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:
Oct. 16, 1984
Filed:
Jul. 25, 1983
David B Stickler, Carlisle, MA (US);
Avco Everett Research Laboratory, Inc., Everett, MA (US);
Abstract
Pulverized carbonaceous material such as coal while flowing through a reactor dispersed in a carrier gas substantially transparent to radiant energy and at atmospheric pressure is heated, typically for a few milliseconds to about 1500.degree. K., by thermal radiation while maintained in the cooler carrier gas to selectively heat the pulverized material, while cooling the volatile products as they diffuse into the cooler carrier gas, followed by quenching where necessary. In the case of coal, the principal result of this treatment is a radical increase in the easily soluble fraction of the coal with substantially no net change in the solid ultimate or proximate characteristics and substantially no output gaseous volatile production. The pulverized material and any condensed soluble fraction may then be subjected to solvent treatment with a solvent such as, for example, tetrahydrofuran (THF) or other suitable solvent to collect the soluble fraction which may then be subsequently separated and processed in conventional manner to produce moderate molecular weight organic compounds, liquid fuels and the like. The remaining insoluble fraction may, for example, be burned for process heat, used as a hydrogen source, or desulfurized by hydrogenation.