Bleaching medium consistency pulp with ozone
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United States of America Patent
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Jun 17, 2003
Issued Date -
N/A
app pub date -
Jun 5, 1995
filing date -
May 10, 1989
priority date (Note) -
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Abstract
A method of bleaching cellulose pulp with ozone includes pumping cellulose pulp in form of a fiber suspension having a consistency range of 5 to 25% with a high-consistency pump to a fluidizing Mixture in which oxygen and ozone containing gas is introduced and mixed into the pulp so as to generate a foam whereby the pulp fibers and the ozone used as the bleaching agent are brought to contact with each other, bleached, and the pulp is discharged from the mixer to a reaction vessel.
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