发明名称 |
PROCESS FOR PRODUCING FIBROUS MATERIAL FROM WOOD |
摘要 |
A process for producing fibrous material which includes the following: preparing a solution of chemicals that includes less than 25% of sulphite (calculated as Na2SO3), based on the oven-dry amount of the lignocellulosic raw material; mixing the solution of chemicals with wood in a specified liquor material; heating the solution of chemicals and the wood to a temperature above room temperature; and then either of the following alternatives: (1) removing the free-flowing solution of chemicals and digestion of the wood in the vapor phase; (2) having the wood digested in the liquid phase and separating the free-flowing solution of chemicals and the wood.
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申请公布号 |
US2010032111(A1) |
申请公布日期 |
2010.02.11 |
申请号 |
US20070161647 |
申请日期 |
2007.04.04 |
申请人 |
VOITH PATENT GMBH |
发明人 |
AALTO ESA-MATTI;SCHUBERT HANS-LUDWIG |
分类号 |
D21C11/00;D21C3/04;D21C3/22 |
主分类号 |
D21C11/00 |
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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