A SYSTEM FOR MIXING OF COREX AND BLAST FURNACE GAS FOR PRE-HEATING OF BF AIR

摘要

A simple system for mixing of Blast Furnace gas with COREX gas by injecting high pressure COREX gas into low pressure BF gas duct line itself, of selective dimensions. The method of mixing also ensure achieving a mixed gas for pre-heating of air for use in BF operation, comprising mixing of high Calorific value (CV) COREX gas having CV in the order of 2000 kcal/Nm3 with BF gas having low calorific value of 700 kcal/Nm3 and thereby utilizing BF gas effectively up to about 95% using said high pressure COREX gas injection method, selectively controlling pneumatic regulating valve, shut-off valve(SOV), safety relief valve and online calorific value analyzer( C ). The present system of mixing of BF gas with the COREX gas is simple, safe, reliable and cost effective and thus having enough merit to be widely used in industry in the related field of Blast furnace operation and the like.