发明名称 |
METHOD AND APPARATUS FOR BLEACHING PULP |
摘要 |
The present invention relates to a method of and an apparatus for bleachi ng pulp. The method and apparatus in accordance with the invention are especial ly suitable for bleaching pulp with ozone at medium consistency, in other words when the consistency is 5 - 25 %, preferably 10 - 15 %. It is characteristic of the invention that ozone is mixed into the pulp to be bleached by means of t wo .ANG. mixers (14 and 16) and that the foamy suspension of gas and pulp thus obtained is discharged to a reaction vessel (30), in which the suspensi on is mixed, for example, by a paddle mixer.
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申请公布号 |
CA2150385(A1) |
申请公布日期 |
1994.06.23 |
申请号 |
CA19932150385 |
申请日期 |
1993.10.22 |
申请人 |
A. AHLSTROM CORPORATION |
发明人 |
HENRICSON, KAJ;PHILLIPS, JOSEPH;GREENWOOD, BRIAN;FUNK, ERWIN;DUNN, STEPHEN |
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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