| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 04/11/2012 | EP1244843B1 Method and apparatus for controlling a causticizing process |
| 04/04/2012 | CN101857266B 一种利用回转窑气化炉的制浆黑液直接苛化碱回收方法 A direct use of pulping liquor caustic soda recovery method rotary kiln gasifier |
| 03/29/2012 | US20120073772 Gasification of sulphite thick liquor |
| 03/29/2012 | CA2812685A1 Thermoplastic lignin for producing carbon fibers |
| 03/28/2012 | EP2434051A1 Steam cycle efficiency improvement with pre-economizer |
| 03/28/2012 | CN202175886U 熔物溜槽 Melt material chute |
| 03/28/2012 | CN102395926A A method and a system for optimization of parameters for a recovery boiler |
| 03/28/2012 | CN102392382A Method of reducing aluminosilicate scale in a bayer process |
| 03/28/2012 | CN102392381A Chemi-mechanical pulp waste liquid alkaline recycling pretreatment method |
| 03/28/2012 | CN101374994B Method and arrangement for feeding chemicals into a process stream |
| 03/27/2012 | CA2626095C Production of a refinery feedstock from soaps produced during a chemical pulping process |
| 03/21/2012 | EP2430233A1 Method for producing pulp |
| 03/21/2012 | CN202170447U 化机浆蒸发预处理生产线 Pretreatment evaporation mechanical pulp production line |
| 03/21/2012 | CN202170446U 化机浆碱回收预处理生产线 Recovery mechanical pulp pretreatment production line |
| 03/14/2012 | EP2427598A1 Process for improved leaching of electrostatic precipitator ash from a recovery boiler |
| 02/29/2012 | EP2423168A1 Method for processing service water in the production of paper |
| 02/29/2012 | CN102363931A Method for improving solid content of non-wood pulp black liquor |
| 02/29/2012 | CN102363930A Method for preparing active carbon during alkali recovery of papermaking black liquor |
| 02/23/2012 | WO2012022949A1 Thermal treatment |
| 02/23/2012 | CA2806630A1 Thermal treatment |
| 02/08/2012 | EP2414585A1 Method and arrangement for clarifying green liquor |
| 02/08/2012 | CN202139501U 一种碱回收炉溜槽的循环冷却装置 One kind of recovery boiler circulating cooling device chute |
| 02/08/2012 | CN202139500U 零废水排放复合环保造纸装置 Zero wastewater discharge composite green paper device |
| 02/02/2012 | WO2012014213A1 Method for production of cellulose nano crystals from cellulose-containing waste materials |
| 02/02/2012 | CA2806815A1 Method for production of cellulose nano crystals from cellulose-containing waste materials |
| 02/01/2012 | EP1794363B1 Method for separating lignin from black liquor |
| 02/01/2012 | CN102341413A Shaped cellulose manufacturing process combined with pulp mill recovery system |
| 02/01/2012 | CN102337696A Method for removing silicon in green liquid through cooperation of calcium oxide and aluminum salt |
| 01/31/2012 | CA2694223C Process for treating pulp mill condensates using a hollow fiber contactor |
| 01/25/2012 | EP2408721A1 Composition for inhibiting calcium salt scale formation |
| 01/25/2012 | CN1974858B Three-dimensional electrode for electrolysis, ion exchange membrane electrolytic cell and method of electrolysis using three-dimensional electrode |
| 01/18/2012 | EP2406291A1 A shaped cellulose manufacturing process combined with a pulp mill recovery system |
| 01/12/2012 | WO2012005677A1 Process for production of precipitated lignin from black liquor and precipitated lignin produced by the process |
| 01/12/2012 | CA2804186A1 Process for production of precipitated lignin from black liquor and precipitated lignin produced by the process |
| 01/11/2012 | CN102316993A Adjustable, multiple splash plate liquor guns |
| 01/11/2012 | CN102316961A Methanol purification method and apparatus |
| 01/11/2012 | CN102312388A Method of comprehensive utilization of black liquor from alkaline pulping |
| 01/04/2012 | CN202099667U Air guide sleeve for waste steam of vibrating screen |
| 01/04/2012 | CN202099666U Foam breaker |
| 01/03/2012 | US8088199 Method for kraft waste reclamation |
| 12/29/2011 | WO2011162420A1 Method for recovering lignin in the neutral range from spent pulp cooking liquor |
| 12/28/2011 | CN202090227U 新型无缝融物溜槽 The new seamless melts chute |
| 12/28/2011 | CN101451315B 一种禾草类秸秆综合利用方法 Straw utilization method grasses |
| 12/21/2011 | EP2396120A1 Adjustable, multiple splash plate liquor guns |
| 12/21/2011 | EP2396105A1 Methanol purification method and apparatus |
| 12/21/2011 | CN202081332U 一种制浆造纸蒸解釜黑液过滤网 One kind of pulp and paper Digester kettle black liquor filter |
| 12/15/2011 | WO2011119423A3 Improved bctmp filtrate recycling system and method |
| 12/15/2011 | US20110303378 Method for contaminant removal in paper production |
| 12/15/2011 | CA2800859A1 Process for the separation of lignins and sugars from an extraction liquor |
