| Patents for D21C - Production of cellulose by removing non-cellulose substances from cellulose- containing materials; Regeneration of pulping liquors; Apparatus therefor (486) |
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| 09/27/2007 | US20070221345 Method and Device for Washing of Lime Mud |
| 09/19/2007 | EP1834034A1 Method for oxygen delignification of cellulose pulp by mixing of chemicals |
| 09/19/2007 | EP1834033A1 A method and apparatus for processing wood chips |
| 09/12/2007 | EP1831455A1 A method for oxygen delignification of cellulose pulp at high pressure in several steps |
| 08/08/2007 | CN101014738A Apparatus and method for washing pulps |
| 07/11/2007 | EP1805360A1 Apparatus and method for washing pulps |
| 07/05/2007 | US20070151691 Method for converting a digester for use as a gas phase and hydraulic phase continuous digester |
| 06/27/2007 | EP1801496A2 Shielding arrangement of the smelt spout area of a recovery boiler |
| 06/27/2007 | EP1799364A1 Method for manufacturing pulp from classified wood material |
| 06/20/2007 | EP1797236A1 Method for separating lignin from a lignin containing liquid/slurry |
| 06/20/2007 | EP1797235A1 Improved alkaline process and system for producing pulp |
| 06/14/2007 | WO2007065969A1 Method of producing paper and cardboard |
| 06/13/2007 | EP1794363A1 Method for separating lignin from black liquor |
| 06/13/2007 | CN1981086A Process for deinking waste paper |
| 06/07/2007 | WO2007063171A1 Process for producing chemi-mechanical pulp |
| 06/07/2007 | CA2631767A1 Process for producing chemi-mechanical pulp |
| 06/05/2007 | CA2462751C Cleaning device, cleaning tool and method of using the cleaning device |
| 05/30/2007 | EP1789624A1 Method and arrangement for impregnation of chips |
| 05/18/2007 | WO2007054610A1 A new pulp and process for pulping |
| 05/18/2007 | CA2627265A1 A new pulp and process for pulping |
| 05/03/2007 | US20070095490 Using pressurized fluid withdrawn from the treatment vessel for recovery for expelling the chips from the sluice feeder and subsequently sending the previously pressurized fluid to the recovery system reduces the requirement for high pressure pumps that consume large quantities of electrical energy |
| 05/02/2007 | EP1778910A1 Method and arrangement for impregnating chips |
| 04/26/2007 | US20070092422 Method for processing flue gases |
| 04/25/2007 | EP1777338A1 A method for scrubbing flue gases |
| 04/19/2007 | WO2007042619A1 A diffuser of an injector in a flotation cell and a method for feeding fibre suspension into the flotation cell |
| 04/18/2007 | CA2564444A1 A method for processing flue gases |
| 04/05/2007 | WO2007017553B1 Method to decompose the natural structure of biomass |
| 04/03/2007 | US7198695 Method for separating hemicelluloses from a biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method |
| 03/07/2007 | EP1759053A1 Process for deinking waste paper |
| 02/22/2007 | US20070039702 Purification of alkaline washing liquid |
| 02/21/2007 | EP1753907A1 Method and apparatus for removing gas from particulated material |
| 02/15/2007 | WO2007017553A1 Method to decompose the natural structure of biomass |
| 02/15/2007 | US20070036695 Shielding arrangement for the smelt spout area of a recovery boiler |
| 02/11/2007 | CA2555929A1 Shielding arrangement for the smelt spout area of a recovery boiler |
| 01/31/2007 | EP1747319A1 Method and device for washing of lime mud |
| 12/28/2006 | US20060288963 Arrangement in recovery boiler |
| 12/21/2006 | WO2006134235A1 Flotation cell |
| 12/07/2006 | WO2006128950A1 Process for producing mechanical pulp suitable for paper or cardboard making |
| 12/07/2006 | US20060272786 Method and apparatus for removing gas from particulated material |
| 12/07/2006 | CA2607178A1 Process for producing mechanical pulp suitable for paper or cardboard making |
| 12/06/2006 | EP1728919A1 Arrangement in recovery boiler |
| 12/06/2006 | EP1611281B1 Purification of alkaline washing liquid |
| 12/02/2006 | CA2547491A1 Arrangement in recovery boiler |
| 11/29/2006 | EP1726712A1 Arrangement in recovery boiler |
| 11/23/2006 | WO2006123996A1 Process for deinking recycled fibers and use of an acid in deinking |
| 11/09/2006 | US20060249098 Arrangement in recovery boiler |
| 11/02/2006 | EP1716288A1 Modifying cellulose fibres by using amphoteric cellulose derivative |
| 10/26/2006 | WO2006111607A1 An apparatus for distruibuting a pulp flow |
| 10/18/2006 | EP1711655A1 A method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification |
| 09/27/2006 | EP1704277A1 Feed of a mixture of chips and fluid from a low-pressure system to a high-pressure system |
| 09/21/2006 | US20060207733 Method and system for controlling the addition of oxygen gas and alkali during oxygen gas delignification |
