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Technology portfolio assessment for near-zero emission iron and steel industry in China

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Advances in Climate Change Research 2023年第3期14卷 469-478页

作者： Wei-Yi JIANG Tae Yong JUNG Han-Cheng DAI Pian-Pian XIANG Graduate School of International Studies Yonsei UniversitySeoul 03722South Korea College of Environmental Science and Engineering Peking UniversityBeijing 100871China Faculty of Environment and Life Beijing University of TechnologyBeijing 100124China

China aims to peak CO_(2)emissions before 2030 and to achieve carbon neutrality before 2060;hence,industrial sectors in China are keen to figure out appropriate pathways to support the national target of carbon neutrality.The objective of this study is to explore near-zero emission pathways for the steel industry of China through a detailed technology assessment.The innovative technology development has been simulated using the AIM-China/steel model,developed by including material-based technologies and optimal cost analysis.Six scenarios have been given in terms of different levels of production output,emission reduction and carbon tax.Near-zero emission and carbon tax scenarios have shown that China's steel industry can achieve near-zero emission using electric furnaces and hydrogen-based direct reduction iron technologies with policy support.Based on these technologies,minimised production costs have been calculated,revealing that the steel produced by these technologies is cost-effective.Moreover,the feedstock cost can play a key role in these technology portfolios,especially the cost of scrap,iron ore and hydrogen.In addition,the feedstock supply can have strong regional effects and can subsequently impact the allocation of steelmaking in the future.Therefore,China can achieve near-zero emissions in the steel industry,and electric furnace and hydrogen-based direct reduction iron technologies are crucial to achieving them.

关键词： steel industry Near-zero emission Cost optimisation Climate change Carbon neutrality Technology learning

An Optimized Oxygen System Scheduling With Electricity Cost Consideration in steel industry

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IEEE/CAA Journal of Automatica Sinica 2017年第2期4卷 216-222页

作者： Zhongyang Han Jun Zhao Wei Wang Faculty of Electronics Information and Electrical Engineering Dalian University of Technology IEEE

As an essential energy resource in steel industry,oxygen is widely utilized in many production procedures.With different demands of the oxygen amount,a gap between the generation and consumption always occurs.Therefore,its related optimization and scheduling work along with the electricity cost to fill the gap has a great impact on daily production and efficient energy utilization in steel plant.Considering an oxygen system in a steel plant in China,a nonlinear programming model for oxygen system scheduling is proposed in this study,which concerns not only the practical characteristics of the energy pipeline network,but also the electricity cost acquired by a fitting regression modeling between the load of air separation units(ASU)and its corresponding electricity consumption.A set of constraints is formulated for restricting the practical adjusting capacity and filling the imbalance gap of oxygen.To solve the proposed scheduling model with electricity cost consideration,a particle swarm optimization(PSO)algorithm is then adopted.To verify the effectiveness of the proposed approach,a large number of experiments employing the real data from this plant are carried out,both for the fitting regression and the scheduling optimization phases.And the results demonstrate that such a practice-based solution successfully resolves the oxygen scheduling problem and simultaneously minimizes the electricity cost,which will be beneficial for the enterprise.

关键词： Electricity consumption nonlinear programming oxygen scheduling steel industry

Time to change the energy conservation direction of China’s steel industry: From upgrading the technology level to increasing scrap ratio

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Science China(Technological Sciences) 2020年第1期63卷 128-139页

作者： HE Kun WANG Li School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China Beijing Engineering Research Center for Energy Saving&Environmental Protection Beijing 100083China

A new energy intensity(EI)index for steel production-energy intensity at specific scrap ratio(EISR)index-is developed in this study to provide a method for analyzing the EI difference of steel production through a case-study analysis for China and Japan.The real cause of EI change of China’s key steel enterprises from 2006–2014 is also studied by using the EISR index.Result shows significant technology progress decreases the EI of China’s key steel enterprises by 16%from 2006 to 2014,but the final drop of comparable EI was only 12.3%due to the continued decreased scrap ratio(SR).From 2006 to 2014,the main cause of EI gap between China’s key steel enterprises and Japan’s steel industry changed from gap in technological level to difference in SR.In factor analysis that assumed Japanese share of electric arc furnace production(23.2%)and SR(33.3%)in 2014 in China,the EI of China’s key steel enterprises decreased to 612 kgce/t(kilogram standard coal/t)(primary energy consumption),which is almost same as Japan’s data.The key task of energy conservation in China’s key steel enterprises in the future should be changed from upgrading the technology level to increase the SR of steel production.

