Control scheme for rapid pulp delignification and bleaching
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United States of America Patent
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Sep 30, 1997
Grant Date -
N/A
app pub date -
Mar 3, 1995
filing date -
Mar 3, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process control for adjusting bleaching agent application in response to the pulp brightness and/or K number is realized by utilizing a coupled control feedforward and/or feedback control system or combination thereof wherein brightness measurements are made between successive K number measurements and adjustments made to the bleaching agent application in response to a comparison value.
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