A boiler producing steam from flue gases with high...

Details A boiler producing steam from flue gases with high... A boiler producing steam from flue gases with high...

F - Mech Eng,Light,Heat,Weapons

23

G

F23G 5/46 (2006.01) F23G 5/14 (2006.01) F23G 5/48 (2006.01)

Patent

CA 2624054

This invention relates to a boiler (1 ) drying, igniting and combusting refuse and pro¬ ducing steam (2, 2a) by heat exchange with flue gases (3). Said boiler (1 ) comprises a reactor (16) with firing a secondary fuel (18) for generating a less-corrosive gas flow (6) and an end superheater (8) located in the flow (6) of said less-corrosive gas. Said reactor (16) could be a sintering reactor, a rotary kiln, a fluidised bed or a spouted bed. This provides for an increased lifetime of the end superheater and makes the boiler provide a high and efficient electrical power output.

Chaudière (1) séchant, allumant et brûlant des déchets et produisant de la vapeur (2, 2a) par échange thermique avec des gaz de combustion (3). Ladite chaudière (1 ) comprend un réacteur (16) avec allumage de combustible secondaire (18) produisant un flux de gaz moins corrosif (6), et un surchauffeur terminal (8) se trouvant dans le flux (6) de ce gaz. Ledit réacteur (16) pourrait être un réacteur de frittage, un four rotatif, un lit fluidisé ou un lit avec giclage. Il en résulte une durée de vie accrue pour le surchauffeur, et la chaudière décrite assure une production énergétique élevée et efficace.

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