发明名称 |
A process for the production of a hemicellulose hydrolysate and special pulp. |
摘要 |
<p>The invention relates to a process for the production of a hemicellulose hydrolysate and special pulp through two steps, the first step comprising the prehydrolysis of the material and the second step the dissolving of the lignin contained in the prehydrolyzed material. According to the process the lignin dissolving is carried out by means of a neutral sulphite cooking with anthraquinone or a derivative thereof as a catalyst, the pH of the cooking liquor being initially at least 10.</p> |
申请公布号 |
EP0287960(B1) |
申请公布日期 |
1994.09.21 |
申请号 |
EP19880106006 |
申请日期 |
1988.04.15 |
申请人 |
SCITECH SERVICES, INC. |
发明人 |
TIKKA, PANU;VIRKOLA, NILS ERIK |
分类号 |
D21C3/02;C13K1/02;D21C1/04;D21C3/22;(IPC1-7):D21C1/00;D21C3/00;C08B37/14 |
主分类号 |
D21C3/02 |
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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