| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 07/14/2010 | CN101775750A A clear pulp production process for realizing complete comprehensive utilization and removing three wastes |
| 07/07/2010 | EP2203589A2 Method in the treatment of odorous gases of a chemical pulp mill |
| 07/07/2010 | CN101768887A Circular utilization method of straw in pulping and papermaking processes |
| 07/07/2010 | CN101767892A Processing technique for residual papermaking black liquor |
| 06/30/2010 | CN101760975A Circulation process for performing ammonium sulfite pulping by using sulfur-containing flue gas absorber |
| 06/30/2010 | CN101760974A Process for performing ammonium sulfite pulping by using sulfur-containing flue gas absorber |
| 06/24/2010 | WO2010069151A1 Process for extracting cellulose |
| 06/23/2010 | EP2199457A1 A handling device for liquor guns of a recovery boiler plant, a recovery boiler plant, and a method in a recovery boiler |
| 06/23/2010 | EP2198035A1 Method and equipment for production of glucose, ethanol, furfural, furane and lignin from renewable raw materials |
| 06/23/2010 | CN101748635A Method for preparing slurry by replacement cooking |
| 06/23/2010 | CN101748633A Novel cellulose extraction process |
| 06/23/2010 | CN101746781A Protecting device of dissolving tank inner wall of alkali recovery furnace |
| 06/19/2010 | CA2688910A1 A handling device for liquor guns of a recovery boiler plant, a recovery boiler plant, and a method in a recovery boiler |
| 06/16/2010 | CN101736639A Process and equipment for improving concentration of straw pulping black liquor by alkali method |
| 06/16/2010 | CN101736638A Processing method of paper-making pulping black liquor |
| 06/10/2010 | WO2010063875A1 A method and device for emptying the floor of a black liquor recovery boiler |
| 06/10/2010 | CA2745710A1 A method and device for emptying the floor of a black liquor recovery boiler |
| 06/09/2010 | EP2193138A1 Lignin and other products isolated from plant material, and methods and compositions therefor |
| 06/09/2010 | CN201502006U Tail dreg recycling device for mineral fiber pulping |
| 06/09/2010 | CN101343843B Method for improving water quality of waste paper pulping closed process by using tripolite |
| 06/02/2010 | EP2191261A2 Electrode |
| 06/02/2010 | CN101285278B Recovering process for white water of paper making by stewing type precipitation method |
| 06/02/2010 | CN101215797B Zero discharge treatment method for chemical mechanical pulp |
| 05/27/2010 | WO2010059825A1 Sugar production by decrystallization and hydrolysis of polysaccharide enriched biomass |
| 05/27/2010 | CA2739707A1 Sugar production by decrystallization and hydrolysis of polysaccharide enriched biomass |
| 05/20/2010 | US20100122784 Process for treating pulp mill condenstates using a hollow fiber contactor |
| 05/19/2010 | CN101711229A concurrent anaerobic digestion and fermentation of lignocellulosic feedstocks |
| 05/19/2010 | CN101210182B Method for producing soil restoring agent by using straw slurry black liquor |
| 05/06/2010 | US20100108274 Disposal process for sulfide-free black liquors |
| 04/28/2010 | CN101698986A Energy-saving environment-friendly zero-emission method for circularly producing, pulping and bleaching at normal pressure by deoxidizing and leaching method |
| 04/20/2010 | US7699958 Mixing liquor with acid or gas which forms an acid upon contact with water to initiate precipitation of carbohydrate; adding carboxylated carbohydrate and cationic polymer wherein precipitate aggregates into larger precipitate structures;selectively removing carbohydrate gel; purifying lignin |
| 04/14/2010 | EP2173942A1 Use of cyclodextrins for odor control in papermaking sludges, and deodorized sludge and products |
| 03/31/2010 | CN101688362A Method for treating liquid flows at a chemical pulp mill |
| 03/31/2010 | CN101688361A Method to remove hemicellutose from cellutosic fibres using a solution of ammonia and hydrogen peroxide |
| 03/30/2010 | US7686964 dewatering in pressurized filter, passing to kiln |
| 03/25/2010 | US20100071862 Method and equipment for the evaporation of black liquor that is obtained from a digestion process during the production of cellulose pulp |
| 03/24/2010 | CN101680175A A recovery process for a pulp mill |
| 03/24/2010 | CN100595375C Chemimechanical desilication of nonwood plant materials |
| 03/17/2010 | CN101675191A Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators |
| 03/11/2010 | WO2010026244A1 Method for the integrated production of cellulose and low-molecular-weight reusable materials |
| 03/11/2010 | CA2735396A1 Method for the integrated production of cellulose and low-molecular-weight reusable materials |
| 03/03/2010 | EP2158357A1 Method to remove hemicellutose from cellutosic fibres using a solution of ammonia and hydrogen peroxide |
| 02/25/2010 | WO2010020729A1 Dimethyl disulphide derived at least partially from renewable materials |
| 02/25/2010 | WO2010020583A1 Improved bleach process |
| 02/25/2010 | US20100044483 Plasma whirl reactor apparatus and methods of use |
| 02/25/2010 | US20100044477 Plasma whirl reactor apparatus and methods of use |
| 02/24/2010 | CN201411590Y Oxidation white liquor preparation system |
| 02/23/2010 | CA2436927C Improvements to oxidising processes by oxygen transfer within a liquid medium in a reactor under pressure |
