Patent International Class: D21C 11/12
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Method for cleaning and/or cooling a liquor gun in a chemical recovery boiler
Inventor: Tanttu, et al. | Patent Number: 7988820
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Smelt spout enclosure for chemical recovery boilers
Inventor: Gibowski | Patent Number: 7806127
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Method and arrangement in connection with a chemical recovery boiler
Inventor: Manttari | Patent Number: 7501042
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Method for treatment of spent liquor
Inventor: Sundman, et al. | Patent Number: 7465372
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Alkaline process for the manufacturing of pulp using alkali metaborate as buffering alkali
Inventor: Stigsson | Patent Number: 6946057
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System for feeding combustion air in a soda recovery boiler
Inventor: Ruohola, et al. | Patent Number: 6932000
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Black liquor gun
Inventor: Haaga, et al. | Patent Number: 6874449
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Gasification reactor vessel
Inventor: Schingnitz, et al. | Patent Number: 6827912
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Methods of improving productivity of black liquor recovery boilers
Inventor: Philippe, et al. | Patent Number: 6799526
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Apparatus for gasification of spent liquor
Inventor: Nilsson | Patent Number: 6790246
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Apparatus for gasification of spent liquor
Inventor: Nilsson | Patent Number: 6790246
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Device for gasification of spent liquor
Inventor: Nilsson, et al. | Patent Number: 6780211
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Device for gasification of spent liquor
Inventor: Nilsson, et al. | Patent Number: 6780211
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Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals
Inventor: Stigsson | Patent Number: 6770168
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Process for oxygen pulping of lignocellulosic material and recorvery of pulping chemicals
Inventor: Stigsson | Patent Number: 6770168
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Method and arrangement for combusting black liquor
Inventor: Tikka | Patent Number: 6761799
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Combustion air system for recovery boilers, burning spent liquors from pulping processes
Inventor: Saviharju, et al. | Patent Number: 6742463
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Method for kraft waste reclamation
Inventor: Olsen, et al. | Patent Number: 6719879
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Arrangement for cleaning, airflow control and pushing away melt in air ports of incineration boilers
Inventor: Nordenberg | Patent Number: 6672227
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Method and arrangement for producing electrical energy at a pulp mill
Inventor: Saviharju, et al. | Patent Number: 6647726
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Arrangement for feeding black liquor into a recovery boiler
Inventor: Hytonen, et al. | Patent Number: 6578529
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Method of reducing Nox compounds in flue gases of recovery boiler
Inventor: Tamminen, et al. | Patent Number: 6517793
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Apparatus for gasification of spent liquor
Inventor: Nilsson | Patent Number: 6500301
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Apparatus for gasification of spent liquor
Inventor: Nilsson | Patent Number: 6500301
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Device for the cleaning of a liquor spray nozzle assembly of a soda recovery boiler
Inventor: Soderstrom, et al. | Patent Number: 6478235
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Apparatus to recover sulfur from concentrated acid gas into alkaline solution
Inventor: Verrill, et al. | Patent Number: 6440379
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Method for black liquor gasification in recovery boilers
Inventor: Sandquist, et al. | Patent Number: 6425976
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Methods of improving productivity of black liquor recovery boilers
Inventor: Philippe, et al. | Patent Number: 6408771
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Methods of improving productivity of black liquor recovery boilers
Inventor: Philippe, et al. | Patent Number: 6408771
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Method for measuring properties of the stack and the corrosion of materials in a soda recovery unit
Inventor: Pulliainen, et al. | Patent Number: 6365035
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Treatment of pulp mill condensate with ozone
Inventor: Colodette, et al. | Patent Number: 6348129
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Electrolytic causticizing of smelt from a kraft recovery furnace
Inventor: Winnick, et al. | Patent Number: 6319358
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Electrolytic causticizing of smelt from a kraft recovery furnace
Inventor: Winnick, et al. | Patent Number: 6319358
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Method and device for removal of soda melt from a soda recovery unit
Inventor: Vanhatalo | Patent Number: 6311630
