Title:
【発明の名称】溶解固形分制御によるパルプ化改良、向上法
Document Type and Number:
Japanese Patent JP3414747
Kind Code:
B2
Abstract:
A method of controlling the pressure of a vertical continuous comminuted cellulosic fibrous material digester having a counter-current washing zone with wash screens, a main extraction, and at least one additional extraction-dilution loop distinct from the main extraction, the method comprising the step of: (a) withdrawing liquor from, and introducing liquor into, the digester at the at least one additional extraction-dilution loop to maintain the pressure in the digester at a desired super-atmospheric level while avoiding non-uniform, unstable material movement in the counter-current washing zone.
Inventors:
Plow, Jay Robert
Marcocchia, Bruno S.
Raxo, Richard O.
Le Mans, Karl El.
Marcocchia, Bruno S.
Raxo, Richard O.
Le Mans, Karl El.
Application Number:
JP50803896A
Publication Date:
June 09, 2003
Filing Date:
June 01, 1995
Export Citation:
Assignee:
Andritz Incorporated
International Classes:
D21C3/02; D21C3/22; D21C3/24; D21C7/00; D21C7/08; D21C7/12; D21C7/14; D21C9/02; D21C11/00; D21C11/04; D21G7/00; (IPC1-7): D21C3/02; D21C3/24
Domestic Patent References:
| JP5132882A | ||||
| JP4300378A | ||||
| JP415312B2 |
Attorney, Agent or Firm:
Shizuo Nakamura (2 outside)