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Class Information
Number: 162/236
Name: Paper making and fiber liberation > Apparatus > Digester > With mechanical defibering means > Concurrent > Continuous
Description: Apparatus in which the stock material is fed to and discharged from a digester and defiberating apparatus at substantially the same rate, whereby a more or less steady flow of material is maintained.

Patents under this class:

Patent Number Title Of Patent Date Issued
7713383 Arrangement for feeding a slurry of chips and liquid May. 11, 2010
7658818 Method for converting a digester for use as a gas phase and hydraulic phase continuous digester Feb. 9, 2010
7309401 Top separator for gas phase and hydraulic phase continuous digesters and method for converting digester Dec. 18, 2007
7294227 Method and system for the treatment of pulp prior to ozone bleaching Nov. 13, 2007
7229524 Feeding arrangement for feeding of chips to chip bins Jun. 12, 2007
6989078 System for conveying shredded pulp to an ozone reactor Jan. 24, 2006
6833054 Method and apparatus for adjusting chemical dosage of pulp processing stage Dec. 21, 2004
6447645 Feeding cellulose material to a treatment vessel Sep. 10, 2002
6436233 Feeding cellulose material to a treatment vessel Aug. 20, 2002
6156159 Device for mixing of a fluid into a pulp-suspension Dec. 5, 2000
6120646 Feeding system of feeding a cellulose material Sep. 19, 2000
6051109 Apparatus for distributing fluffed pulp into a static bed reactor Apr. 18, 2000
5650045 Apparatus and method for wood pulp digester Jul. 22, 1997
4946555 Apparatus and method for measuring vent gas flow rates and parameters in pulp and paper processing Aug. 7, 1990
4612088 Reactor to perform chemical reactions with a disintegrating disc Sep. 16, 1986
4220498 Oxygen reactor systems pulp reject treatment Sep. 2, 1980
4128454 System and method for gas phase pulp bleaching Dec. 5, 1978
4088528 Method and apparatus for grinding chips into paper pulp May. 9, 1978
3989588 Apparatus for producing kraft type pulp Nov. 2, 1976
3964962 Gaseous reaction apparatus and processes including a peripheral gas receiving chamber and a gas recirculation conduit Jun. 22, 1976

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