CO₂ Emission in China’s Iron and Steel Industry

Abstract

CO emissions have become a serious problem in China because of the country’s heavy reliance on fossil fuels as an energy source. The iron and steel industries, the energy consumptions of which are high compared to the rest of the world, are confronted with an increasing demand to reduce CO emissions. Data on CO emissions from iron and steel industries is a basic requirement for a certificate of CO reduction. By analyzing the production process and the influence factors of CO emissions during iron and steel production process, the scope of CO emissions were defined. Material Flow Analysis (MFA) was used to analyze carbon flow from iron and steel production process, and the CO emissions of a typical enterprise were calculated. The existing processing CO emissions reduction technologies were also analyzed, such as blast furnace top gas pressure recovery turbine (TRT), sintering waste heat power generation, converter low pressure saturated steam generation and so on. The technologies including blast furnace stock gas circulation technology, coke oven gas injection technology after reforming, carbon capture and storage technologies and so forth are considered to have a better prospect of application for CO emissions reduction.