INTEGRATED GAS COOLING SYSTEM FOR ELECTRIC ARC FURNACE

PROBLEM TO BE SOLVED: To recover a thermal energy from flue gas of an electric arc furnace (EAF), and uses the energy for other purposes such as power generation.SOLUTION: A flue gas cooler 11 for cooling a flue gas from an electric arc furnace 2 of an iron and steel production plant is provided. Each flue gas cooler has a gas inlet chamber 14, a gas outlet chamber 16, and a matrix of gas cooling tubes 18 fluid-connected to the electric arc furnace 2. Each gas cooling tube 18 has an inlet end 19 at an inlet chamber and an outlet end 21 at an outside chamber. Each gas cooling tube 18 has a bell-shaped inlet end 19, and the inlet end comprises an aerodynamically curved gas-accelerating profile effective to facilitate streamlined flow of flue gas into the gas cooling tube.