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. 25, 2001
Filed:
Dec. 11, 1998
William B. Dolan, King of Prussia, PA (US);
Mark M. Davis, Chicago, IL (US);
Man-Wing Tang, Cerritos, CA (US);
UOP LLC, Des Plaines, IL (US);
Abstract
An apparatus for pressure and temperature swing adsorption processes is described. Such processes include pressure swing adsorption, temperature swing adsorption, and sorption cooling. The apparatus, a spirally wound module, provides high efficiency gas separations by reducing the differential pressure required between the adsorption pressure and the desorption pressure. The apparatus comprises an adsorption zone containing at least one adsorbent paper layer containing a selective adsorbent and an adsorbent spacer spirally wound about a hollow mandrel and in intimate thermal contact with a heat transfer zone. For pressure and temperature swing processes, the adsorption zone is disposed on the outside of the heat transfer zone, and for sorption cooling processes, the heat transfer zone is disposed on the outside of the adsorption zone and the adsorption zone is contained in an envelope-like leaf. The apparatus provides an opportunity to de-couple a purge step from the heating step in thermal swing adsorption with a resulting improvement in efficiency.