发明名称 |
METHOD FOR ALKALINE COOKING OF FIBER MATERIAL |
摘要 |
A continuous, alkaline process for the production of pulp from wood chips, wherein the preheated chips are subjected to an extended impregnation step for at least 60 min, preferably longer, at a temperature not exceeding the impregnation liquor boiling point at atmospheric conditions, and a rapid heating and cooking period of less than 65 min, preferably shorter, followed by cooling to below reaction temperature. Fresh alkali is added both during impregnation and the heating/cooking period.
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申请公布号 |
WO0242550(A1) |
申请公布日期 |
2002.05.30 |
申请号 |
WO2001FI01009 |
申请日期 |
2001.11.21 |
申请人 |
METSO PAPER, INC.;FANT, THOMAS;SVEDMAN, MIKAEL;LAMMI, LARI |
发明人 |
FANT, THOMAS;SVEDMAN, MIKAEL;LAMMI, LARI |
分类号 |
D21C1/06;D21C3/24;D21C3/26;D21C7/00;(IPC1-7):D21C1/06 |
主分类号 |
D21C1/06 |
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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