Title:
リグノセルロース原料の脱リグニン方法
Document Type and Number:
Japanese Patent JP4362364
Kind Code:
B2
Abstract:
The invention relates to a method for delignifying lignocellulosic raw materials by using sulfites in the presence of an alkaline component, especially sodium hydroxide or sodium carbonate or a mixture thereof in an aqueous solution at a high temperature and high pressure. The invention is characterized in that a first partial fragment of the alkaline component is added when the aqueous solution starts to decompose and in that at least a second partial fragment of the alkaline component is added only when delignification begins.
More Like This:
| JP6521798 | Papermaking additives |
| WO/2003/002813 | METHOD FOR DELIGNIFYING LIGNOCELLULOSIC RAW MATERIALS |
Inventors:
Pat Rudolph
Cord The Hier Otar
Rose Bijern
Cord The Hier Otar
Rose Bijern
Application Number:
JP2003508772A
Publication Date:
November 11, 2009
Filing Date:
July 01, 2002
Export Citation:
Assignee:
Voith Payper Fever Justems Gaem Behr und Coker Gae
International Classes:
D21C3/06; D21C3/02
Domestic Patent References:
| JP51112903A |
Foreign References:
| US3630832 | ||||
| US4767500 |
Other References:
紙パルプ技術便覧,日本,紙パルプ技術協会,1992年 1月30日,5版,72頁
Attorney, Agent or Firm:
Takatoshi Yamamoto
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