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Arrangement in soda recovery boiler for removing melts for maintenance
Inventor: Salmi, et al. | Patent Number: 6287415
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Arrangement in soda recovery boiler for removing melts for maintenance
Inventor: Salmi, et al. | Patent Number: 6287415
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Method and apparatus for optimizing the combustion air system in a recovery boiler
Inventor: Karidio, et al. | Patent Number: 6279495
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Process for kraft chemical recovery
Inventor: Roberts | Patent Number: 6261411
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Quench vessel
Inventor: Nilsson | Patent Number: 6238468
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Method for black liquor gasification in recovery boilers
Inventor: Sandquist, et al. | Patent Number: 6228214
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Method for black liquor gasification in recovery boilers
Inventor: Sandquist, et al. | Patent Number: 6228214
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Recovery boiler
Inventor: Hino, et al. | Patent Number: 6186080
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Recovery boiler
Inventor: Hino, et al. | Patent Number: 6186080
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Process for recovering alkali and black liquor containing silicatae
Inventor: Myreen | Patent Number: 6183598
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Process for recovering alkali and black liquor containing silicatae
Inventor: Myreen | Patent Number: 6183598
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Method for upgrading a boiler
Inventor: Hakulinen, et al. | Patent Number: 6178924
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Recovery boiler
Inventor: Ruohola, et al. | Patent Number: 6178898
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Process for purifying ash which principally consists of sodium sulphate from a recovery boiler
Inventor: Wimby | Patent Number: 6162408
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Process for obtaining flue gases with low content of NO.sub.x while combusting black liquor and a recovery boiler therefor
Inventor: Lindman | Patent Number: 6155210
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Process for detoxifying waste materials by steam reformation through endothermic gasification reactions
Inventor: Mansour, et al. | Patent Number: 6149765
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Polysulfide pulping process
Inventor: Stigsson, et al. | Patent Number: 6143130
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Process for kraft chemical recovery
Inventor: Roberts | Patent Number: 6123806
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Process for washing gas formed by gasifying black liquor
Inventor: Nilsson | Patent Number: 6113739
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Process for washing gas formed by gasifying black liquor
Inventor: Nilsson | Patent Number: 6113739
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Recovery boiler smelt spout
Inventor: Kleinfeld | Patent Number: 6111232
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Method and arrangement for optimizing oxidation during burning of gaseous and liquid fuels
Inventor: Tamminen, et al. | Patent Number: 6109911
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Process for obtaining flue gases with low content of NO.sub.x in a black liquor recovery boiler
Inventor: Lindman | Patent Number: 6071377
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Process for obtaining flue gases with low content of NO.sub.x in a black liquor recovery boiler
Inventor: Lindman | Patent Number: 6071377
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Process for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers
Inventor: Nilsson | Patent Number: 6030493
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Process for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers
Inventor: Nilsson | Patent Number: 6030493
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Pulp-mill recovery installation for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers
Inventor: Nilsson | Patent Number: 6027609
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Pulp-mill recovery installation for recovering chemicals and energy from cellulose spent liquor using multiple gasifiers
Inventor: Nilsson | Patent Number: 6027609
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Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking
Inventor: Wennberg, et al. | Patent Number: 5993601
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Methods of improving productivity of black liquor recovery boilers
Inventor: Philippe, et al. | Patent Number: 5992337
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Methods of improving productivity of black liquor recovery boilers
Inventor: Philippe, et al. | Patent Number: 5992337
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Method for controlling chloride concentration in the flue gas of a recovery boiler
Inventor: Hyoty, et al. | Patent Number: 5989387
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Disrupting the flow from the smelt spout of a recovery boiler
Inventor: Paju, et al. | Patent Number: 5976319
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Disrupting the flow from the smelt spout of a recovery boiler
Inventor: Paju, et al. | Patent Number: 5976319
