Evaluation of the Energy Effect from Heating Blast Furnace Gas before Top-pressure Recovery Turbines at Metallurgical Plants

Abstract

The article examines a circuit for heating blast furnace gas before gas turbines at metallurgical plants. A methodology is presented for assessing the complex energy effect from the use of fuel energy for generating electricity, taking into account the effect of heating on gas turbines and on the efficiency of the steam-turbine cycle. It is shown that gas heating allows increasing the power of gas turbines and also reducing fuel consumption in the steam-turbine cycle, which will reduce the specific fuel consumption for electricity generation.