| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 04/17/2013 | CN103046416A System for recovering foul and waste heat steam from high-consistency pulping production line for pulping by PRC(preconditioning refining chemical)-APMP(alkaline peroxide mechanical pulp) |
| 04/17/2013 | CN103046415A Rapid thermal-cracking treatment process for papermaking black liquor |
| 04/16/2013 | US8419897 Method for producing crude tall oil by soap washing with calcium carbonate removal |
| 04/10/2013 | CN202865675U Pulping and paper-making black fluid pretreatment device capable of recycling lignin |
| 04/10/2013 | CN103031763A Comprehensive utilization technology of biomass raw materials |
| 04/09/2013 | CA2723416C Method and equipment for treatment of black liquor at pulp mill |
| 04/09/2013 | CA2707024C Use of chemical pulp mill steam stripper off gases condensate as reducing agent in chlorine dioxide production |
| 04/03/2013 | CN103015246A Method for comprehensively using pulping waste water by sulfite method |
| 03/28/2013 | WO2013040747A1 Method for comprehensively utilizing solid waste during soda recovery in papermaking industry |
| 03/27/2013 | CN202830624U Low-energy-consumption thick white water pipeline system for papermaking |
| 03/27/2013 | CN202830623U Treatment system for paper pulp tailings and waste white paper |
| 03/27/2013 | CN102997252A Boiler arrangement |
| 03/27/2013 | CN102995479A Method for processing exhaust gas of bamboo wood dissolving pulp |
| 03/27/2013 | CN101484633B Apparatus for cleaning a smelt spout of a combustion device |
| 03/27/2013 | CN101451324B Pulp and black liquor prepared by grass type raw material, preparation method and use thereof |
| 03/27/2013 | CN101341107B Polyareneazole/thermoset pulp and methods of making same |
| 03/20/2013 | CN102985610A Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
| 03/15/2013 | CA2784379A1 Ultraviolet irradiation device |
| 03/14/2013 | WO2013036190A1 Process for treating hardwood black liquor and hardwood black liquor treated according to the process |
| 03/14/2013 | CA2784380A1 Ultraviolet irradiation apparatus |
| 03/13/2013 | EP2567022A1 Method and system for pulp processing using cold caustic extraction with alkaline filtrate reuse |
| 03/13/2013 | EP2566595A1 Biomasses for the production of alternative petrochemical feedstock |
| 03/13/2013 | EP2044184B1 Production of a refinery feedstock from soaps produced during a chemical pulping process |
| 03/13/2013 | CN202786926U Black liquor tank used for extracting saponified matter |
| 03/06/2013 | CN102953286A Treating method for pulping black liquor |
| 03/06/2013 | CN102277769B Technology for heating and processing black liquor in alkali recovery |
| 02/28/2013 | WO2012173566A9 Gasification reactor comprising a pressure absorbing compliant structure |
| 02/27/2013 | CN102943404A Black liquor treatment method combining lignin extraction and synthesis gas production |
| 02/13/2013 | CN202725374U Reflection-type black liquid spray gun shower nozzle |
| 02/13/2013 | CN102926268A Normal-pressure low-temperature clean pulping process |
| 02/13/2013 | CN102191709B Recovery method for mixed alkalie in cotton pulp black liquor and reed pulp black liquor |
| 02/13/2013 | CN101675191B Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators |
| 02/06/2013 | EP2553166A1 Gasification of sulphite thick liquor |
| 02/06/2013 | EP2553012A2 Novel thermoplastic composite material |
| 02/05/2013 | CA2767386C Fractionation of a waste liquor stream from nanocrystalline cellulose production |
| 01/30/2013 | EP2550393A2 Improved bctmp filtrate recycling system and method |
| 01/30/2013 | CN102899952A Descaling method for plate-type falling-film evaporator |
| 01/24/2013 | WO2012147094A8 Method and system for extraction of black liquor from a horizontal tube continuous digester |
| 01/22/2013 | US8357873 Plasma whirl reactor apparatus and methods of use |
| 01/16/2013 | CN202671954U Recovery processing system for cotton pulp black liquid alkali |
| 01/16/2013 | CN102884248A Gasification of sulphite thick liquor |
| 01/16/2013 | CN102877351A Treatment method of high concentration waste alkali solution |
| 01/16/2013 | CN102877350A Black liquor treatment method by lignin extraction and alkali recovery |
| 01/16/2013 | CN102877349A Circular treatment method of acid filtrate from pulping black liquor |
| 01/16/2013 | CN102877348A Method for recycling lignin from low-boiling alcohol method pulping waste liquor |
| 01/10/2013 | WO2013003941A1 Process for the treatment of black liquor |
| 01/09/2013 | CN102864674A Device and method for recycling gasified and burned alkali for straw pulp papermaking black liquor circulating fluidized bed |
| 01/09/2013 | CN102249436B Method for concentrating CMP (chemi-mechanical pulp) waste liquid by using membrane process |
| 01/09/2013 | CN101629393B Film-falling crystallization and evaporation process of pulping black liquor |
| 01/08/2013 | US8349130 Process for treating pulp mill condenstates using a hollow fiber contactor |