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Method for burning secondary sludge in a recovery boiler
Inventor: Knuutila, et al. | Patent Number: 5976318
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Leaching process
Inventor: Landfors, et al. | Patent Number: 5961803
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Combustion of black liquid and processing of lime sludge in a recovery boiler
Inventor: Pettersson, et al. | Patent Number: 5922172
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Combustion of black liquid and processing of lime sludge in a recovery boiler
Inventor: Pettersson, et al. | Patent Number: 5922172
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Method for treating paper mill condensate to reduce the amount of sulfur compounds therein
Inventor: Borrel | Patent Number: 5911853
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Method of reducing the viscosity of a black liquor using thiocyanate salt
Inventor: Spontak, et al. | Patent Number: 5900112
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Process for increasing the effectiveness of slag and/or corrosion control chemicals for combustion units
Inventor: Smyrniotis, et al. | Patent Number: 5894806
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Recovery boiler operation with black liquor feed in separate liquid stream and solid stream
Inventor: .ANG.gren | Patent Number: 5879511
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Recovery boiler operation with black liquor feed in separate liquid stream and solid stream
Inventor: .ANG.gren | Patent Number: 5879511
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Turbo oxidation system,--TOS, for wet combustion of COD-containing liquids and for COD-reduction by enzymes
Inventor: Fongen | Patent Number: 5876594
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Process for integrated evaporation and gasification of spent liquor from cellulose cooking
Inventor: Nilsson | Patent Number: 5868805
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Process for regenerating a liquid created in the kraft process for pulping wood, while simultaneously obtaining high energy efficiency
Inventor: Seidel, et al. | Patent Number: 5855737
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Method of reducing corrosion in a power boiler of a pulp mill
Inventor: Pikkujamsa, et al. | Patent Number: 5855736
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Device and process for dissolving smelt from recovery boilers
Inventor: Ericsson, et al. | Patent Number: 5820729
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Device and process for dissolving smelt from recovery boilers
Inventor: Ericsson, et al. | Patent Number: 5820729
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Method for gasifying cellulose spent liquor to produce superheated steam and green liquor of low carbonate concentration
Inventor: Stigsson, et al. | Patent Number: 5814189
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Recovery boiler for combustion of waste liquors
Inventor: Palmgren | Patent Number: 5803020
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Segmented smelt spout
Inventor: Beveridge, et al. | Patent Number: 5800773
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Method and apparatus for opening discharge outlets
Inventor: Kleinfeld | Patent Number: 5783140
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Recovery boiler
Inventor: Olausson, et al. | Patent Number: 5771817
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Process for treating sulphur-containing spent liquor using multi-stage carbonization
Inventor: Bobik, et al. | Patent Number: 5759345
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Process for treating sulphur-containing spent liquor using multi-stage carbonization
Inventor: Bobik, et al. | Patent Number: 5759345
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Black liquor gasifier
Inventor: Monacelli, et al. | Patent Number: 5752994
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Method for the recovery of energy and chemicals from cellulose spent liquor containing potassium using a gasifier
Inventor: Backlund, et al. | Patent Number: 5746886
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Method for the recovery of energy and chemicals from cellulose spent liquor containing potassium using a gasifier
Inventor: Backlund, et al. | Patent Number: 5746886
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Process for increasing the effectiveness of slag control chemicals for black liquor recovery and other combustion units
Inventor: Smyrniotis, et al. | Patent Number: 5740745
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Process for the conversion of calcium sulfide
Inventor: van Heiningen | Patent Number: 5738758
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Process for the conversion of calcium sulfide
Inventor: van Heiningen | Patent Number: 5738758
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Method and apparatus for regulating the temperature in a chemical melt dissolving tank
Inventor: Engdahl, et al. | Patent Number: 5735331
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Device for distribution of oxygen-containing gas in a furnace
Inventor: Uppstu | Patent Number: 5724895
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Combustion system for a black liquor recovery boiler
Inventor: Fornetti, et al. | Patent Number: 5715763
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Method of recovering energy from waste liquors from pulp processes
Inventor: Kuusio, et al. | Patent Number: 5707490