发明名称 |
FOUR STAGE ALKALINE PEROXIDE MECHANICAL PULPING |
摘要 |
A process for applying chemicals, such as an alkaline peroxide pretreatment (1) to lignocellulosic material before chemical refining and at the primary refiner (3). The preferred embodiment comprises (i) preconditioning at temperatures below 95~C, especially below 80~C, (ii) limiting the time and/o r temperature in the refiner, (iii) reaction quench to maintain temperatures below 80~C, and (iv) subsequent high consistency bleaching (4).
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申请公布号 |
CA2450464(A1) |
申请公布日期 |
2003.01.30 |
申请号 |
CA20022450464 |
申请日期 |
2002.07.19 |
申请人 |
ANDRITZ INC. |
发明人 |
XU, ERIC CHAO;PSCHORN, THOMAS;HERKEL, MARTIN |
分类号 |
D21C3/22;D21C9/16;(IPC1-7):D21C9/16 |
主分类号 |
D21C3/22 |
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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