| Patents for D21C 11 - Regeneration of pulp liquors (4,054) |
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| 05/09/1985 | WO1985001966A1 Method for causticizing green liquor in an alkaline pulping process |
| 05/08/1985 | EP0140226A2 Method of obtaining lignin from alcaline lignin solutions |
| 05/08/1985 | EP0139736A1 Pulp washing process. |
| 05/02/1985 | EP0138882A1 Improved organosolv process for hydrolytic decomposition of lignocellulosic and starch materials |
| 04/30/1985 | US4514256 Method of minimizing slagging in the burning of black liquid |
| 04/30/1985 | CA1186134A1 Lime slaker |
| 04/16/1985 | US4511433 Method for the simultaneous delignification of wood and other ligno-cellulosic materials and hydrolysis of the hemicellulose component thereof |
| 04/16/1985 | CA1185408A1 Method of recovering chemicals and heat in sulphate spent liquor by means of a1 (oh).sub.3 or tio.sub.2.n.h.sub.2o circulation and gasification of the waste liquor |
| 04/02/1985 | US4508593 Reacting sulfur dioxide, chlorine gas and water to give hydrochlo9ic and sulfuric acid |
| 03/27/1985 | EP0135486A1 Method of controlling an anaerobic treatment process |
| 03/26/1985 | US4507172 Kraft pulping process |
| 03/19/1985 | US4505776 Iron, chromium, cobalt, nickel salt; black liquor, hydrogen sulfide absorption, synergistic |
| 03/19/1985 | CA1184006A1 Method of processing digesting chemicals for cellulose production |
| 03/12/1985 | US4504356 Continuous process of removing silica from spent pulping liquors |
| 02/19/1985 | CA1182723A1 Process for removing anthraquinone type scale |
| 02/12/1985 | US4498955 Control of active alkali in black liquor |
| 01/29/1985 | CA1181732A1 Composition and method for treating flue gas and methanol containing effluents |
| 01/15/1985 | US4493797 Apparatus and method involving supercritical fluid extraction |
| 12/27/1984 | CA1179807A Process for digesting cellulosic material |
| 12/04/1984 | US4486394 Agglomeration of fines with delignification liquid |
| 11/22/1984 | WO1984004597A1 Method and apparatus for determining carbonate/sulfide concentration |
| 11/22/1984 | WO1984004552A1 Method and apparatus for analyzing and controlling carbonate and sulfide in green liquor slaking and causticizing |
| 11/14/1984 | EP0125163A1 Treatment of the liquors entering the causticizing cycle of the Kraft process with a view to a subsequent use of the calcium carbonate |
| 11/07/1984 | EP0124507A1 Process for obtaining furfural from spent acid liquors in the production of cellulose, and apparatus for carrying out said process |
| 11/06/1984 | US4481074 Using liberated carbon dioxide for pressurized carbonation of green liquor |
| 11/06/1984 | US4481073 Process for removing anthraquinone type scale |
| 11/06/1984 | US4481072 Method for recovery of wastewater residues |
| 10/29/1984 | EP0094967A4 Lime slaker. |
| 10/25/1984 | WO1984004114A1 Pulp washing process |
| 09/11/1984 | US4470957 Precarbonation, reacting with sodium bicarbonate, and stripping hydrogen sulfide |
| 09/11/1984 | US4470876 Acidification of black liquor with sulfuric acid, and separation of lignin |
| 09/11/1984 | CA1174014A1 Pulp mill residual liquor recovery system |
| 09/11/1984 | CA1174012A1 Process for recovery of sulfur dioxide liberated in the chemical pulping of lignocellulosic material |
| 08/30/1984 | WO1984003304A1 Improved organosolv process for hydrolytic decomposition of lignocellulosic and starch materials |
| 08/21/1984 | US4466861 Process for the inhibition of the formation of deposits in cellulose pulping and cellulose pulp treating processes |
| 08/21/1984 | CA1172808A1 Kraft overload recovery process |
| 08/15/1984 | EP0115898A1 A process for preparing liquid- or shock-absorbing material starting from waste sludge from the paper or board industry |
| 08/15/1984 | EP0022841B1 Black-liquor processing |
| 07/31/1984 | US4462319 Method and apparatus for safely controlling explosions in black liquor recovery boilers |
| 07/31/1984 | CA1171608A1 Recovery process for kraft black liquor |
| 07/31/1984 | CA1171607A1 Elimination of potassium compounds from sodium-based pulping cycles |
| 07/25/1984 | EP0113754A1 Method of cleaning the heating surfaces during pulping. |
| 07/24/1984 | US4461708 Fluidized bed of fine particles, and agglomerate fibers as fixing base for bacteria |
| 07/17/1984 | CA1171075A1 Heat exchanger |
| 07/17/1984 | CA1170831A1 Processing methods for the oxidation of organics in supercritical water |
| 07/10/1984 | US4459228 Method for precipitation of sulphonated lignin from sulfide wastes |
