Pamela R Dunne

US Patent:

20110290111, Dec 1, 2011

Filed:

May 3, 2011

Appl. No.:

13/099883

Inventors:

Stephen R. Dunne - Algonquin IL, US
Pamela J. Dunne - Algonquin IL, US
Lubo Zhou - Inverness IL, US
Peter K. Coughlin - Mundelein IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

B01D 53/22

US Classification:

95 51

Abstract:

The present invention provides a process for treating a natural gas stream comprising sending a natural gas stream to at least one membrane unit to produce a permeate stream containing a higher concentration of carbon dioxide and a retentate stream containing a lower concentration of carbon dioxide. Then the retentate stream is sent to an adsorbent bed to remove carbon dioxide and other impurities to produce a natural gas product stream. The regeneration gas stream is sent through the molecular sieve adsorbent bed to desorb the carbon dioxide. In one process flow scheme, the regeneration stream is combined with the permeate stream from the membrane unit. Then the combined stream is sent to an absorbent column to remove carbon dioxide from the permeate stream to produce a second natural gas product stream. In the alternative flow scheme, a second membrane unit is used to improve efficiency.

US Patent:

20110319673, Dec 29, 2011

Filed:

Jun 14, 2011

Appl. No.:

13/160181

Inventors:

Stephen R. Dunne - Algonquin IL, US
Pamela J. Dunne - Algonquin IL, US
Alexander M. Bershitsky - Northbrook IL, US
Mariola J. Proszowski - Des Plaines IL, US

Assignee:

UOP LLC - Des Plaines IL

International Classification:

C07C 29/76
B05D 3/00
B05D 5/00
B05D 3/02
C09K 5/00
B32B 3/00

US Classification:

568916, 252 75, 428332, 427380, 4273741

Abstract:

The present invention provides a process for applying a coating on a heat exchanger or a temperature controlled adsorber surface. This coating comprises a zeolite, an organic solvent, an organic siloxane resin that constitutes a binder and a plasticizing agent.