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:
May. 08, 1984
Filed:
Mar. 16, 1982
Applicant:
Inventors:
Hubert Coenen, Essen, DE;
Ernst Kriegel, Essen, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ; E21B / ;
U.S. Cl.
CPC ...
166267 ; 166259 ; 166261 ; 166266 ; 166271 ; 166272 ;
Abstract
Method for the underground gasification of solid fuels in which an underground fuel deposit is initially opened up and then converted into a gaseous fuel by means of a gasification medium. The opening of the fuel deposit is effected by treatment with a gas which is in the supercritical state, which takes on the volatile organic substances of the solid fuel and the water contained in the solid fuel. The dissolved organic compounds and the water are separated from the charged supercritical gas phase above ground in at least two fractions by pressure reduction and/or a change in temperature.