ABSTRACT
Many industrial continuous processes produce large amounts of hot waste gases. Generation of steam or power from these waste gases has been practiced for a long time. The waste gases can be at high, medium, or low temperature at ∼1000, 500, or 300°C, respectively. The gases can be clean or dust-laden, erosive, and even corrosive. Gases with meaningful calorifi c values (CV) are burnt with or without an additional support fuel. Blast furnace gas (BFG) and coke oven gas (COG) fall in this category. Several waste gases produced at high temperatures or in large volumes that contain considerable heat but no combustibles need only to be cooled (and at times cleaned) before release into the atmosphere. Sponge iron kiln waste gases fall in this category.
