首页|Energy saving analysis for CO2-O2 mixed injection technology in converter steelmaking
Energy saving analysis for CO2-O2 mixed injection technology in converter steelmaking
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Energy-saving in China's iron and steel industry still relies on the development and improvement of short-term energy saving technologies.Therefore,a special converter smelting technology incorporating energy saving was proposed.To evaluate the energy-saving potential of the CO2-O2 mixed injection(COMI)technology,collected production data were used to develop an improved techno-economic model.Calculations reveal that the technology can save energy through auxiliary material consumption,sensible heat of solid by-product,iron loss reduction,and energy recovery.The application of COMI technology in an enterprise is cost effective,involving the energy saving potential of 0.206 GJ/t,the cost of conserved energy of-48.83 yuan/GJ,and a simple payback period of 0.35 year for a 60-million-yuan investment.Sensitivity analysis shows that the investment cost and discount rate primarily influence the cost of conserved energy of the technology.As the discount rate increased,the cost of conserved energy also gradually increased.Overall,the COMI technology is an energy-saving technology with good development prospects.
Hebei Key Laboratory of Material Near-Net Forming Technology,School of Material Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei,China
Department of Automotive Engineering,Hebei Vocational University of Technology and Engineering,Xingtai 054000,Hebei,China
School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China
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