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:
Sep. 02, 2003
Filed:
Dec. 22, 1999
Paul S. Wallace, Katy, TX (US);
Kay Anderson Johnson, Missouri City, TX (US);
Texaco Inc., San Ramon, CA (US);
Abstract
The invention is a process to recover a high pressure hydrogen rich gas stream from synthesis gas. The synthesis gas is separated into a hydrogen-enriched permeate and a hydrogen-depleted non-permeate by use of a membrane. The permeate experiences a substantial pressure drop of between about 500 psi (23.9 KPa) to 700 psi (33.5 kPa) as it passes through the membrane. The pressure of the non-permeate gas is unchanged by the membrane. The non-permeate gas pressure is reduced to between about 200 and about 500 psi for use in a combustion turbine. The hydrogen-rich permeate is compressed to between about 800 and 3000 psi (143.6 kPa) for use in subsequent operations, i.e., for use in hydrotreating of crude oil. The non-permeate gas is expanded in a manner to provide energy which is used to compress the permeate gas.