61
Bernard F Duesel Jr, David L Fenton, Michael J Rutsch: Waste heat recovery system. Heartland Technology Partners, Marshall Gerstein & Borun, June 11, 2013: US08459984 (3 worldwide citation)

A waste heat recovery system is coupled to a flare or exhaust stack of, for example, a landfill gas treatment system, to recover at least a portion of the energy within the exhaust produced by the gas treatment system and provides the recovered energy either indirectly or directly to a secondary pro ...


62
Floyd E Farha: Sulfur removal using ferrous carbonate absorbent. New Technology Ventures, Locke Lord Bissell & Liddell, May 17, 2011: US07943105 (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 ...


63
Stefan Stamoulis: Tool for enhancing the extraction of landfill gas. Boulware & Valoir, November 1, 2011: US08047276 (3 worldwide citation)

An apparatus and method to internally provide apertures inside polyvinyl chloride (PVC), high density polyethylene (HDPE), or any polymeric pie, plastic pipe-riser (blank casing) in existing landfill gas recovery wells (extraction wells) that have been installed at Municipal Solid Waste Facilities a ...


64
Stefan Stamoulis: Method for extracting landfill gas. Boulware & Valoir, March 19, 2013: US08398335 (3 worldwide citation)

An apparatus and method to internally provide apertures inside polyvinyl chloride (PVC), high density polyethylene (HDPE), or any polymeric pie, plastic pipe-riser (blank casing) in existing landfill gas recovery wells (extraction wells) that have been installed at Municipal Solid Waste Facilities a ...


65
Raymond Seegers, Steve Meyer: In-situ landfill gas well perforation method and apparatus. Waste Management, McDonnell Boehnen Hulbert & Berhgoff, June 17, 2008: US07387163 (3 worldwide citation)

The present invention relates to a method and apparatus for perforating a landfill gas well in situ. The invention allows for improved recovery of gas from a gas well without the danger of explosion.


66
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 ...


67
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 ...


68
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 ...


69
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. ...


70
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 ...



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