Waste energy recovery and energy efficiency improvement in China's iron and steel industry
Waste energy recovery and energy efficiency improvement in China's iron and steel industry
复制标题
DOI：
10.1016/j.apenergy.2017.01.072
复制
发表时间：
2017-04-01
期刊：
影响因子：
11.2
通讯作者：
Li, Yu
中科院分区：
文献类型：
--
作者：
Zhang, Qi;Zhao, Xiaoyu;Li, Yu
废能回收利用是全球钢铁工业减少一次能源、提高能源效率的重要机遇。然而，由于缺乏全面和实用的方法，浪费能源的确切数量往往很难量化。本文开发了一个创新的技术经济模型来量化这种机会，将理论，技术和经济潜力与废物能源资源和废物回收技术的特点联系起来。各种形式的废物能源，如显热，压力能，和化学能，进行了检查。此外，还建立了四个情景，对技术推广和结构调整协同作用下的未来节能潜力和能耗降低进行了评估。研究结果表明，在考虑技术实施率为行业平均值时，实际潜力的比例不到20%。精选的35项节能技术累计节能3.08 CV粗钢，技术实施对降低能耗发挥了重要作用。敏感性分析表明，能源价格和贴现率是最敏感的因素。(C)2017爱思唯尔有限公司版权所有
Waste energy recovery and utilization presents a crucial opportunity in primary energy reduction and energy efficiency improvement for the global iron and steel industry. However, lack of comprehensive and practical methodology, the exact quantity of waste energy is often poorly quantified. This paper develops an innovative techno-economic model to quantify this opportunity that links theoretical, technical, and economic potential with the characteristics of waste energy resources and waste recycling technologies. Various forms of waste energy, such as sensible heat, pressure energy, and chemical energy, were examined. In addition, four scenarios were established to evaluate future energy saving potential and energy consumption reduction under the synergistic effect of technology promotion and structure adjustment. Findings show that the proportion of practical potential is less than 20% when considering the technical implementation rate for the average industry value. The selected 35 energy-saving technologies contribute to 3.08 CV crude steel of cumulative energy savings, and technology implementation plays a significant role in energy consumption reduction. A sensitivity analysis indicates that energy price and discount rate are the most sensitive factors. (C) 2017 Elsevier Ltd. All rights reserved.