1
Shivaji Sircar, Ravi Kumar, William R Koch, John VanSloun: Recovery of methane from land fill gas. Air Products and Chemicals, Geoffrey L Chase, William F Marsh, James C Simmons, September 13, 1988: US04770676 (71 worldwide citation)

High purity methane and carbon dioxide are recovered from landfill gas in an integrated multi-column adsorption system having a temperature swing adsorption section (TSA) for pretreatment of the crude landfill gas to remove trace impurities therefrom, the thus cleaned gas being fed to a pressure swi ...


2
Shoou I Wang, William R Koch: Hydrogen generation and recovery. Air Products and Chemicals, James C Simmons, Keith D Gourley, William F Marsh, September 26, 1989: US04869894 (57 worldwide citation)

High yields of hydrogen of high purity are obtained from a methane-rich gas stream, such as natural gas, by a particular combination of operations wherein the methane-rich gas undergoes primary steam reforming under less severe operating conditions including lower steam to carbon ratio, supplemented ...


3
William R Koch: Control system for air fractionation by selective adsorption. Air Products & Chemicals, Geoffrey L Chase, E Eugene Innis, James C Simmons, September 3, 1985: US04539019 (32 worldwide citation)

In a cyclic VSA system for air fractionation by selective adsorption of nitrogen from the feed air during an on-stream adsorption period in said cycle in which period an oxygen-enriched primary effluent discharged from the adsorption column is collected in a surge vessel, the duration of the on stre ...


4
Shivaji Sircar, Roger R Conrad, William R Koch: Closed-loop thermal regeneration of adsorbents containing reactive adsorbates. Air Products and Chemicals, John M Fernbacher, James C Simmons, November 20, 1990: US04971606 (20 worldwide citation)

A method is disclosed for the thermal regeneration of an adsorbent which contains adsorbed components which can react with and damage the adsorbent at regeneration temperatures. The method comprises passing a hot regeneration gas through a bed of the adsorbent at a sufficiently high flow rate such t ...


5
Shivaji Sircar, William R Koch: Oxidation of carbonaceous material. Air Products and Chemicals, Geoffrey L Chase, E Eugene Innis, James C Simmons, September 1, 1987: US04690696 (10 worldwide citation)

The gaseous effluent from oxidation of organic material with oxygen-rich gas, which effluent contains CO.sub.2 (and possible CO) and unreacted residual oxygen, is compressed and charged to a PSA system for selective removal of the CO.sub.x, the thus purified oxygen-rich product from the PSA system b ...



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