High-pressure cryogenic gas for treatment processes
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United States of America Patent
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Issued Date -
Sep 8, 2005
app pub date -
Mar 5, 2004
filing date -
Mar 5, 2004
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Abandoned
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Abstract
The present invention relates to cryogenic processes and systems for making and using high-pressure gas to quench or rapidly cool metals or other heated materials. The gas is preferably produced without pumps, compressors, and large high-pressure bulk storage tanks. The apparatus producing such gas comprises a cryogenic bulk storage tank, a pressure building apparatus, and a high-pressure vaporizer. A dew point monitor can be used to check gas purity to ensure uniform quenching and to prevent damage to the treated parts by, for example, water vapor. The method and system also may include a system that monitors the temperature, pressure, and level of liquid cryogen in the bulk storage tank and automatically calls in a refill for the storage tank.
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