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Title:
TOP SEPARATOR FOR GAS PHASE AND HYDRAULIC PHASE CONTINUOUS DIGESTER AND METHOD FOR CONVERTING OPERATING MODE OF DIGESTER
Document Type and Number:
Japanese Patent JP2004339682
Kind Code:
A
Abstract:

To provide a top separator enabling easy mutual conversion of operating modes of a continuous digester between gas phase and hydraulic phase.

The continuous digester for producing chemical cellulose pulp from cellulose chips has a digester vessel with an upper section and at least partially filled with the cellulose chips and a liquor. A top separator used for the digester includes a lower chip inlet port, a chip conveyor, a screen adjacent to the conveyor, an upper chip discharge chute, a liquor outlet facing the side of the screen opposite to the conveyor, and a chip inlet conduit extending into the vessel and having a first operational mode in fluid communication with the chip inlet port and a second operational mode in which the chip inlet conduit discharges directly into the vessel.


Inventors:
VOGEL KEITH P
BOLLES JOHN F
SULLIVAN PATRICK J
STROMBERG C BERTIL
Application Number:
JP2004140757A
Publication Date:
December 02, 2004
Filing Date:
May 11, 2004
Export Citation:
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Assignee:
ANDRITZ INC
International Classes:
D21C7/06; D21C1/00; D21C1/10; D21C3/24; D21C3/26; D21C7/00; D21C7/08; D21C7/14; D21C; (IPC1-7): D21C7/06
Domestic Patent References:
JPH10331085A1998-12-15
JP2000154486A2000-06-06
JP2002201580A2002-07-19
JPS519402B11976-03-26
Foreign References:
US6086717A2000-07-11
Attorney, Agent or Firm:
Shizuo Nakamura



 
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