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Alfred E Keller: Reactivation of spent alkanolamine. Conoco, C R Schupbach, November 13, 1990: US04970344 (21 worldwide citation)

Aqueous alkanolamine solution containing alkali metal salts of anions which form heat stable salts with such alkanolamine is reactivated by contacting the solution sequentially with a basic anion exchange resin to remove such anions and an acidic cation ion exchange resin to remove alkali metal ions ...


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Fred C Veatch, Alfred E Keller: Regeneration of acidic cationic exchange resin used in the reactivation of spent alkanolamine. Conoco, C R Schupbach, April 9, 1991: US05006258 (18 worldwide citation)

Spent aqueous alkanolamine solution containing free alkanolamine, alkali metal salts of anions which form heat stable salts with such alkanolamine and heat stable alkanolamine salts is reactivated by contacting the solution with an acidic cation ion exchange resin to remove alkali metal cations and ...


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Alfred E Keller, Joe D Allison, Sriram Ramani, Terry D Pruitt: Short contact time catalytic partial oxidation process for recovering sulfur from an H2S containing gas stream. ConocoPhilips Company, Conley Rose, September 20, 2005: US06946111 (17 worldwide citation)

A process for removing sulfur from a H2S-containing gas stream is disclosed. A preferred embodiment of the process comprises incorporating a short contact time catalytic partial oxidation reactor, a cooling zone, and a condenser into a conventional refinery or gas plant process, such as a natural ga ...


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Alfred E Keller, Joe D Allison, Sriram Ramani: SPOX-enhanced process for production of synthesis gas. Conley Rose & Tayon PC, June 17, 2003: US06579510 (14 worldwide citation)

A method, system and catalysts for improving the yield of syngas from the catalytic partial oxidation of methane or other light hydrocarbons is disclosed. The increase in yield and selectivity for CO and H


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Alfred E Keller: Reactivation of spent alkanolamine. Conoco, C R Schupbach, September 3, 1991: US05045291 (12 worldwide citation)

Aqueous alkanolamine solution containing alkali metal salts of anions which form heat stable salts with such alkanolamine is reactivated by contacting the solution sequentially with a basic anion exchange resin to remove such anions and an acidic cation ion exchange resin to remove alkali metal ions ...


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Alfred E Keller, Sriram Ramani, Joe D Allison, Steven E Lusk, Nathan A Hatcher, Larry D Swinney, Kerri J Kirkendall, Gilbert E Torres, Paul D Stewart, Terry D Pruitt: Compact sulfur recovery plant and process. ConocoPhillips Company, Conley Rose P C, June 5, 2007: US07226572 (10 worldwide citation)

A compact sulfur recovery system is disclosed which comprises a primary structure including a catalytic partial oxidation reaction zone, a first temperature-control zone, a first Claus catalytic reaction zone, a second temperature-control zone, a first liquid sulfur outlet, and a first effluent gas ...


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Arthur L Cummings, Fred C Veatch, Alfred E Keller, James C Thompsen, Regina A Severson: Process for monitoring and controlling an alkanolamine reaction process. Conoco, November 10, 1992: US05162084 (9 worldwide citation)

Monitoring and controlling the reactivation of an alkanolamine solution containing heat-stable salts of such alkanolamine with stronger acid anions and weaker acid anions by contacting the alkanolamine solution (a) with a strong base anion exchange resin which has a high affinity for stronger acid a ...