Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquors
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United States of America Patent
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Jan 23, 2001
Grant Date -
N/A
app pub date -
Nov 18, 1998
filing date -
Nov 18, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Useable steam, e.g. substantially clean useable steam, is produced from a chemical cellulose pulping system hot spent treatment liquor (e.g. black liquor) with optimum energy efficiency by passing the spent liquor to a reboiler, and then pressurizing (e.g. with an eductor, fan, or compressor) the clean steam discharged from the reboiler. The clean steam can be used to steam incoming chips (e.g. in a chip bin) without significantly increasing the TRS load on the pulp mill NCG system.
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