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:
Feb. 16, 1982
Filed:
Jul. 23, 1980
Christian Benkmann, Munich, DE;
Linde Aktiengesellschaft, Hollriegelskreuth, DE;
Abstract
An adsorption process for purifying or fractionating a gaseous feed mixture comprises an adsorption phase, at least one expansion phase, a purging phase and at least one pressure build-up phase. The expansion phase(s) and the purging phase produce residual process gas fractions. The sum total of volume, and/or mass streams of the residual process gas fractions comprises a residual gas stream which is maintained chronologically substantially constant by controlling the volume and/or gas streams of the gas entering the purging phase and maintaining the gas leaving the expansion phase(s) at a substantially constant value, dependent on the desired mass and/or volume quantity of the residual gas stream. The length of the purging phase and of the expansion phase(s) is adjusted accordingly so that the relationship of the length of time of the purging phase to the length of time of the expansion phase(s) is substantially the same as the relationship of the volume and/or mass of the gas fractions obtained during the purging to those obtained during the expansion phase(s), respectively. The control of the purging and of the expansion phase(s) can also be varied in response to a flow rate of a feed gas entering the process.