关键词： steel industry energy intensity energy conservation scrap ratio

Emission Mitigation of CO_2 in steel industry: Current Status and Future Scenarios

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Journal of Iron and steel Research(International) 2006年第6期13卷 38-42,52页

作者： HU Chang-qing CHEN Li-yun ZHANG Chun-xia QI Yuan-hong YIN Rui-yu School of Metallurgy and Energy Hebei Polytechnic University Tangshan 063009 Hebei China State KeyLaboratory of Advanced steel Process and Products Central Iron and Steel Research Institute Beijing 100081 China

The sustainable development against global warming is a challenge faced by societies at global level. For steel industry; the pressure of reducing CO2 emission is likely to last many years. During the past decades, the CO2 emission per ton steel has been reduced mainly due to the improvement of energy efficiency. Entering the 21st century, the steel manufacturing route must have three functions, namely, production of high performance steel products, conversion of energy, and treatment of waste. In the near future, it is expected that existing BF-BOF and EAF routes will be improved, in order to produce high performance steels, increase the use of scrap, and integrate steel industry with other industries for mitigating CO2 emission. In the long term, using carbon-free energy, reducing agents, and storing CO2 securely or converting CO2 into a harmless substance can be presumed for tremendous reduction in CO2 emission.

关键词： global warming CO2 emission steel industry emission mitigation

Carbon Reduction Programs and Key Technologies in Global steel industry

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Journal of Iron and steel Research(International) 2014年第3期21卷 275-281页

作者： Jian-xun FU Guo-hao TANG Ren-jie ZHAO Weng-sing HWANG Key Laboratory of Modern Metallurgy and Materials Processing Shanghai University Department of Materials Science and Engineering Research Center for Energy Technology and StrategyNationalCheng Kung University

Greenhouse gases, particularly the carbon dioxide, cause global warming and extreme weather, which has become a serious threat to human beings. The steel industry creates enormous amounts of carbon emission and has tremendous potential in carbon reduction. Considering the consistently increasing demand of iron and steel, to obtain significant carbon reduction by reducing the steel production is not practical, thus the development and implementa- tion of carbon reduction programs and technologies is important for the steel industry. Despite the significant poten- tial of carbon reduction in the steel industry, ironmaking and steelmaking processes are complex. Therefore, resear- ches and developments for the carbon reduction must focus on key processes. Here, key processes and technologies adopted in ULCOS program in EU, COURSE 50 program in Japan, POSCO program in South Korea, AISI pro- grams in US and other carbon reduction programs are summarized and evaluated, and feasible suggestions for carbon reduction in developing countries are presented. If effective measures can be referred to and taken in developing coun- tries, global carbon emission can be greatly reduced.

关键词： steel industry C02 carbon reduction program carbon reduction technology

Application of Energy Efficiency Optimization Technology in steel industry

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Journal of Iron and steel Research(International) 2014年第S1期21卷 82-86页

作者： En TANG Yuan-jing SHAO Xiao-gang FAN Li-de YE Jun WANG Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology WISDRI Engineering and Research Incorporation Limited

It’s systematically analyzed that energy efficiency optimization technology has been applied in the field of steel industry. The fundamental principal of energy optimization technology is reasonably matching the quality and price of energy as well as energy-dominated systematic energy efficiency management system. Specific measures of energy optimization have been put forward, which include taking high efficiency utilized technology such as energy saving from the original, the production process and recycling of waste heat and waste energy etc., integrating and configuring energy in an optimized way of high efficiency and excellent quality, fully realizing the function of different energy in order to optimize the utilization sequence of energy, and improving the energy medium system by themselves. Finally it is clearly pointed out that the steel industry should pay more consideration about the great deal of energy system which they have used now and an ideal energy evaluation methodology and standard should be built as soon as possible if they want to take full usage of the real role and function of energy in all aspects.

关键词： energy efficiency optimization energy quality energy value steel industry

THE steel industry IN ARAB COUNTRIES

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Acta Metallurgica Sinica(English Letters) 2000年第4期13卷 1012-1022页

作者： S.A. Al-Aghbari and Z. W. Lu Ministry of Oil & Mineral Resources, Republic of Yemen Thermal-Engineering Department, Northeastern University, Shenyang 110006, China

A brief introduction to Arab countries, in respect of their locations, populations, areas and mineral resources, was given. The development of steel industry in Am6 countries in last two decades was staled as a whole. And the steel industries in Egypt, Qatar, Saudi Arabia, United Arch Emirates (UAE), Morocco, Libya, Joanal, Tunisia, Syria, Iraq, Algeria and Bahrain were analyzed separately. Some development problems faced by Arab steel industry, such as steel market, natural resources, manpower and finance, were pointed out.

关键词： steel industry Arab countries mineral resources

Techniques for Treating Sulphuric Acid Pickling Waste Liquid of steel industry

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Meteorological and Environmental Research 2013年第5期4卷 44-49页

作者： Jian Zhai Chunhua Jiang Jian Wu Engineering Technology Research and Development Center of the Chemical Engineering Application in Jiangsu Province Nanjing College of Chemical Technology Jiangsu Academy of Environmental Sciences

Pickling waste liquid of the steel industry is included in National Hazardous Wastes Catalogue because of its high corrosion and large discharge. The techniques for treating pickling waste liquid （ H2SO4 ） in steel industry is summarized. The advantages, disadvantages and applied ranges of all kinds of control technologies are comparatively analysed. The research trends of techniques for treating pickling waste liquid （ H2SO4 ） are the resource reclamation technologies in future which is pointed out in the paper.

关键词： steel industry Pickli＇ng waste liquid Treatment techniques China

Statistics on Iron & steel industry

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China's Refractories 2008年第2期17卷 51-54页