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Title: Development of the utilization of combustible gas produced in existing sanitary landfills: effects of corrosion at the Mountain View, CA Landfill Gas-Recovery Plant

Technical Report ·
DOI:https://doi.org/10.2172/6721504· OSTI ID:6721504

Corrosion of equipment has occurred at the Mountain View, California Landfill Gas Recovery Plant. Corrosion is most severe on compressor valve seats and cages, tubes in the first and second stages of the interstage gas cooler, and first and second stage piping and liquid separators. Corrosion occurs because the raw landfill gas contains water, carbon dioxide, and oxygen. Some corrosion may also result from trace concentrations of organic acids present in the landfill gas. Corrosion of the third stage compressor, cooler, and piping does not occur because the gas is dehydrated immediately prior to the third stage. Controlling corrosion is necessary to maintain the mechanical integrity of the plant and to keep the cost of the gas competitive with natural gas. Attempts to reduce corrosion rates by injecting a chemical inhibitor have proved only partially successful. Recommendations for dealing with corrosion include earlier dehydration of the gas, selection of special alloys in critical locations, chemical inhibition, and regular plant inspections.

Research Organization:
Pacific Gas and Electric Co., San Francisco, CA (USA)
DOE Contract Number:
FG01-79CS20291
OSTI ID:
6721504
Report Number(s):
DOE/CS/20291-3; ON: DE83001576
Resource Relation:
Other Information: Portions of document are illegible
Country of Publication:
United States
Language:
English