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:
Jun. 04, 1985
Filed:
Feb. 22, 1984
Applicant:
Inventors:
Ekkehard Richter, Essen, DE;
Werner Korbacher, Mulheim, DE;
Karl Knoblauch, Essen, DE;
Klaus Giessler, Gelsenkirchen, DE;
Assignee:
Bergwerksverband GmbH, Essen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10K / ;
U.S. Cl.
CPC ...
4819 / ; 4819 / ; 55 25 ; 55 62 ; 166267 ;
Abstract
A pressure-swing adsorption system is used to enrich the methane content of mine gas obtained from bores around mine shafts or galleries from the customary 25 to 45% by volume to a product gas quality of 50% by volume. Using a carbon molecular sieve adsorbent, the adsorption is carried out at 5 to 8 bar and is followed by a uniflow expansion to an intermediate pressure and a counterflow expansion to a flushing pressure of 1.1 to 2 bar. Counterflow flushing is carried out with waste gas and the product gas is a mixture of the gases obtained by counterflow expansion and flushing.