January 2007

Special Report: Gas Processing Developments

Recover high-Btu gas from new sources

Innovative application of gas processing technologies enables clean-up of landfill methane

Nagl, G. J., Gas Technology Products Division, Merichem Chemical & Refinery Services LLC

Due to higher energy costs, new recovery methods for landfill gas (LFG) are garnering renewed interest. The recovered methane (CH4) from landfill operations can successfully be injected into natural gas pipelines. Combining proven technologies can "clean-up" recovered LFG to meet pipeline quality specifications. Background. Previously, LFG projects involved: Installing gas gathering systems Desulfurization and siloxane removal Combustion of the treated gas in gas engines or turbine/ generator sets to produce electrical power, or in boilers to produce steam. These projects were very attractive since very little processing was required even though the gas had low-to-medium heat

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