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1. WO1998035185 - METHOD AND ARRANGEMENT FOR SUPPLYING AIR TO A RECOVERY BOILER

Publication Number WO/1998/035185
Publication Date 13.08.1998
International Application No. PCT/FI1998/000102
International Filing Date 04.02.1998
Chapter 2 Demand Filed 13.07.1998
IPC
F23G 7/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
GCREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
7Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals
04of waste liquors, e.g. sulfite liquors
F23L 9/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
9Passages or apertures for delivering secondary air for completing combustion of fuel
02by discharging the air above the fire
CPC
F23C 2201/101
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  ; A CARRIER GAS OR; AIR 
2201Staged combustion
10Furnace staging
101in vertical direction, e.g. alternating lean and rich zones
F23G 7/04
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
7Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
04of waste liquors, e.g. sulfite liquors
F23L 9/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL 
9Passages or apertures for delivering secondary air for completing combustion of fuel 
02by discharging the air above the fire
Applicants
  • KVAERNER PULPING OY [FI]/[FI] (AllExceptUS)
  • JANKA, Kauko [FI]/[FI] (UsOnly)
  • YLITALO, Matti [FI]/[FI] (UsOnly)
  • RUOHOLA, Tuomo [FI]/[FI] (UsOnly)
Inventors
  • JANKA, Kauko
  • YLITALO, Matti
  • RUOHOLA, Tuomo
Agents
  • KOLSTER OY AB
Priority Data
97053907.02.1997FI
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND ARRANGEMENT FOR SUPPLYING AIR TO A RECOVERY BOILER
(FR) PROCEDE PERMETTANT D'ALIMENTER EN AIR UNE CHAUDIERE DE RECUPERATION ET DISPOSITIF A CET EFFET
Abstract
(EN)
A method and an arrangement for supplying air to a recovery boiler. In the method, the air is supplied to the recovery boiler at at least one air supply level so that four vortexes are formed therein, the vortexes spinning, in pairs, in opposite directions so that the adjacent vortexes always spin in opposite directions. The arrangement comprises nozzles that are arranged to blow air so that four vortexes are formed in the recovery boiler, the adjacent vortexes always spinning in opposite directions.
(FR)
L'invention porte sur un procédé permettant d'alimenter en air une chaudière de récupération ainsi que sur le dispositif correspondant. Dans le cadre de ce procédé, l'air est introduit dans la chaudière de récupération à au moins un niveau d'approvisionnement tel qu'il se forme quatre tourbillons dans la chaudière, la rotation, par paires, de ces tourbillons s'effectuant dans des directions opposées et de manière que des tourbillons adjacents tournent toujours dans des directions opposées. Le dispositif est pourvu de tuyères agencées de manière que l'air soufflé constitue quatre tourbillons dans la chaudière de récupération, lesdits tourbillons tournant toujours dans des directions opposées.
Also published as
SE99028375
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