| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 02/16/2011 | CN201746725U Evaporation and concentration device of black liquid in paper making industry |
| 02/09/2011 | CN101358436B Banana tree paper manufacture technique, slurry storage technique and sewage disposal technique thereof by soft chemistry method |
| 02/03/2011 | DE102009028041A1 Entschäumerformulierungen Defoamer |
| 01/26/2011 | EP2276695A1 Direct synthesis of aqueous hydrogen peroxide solution at the site of a paper mill |
| 01/26/2011 | CN201722560U Water cyclic utilization and fiber extraction processor in toilet paper production |
| 01/26/2011 | CN1886552B Methods for producing pulp and treating black liquor |
| 01/26/2011 | CN101476257B Method for extracting lignose from papermaking black liquor |
| 01/19/2011 | CN101952504A A method for separating lignin from black liquor, a lignin product, and use of a lignin product for the production of fuels or materials |
| 01/13/2011 | WO2011004855A1 Method for manufacturing calcium carbonate by causticization using fired shells |
| 01/12/2011 | CN101535565B A method and equipment for the evaporation of black liquor that is obtained from a digestion process during the production of cellulose pulp |
| 01/11/2011 | US7867360 Generation of active polysulphide with manganese and bismuth catalysts |
| 01/06/2011 | WO2011002354A1 Process for improved leaching of electrostatic precipitator ash from a recovery boiler |
| 01/05/2011 | CN201695268U Sampling device for molten pulp of alkali recovery boiler |
| 01/05/2011 | CN101939574A Hose valve for feeding fine grained material |
| 01/05/2011 | CN101939482A System for reception and transport of lime mud from a white liquor filter |
| 01/05/2011 | CN101619550B Treatment method of high-yield pulping waste liquid for enhancing pulp strength |
| 01/05/2011 | CN101100818B Pulping technique for straw fibre |
| 01/04/2011 | CA2627846C Process for bleaching lignocellulose pulp |
| 01/04/2011 | CA2589566C Method to lower the release of hazardous air pollutants from kraft recovery process |
| 01/04/2011 | CA2505525C Method and arrangement in making of mechanical pulp |
| 12/29/2010 | CN101932769A Method and equipment for decomposing biomass molecular components continuously |
| 12/29/2010 | CN101929090A Novel method for flocculating papermaking black liquor lignin |
| 12/22/2010 | CN201678895U Alkali recovery device for gasifying and directly causticizing pulping black liquor |
| 12/16/2010 | WO2010143997A1 Method for precipitating lignin from black liquor by utilizing waste gases |
| 12/16/2010 | WO2010142146A1 Process for producing high-strength corrugated base paper |
| 12/16/2010 | CA2763447A1 Method for precipitating lignin from black liquor by utilizing waste gases |
| 12/15/2010 | CN101914863A Process for extracting papermaking black liquor by steaming |
| 12/15/2010 | CN101163833B Apparatus and method for producing energy at a pulp mill |
| 12/15/2010 | CN101063278B Method for hybrid giant napier producing in oxygen free radical doffing/bleaching integrated reactor with dried bananas stalk |
| 12/08/2010 | CN101519853B Method for processing alkaline pulping black liquor in paper making process |
| 12/08/2010 | CN101492892B Method for producing paper-pulp by using cotton stalk core or kendir stalk core |
| 12/08/2010 | CN101487196B Ammonium lignosulphonate production method |
| 12/08/2010 | CN101165267B Pulping technique for straw fibre |
| 12/01/2010 | CN101903590A Method for kraft pulp production where hemicelluloses are returned |
| 12/01/2010 | CN101899795A Method for improving utilization ratio of chemi-mechanical pulp bleaching filtrate |
| 12/01/2010 | CN101899794A Green process for extracting fibers from plants |
| 11/18/2010 | WO2010131184A1 Recovery of tetracosanol from a mixture derived from tall oil pitch |
| 11/10/2010 | EP2247785A1 A method for separating lignin from black liquor, a lignin product, and use of a lignin product for the production of fuels or materials |
| 11/10/2010 | EP2247784A2 Process for generating a hydrocarbon feedstock from lignin |
| 11/10/2010 | EP2247783A2 Process for generating a hydrocarbon feedstock from lignin |
| 11/10/2010 | CN101880983A Inspissation treating method and device for black liquor |
| 11/10/2010 | CN101880982A Vessel equipment for precipitation separation of water, printing ink and sludge |
| 11/10/2010 | CN101487197B Straw pulp black liquor concentration process |
| 11/03/2010 | CN201618513U Flue gas desulfurization and waste liquor treatment system for boilers |
| 11/03/2010 | CN101876153A Process for spraying and drying kraft pulp black liquor |
| 10/27/2010 | CN101363201B Method for preparing edible fruit and vegetable dietary fiber paper |
| 10/20/2010 | CN101255664B Method for pulping of non-lumber fibre |
| 10/13/2010 | EP2238084A1 Waste water treatment from a biomass-to-liquid process comprising synthesis gas production and integrated factory facility |
| 10/13/2010 | CN101861426A Use of polysulfide in modified cooking |
