发明名称 |
METHOD AND DEVICE FOR DELIGNIFICATION OF CELLULOSE WITH OXYGEN |
摘要 |
<p>Method and Device for Delignification of Cellulose with Oxygen Method and apparatus for delignifying chemical pulp by means of oxygen, in which an aqueous slurry of chemical pulp is formed, then mixed with a caustic agent, followed by contact with a delignifying fluid. Water is drained off the slurry without reduction of pressure and while maintaining temperature following which the resulting slurry is maintained under these temperature and pressure conditions for a discrete period of time. The thus-obtained treated slurry is then washed.</p> |
申请公布号 |
CA1249404(A) |
申请公布日期 |
1989.01.31 |
申请号 |
CA19850485566 |
申请日期 |
1985.06.27 |
申请人 |
WAAGNER-BIRO AKTIENGESELLSCHAFT;STEYRERMUHL PAPIERFABRIKS-UND VERLAGS- AKTIENGESELLSCHAFT |
发明人 |
LOQUENZ, HEINZ;MEINDL, NORBERT;MEISSL, SIEGFRIED;SCHWARZL, KARL;SCHWEIGER, HELMUT;HRUSCHKA, ANTON |
分类号 |
D21C9/147;(IPC1-7):D21C9/147 |
主分类号 |
D21C9/147 |
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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