| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 10/31/2013 | US20130284390 In-line drainer with shaped screen slots |
| 10/25/2013 | CA2811793A1 In-line drainer with shaped screen slots |
| 10/24/2013 | WO2013156668A1 Method and arrangement for intensifying and controlling evaporation |
| 10/23/2013 | CN103362011A Pretreatment method of boiling black liquor in diffusion dialysis recovery pulp manufacturing |
| 10/23/2013 | CN103362010A Diffusion dialysis pretreatment technology of black liquor electrodialysis alkali recovery in pulp manufacturing |
| 10/23/2013 | CN102635011B Recycling comprehensive utilization technology for pulping black liquor or red liquor |
| 10/16/2013 | CN103352389A Preprocessing method for black liquor in diffusion dialysis recycling pulp manufacture |
| 10/16/2013 | CN103352388A Preprocessing technology for black liquor in diffusion dialysis recycling pulp manufacture |
| 10/16/2013 | CN103351068A Pre-treatment technology of ultrafiltration for electrodialytic alkali recovery of black liquor in pulp manufacturing |
| 10/09/2013 | EP2647987A1 Electrode for the analysis of liquors during paper production, and method of using it |
| 10/09/2013 | CN203229827U White water recovery system |
| 10/09/2013 | CN102425075B Device and method for extracting and separating lignin in papermaking black liquor |
| 10/03/2013 | WO2013144438A1 Flue gas heat recovery method and system |
| 10/01/2013 | US8545674 Method to use heat energy from black liquor |
| 10/01/2013 | CA2580834C Method for separating lignin from a lignin containing liquid/slurry |
| 09/25/2013 | CN203212923U Cellulosic biomass ethanol horizontal tube continuous digester steam explosion device |
| 09/25/2013 | CN103321082A Forward osmosis concentrating device of chemical-mechanical pulping black liquor and operating method of forward osmosis concentrating device |
| 09/25/2013 | CN102392381B Chemi-mechanical pulp waste liquid alkaline recycling pretreatment method |
| 09/19/2013 | WO2013137790A1 Method for lignin separation from black liquor |
| 09/19/2013 | WO2013135485A1 Method for producing water-insoluble lignin agglomerates |
| 09/18/2013 | CN103306154A Treatment and utilization method of pulping black liquor |
| 09/18/2013 | CN102421961B Process for improved leaching of electrostatic precipitator ash from a recovery boiler |
| 09/18/2013 | CN102312388B Method of comprehensive utilization of black liquor from alkaline pulping |
| 09/18/2013 | CN101952504B A method for separating lignin from black liquor, a lignin product, and use of a lignin product for the production of fuels or materials |
| 09/11/2013 | CN103289750A Supercritical water low-temperature gasification device and gasification method of black liquor |
| 09/11/2013 | CN103285806A Preparation technology for silicon collectors in alkali recovery section green liquor |
| 09/11/2013 | CN101903590B Method for kraft pulp production where hemicelluloses are returned |
| 09/04/2013 | EP2632930A2 Method for production of lignin |
| 08/28/2013 | EP2630292A1 Method and arrangement for separating contaminants from liquids or vapors |
| 08/28/2013 | CN103266521A Viscosity-reducing and concentrating method of black liquor |
| 08/28/2013 | CN103266518A Method for reducing silicon content in black liquor |
| 08/28/2013 | CN101861426B Use of polysulfide in modified cooking |
| 08/27/2013 | US8518273 Method and device for cleaning of filter |
| 08/27/2013 | US8518213 Process for producing alcohol and other bioproducts from biomass extracts in a kraft pulp mill |
| 08/21/2013 | EP2627659A1 Continuous method for the precipitation of lignin from black liquor |
| 08/21/2013 | CN203144157U Novel papermaking wastewater treatment system |
| 08/15/2013 | US20130206346 Flash tank with adjustable inlet and method for adjusting inlet flow to a flash tank |
| 08/14/2013 | CN103243598A Pulping method for increasing extraction ratio of black liquor |
| 08/14/2013 | CN102720086B Paper making black liquor recycling zero discharge process adopting rotary membrane treatment |
| 08/13/2013 | CA2804538A1 Flash tank with adjustable inlet and method for adjusting inlet flow to a flash tank |
| 08/13/2013 | CA2510090C Process for high temperature peroxide bleaching of pulp with cool discharge |
| 08/07/2013 | EP2622129A2 Flue gas heat recovery system and method |
| 08/06/2013 | US8500954 Method and apparatus for processing black liquor of pulp mill |
| 07/31/2013 | CN203096500U High-consistency refining waste heat steam recovery system in PRC-APMP (preconditioning and refiner chemical treatment-alkaline peroxide mechanical pulp) pulping production line |
| 07/31/2013 | CN203090507U Plate type evaporation and condensation system for lignin recovery |
| 07/25/2013 | DE102012200990A1 Verfahren zur Rückgewinnung von Molybdat bei einer mit Molybdat katalysierten Delignifizierung von Zellstoff mit Wasserstoffperoxid A process for the recovery of molybdate at a molybdate-catalyzed delignification of pulp with hydrogen peroxide |
