Energy and Exergy Consumption and CO sub(2) Emissions in an Ironmaking Process

• Published in: Advances in environmental research : an international journal of research in environmental science, engineering and technology Vol. 6; no. 2; p. 157
• Main Authors: Petela, R, Hutny, W, Price, J T
• Format: Journal Article
• Language: English
• Published: 01.03.2002
• ISSN: 1093-0191

Energy and exergy consumption and carbon dioxide (CO sub(2)) emissions in an ironmaking process was investigated. The conventional coke-based blast furnace released significant amounts of carbon oxides CO, CO sub(2) to the environment, and consumed a large amount of energy which was produced also with generation of carbon oxides during utilization of chemical energy from natural fuel resources. The energy savings could be obtained by improving the energy generation and utilization of the generated energy. The results showed that the injection of lignite or subbituminous coal, and the injection of natural gas at any rate, did not result in reduction of energy consumption index E. It was concluded that the injection of natural gas reduces CO sub(2) emission but increased the energy and exergy consumption as compared to traditional ironmaking.