Title:
セルロースパルプの製造方法及びその方法を実施する装置。
Document Type and Number:
Japanese Patent JP4741797
Kind Code:
B2
Abstract:
The method is for cooking of cellulose pulp in which the raw material, preferably in the form of chips, undergoes a successive elevation of temperature towards the cooking temperature while the chips are first impregnated with an impregnation liquor followed by cooking in a cooking liquor that is preferably alkali. Through the addition of pre-evaporated black liquor, either as early as the impregnation stage or during the subsequent cooking stage, an improved delignification process is achieved in which the pulp obtains improved properties, primarily with respect to strength/viscosity for a given degree of delignification, and also with respect to yield. The method can be used both for continuous cooking and for batch cooking of cellulose pulp.
Inventors:
Lindstrom, Michael
Snakenes, vydal
Snakenes, vydal
Application Number:
JP2003562381A
Publication Date:
August 10, 2011
Filing Date:
January 17, 2003
Export Citation:
Assignee:
Metso Fiber Karlstad Activolag
International Classes:
D21C3/24; D21C3/22; D21C11/10
Domestic Patent References:
| JP2002523640A | ||||
| JP5132882A | ||||
| JP2216289A | ||||
| JP10506687A | ||||
| JP2000509115A |
Attorney, Agent or Firm:
Takao Hamano
Teruichi Hirai
Teruichi Hirai