| 01/03/2013 | WO2013002708A1 Method for purifying lignin |
| 01/03/2013 | WO2013002687A1 Method for lignin separation from black liquor comprising removal of sulphur compounds from formed water effluent |
| 01/03/2013 | CA2840337A1 Method for lignin separation from black liquor comprising removal of sulphur compounds from formed water effluent |
| 01/02/2013 | CN102852028A Method for low carbon cyclic utilization of oil palm waste via RBMP process and manufacture of mechanical paste via continuous bleaching |
| 01/02/2013 | CN102852021A Black liquor tank used in saponification product extraction, and saponification product extraction method |
| 01/02/2013 | CN102852020A Integrated combination device for physicochemical treatment of black liquid |
| 12/27/2012 | WO2012177198A1 Method for lignin separation from black liquor comprising multiple acidification steps |
| 12/27/2012 | WO2012175796A1 Integrated biorefinery plant for the production of biofuel |
| 12/27/2012 | WO2012120184A3 Separation of lignin from plant material |
| 12/27/2012 | CA2839864A1 Method for lignin separation from black liquor comprising multiple acidification steps |
| 12/26/2012 | CN101768887B Circular utilization method of straw in pulping and papermaking processes |
| 12/20/2012 | WO2012174094A1 Aqueous catalyst sulfiding process |
| 12/20/2012 | WO2012173566A1 Gasification reactor comprising a pressure absorbing compliant structure |
| 12/20/2012 | CA2838995A1 Aqueous catalyst sulfiding process |
| 12/19/2012 | CN102226321B Black liquor mixer |
| 12/18/2012 | CA2540870C Desulphurization of odorous gases of a pulp mill |
| 12/06/2012 | US20120305208 Process for Recovering Molybdate or Tungstate from Aqueous Solutions |
| 12/06/2012 | US20120305207 Method for vapor phase pulping with alcohol and sulfur dioxide |
| 12/04/2012 | US8324523 Plasma whirl reactor apparatus and methods of use |
| 11/29/2012 | WO2012161865A1 Process for treating lignin |
| 11/28/2012 | EP2527532A1 Method of processing of stalks of fibre crops |
| 11/27/2012 | CA2637008C Apparatus and method for a liquor gun |
| 11/27/2012 | CA2584054C Boiler arrangement |
| 11/21/2012 | CN202543715U Heat recovery system used in paper manufacturing industry |
| 11/21/2012 | CN102154874B Replacement cooking pulping method |
| 11/21/2012 | CN101939574B Hose valve for feeding fine grained material |
| 11/20/2012 | US8313716 Spinning fluids reactor |
| 11/14/2012 | CN102776797A Neutralizing treatment method of pulping black liquor and synchronous acidic water solution |
| 11/13/2012 | US8308899 Shatter jet nozzle with multiple steam sources and method for disrupting smelt flow to a boiler |
| 11/08/2012 | WO2012150899A1 Gasification of bio-oil and alkali containing energy rich aqueous solutions from pulp mills |
| 11/08/2012 | CA2834052A1 Gasification of bio-oil and alkali containing energy rich aqueous solutions from pulp mills |
| 11/07/2012 | EP2519620A1 A method of separating, from a mixture of black liquor and tall oil soap product, concentrated portions of tall oil soap product and arrangements for said concentrated tall oil soap product and/or separated black liquor |
| 11/07/2012 | CN101838945B Papermaking wastewater recycling method |
| 11/01/2012 | WO2012147094A1 Method and system for extraction of black liquor from a horizontal tube continuous digester |
| 10/31/2012 | EP2516731A2 Method and process for dry discharge in a pressurized pretreatment reactor |
| 10/31/2012 | CN102758375A Pretreatment method of chemical-mechanical pulping effluent |
| 10/24/2012 | CN102747641A Alkali recycling treatment system for cotton pulp dreg black liquor |
| 10/24/2012 | CN102747640A Method for recycling raffinate and sewage caused by papermaking and pulping |
| 10/17/2012 | CN102733231A Pulping heat recycling device |
| 10/17/2012 | CN102733230A Process for producing high-purity ammonium lignin by taking papermaking black liquid as material |
| 10/10/2012 | CN102720086A Paper making black liquor recycling zero discharge process adopting rotary membrane treatment |
| 10/10/2012 | CN102094345B Pulp-water separation recycling device for papermaking wastewater |
| 10/03/2012 | CN102704307A Paper mill black liquor treatment method |
| 10/03/2012 | CN101760974B Process for performing ammonium sulfite pulping by using sulfur-containing flue gas absorber |
| 10/02/2012 | CA2584050C Combustion air system for recovery boilers, burning spent liquors from pulping processes |
| 09/26/2012 | CN101939482B System for reception and transport of lime mud from a white liquor filter |
| 09/25/2012 | US8273212 Method for kraft pulp production where hemicelluloses are returned |
| 09/20/2012 | WO2012123644A1 Conditioning of so2-ethanol-water spent liquor for fermentation by clostridia |
| 09/20/2012 | CA2830436A1 Conditioning of so2-ethanol-water spent liquor for fermentation by clostridia |
| 09/19/2012 | EP2499296A1 Liquid recovery and purification in biomass pretreatment process |