| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 05/27/2014 | US8734612 Method and system for high alpha dissolving pulp production |
| 05/22/2014 | WO2014077979A1 Activated carbon from boiler ash residue |
| 05/22/2014 | WO2014076361A1 Method for leaching recovery-boiler ash |
| 05/21/2014 | CN103806321A 芦苇造纸黑液中木质素的提取方法 Reed black liquor lignin extraction method |
| 05/15/2014 | WO2014072586A1 A method and a system for treating liquid flows at a chemical pulp mill |
| 05/13/2014 | US8722881 Method of synthesis of tetradentate amide macrocycle ligand and its metal-complex |
| 05/13/2014 | US8721837 Method for recovering pulping chemicals and reducing the concentration of potassium and chloride therein |
| 05/08/2014 | WO2014070861A1 Ph-induced fractionation processes for recovery of lignin |
| 05/08/2014 | WO2014070821A1 Injection of a chemical reagent into a process stream that contains lignin |
| 05/07/2014 | EP2726671A1 Method for lignin separation from black liquor comprising removal of sulphur compounds from formed water effluent |
| 05/07/2014 | CN203583280U 双网转鼓挤浆装置 Double net drum squeeze pulp unit |
| 05/07/2014 | CN203583279U 云母小浆回收利用装置 Mica small pulp recycling equipment |
| 04/30/2014 | EP2723939A1 Method for lignin separation from black liquor comprising multiple acidification steps |
| 04/30/2014 | CN203569367U Clean pulping stock solution reclaiming device |
| 04/30/2014 | CN103757965A Biological alkali recovery process for papermaking black liquor |
| 04/29/2014 | US8709204 System and process for recovering heat from weak black liquor in a wood pulping process |
| 04/29/2014 | US8709203 Fractionation of a waste liquor stream from nanocrystalline cellulose production |
| 04/29/2014 | CA2757539C Methods for beating pulp, methods for treating process waters, and methods for producing pulp and paper |
| 04/24/2014 | WO2014060651A1 Method of dissolving lignocellulosic materials |
| 04/23/2014 | EP2721360A1 Gasification reactor comprising a pressure absorbing compliant structure |
| 04/23/2014 | EP2720792A1 Aqueous catalyst sulfiding process |
| 04/16/2014 | CN203546497U Green liquor desilication device |
| 04/16/2014 | CN203546496U Green liquor desilication bag |
| 04/10/2014 | WO2014054815A1 Continuous electrolysis method by means of electrolytic bath for polysulfide manufacturing, and electrolysis device for implementing same |
| 04/08/2014 | US8691049 Method for an energy efficient production of cellulose pulp in a continuous digester |
| 04/02/2014 | CN102493252B Energy-saving process of steam-electricity pulp paper using coal gas |
| 04/01/2014 | US8685205 Flash tank with compact steam discharge assembly |
| 03/27/2014 | WO2014046895A1 Methods for conditioning pretreated biomass |
| 03/27/2014 | WO2014046893A1 Soak vessels and methods for impregnating biomass with liquid |
| 03/27/2014 | WO2014044911A1 Arrangement and method in soda recovery boiler |
| 03/26/2014 | EP2709955A1 Conditioning of so2-ethanol-water spent liquor for fermentation by clostridia |
| 03/26/2014 | CN103669071A Method for treating papermaking black liquid |
| 03/26/2014 | CN103669070A Alkali recovery process for cotton pulp dreg |
| 03/26/2014 | CN103669069A Treatment and recycle process for sulfite pulping waste liquid |
| 03/26/2014 | CN103669068A Environment-friendly water circulation papermaking equipment |
| 03/26/2014 | CN103665390A Method for extracting sodium lignin sulfonate from papermaking black liquor employing sulphur treatment |
| 03/26/2014 | CN102517952B Treatment method of digesting waste steam produced by soda pulping process |
| 03/20/2014 | WO2013135959A3 A method and a system for treating liquid flows at a chemical pulp mill |
| 03/19/2014 | CN103649410A Gasification of bio-oil and alkali containing energy rich aqueous solutions from pulp mills |
| 03/11/2014 | US8668806 Product and processes from an integrated forest biorefinery |
| 03/06/2014 | US20140060520 System and Method for Conditioning a Hardwood Pulp Liquid Hydrolysate |
| 03/05/2014 | EP2702202A1 Gasification of bio-oil and alkali containing energy rich aqueous solutions from pulp mills |
| 02/26/2014 | CN103608514A Method of recovering chemicals |
| 02/26/2014 | CN103608109A Aqueous catalyst sulfiding process |
| 02/21/2014 | CA2824076A1 System and method for reclaiming rejects in sulfite pulping |
| 02/19/2014 | CN103597139A Method and system for extraction of black liquor from a horizontal tube continuous digester |
| 02/12/2014 | CN203429499U Anti-blocking pulping waste water recycling system |
| 02/12/2014 | CN103572635A Processing and recovering process of chemical fiber pulp cellulose alkali pressed liquor |
| 02/06/2014 | US20140034260 Flash tank with compact steam discharge assembly |
| 02/05/2014 | CN103556517A Method for improving oxygen-alkali pulping effect through laccase pretreatment |
| 02/05/2014 | CN103046416B 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) |
