Soodakattila, polttoaineen syöttövälineet ja menetelmä mustalipeän ja ilman syöttämiseksi typpioksidipäästöjen vähentämiseksi

The invention relates to a recovery boiler comprising a set of black liquor feed pipes in the first combustion zone (I), and primary air nozzles below the set of black liquor feed pipes. The recovery boiler comprises an air feed channel above at least part of the length of at least one black liquor...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	Dernjatin, Pauli
Format:	Patent
Sprache:	fin ; swe
Schlagworte:	AIR AIR SUPPLY APPARATUS THEREFOR AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHINBOILERS BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES CONSUMING WASTE PRODUCTS BY COMBUSTION CONTROLLING WATER LEVEL CREMATION FURNACES DRAUGHT-INDUCING FEED-WATER SUPPLY HEATING LIGHTING MECHANICAL ENGINEERING METHODS OF STEAM GENERATION METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN PAPER-MAKING PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS STEAM BOILERS STEAM GENERATION SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS TEXTILES WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a recovery boiler comprising a set of black liquor feed pipes in the first combustion zone (I), and primary air nozzles below the set of black liquor feed pipes. The recovery boiler comprises an air feed channel above at least part of the length of at least one black liquor feed pipe for supplying combustion air for volatile matter into the first combustion zone (I) along with the black liquor supply in the direction of the length of the at least one black liquor feed pipe. The present invention further relates to fuel feeding means for a recovery boiler and a method for feeding black liquor and air to a recovery boiler to reduce nitrogen oxide emissions.