发明名称 |
Two stage pulp bleaching reactor. |
摘要 |
A two stage ozone-pulp bleaching method and apparatus are disclosed. In the first stage, high consistency pulp particles are turbulently mixed and contacted with a gaseous mixture containing ozone to mix and contact substantially all of the pulp particles with ozone to react at least a portion of the pulp particles with the ozone. Pulp particles and gaseous bleaching mixture are then directed to a second stage including a quiescent pulp bed. Pulp particles may complete their reaction in the bed, which also serves to strip ozone which was not contacted with pulp particles in the first stage from the gaseous bleaching mixture. <IMAGE>
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申请公布号 |
EP0515303(A1) |
申请公布日期 |
1992.11.25 |
申请号 |
EP19920610036 |
申请日期 |
1992.05.19 |
申请人 |
UNION CAMP PATENT HOLDING, INC. |
发明人 |
PIKULIN, MICHAEL A.;FRIEND, WILLIAM H. |
分类号 |
D21C9/10;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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