| 12/14/2011 | EP2024559B1 Apparatus for cleaning a smelt spout of a combustion device |
| 12/14/2011 | CN102277769A 一种碱回收中的黑液加热处理工艺 One kind of black liquor heating Recovery Process |
| 12/14/2011 | CN102277768A 制浆黑液的高温高浓提取装置及方法 The high concentration of high-temperature black liquor pulp extraction device and method |
| 12/14/2011 | CN102277767A 一种造纸黑液处理方法 An approach paper black liquor |
| 12/08/2011 | US20110297340 Method for separating lignin from black liquor |
| 12/07/2011 | EP1664421B1 Chemimechanical desilication of nonwood plant materials |
| 12/07/2011 | CN202064225U 黑液混合器 Liquor mixer |
| 12/07/2011 | CN102268831A 废纸回收设备中的余热再利用系统 Waste heat recovery equipment in the recycling system |
| 12/07/2011 | CN102266681A 一种用于造纸黑液中的消泡剂 A black liquor used in defoamers |
| 12/07/2011 | CN101736639B 提高碱法草浆黑液浓度的工艺及设备 Increase the concentration of alkaline black liquor technology and equipment |
| 11/30/2011 | CN202055085U 造纸废水热回收装置 Paper waste heat recovery |
| 11/23/2011 | CN102251428A Method for handling black liquor produced by handling straw-like lignocellulosic materials |
| 11/23/2011 | CN102249436A Method for concentrating CMP (chemi-mechanical pulp) waste liquid by using membrane process |
| 11/16/2011 | EP2386621A2 Method and system of gasification |
| 11/16/2011 | CN202039239U Rotational-flow fixed type black liquor spraying pistol |
| 11/10/2011 | WO2011138633A1 Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
| 11/10/2011 | US20110272108 Process for producing pulp and at least one organic liquid or liquefiable material of value with offgas recycling |
| 11/09/2011 | CN102239294A A method and device for emptying the floor of a black liquor recovery boiler |
| 11/09/2011 | CN101748635B Method for preparing slurry by replacement cooking |
| 11/08/2011 | CA2492824C Process and apparatus for producing thermal and electric energy |
| 11/04/2011 | CA2744250A1 Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
| 11/02/2011 | EP2382353A2 Process and apparatus for treating green liquor |
| 11/02/2011 | CN202023107U Black liquor heater |
| 11/02/2011 | CN102230293A Evaporation pretreatment process method for alkaline peroxide mechanical pulp |
| 11/02/2011 | CN102230292A Circulation cooling device for chute of soda recovery furnace |
| 10/27/2011 | WO2011131144A1 Mixed fuel containing lignin, production process thereof and fuel injector using the same |
| 10/26/2011 | CN102226321A Black liquor mixer |
| 10/26/2011 | CN101245565B Zero discharge clean method for producing corn cane man-made fiber pulp, xylitol |
| 10/19/2011 | EP1482087B1 A process of recovering alkali from black liquor of papermaking |
| 10/19/2011 | CN202012018U High-efficiency cooling fusant chute |
| 10/19/2011 | CN202012017U Cooling water recycling system in impregnating production |
| 10/19/2011 | CN102220721A Method for water conservation and scale prevention in pulping of grass fiber raw materials |
| 10/19/2011 | CN101545226B Method for improving bagasse alkaline cooking effect through wet process with CEH bleaching waste liquor |
| 10/18/2011 | US8038906 Process for the preparation of synthesis gas from black liquor |
| 10/13/2011 | WO2011037967A3 Process for recovering lignin |
| 10/13/2011 | US20110247771 Method and apparatus for processing black liquor of pulp mill |
| 10/06/2011 | WO2011123034A1 Gasification of sulphite thick liquor |
| 10/06/2011 | WO2011084761A3 Method and process for dry discharge in a pressurized pretreatment reactor |
| 10/06/2011 | CA2791466A1 Gasification of sulphite thick liquor |
| 09/29/2011 | WO2011117484A2 Novel thermoplastic composite material |
| 09/28/2011 | EP2367974A1 Modification of biomass for efficient conversion to fuels |
| 09/28/2011 | CN201990892U 纸张生产中的二次蒸汽回用系统 Paper production in the secondary steam reuse system |
| 09/22/2011 | WO2011113329A1 Circular utilization method of straw in pulping and papermaking process |
| 09/22/2011 | US20110226427 Method of Recovering Aqueous N-methylmorpholine-N-Oxide Solution Used in Production of Lyocell Fiber |
| 09/22/2011 | CA2792315A1 Circular utilization method in pulping and papermaking processes with straw |
| 09/21/2011 | CN201981434U 臭气收集槽 Odor collection tank |
| 09/21/2011 | CN102191709A Recovery method for mixed alkalie in cotton pulp black liquor and reed pulp black liquor |
| 09/21/2011 | CN101597871B Paper pulping bleaching and waste water purification integration technology |
| 09/15/2011 | WO2011110746A1 Method for producing pulp |
| 09/15/2011 | US20110223091 Spinning Fluids Reactor |
| 09/15/2011 | CA2761757A1 Method for producing pulp |