Method and system for controlling the addition of bleaching reag

Details Method and system for controlling the addition of bleaching reag Method and system for controlling the addition of bleaching reag

1998-03-24

2000-11-28

Alvo, Steve

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With testing, sampling or analyzing

162 62, 162238, 162DIG10, D21F 706

Patent

active

061530506

ABSTRACT:
A method for controlling the addition of bleaching/delignifying reagents to obtain a substantially constant percentage of pulp delignification across the first bleaching stage. The present method allows substantial improvements in bleached pulp quality through proper addition of the bleaching/delignifying reagent flow rate. The efficiency of the bleaching/delignifying reagent is therefore greatly improved. Further, reduction of pulp off-grades, equipment corrosion and effluent loading are additional beneficial effects resulting from the present method.

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