Process for reforming exhaust gas from metallurgical furnace, process for cooling the exhaust gas, and apparatuses for both processes

摘要

A reforming method of a metallurgical furnace generated exhaust gas, comprising 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. A cooling method of a metallurgical furnace generated exhaust gas, comprising adding a reducing agent to the high temperature exhaust gas to induce an endothermic reaction between the reducing agent and the carbon dioxide gas in the exhaust gas, and cooling the exhaust gas itself by the endothermic reaction, and an apparatus thereof.