an aqueous suspension with carbon monoxide in the presence of a CO-conversion catalyst selected from an alkaline hydroxide or carbonate, wherein the reaction takes place at a temperature maintained for a time of up to about 20 minutes equal to a value selected within the range of from about 300.degree. to 370.degree. C., and then is increased over a time within the range of from about 20 to 40 minutes, until a temperature value is reached, within the range of from about 420.degree. to 450.degree. C. and is kept constant for a time of up to about 20 minutes.