| 02/18/2010 | WO2010019079A1 Method and system for treatment of malodorous gases emanating from a pulp mill |
| 02/16/2010 | US7661376 System for producing energy at a pulp mill |
| 02/16/2010 | CA2424075C Method of treating residual acid |
| 02/11/2010 | WO2010016786A1 Method and system for the reduction of the content of ammonia in flue gases from pulp mills |
| 02/11/2010 | US20100032111 Process for producing fibrous material from wood |
| 02/03/2010 | EP2148953A1 A recovery process for a pulp mill |
| 02/02/2010 | CA2429131C A process for production of synthesis gas in combination with the maintenance of the energy balance for a pulp mill |
| 01/27/2010 | CN100585071C Energy conservation type barrate type black liquor extracting machine |
| 01/21/2010 | US20100012283 method to use heat energy from black liquor |
| 01/20/2010 | CN201386232Y Non-wooden raw material paper-making black liquor thermal cracking device |
| 01/20/2010 | CN101629393A Film-falling crystallization and evaporation process of pulping black liquor |
| 01/14/2010 | WO2009142681A3 Process and apparatus for treating green liquor |
| 01/13/2010 | EP2142699A1 Method of monitoring and inhibiting scale deposition in pulp mill evaporators and concentrators |
| 01/13/2010 | CN201382908Y On-line measuring device for outlet effect black liquor consistency of evaporator used for alkali recovery in papermaking |
| 01/12/2010 | CA2446407C Method and apparatus for recovering fibre and fibre-based solids from a filtrate of the mechanical or chemi-mechanical wood pulp industry, said filtrate containing both solids andlipophilic extractive material |
| 01/06/2010 | CN101619550A Treatment method of high-yield pulping waste liquid for enhancing pulp strength |
| 01/06/2010 | CN101619549A Cationization modification method of high-yield pulping waste liquid and application of modified waste liquid |
| 12/30/2009 | WO2009158621A1 Flow process for pretreatment of lignocellulosic biomass |
| 12/30/2009 | CA2729162A1 Flow process for pretreatment of lignocellulosic biomass |
| 12/30/2009 | CA2728726A1 Process for separation of ca- or mg-sulfite spent liquor to yield crystalline xylose |
| 12/17/2009 | WO2009151366A1 Chemical and method for chelating metal ions included in water and separating/recovering of formed chelate |
| 12/17/2009 | CA2739217A1 Chemical and method for chelating metal ions included in water and separating/recovering of formed chelate |
| 12/16/2009 | EP2132378A1 An arrangement for the adjustment of equipment for a boiler |
| 12/15/2009 | CA2356444C Process for oxygen pulping of lignocellulosic material and recovery of pulping chemicals |
| 12/13/2009 | CA2668802A1 Solution for treating lime mud |
| 12/09/2009 | CN101597871A Paper pulping bleaching and waste water purification integration technology |
| 12/02/2009 | CN100564668C Pulp combined production method for sectional cycled zero-discharge and comprehensive utilization |
| 12/02/2009 | CN100564665C Clean production method for rice-wheat straw pulp capable of poaching by acetic acid method |
| 11/26/2009 | WO2009142681A2 Process and apparatus for treating green liquor |
| 11/26/2009 | US20090288790 Process and apparatus for treating green liquor |
| 11/26/2009 | CA2724395A1 Process and apparatus for treating green liquor |
| 11/25/2009 | CN100562626C Method for recovering papermaking black liquor liquid soda |
| 11/24/2009 | US7622693 Plasma whirl reactor apparatus and methods of use |
| 11/19/2009 | WO2009138700A1 Direct synthesis of aqueous hydrogen peroxide solution at the site of a paper mill |
| 11/19/2009 | WO2009108599A3 Process for generating a hydrocarbon feedstock from lignin |
| 11/19/2009 | CA2723230A1 Direct synthesis of aqueous hydrogen peroxide solution at the site of a paper mill |
| 11/18/2009 | EP2119668A2 Process for the preparation of synthesis gas from black liquor |
| 11/18/2009 | CN100560861C Paper-making black liquor fluidized bed alkali reclaiming device and method |
| 11/16/2009 | CA2665050A1 Process for the preparation of synthesis gas from black liquor |
| 11/12/2009 | WO2009135999A1 Method and equipment for treatment of black li quor at pulp mill |
| 11/12/2009 | CA2723416A1 Method and equipment for treatment of black liquor at pulp mill |
| 11/11/2009 | EP1368532B1 Pipe system for receiving and transporting lime sludge from a white liquor filter |
| 11/04/2009 | EP1268925B1 Method for improved turpentine recovery from modern cooking plants |
| 10/29/2009 | US20090266500 Process for producing tissue paper |
| 10/29/2009 | US20090266277 Method and device for emptying the floor of a soda recovery boiler |
| 10/22/2009 | WO2009108601A3 Process for generating a hydrocarbon feedstock from lignin |
| 10/21/2009 | CN100552131C Alkaline method for treating black liquor from straw pulp paper-making |
| 10/20/2009 | CA2407014C Addition of thp or thp salt to pulping liquors to reduce or destroy catalase and/or catalase producing bacteria |
| 10/14/2009 | CN101555667A Biorefinery method of wood fiber material |
| 10/14/2009 | CN100549525C Cooling system for ports in a boiler |
| 10/06/2009 | CA2504303C Process for producing kraft pulp |
| 09/30/2009 | EP1663873B1 Method for treating a medium with ultrasonic transducers |