KVAERNER POWER OY

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
D21C PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR523
 
  
 
F23G CREMATION FURNACES; CONSUMING WASTE BY COMBUSTION57
 
  
 
F22B METHODS OF STEAM GENERATION; STEAM BOILERS 320
 
  
 
F22G SUPERHEATING OF STEAM 36
 
  
 
B01D SEPARATION 2132
 
  
 
F22D PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS 28
 
  
 
F23L AIR SUPPLY; DRAUGHT-INDUCING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS 215
 
  
 
B09B DISPOSAL OF SOLID WASTE 110
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF178
 
  
 
F26B DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM 129

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7587994 Arrangement in recovery boilerMay 23, 06Sep 15, 09[F22B]
7434543 Arrangement in recovery boilerApr 05, 06Oct 14, 08[F22G]
6782848 Method in connection with a pipe grate for fluidized bed boiler and a pipe grateMar 17, 03Aug 31, 04[F27B, F28D]
6609482 Method in a soda recovery boiler, and a soda recovery boilerMay 02, 02Aug 26, 03[F22G]
6571746 Method in connection with a pipe grate for fluidized bed boiler and a pipe grateJun 21, 01Jun 03, 03[F22B]
6460472 Fluidized bed material, method for its production, and method in a fluidized bed processOct 26, 00Oct 08, 02[F23G]
6287415 Arrangement in soda recovery boiler for removing melts for maintenanceAug 31, 00Sep 11, 01[D21C]
6237541 Process chamber in connection with a circulating fluidized bed reactorApr 19, 00May 29, 01[B09B]
6178924 Method for upgrading a boilerJul 21, 99Jan 30, 01[F22D]
6132555 Method and arrangement for increasing evaporation capacity of a multi-stage evaporator of spent liquor in a pulp millOct 30, 97Oct 17, 00[B01D, D21C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7194983 Circulating fluidized bed boilerExpiredJul 01, 05Mar 27, 07[F23C]
7004089 Combined fluidized bed and pulverized coal combustion methodExpiredMay 11, 01Feb 28, 06[F23G]
6932000 System for feeding combustion air in a soda recovery boilerExpiredOct 10, 03Aug 23, 05[F23G, F23L]
6874449 Black liquor gunExpiredOct 30, 03Apr 05, 05[F28H]
6517793 Method of reducing Nox compounds in flue gases of recovery boilerExpiredSep 18, 00Feb 11, 03[C01C]
2001/0048,901 Process chamber in connection with a circulating fluidized bed reactorAbandonedApr 09, 01Dec 06, 01[F27B, B01J]
6230664 Method and arrangement for supplying air to a fluidized bed boilerExpiredAug 05, 99May 15, 01[B09B]
6178898 Recovery boilerExpiredFeb 17, 98Jan 30, 01[F23M, F22B]
6047649 Method and arrangement in cooling medium circulation of a recovery boilerExpiredMar 19, 96Apr 11, 00[F23G]
6006683 Method and arrangement for supplying air to recovery boilerExpiredFeb 03, 98Dec 28, 99[F23G, F23B]
5989387 Method for controlling chloride concentration in the flue gas of a recovery boilerExpiredJan 17, 96Nov 23, 99[D21C]
5709173 Method and apparatus for controlling combustion air in a boiler plantExpiredNov 16, 95Jan 20, 98[F22B]
5647955 Method of reducing scaling of heat transfer surfaces in an evaporation plant of a sulphate cellulose millExpiredOct 13, 95Jul 15, 97[D21C]
5562804 Method for adjusting the sulphur/sodium ratio in the flue gases of a soda recovery boilerExpiredJul 21, 94Oct 08, 96[D21C]
5419267 Method and apparatus for drying the fuel of a fluidizied-bed boilerExpiredMay 26, 94May 30, 95[F23G]
5269262 Combustion unitExpiredApr 13, 92Dec 14, 93[F22B]
5230773 Process for the recovery of heat and chemicals from spent liquorExpiredAug 31, 90Jul 27, 93[B01D]
5112441 Process for the recovery of heat and chemicals from spent liquorExpiredAug 07, 90May 12, 92[B01D]
5034205 Method of removing sulphur oxides from flue gasesExpiredNov 02, 88Jul 23, 91[C01B, B01J]
5007354 Combustion air supply system for a recovery furnaceExpiredFeb 16, 90Apr 16, 91[F23G]

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