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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:
1 2 3 4

Patent Number Title Of Patent Date Issued
8691050 Methods and devices for continuous transfer of particulate and/or fibrous material between two zones with different temperatures and pressures Apr. 8, 2014
8657960 Method and system for fractionation of lignocellulosic biomass Feb. 25, 2014
8628623 Method and process for dry discharge in a pressurized pretreatment reactor Jan. 14, 2014
8617354 Shaped cellulose manufacturing process combined with a pulp mill recovery system Dec. 31, 2013
8617355 Method and apparatus for mixing a lignocellulosic material with enzymes Dec. 31, 2013
8512513 Method of and apparatus for controlling the height of a column of material in a vessel upstream of a pump Aug. 20, 2013
8448789 Apparatus for washing and dewatering pulp May. 28, 2013
8366875 Method and arrangement for wash after completed digestion in a continuous digester for the production of cellulose pulp Feb. 5, 2013
8366876 Method and arrangement for improving a washing step after completed cooking in a continuous digester Feb. 5, 2013
8317975 Product and processes from an integrated forest biorefinery Nov. 27, 2012
8216423 Multi-stage AP mechanical pulping with refiner blow line treatment Jul. 10, 2012
8197639 Vapour phase digester and a method for continuous cooking Jun. 12, 2012
8088254 Methods for producing recycled pulp, methods for modifying pulp fiber surfaces and dirts, as well as pulp processing equipments Jan. 3, 2012
8057639 System and method for preextraction of hemicellulose through using a continuous prehydrolysis and steam explosion pretreatment process Nov. 15, 2011
8025760 Feeder Sep. 27, 2011
7976675 Continuous digester system Jul. 12, 2011
7967947 Methods for beating pulp, methods for treating process waters, and methods for producing pulp and paper Jun. 28, 2011
7887671 Method for dilution of cellulose pulp Feb. 15, 2011
7758722 Production method for an absorbent fiber product and corresponding absorbent fiber product Jul. 20, 2010
7727355 Methods for producing recycled pulp and methods for modifying pulp fiber surfaces using liquid jet cavitation Jun. 1, 2010
7713383 Arrangement for feeding a slurry of chips and liquid May. 11, 2010
7713382 Method and apparatus for processing wood chips May. 11, 2010
7695591 Arrangement and Method for Treatment of Cellulose Pulp Involving Means for Seal Adjustment Apr. 13, 2010
7658820 Digester wash extraction by individual screen flow control Feb. 9, 2010
7658818 Method for converting a digester for use as a gas phase and hydraulic phase continuous digester Feb. 9, 2010
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
7229524 Feeding arrangement for feeding of chips to chip bins Jun. 12, 2007
7229526 Method and apparatus for the feeding of fibers 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

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