Method for reforming exhaust gas generated from metallurgical furnace, method for cooling exhaust gas and apparatus therefor

摘要

A reforming method of a metallurgical furnace generated exhaust gas includes reforming a high temperature exhaust gas discharged from a metallurgical furnace by adding a reducing agent to the gas, wherein addition of the reducing agent is initiated when an oxygen concentration in the exhaust gas is 1 vol % or less, and a reforming reaction is completed when a temperature of the exhaust gas is 800° C. or higher, and an apparatus thereof. The reducing agent is blown from a reducing agent blowing nozzle having a double pipe structure.

主权项

1. A method of reforming a metallurgical furnace exhaust gas generated from a metallurgical furnace which is an oxygen converter comprising:
adding a reducing agent to the metallurgical furnace exhaust gas which contains high temperature carbon dioxide gas between a skirt device and a primary dust collector in an oxygen converter gas recovery system of the oxygen converter and reacting the carbon dioxide gas and the reducing agent to reform the exhaust gas,wherein
the reducing agent is added when an oxygen concentration in the exhaust gas is 1 vol % or less, and a reforming reaction is completed when an exhaust gas temperature is 800° C. or more.