| 10/07/2010 | WO2010114468A1 Method and arrangement for clarifying green liquor |
| 10/06/2010 | EP2235255A1 System for reception and transport of lime mud from a white liquor filter |
| 10/06/2010 | CN1978785B Sludge dewatering method for waste paper deinking technology |
| 10/05/2010 | US7806127 Smelt spout enclosure for chemical recovery boilers |
| 09/30/2010 | US20100243184 Method for treating liquid flows at a chemical pulp mill |
| 09/30/2010 | US20100243183 Method in connection with the washing of pulp at a chemical pulp mill |
| 09/29/2010 | CN201593139U Sound-eliminating device |
| 09/29/2010 | CN101845766A Method and device for gasifying pulping black liquor and reclaiming directly causticized alkali |
| 09/29/2010 | CN101220565B Pulping method with zero discharge of sewage water |
| 09/23/2010 | WO2010106077A1 Composition for inhibiting calcium salt scale formation |
| 09/23/2010 | CA2755758A1 Composition for inhibiting calcium salt scale formation |
| 09/22/2010 | CN201588146U Inner wall protection device for soda-recovery-furnace dissolving tank |
| 09/22/2010 | CN101838946A Method for comprehensively treating silicon tetrachloride and papermaking pulping black liquor |
| 09/22/2010 | CN101838945A Papermaking wastewater recycling method |
| 09/16/2010 | WO2010104458A1 A shaped cellulose manufacturing process combined with a pulp mill recovery system |
| 09/16/2010 | CA2754521A1 A shaped cellulose manufacturing process combined with a pulp mill recovery system |
| 09/15/2010 | CN201581291U Device for recycling fiber in paper-making white water |
| 09/15/2010 | CN201578966U Tail gas treatment system of alkali recovery boiler |
| 09/15/2010 | CN101831827A Preparation method of paper making black liquid semi-coke |
| 09/15/2010 | CN101831826A Paper making pulping black liquid crystallization and evaporation method |
| 09/15/2010 | CN101210395B Method for treating straw slurry black liquor by using ammonium sulfite method |
| 09/09/2010 | US20100224335 Heat recovery from spent cooking liquor in a digester plant of a chemical pulp mill |
| 09/09/2010 | US20100224334 Method for treating liquid flows at a chemical pulp mill |
| 09/08/2010 | EP2225415A1 Method for kraft pulp production where hemicelluloses are returned |
| 09/08/2010 | CN101824767A Heat recovery from spent cooking liquor in a digester plant of a chemical pulp mill |
| 09/08/2010 | CN101824766A Biological pulp and paper making wastewater zero discharge technique |
| 09/05/2010 | CA2692089A1 Heat recovery from spent cooking liquor in a digester plant of a chemical pulp mill |
| 09/01/2010 | CN101381968B Method for enhancing extraction rate of black liquor |
| 08/25/2010 | CN101812813A Method and device for treating paper-making black liquid acid-precipitation waste liquid film |
| 08/25/2010 | CN101285277B Hyperfiltration process of pulping and digesting black liquor |
| 08/25/2010 | CN101187182B Novel use of waste water of BVT pulping in process for detergent alkaline for recovering white mud |
| 08/24/2010 | USRE41552 Composition for the production of improved pulp |
| 08/19/2010 | WO2010093495A1 Adjustable, multiple splash plate liquor guns |
| 08/19/2010 | WO2010092430A1 A method and a system for optimization of parameters for a recovery boiler |
| 08/19/2010 | WO2010091492A1 Methanol purification method and apparatus |
| 08/19/2010 | CA2752471A1 A method and a system for optimization of parameters for a recovery boiler |
| 08/19/2010 | CA2751602A1 Methanol purification method and apparatus |
| 08/19/2010 | CA2750542A1 Adjustable, multiple splash plate liquor guns |
| 08/18/2010 | EP2217839A1 Hose valve for feeding fine grained material |
| 08/18/2010 | CN101328693B Clean production method of chemical pulping paper making and aluminum oxide cogeneration |
| 08/17/2010 | US7775958 Sanitary tissue paper, method of producing the same, carton box for sanitary tissue paper, sanitary tissue paper package, interfolder, and apparatus and method of conveying sanitary tissue paper package |
| 08/17/2010 | CA2477848C Process for producing furfural, formic acid and acetic acid from spent pulp-cooking liquor |
| 08/12/2010 | US20100200182 Process for refining and producing cellulose, lignin and xylose from biomass material |
| 08/11/2010 | CN101798771A Method and system to generate steam in a digester plant of a chemical pulp mill |
| 08/09/2010 | CA2692090A1 Method of generating steam in a digester plant of a chemical pulp mill |
| 08/04/2010 | EP2212468A1 Use of polysulfide in modified cooking |
| 07/29/2010 | US20100189614 Method for kraft waste reclamation |
| 07/28/2010 | CN101787656A Clean high-valued utilization method for straw resources |
| 07/28/2010 | CN101786064A Handling device for liquor guns of a recovery boiler plant, a recovery boiler plant, and a method in a recovery boiler |
| 07/21/2010 | CN101784722A Use of cyclodextrins for odor control in papermaking sludges, and deodorized sludge and products |
| 07/14/2010 | CN101775751A Alkali recovery method by combusting bagasse black liquor |