Method and apparatus for bleaching pulp using two fluidizing mixers
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United States of America Patent
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Mar 19, 2002
Grant Date -
N/A
app pub date -
Apr 18, 1996
filing date -
Dec 7, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for bleaching medium consistency pulp with ozone using at least 2 fluidizing mixers to mix ozone and carrier gas into the pulp. The method is particularly applicable when the volume of the bleaching gas is larger than the volume used in conventional ozone bleaching, e.g. 2 m.sup.3 /adt.
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