Gordon T Cartwright, Age 751440 Hollytree Pl, Tyler, TX 75703

7575624, Aug 18, 2009

Dec 19, 2006

11/613055

Gordon T. Cartwright - Tyler TX, US
Keith R. Clark - Houston TX, US

UOP PLLC - Des Plaines IL

B01D 53/02
B01D 61/00

95 51, 95139, 96 4, 96122, 96130, 96144

The invention comprises a process of removing carbon dioxide from a natural gas feed stream comprising sending a natural gas feed stream comprising methane and carbon dioxide through an adsorbent bed to produce a carbon dioxide depleted methane rich product stream after removal of carbon dioxide. The adsorbent bed is regenerated and then the spent regeneration gas stream cooled to produce a cooled spent regeneration gas stream that is sent to a membrane element. A permeate stream passes through the membrane element and a residue stream passes by the membrane element without passing through said membrane element. Substantially all of the carbon dioxide and a minor portion of the methane comprises the permeate stream which is disposed of and a major portion of the methane and a minor portion of the carbon dioxide comprises the residue stream which is then recirculated to the regeneration gas stream.

7803215, Sep 28, 2010

Dec 12, 2007

11/954437

Bradley P. Russell - Wheaton IL, US
Mark E. Schott - Palatine IL, US
Gordon T. Cartwright - Tyler TX, US

UOP LLC - Des Plaines IL

B01D 53/04

95136, 95143, 423230, 208208 R, 208310 R, 585822

The invention relates to a process for removing heavy hydrocarbons and hydrogen sulfide from natural gas. The combination of a silica-gel and an activated carbon adsorber allow for a significant reduction in the overall bed volume required for removal of hydrocarbons.

6287365, Sep 11, 2001

Mar 6, 2000

9/519832

John Markovs - Cross Junction VA
Gordon T. Cartwright - Streamwood IL
Carmen M. Yon - Wheaton IL
Henry Rastelli - Gurnee IL

UOP LLC - Des Plaines IL

B01D 5304

95 96

A process is provided for the removal of trace amounts of aromatic hydrocarbons from an acid waste gas feed stream comprising sulfur compounds and the aromatic hydrocarbons. An adsorption process employing an adsorbent such as a high silica zeolite adsorbent having a framework silica-to-alumina ratio greater than about 15 and having a pore size greater than about 6. 2 angstroms is used to remove from the feed gas mixture aromatic hydrocarbon contaminants and permit the recovery of a high purity sulfur product from the treated effluent stream. The use of the present invention removes aromatic hydrocarbon contaminants which are responsible for the degeneration of the performance of the downstream sulfur recovery zone.

6120581, Sep 19, 2000

Jan 13, 1999

9/231359

John Markovs - Arlington Heights IL
Gordon Thomas Cartwright - Streamwood IL
Carmen M. Yon - Wheaton IL
Henry Rastelli - Gurnee IL

UOP LLC - Des Plaines IL

B01D 5347

95 99

A process is provided for the removal of trace amount of aromatic hydrocarbons from a waste feed gas stream comprising sulfur compounds and the aromatic hydrocarbons. An adsorption process employing an adsorbent such as a high silica zeolite adsorbent having a framework silica to alumina ratio greater than about 15 and having a pore size greater than about 6. 2 Angstroms is used to remove from the feed gas mixture aromatic hydrocarbon contaminants and permit the recovery of a high purity sulfur product from the treated effluent stream. The adsorption zone comprises at least 2 adsorption beds wherein one of the first adsorption beds is operating in an adsorption mode and the other is being regenerated at a desorption pressure higher than the adsorption pressure. The regeneration is performed in a closed system or partially closed system, and prior to returning a regenerated adsorption zone to adsorption conditions the waste feed gas stream is used to cool and purge the regenerated zone. Purge effluent from the regeneration zone is passed to a bed undergoing adsorption in a lead/trim configuration to prevent a slug of aromatic hydrocarbons from entering the adsorption effluent.