Method for controlling an oxygen bleaching
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United States of America Patent
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Jun 20, 1989
Issued Date -
N/A
app pub date -
Jun 28, 1988
filing date -
Nov 8, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for controlling an oxygen-bleaching process of lignocellulosic pulp to a desired degree of delignification. The pulp is passed at a substantially constant temperature into a bleaching reactor wherein the pulp has a substantially constant level at its outlet. The hydrostatic pressure is measured and the quantity of oxygen fed into the reactor is adjusted to reach a desired degree of delignification.
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