Processing method for high-temperature exhaust gas

F - Mech Eng,Light,Heat,Weapons – 23 – J

Patent

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Details

F23J 15/06 (2006.01) F27D 99/00 (2010.01) B01D 47/06 (2006.01) F27D 17/00 (2006.01) F28C 3/06 (2006.01)

Patent

CA 2347904

To effectively separate and recover solid dust and volatile or molten components while preventing solid dust and volatile or molten component dust from being adhered to inner walls of a temperature control tower. The high temperature exhaust gas is blown from a gas blowing port 2a above a temperature control tower 2 through an exhaust gas inlet duct 3, cooling water is sprayed obliquely downward toward the substantially center of a gas flow of the high-temperature exhaust gas from cooling water spray nozzles 5, cooling gas is injected so as to be a downward whirling gas flow along the inner walls of the temperature control tower 2 from first stage cooling gas injection nozzles 6 and second stage cooling gas injection nozzles 7 therebelow, and lowering a temperature of the high-temperature exhaust gas while preventing solid dust and volatile or molten components from being adhered to the inner walls of the temperature control tower 2, whereby the volatile or molten components are solidified into volatile or molten component dust, the solid dust is discharged and recovered from the bottom of the temperature control tower 2, and the volatile or molten component dust is recovered by a bag filter 10 provided downstream of a lower discharge duct 4.

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