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:
Apr. 26, 1988
Filed:
Mar. 11, 1987
Yuy R Mehra, The Woodlands, TX (US);
Advanced Extraction Technologies, Inc., Houston, TX (US);
Abstract
A hydrogen-containing inlet gas stream is countercurrently extracted with lean solvent to produce an overhead stream of at least 90% purity hydrogen and a bottoms stream of rich solvent which is flashed in one to a plurality of stages. The flashed gas from at least the first stage, after compression, is recycled to the extracting step. The flashed gases from the remaining stages are recovered as fuel gas. When a hydrogen purity of more than 95% is needed, a minor portion of the stripped solvent from the last flashing stage is regenerated in a distillation column to form very lean solvent which is fed to the top of the extractor column while the major portion of the stripped solvent is fed to its middle.