| 08/30/2006 | EP1694909A1 Method and plant for handling a mixture of liquor and soap, and a plant for conversion of fibre material to pulp |
| 07/20/2006 | US20060159551 Arrangement for adjusting rotor position in a roting sluice |
| 07/20/2006 | US20060157087 Smelt is removed from the boiler via a smelt spout surrounded outside the boiler by a hood and a dispersion medium, preferably steam, is fed into the smelt flow falling from the smelt spout for shattering the smelt flow; wall of the hood is washed with liquid |
| 07/19/2006 | EP1681512A2 A method and arrangement in connection with a chemical recovery boiler |
| 07/13/2006 | WO2006072653A1 Method for controlling a pulping process |
| 07/13/2006 | CA2592887A1 Method for controlling a pulping process |
| 07/06/2006 | WO2006071165A1 A method for oxygen delignification of cellulose pulp at high pressure in several steps |
| 07/06/2006 | WO2006071164A1 Method for oxygen delignification of cellulose pulp at high pressure |
| 07/06/2006 | WO2006071163A1 Method for oxygen delignification of cellulose pulp by mixing of chemicals |
| 07/06/2006 | CA2559362A1 Method for oxygen delignification of cellulose pulp by mixing of chemicals |
| 07/06/2006 | CA2553539A1 A method for oxygen delignification of cellulose pulp at high pressure in several steps |
| 06/28/2006 | CN1261641C Method for separating hemicelluloses from biomass containing hemicelluloses and biomass and hemicelluloses obtained by said method |
| 05/26/2006 | WO2006053948A1 A method and apparatus for processing wood chips |
| 05/26/2006 | WO2006053939A1 Improved methods and devices for the fabrication of cellulose |
| 05/26/2006 | CA2586338A1 A method and apparatus for processing wood chips |
| 04/19/2006 | EP1366231B1 Method for separating hemicelluloses from a biomass containing hemicelluloses |
| 04/13/2006 | WO2006038863A1 Method for separating lignin from a lignin containing liquid/slurry |
| 04/13/2006 | WO2006037860A1 Improved alkaline process and system for producing pulp |
| 04/13/2006 | WO2006037858A1 A method and a device for preparing cellulose pulp |
| 04/13/2006 | WO2006037857A1 A method and a device for preparing cellulose pulp |
| 04/13/2006 | CA2581923A1 Improved alkaline process and system for producing pulp |
| 04/13/2006 | CA2580834A1 Method for separating lignin from a lignin containing liquid/slurry |
| 04/06/2006 | WO2005059242A8 Method and plant for handling a mixture of liquor and soap, and a plant for conversion of fibre material to pulp |
| 04/06/2006 | US20060070711 Low pH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture |
| 04/06/2006 | US20060070710 Method and a device for preparing cellulose pulp |
| 04/05/2006 | EP1643031A1 Processes for making compositions for conversion to lyocell fibers |
| 04/05/2006 | EP1643030A1 Processes for making compositions for conversion to lyocell fibers |
| 03/30/2006 | US20060065377 High PH treatment of pulp in a bleach sequence to produce pulp having low D.P. and low copper number for use in lyocell manufacture |
| 03/23/2006 | WO2006031175A1 Method for separating lignin from black liquor |
| 03/23/2006 | CA2578382A1 Method for separating lignin from black liquor |
| 03/16/2006 | WO2006027414A1 Apparatus and method for washing pulps |
| 03/16/2006 | CA2578004A1 Apparatus and method for washing pulps |
| 03/02/2006 | WO2006021618A1 Method for manufacturing pulp from classified wood material |
| 02/14/2006 | CA2235325C Acid treatment of pulp at high temperature in connection with bleaching |
| 02/14/2006 | CA2064045C Oxygen bleaching of pulp |
| 01/19/2006 | WO2006006934A1 Method and arrangement for impregnating chips |
| 01/19/2006 | WO2005116329A9 Method and device for cleaning of filter |
| 01/05/2006 | WO2006001758A1 Method and arrangement for impregnation of chips |
| 01/04/2006 | EP1611281A1 Purification of alkaline washing liquid |
| 12/29/2005 | WO2005124016A1 Process for deinking waste paper |
| 12/29/2005 | CA2567626A1 Process for deinking waste paper |
| 12/22/2005 | US20050279468 Method and system for feeding cellulose chips to a high pressure continuous cooking system |
| 12/22/2005 | CA2765084A1 Method and system for feeding cellulose chips to a high pressure continuous cooking system |
| 12/08/2005 | WO2005116329A1 Method and device for cleaning of filter |
| 12/07/2005 | EP1601832A1 An arrangement for adjusting rotor position in a roting sluice |
| 12/01/2005 | US20050263108 Retractable liquor gun holder for a recovery furnace |
| 12/01/2005 | US20050263047 Port rodder with velocity damper |
| 11/10/2005 | WO2005106112A1 Method and apparatus for removing gas from particulated material |
| 11/10/2005 | CA2528772A1 Method and apparatus for removing gas from particulated material |