Method and apparatus for condensing fugitive methane vapors
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United States of America Patent
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Apr 16, 1996
Grant Date -
N/A
app pub date -
Oct 12, 1994
filing date -
Oct 12, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Fugitive methane or natural gas vapors are recovered from a handling or delivery system and are blown through solid methane chips or a slush of solid and liquid methane. The solid methane melts and cools the vapors below the vaporization temperature to condense them. The condensed vapors and melted solid can be mixed with liquid methane for use therewith. The solid methane is produced by cooling liquid methane or natural gas in a liquid nitrogen heat exchanger or refrigerator. The liquid methane is solidified in a sheet on an endless belt, which breaks the sheet into pieces at a tail section.
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