Method and apparatus for combined steam boiler/combuster and...

F - Mech Eng,Light,Heat,Weapons – 01 – K

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F01K 23/06 (2006.01) F23G 5/027 (2006.01) F23G 7/10 (2006.01)

Patent

CA 2473743

A method and apparatus for providing a steam boiler/combuster (12) and gasifier (26) that uses a primary dirty fuel, such as waste materials, or high- polluting fossil fuels, and a secondary low-polluting fuel, such as biomass fuels for co~-generation of electricity while reducing harmful emissions. The primary fuel is burned in the combuster (16) to create steam in the steam boiler (14). The steam turns a steam turbine (18) thereby powering a first generator (22). The dirty exhaust (24) from the combuster (16) is scrubbed by a gasifier (26). The secondary fuel and oxygen are added to the dirty exhaust in the gasifier (26) creating gas and ash. The gas powers an engine (30) that turns a second generator (32) and releases a cleaner exhaust.

L'invention concerne un procédé et un appareil comprenant une chaudière à vapeur/chambre de combustion (12), et un gaséifieur (26) qui utilise un combustible primaire sale, tel que des matières de déchets ou des combustibles fossiles très polluant, et un combustible secondaire faiblement polluant, tel que des combustible de biomasse permettant de cogénérer de l'électricité tout en réduisant les émissions nocives. Le combustible primaire est brûlé dans la chambre de combustion (16) afin de produire de la vapeur dans la chaudière à vapeur (14). Ladite vapeur fait tourner une turbine à vapeur (18), ce qui alimente un premier générateur (22). Les gaz d'échappement (24) sales provenant de la chambre de combustion (16) sont épurés au moyen d'un gaséificateur (26). Le combustible secondaire et l'oxygène sont ajoutés aux gaz d'échappement sales dans le gaséificateur (26), ce qui produit un gaz et des cendres. Le gaz alimente un moteur (30) qui fait tourner un second générateur (32) et libère un gaz d'échappement plus propre.

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