After being filtered, exhaust gas is expelled through the stack. Stack emissions are measured for pollutants so careful monitoring is essential.
Hot, Particulates, Erratic Flow, High Volume
Combustion Exhaust Gas
Gas exhausted from the smelter may be recirculated back to the burner, to heat exchangers or to power cogeneration. After it has been cycled through the burner sufficiently to minimize unburned compounds it is filtered and sent to the stack.
Very Hot, Particulates, Corrosive, Errosive
Fuel is pumped into the blast furnace in tightly controlled amounts. Careful measurement of fuel ensures a clean and efficient burn. Depending on furnace design fuel gas may be injected at up tp 24 seperate firing ports.
High Flow Rate, Pressurized, Combustible
Primary Air provides oxygen to the combustion chamber. Precise control of airflow is neccessary to achieve a proper air/fuel ratio and to burn cleanly and efficiently. Air is injected higher in the burner as well to ensure thorough burn of noxious gases.
High Flow Rate, High Volume