| 06/26/1984 | CA1169607A1 Process and apparatus for recovery of spent pulping liquors |
| 06/21/1984 | WO1984002428A1 Primary battery system |
| 06/12/1984 | CA1168951A1 Process for the production of a cation exchanger, and a use of same |
| 05/15/1984 | CA1167204A1 Method for the delignification of wood and other ligno-cellulosic products |
| 05/08/1984 | CA1167051A1 Method for the recovery of furfural, formic acid, acetic acid and other organic components from acidic hydrolysates of pentosan-containing plant material |
| 04/17/1984 | US4443357 Hydrophobic silica or silicate, compositions containing the same and methods for making and using the same |
| 04/10/1984 | US4441959 Recovery of heat and chemical values from spent pulping liquors |
| 03/27/1984 | US4439272 Pulp mill residual liquor recovery process |
| 03/21/1984 | EP0102947A1 Method for wet combustion of organic material |
| 03/20/1984 | US4437316 Method and apparatus for recovering waste energy |
| 03/20/1984 | CA1163777A1 Preparation of white liquor |
| 03/13/1984 | US4436703 Lime slaker |
| 03/13/1984 | CA1163424A1 Method for ammonia recovery |
| 03/06/1984 | US4435487 Marine |
| 02/07/1984 | EP0091948A4 Flowing melt layer process for production of sulfides. |
| 02/02/1984 | WO1984000390A1 Method of covering the chemical losses in pulp production |
| 02/01/1984 | EP0099694A1 High charge density, cationic methacrylamide based monomers and their polymers |
| 01/24/1984 | CA1160853A1 Method and apparatus for recovering waste energy |
| 01/24/1984 | CA1160805A1 System for drying and burning viscous aqueous liquors which contain organics |
| 01/17/1984 | CA1160403A1 Method of treating kraft black liquor |
| 01/03/1984 | US4423533 Located in a well of a firebox |
| 01/03/1984 | CA1159606A1 System and process for reducing oxygen consumption in black liquor oxidation |
| 12/20/1983 | US4421597 Heat exchanging, pressurization, depressurization |
| 12/20/1983 | US4421596 Disintebgration into small particles to prevent explosion |
| 12/20/1983 | CA1159165A1 Method for treatment of waste water from pulp bleaching plants |
| 12/06/1983 | CA1158003A1 Pulp mill recovery |
| 11/30/1983 | EP0094967A1 Lime slaker. |
| 11/22/1983 | US4416422 Steplessly adjustable device for injecting black liquor into a soda digester |
| 11/15/1983 | CA1156966A1 Electro-chemical treatment of lquid effluent |
| 11/08/1983 | CA1156407A1 Pulsed black liquor furnace spray system |
| 11/08/1983 | CA1156406A1 Method at liquor recovery after the soda recovery boiler in sulphate processes |
| 10/26/1983 | EP0091948A1 Flowing melt layer process for production of sulfides |
| 10/19/1983 | EP0091457A1 A method of polysulphide treatment in alkaline pulping of lignocellulose material. |
| 10/13/1983 | WO1983003435A1 Pulping process |
| 10/13/1983 | WO1983003407A1 Alkali regeneration process |
| 10/11/1983 | CA1154911A1 Steplessly adjustable device for injecting black liquor into a soda digester |
| 10/05/1983 | EP0090568A1 Improved alkali regeneration process |
| 09/15/1983 | WO1983003108A1 Method for wet combustion of organic material |
| 09/14/1983 | EP0088456A1 Process for the continuous removal of silicic acid from waste liquors deriving from cellulose pulp production |
| 09/13/1983 | CA1153630A1 Process for treating clarified sludge |
| 09/06/1983 | CA1153275A1 Hydrophobic silica or silicate, compositions for containing the same, and methods for making and using the same |
| 09/06/1983 | CA1153165A1 Method for recovery of wastewater residues |
| 08/30/1983 | US4401811 Water pollution control; food processing plants; demetallization |
| 08/30/1983 | US4401514 Acidolysis of pentosans in a counter flow heat exchanger |
| 08/30/1983 | CA1152887A1 Scrubber for cleaning dust-loaded gas and steam |
| 08/23/1983 | CA1152265A1 Method for treating soft scale using acrylic acid polymer |
| 08/23/1983 | CA1152264A1 Process for the preparation of cooking liquor |
| 08/16/1983 | CA1151813A1 Fluidized bed |
| 08/09/1983 | US4397712 Digestion of lignin extract with aqueous solution of mild organic base |
| 07/07/1983 | WO1983002294A1 Procedure for clarifying liquid suspensions, particularly those produced in processes of the wood-processing industry |
| 06/23/1983 | WO1983002125A1 A method for the delignification of wood and other ligno-cellulosic products |
| 06/23/1983 | WO1983002109A1 Lime slaker |
| 06/22/1983 | EP0082116A1 Method for the delignification of wood and other lignocellulosic products |
| 06/21/1983 | CA1148674A1 Separation of terpenic compounds in industrial effluents from resinous wood treatment |