发明名称 |
OZONE BLEACHING PROCESS |
摘要 |
2102899 9300470 PCTABS00019 Method and apparatus for ozone bleaching a medium consistency cellulosic fiber suspension include feeding the fiber suspension and an ozone in carrier gas stream under pressure into a fluidizing mixer (14); intimately and uniformly mixing the fiber suspension with the ozone to achieve a bleaching reaction; passing the mixture into a first reaction vessel (22) to permit the bleaching reaction to proceed and to consume a major part of the ozone; adding a second bleaching chemical to the mixture; separating the excess ozone and carrier gas from the mixture in a second considerably larger vessel (32) and removing the fiber suspension from the second vessel after the effective second bleaching reaction.
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申请公布号 |
CA2102899(A1) |
申请公布日期 |
1992.12.28 |
申请号 |
CA19922102899 |
申请日期 |
1992.06.25 |
申请人 |
A. AHLSTROM CORPORATION |
发明人 |
HENRICSON, KAJ;GREENWOOD, BRIAN F. |
分类号 |
D21C9/10;D21C9/153;(IPC1-7):D21C9/153 |
主分类号 |
D21C9/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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