| 07/24/2013 | CN103215838A Process of wood pulp papermaking black liquor resourceful treatment |
| 07/18/2013 | WO2013068453A3 Kraft pulping process |
| 07/17/2013 | CN203065883U Soot blowing port with annular air seal of alkali recovery furnace |
| 07/17/2013 | CN103205909A Extraction technology of cotton pulp black liquor |
| 07/16/2013 | US8486224 Method for separating lignin from black liquor |
| 07/16/2013 | CA2568594C Method for producing a dissovling pulp |
| 07/10/2013 | CN203049361U Pulp intermittent replacement cooking production system |
| 07/10/2013 | CN103194925A Forward osmosis black liquor concentration device and operating method thereof |
| 07/04/2013 | WO2013071008A3 Cooled smelt restrictor at cooled smelt spout for distrupting smelt flow from the boiler |
| 07/03/2013 | EP2609036A1 Lime causticization product brightness improvement via pre-slaking |
| 07/03/2013 | CN203034300U Washer for exhaust steam of dissolving tank |
| 07/03/2013 | CN203034299U Waste-paper or primary-pulp-plate paper-making wastewater zero-discharging and recycling device |
| 07/03/2013 | CN101688362B Method for treating liquid flows at a chemical pulp mill |
| 07/02/2013 | CA2578382C Method for separating lignin from black liquor |
| 07/02/2013 | CA2567046C Central screen |
| 06/26/2013 | EP2606176A1 Thermal treatment |
| 06/26/2013 | CN102424437B Method for treating prehydrolysis liquid of bamboo dissolving pulp |
| 06/26/2013 | CN102154871B Method for pulping without producing strongly alkaline high-pollution black liquor |
| 06/18/2013 | CA2651483C Methods for carbonate pretreatment and pulping of cellulosic material |
| 06/13/2013 | WO2013082735A1 Chemical mechanical pulping method |
| 06/13/2013 | WO2012042107A3 Flue gas heat recovery system and method |
| 06/12/2013 | CN202989655U Papermaking waste liquor recovery device |
| 06/05/2013 | EP2598535A1 Method for production of cellulose nano crystals from cellulose-containing waste materials |
| 06/05/2013 | CN102493257B Masson pine dissolving pulp and production method thereof |
| 05/29/2013 | CN103124744A Method for production of cellulose nano crystals from cellulose-containing waste material |
| 05/29/2013 | CN101495404B Method for the catalytic oxidation of sulfide to sulfate |
| 05/28/2013 | CA2705774C Use of polysulfide in modified cooking |
| 05/23/2013 | US20130126485 Plasma whirl reactor apparatus and methods of use |
| 05/23/2013 | US20130126332 Plasma whirl reactor apparatus and methods of use |
| 05/21/2013 | US8444851 System for reception and transport of lime mud from a white liquor filter |
| 05/16/2013 | WO2013070130A1 Method for lignin separation from black liquor involving multiple acidification steps |
| 05/16/2013 | WO2013068453A2 Kraft pulping process |
| 05/16/2013 | CA2855127A1 Method for lignin separation from black liquor involving multiple acidification steps |
| 05/16/2013 | CA2854895A1 Cooled smelt restrictor at cooled smelt spout for distrupting smelt flow from the boiler |
| 05/15/2013 | EP2592186A1 Kraft pulping process |
| 05/15/2013 | EP2591166A1 Process for production of precipitated lignin from black liquor and precipitated lignin produced by the process |
| 05/15/2013 | CN103103860A Imitated rice paper production method |
| 05/15/2013 | CN103103846A Technology for extracting lignin from biomass raw material |
| 05/15/2013 | CN103103845A Technologies for extracting cellulose from biomass raw material and preparing biochar |
| 05/15/2013 | CN101688361B Method to remove hemicellutose from cellutosic fibres using a solution of ammonia and hydrogen peroxide |
| 05/10/2013 | WO2013066225A1 Method for the causticizing process for producing white liquor |
| 05/10/2013 | CA2854292A1 Method for the causticizing process for producing white liquor |
| 05/08/2013 | CN103088689A Zero discharging and recycling technology for waste paper or raw stock board papermaking wastewater |
| 05/08/2013 | CN103088686A Technology for preparing paper pulp and coproducing biochar from lignocellulose biomass |
| 05/01/2013 | CN202913293U Zero-emission water recycling system for recycled paper making |
| 05/01/2013 | CN103080417A Process for production of precipitated lignin from black liquor and precipitated lignin produced by the process |
| 05/01/2013 | CN103080416A Process for obtaining tall oil from a sodium sesquisulfate solution |
| 05/01/2013 | CN103074796A Alkali recovery process for paper-making black liquid |
| 05/01/2013 | CN102230292B Circulation cooling device for chute of soda recovery furnace |
| 04/24/2013 | CN202898874U Wastewater recycling system of horizontal belt for cotton pulp dreg production |
| 04/24/2013 | CN103061187A Technology of recycling white slime to refine pearl filler with sulfate process |
| 04/24/2013 | CN103061186A Treatment method for pulping black liquid and application method for product of pulping black liquid |
| 04/24/2013 | CN103061179A Comprehensive utilization process for lignocellulose biomass |
| 04/24/2013 | CN102182086B Method for preparing bamboo pulp by full-liquid-phase prehydrolysis sulfate displacement cooking process |