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Class Information
Number: 162/52
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > Charging and/or discharging fibrous material
Description: Processes which include a step of charging a reaction vessel with fibrous material or discharging it therefrom, or from another vessel closely associated therewith, such as a blowpit.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7615134 |
Method and arrangement of impregnating chips |
Nov. 10, 2009 |
| 7601243 |
Method for conveying, mixing, and leveling dewatered pulp prior to drying |
Oct. 13, 2009 |
| 7569120 |
Method for converting an up-flow tower for cellulose pulp to a down-flow tower |
Aug. 4, 2009 |
| 7556713 |
Method and system for feeding cellulose chips to a high pressure continuous cooking system |
Jul. 7, 2009 |
| 7459058 |
Feed of a mixture of chips and fluid from a low-pressure system to a high-pressure system |
Dec. 2, 2008 |
| 7452444 |
Digester wash extraction by individual screen flow control |
Nov. 18, 2008 |
| 7422657 |
Method for the feed of cellulose chips during the continuous cooking of cellulose |
Sep. 9, 2008 |
| 7396434 |
Catalytic reactor process for the production of commercial grade pulp, native lignin and unicellular protein |
Jul. 8, 2008 |
| 7396435 |
Method for conveying, mixing, and leveling dewatered pulp prior to drying |
Jul. 8, 2008 |
| 7381302 |
Method and arrangement for impregnating chips |
Jun. 3, 2008 |
| 7374637 |
Method of bleaching cellulose pulp with a main conduit for wash liquor and filtrate |
May. 20, 2008 |
| 7350674 |
Arrangement for adjusting rotor position in a roting sluice |
Apr. 1, 2008 |
| 7351305 |
Method and a digester for the continuous cooking of wood raw material to cellulose pulp |
Apr. 1, 2008 |
| 7314538 |
Process and device for discharging lignocellulose raw materials from a digester and conveying the raw material to a refiner |
Jan. 1, 2008 |
| 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 |
| 7285179 |
Continuous digester for cellulose pulp including method and recirculation system for such digester |
Oct. 23, 2007 |
| 7282114 |
Method for processing pulp |
Oct. 16, 2007 |
| 7279070 |
Method for the continuous cooking of wood raw material for cellulose pulp |
Oct. 9, 2007 |
| 7270725 |
Pretreatment of chips with white liquor prior to a treatment with black liquor |
Sep. 18, 2007 |
| 7229526 |
Method and apparatus for the feeding of fibers |
Jun. 12, 2007 |
| 7229524 |
Feeding arrangement for feeding of chips to chip bins |
Jun. 12, 2007 |
| 7105076 |
Gas phase continuous digester having an inverted top separator with liquor injection |
Sep. 12, 2006 |
| 7060162 |
Chip bin |
Jun. 13, 2006 |
| 7001483 |
Apparatus for making carboxylated pulp fibers |
Feb. 21, 2006 |
| 6986828 |
Process for producing low DP microcrystalline cellulose |
Jan. 17, 2006 |
| 6986829 |
Process and container for stacking high-consistency stock |
Jan. 17, 2006 |
| 6958109 |
Process for feeding pulp into a blow tank or storage tank |
Oct. 25, 2005 |
| 6939439 |
Batch process for producing chemical pulp by removing and reintroducing calcium-containing spent liquor in the digester |
Sep. 6, 2005 |
| 6843885 |
Method for controlling the cooking temperature in a continuous vapour phase digester |
Jan. 18, 2005 |
| 6841042 |
Feeding comminuted fibrous material using high pressure screw and centrifugal pumps |
Jan. 11, 2005 |
| 6841036 |
Process for the oxygen delignification of pulp in two stages with higher pressure in the second stage |
Jan. 11, 2005 |
| 6773545 |
Method of forming and metering fluff pulp |
Aug. 10, 2004 |
| 6740198 |
Method and arrangement for mixing pulp components in the manufacture of paper |
May. 25, 2004 |
| 6736934 |
Method of pretreating pulp in an acid tower prior to bleaching with peroxide |
May. 18, 2004 |
| 6719878 |
Method for avoiding mechanical damage of pulp |
Apr. 13, 2004 |
| 6582554 |
Continuous digester having a sectioned top separator with multiple liquor extraction ports |
Jun. 24, 2003 |
| 6572734 |
Method for treatment of loose material |
Jun. 3, 2003 |
| 6551462 |
System for feeding comminuted fibrous material |
Apr. 22, 2003 |
| 6544385 |
Channel pulper |
Apr. 8, 2003 |
| 6514380 |
Treatment of chemical pulp |
Feb. 4, 2003 |
| 6506283 |
Pretreatment of chips before cooking |
Jan. 14, 2003 |
| 6491787 |
Method for heating pulps |
Dec. 10, 2002 |
| 6451163 |
Method of handling comminuted cellulosic fibrous slurry in a cylindrical vessel |
Sep. 17, 2002 |
| 6451165 |
Channel pulper |
Sep. 17, 2002 |
| 6447645 |
Feeding cellulose material to a treatment vessel |
Sep. 10, 2002 |
| 6447639 |
Process for controlling a digester using real time measurement of moisture content and species of wood |
Sep. 10, 2002 |
| 6436233 |
Feeding cellulose material to a treatment vessel |
Aug. 20, 2002 |
| 6432264 |
Method of making a vessel assembly for handling comminuted cellulosic fibrous material |
Aug. 13, 2002 |
| 6409883 |
Methods of making fiber bundles and fibrous structures |
Jun. 25, 2002 |
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