Dry scrubber with condensing heat exchanger for cycle...

F - Mech Eng,Light,Heat,Weapons – 28 – B

Patent

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Details

F28B 1/00 (2006.01) B01D 46/04 (2006.01) B01D 53/34 (2006.01) B01D 53/50 (2006.01) F23J 15/00 (2006.01) F23J 15/04 (2006.01) F23J 15/06 (2006.01) F23L 15/00 (2006.01) F23L 15/04 (2006.01)

Patent

CA 2130204

A system for controlling sulfur dioxide (SO2) in a flue gas produced by a boiler comprises an air heater connected to the boiler for cooling the flue gas produced by the boiler. A dry scrubber is connected to the air heater and a slurry source for receiving the heated flue gas and a slurry in order to remove SO2 from the flue gas. A particulate collector is connected to the dry scrubber in order to collect particles from the flue gas. Heat is recovered from the flue gas by connecting a condensing heat exchanger to the particulate collector; and a condensate recycler is connected to the condensing heat exchanger and the slurry source for reducing the water requirements for the system.

Système pour contrôler le dioxyde de soufre (SO2) dans un gaz de combustion produit par une chaudière comprenant un réchauffeur d'air raccordé à la chaudière pour refroidir le gaz de combustion produit par la chaudière. Un épurateur à sec est raccordé au réchauffeur d'air et à une source de boue pour recevoir le gaz de combustion chauffé et la boue pour extraire le SO2 du gaz de combustion. Un collecteur de particules est raccordé à l'épurateur à sec pour recueillir les particules du gaz de combustion. La chaleur est récupérée du gaz de combustion en raccordant un échangeur-condenseur au collecteur de particules; et une unité de recyclage de condensats est raccordée à l'échangeur-condenseur et à la source de boue pour diminuer les besoins en eau du système.

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