| 02/04/2014 | US8640634 Combustion air system for recovery boilers, burning spent liquors from pulping processes |
| 01/30/2014 | WO2014018239A1 Method for recovering pulping chemicals and reducing the concentration of potassium and chloride therein |
| 01/30/2014 | US20140027076 CRP Purge Treatment |
| 01/29/2014 | CN203411846U APMP (Alkaline Peroxide Mechanical Pulp) heat recovery system |
| 01/29/2014 | CN103541260A Method for recovering hemicellulose from pulping black liquor |
| 01/23/2014 | WO2012177198A8 Method for lignin separation from black liquor comprising multiple acidification steps |
| 01/22/2014 | CN103523945A Clean production method of plant fiber product |
| 01/21/2014 | US8632657 Method for treating liquid flows at a chemical pulp mill |
| 01/21/2014 | US8632656 Method for treating liquid flows at a chemical pulp mill |
| 01/21/2014 | US8632655 Method in connection with the washing of pulp at a chemical pulp mill |
| 01/16/2014 | WO2014011089A1 Method and apparatus for obtaining strong white liquor and lime mud with low residual alkali level |
| 01/15/2014 | EP2684997A1 Vapor relief screen basket cleaning brush and method |
| 01/15/2014 | EP2683759A2 Separation of lignin from plant material |
| 01/14/2014 | CA2565358C Fiberline system and method using black liquor flashed steam |
| 01/08/2014 | EP2681358A1 Method of recovering chemicals |
| 01/08/2014 | CN203383092U Causticizing technology device for preparing precipitated calcium carbonate by recovering alkali from papermaking |
| 01/08/2014 | CN103498377A Method for removing silica in multinuclear polymeric hydroxy-aluminum green liquor |
| 12/31/2013 | US8617354 Shaped cellulose manufacturing process combined with a pulp mill recovery system |
| 12/26/2013 | US20130340960 Method and arrangement for separating contaminants from liquids or vapors |
| 12/25/2013 | CN203360925U Bamboo pulp green liquor clarifying and silica pre-removing equipment |
| 12/25/2013 | CN103469664A Green liquor flocculation and desilication method of alkali recovery working section |
| 12/24/2013 | US8613781 Lignin dewatering process |
| 12/19/2013 | WO2013187838A1 Method and equipment for measuring the filter sectors in disc filters |
| 12/18/2013 | CN203346718U Novel black liquor spray gun for alkali recycling furnace |
| 12/18/2013 | CN203346717U Cleaning water circulating system for wood chips |
| 12/17/2013 | US8607718 Recovery boiler combustion air system with intermediate air ports vertically aligned with multiple levels of tertiary air ports |
| 12/11/2013 | EP2670909A1 Method for production of dimethyl sulfone by oxidation of a methanol based medium obtained from a sulfate cellulose process |
| 12/11/2013 | CN203334110U Combined device for separating cellulose, lignin and carbohydrate |
| 12/11/2013 | CN103443355A Method of making purified methanol from a liquefied fraction obtained from a sulfate pulp process |
| 12/11/2013 | CN102659161B Process for preparing white mud calcium carbonate from green liquor recovered from wood pulp sulfate-method pulping alkali |
| 12/05/2013 | WO2013178885A1 A method of and an arrangement for oxidizing white liquor |
| 12/05/2013 | WO2013178608A1 New process and a dissolving pulp manufactured by the process |
| 12/05/2013 | CA2874901A1 New process and dissolving pulp manufactured by the process |
| 12/04/2013 | CN203320330U Papermaking black liquid filtering and extracting device |
| 12/04/2013 | CN203320329U Wastewater deinking and degumming machine |
| 12/04/2013 | CN103429814A Method for production of dimethyl sulfone by oxidation of methanol based medium obtained from sulfate cellulose process |
| 12/04/2013 | CN103429642A Separation of lignin from plant material |
| 11/21/2013 | WO2013171379A1 Recovery boiler plant of a chemical pulp mill |
| 11/21/2013 | WO2013135956A3 A method and a system for treating liquid flows at a chemical pulp mill |
| 11/20/2013 | CN203295888U Waste paper regeneration pulping device using waste water |
| 11/20/2013 | CN103397555A Modified bentonite synergic quicklime green liquor silicon removal method |
| 11/20/2013 | CN102277768B High-temperature and high-concentration extraction device and method for pulping black liquor |
| 11/20/2013 | CN102108650B Zero-wastewater-emission pulping method |
| 11/19/2013 | US8585863 Separation of lignin from hydrolyzate |
| 11/14/2013 | WO2013135958A3 A method and a system for treating liquid flows at a chemical pulp mill |
| 11/14/2013 | WO2013135957A3 A method and a system for treating liquid flows at a chemical pulp mill |
| 11/13/2013 | CN103388275A Pre-treatment process for recycling black liquor electrodialysis alkaline in pulp preparation |
| 11/06/2013 | EP2660389A1 Process for obtaining tall oil from a sodium sesquisulfate solution |
| 11/06/2013 | EP2659060A2 Process for reducing one or more insoluble solids in a black liquor |