Title:
パルプの製造方法
Document Type and Number:
Japanese Patent JP5360546
Kind Code:
B2
Abstract:
A pulp production process can produce pulp at high yield without using sodium sulfide and high-temperature/high-pressure conditions if compared with the Kraft process and also collect lignin. Pulp is produced by processing wood chips for hydrophlicization at room temperature, using a dilute caustic soda aqueous solution, selectively partially modifying lignin in dilute nitric acid and digesting the wood chips by means of a dilute caustic soda aqueous solution under the atmospheric pressure. Lignin is agglomerated and sorted out from the isolated black liquor.
Inventors:
Aka Akira
Kazumasa Koike
Kazumasa Koike
Application Number:
JP2008554105A
Publication Date:
December 04, 2013
Filing Date:
January 15, 2008
Export Citation:
Assignee:
Nippon Cellulose Co., Ltd.
Toa Kogyo Co., Ltd.
Toa Kogyo Co., Ltd.
International Classes:
D21C1/04; D21C1/00; D21C3/00
Domestic Patent References:
JP2001512795A | 2001-08-28 | |||
JP2004256925A | 2004-09-16 | |||
JP2004169203A | 2004-06-17 | |||
JP2004169204A | 2004-06-17 | |||
JP2004169205A | 2004-06-17 | |||
JPH05163690A | 1993-06-29 | |||
JPS58132188A | 1983-08-06 | |||
JP2001512795A | 2001-08-28 | |||
JP2004256925A | 2004-09-16 | |||
JP2004169203A | 2004-06-17 | |||
JP2004169204A | 2004-06-17 | |||
JP2004169205A | 2004-06-17 | |||
JPH05163690A | 1993-06-29 | |||
JPS58132188A | 1983-08-06 |
Attorney, Agent or Firm:
Yukio Murata