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. 22, 2009
Filed:
Dec. 20, 2005
Narasimhan Sundaram, Fairfax, VA (US);
Bal K. Kaul, Fairfax, VA (US);
Edward W. Corcoran, Easton, PA (US);
Craig Y. Sabottke, Baton Rouge, LA (US);
Richard L. Eckes, Madison, NJ (US);
Narasimhan Sundaram, Fairfax, VA (US);
Bal K. Kaul, Fairfax, VA (US);
Edward W. Corcoran, Easton, PA (US);
Craig Y. Sabottke, Baton Rouge, LA (US);
Richard L. Eckes, Madison, NJ (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
The present invention is a method for operating a rapid cycling pressure swing adsorption (RCPSA) having a cycle time, T, to separate a feed gas into a non-adsorbed gas and tail gas. The method includes the steps of passing the feed gas having a purity of F % at high pressure into a first end of a bed which selectively adsorbs the tail gas and passes the product gas out a second end of the bed for a time, F. The product gas has a purity, P %, and a rate of recovery of R %. Then the bed is cocurrently depressurized for a time, t, followed by countercurrently depressurizing the bed for a time, t. The bed is then purged for a time, t, wherein desorbate (tail gas) is released at the first end of the bed at a pressure greater than 30 psig, Subsequently the bed is repressurized for a duration, t.R>80%, P/F≧1.1 or R≧90%, 0<P/F <1.1.