61
John R Troost: Method and apparatus for analyzing gases containing volatile organic compounds by use of tetraglyme. Southern Petroleum Laboratories, N Elton Dry, July 22, 1997: US05650560 (3 worldwide citation)

A method and apparatus for sampling and analyzing gas. In particular landfill gas, which consists primarily of methane and contains volatile organic components, is passed through a quantity of liquid tetraglyme to cause the volatile organic components to be absorbed in the tetraglyme. The tetraglyme ...


62
Joseph A Silva, John Scalone, Jeffrey E Silva, Thomas L Moore: Biogas fuel conditioning system. Bio Spark, September 1, 2009: US07582140 (3 worldwide citation)

A biogas treatment system removes moisture and other unwanted materials from biogas originating, for example, with a landfill or anaerobic digester. Water and other unwanted materials are thus removed from landfill gas and waste water biogas, while the gas temperature is controlled to a usable level ...


63
GIBSON DAVID: [en] Process for the manufacture of town gas from landfill gas. JOHNSON MATTHEY, June 30, 2010: GB2466554-A (3 worldwide citation)

[en] A process for the manufacture of town gas from landfill gas comprises the steps of (a) recovering a landfill gas from a landfill site, (b) removing contaminants and water from the landfill gas and adjusting the carbon dioxide level in the resulting landfill gas to give a purified mixed gas stre ...


64
Hall Lars: A method of controlling the flow of landfill gas from sanitary landfills and apparatus for performing the method.. Ragn Sellsforetagen, April 18, 1990: EP0363508-A1 (3 worldwide citation)

This invention concerns a method of controlling the recovery of landfill gas from a sanitary landfill by measuring the temperature of the gas and by adapting the gas withdrawal thereby and apparatus for performing the method. Landfill gas, which mainly consists of methane and carbon dioxide, is form ...


65
Stephen J Markbreiter, Irving Weiss: Cryogenic treatment of landfill gas to remove troublesome compounds. Kryos Energy, Paul W Garbo, January 28, 1997: US05596884 (3 worldwide citation)

The cryogenic treatment of landfill gas removes troublesome compounds that cause severe corrosion of combustion engines in which the gas is used as fuel. It involves compressing the gas to an elevated pressure and isenthalpically expanding the gas to chill the gas to a temperature below -20 .degree. ...


66
Farha Floyd: Sulfur removal using ferrous carbonate absorbent. New Technology Ventures, Farha Floyd, ROSS Monty L, March 29, 2007: WO/2007/035435 (3 worldwide citation)

Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followed by drying, are used to treat and ...


67
Floyd E Farha, James A Kane: Method for reducing oxygen content of fluid streams containing sulfur compounds. New Technology Ventures, Locke Lord Bissell & Liddell, April 26, 2011: US07931815 (2 worldwide citation)

A method of using a sulfided iron reagent to remove oxygen from gaseous and liquid fluid streams such as natural gas, light hydrocarbon streams, crude oil, acid gas mixtures, carbon dioxide gas and liquid streams, anaerobic gas, landfill gas, geothermal gases and liquids, and the like is disclosed. ...


68
Floyd E Farha: Sulfur removal using ferrous carbonate absorbent. New Technology Ventures, Locke Lord Bissell & Liddell, May 17, 2011: US07943105 (2 worldwide citation)

Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followed by drying, are used to treat and ...


69
Stanley W Zison: Gas-operated pump. Getty Synthetic Fuels, Gordon L Peterson, February 16, 1988: US04725202 (2 worldwide citation)

A pump comprising an elongated housing adapted to be positioned in a landfill gas well. The housing has a peripheral wall, an interior chamber and apertures in the peripheral wall leading from the exterior of the housing to the chamber so that liquid can flow from the well into the chamber. A pressu ...


70
Charles D Elkins: Portable gas monitor. Elkins Earthworks, Fay Sharpe, Brian E Turung, April 24, 2012: US08163242 (2 worldwide citation)

A portable monitor used to measure landfill gas and landfill well parameters. The portable monitor includes a control unit and a measuring unit that can communication wirelessly with one another. The control unit and/or measuring unit can includes a heating arrangement to increase the temperature of ...



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