东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (2): 212-217.DOI: 10.12068/j.issn.1005-3026.2019.02.012

• 材料与冶金 • 上一篇    下一篇

“中国式”电炉炼钢流程碳排放特点及其源解析

那洪明1, 2， 高成康1, 2， 郭玉华3， 田凡1, 2   

  1. (1. 东北大学 冶金学院， 辽宁 沈阳110819; 2. 东北大学 国家环境保护生态工业重点实验室， 辽宁 沈阳110819; 3. 钢铁研究总院 先进钢铁流程及材料国家重点实验室， 北京100081)
  • 收稿日期:2017-12-25 修回日期:2017-12-25 出版日期:2019-02-15 发布日期:2019-02-12
  • 通讯作者: 那洪明
  • 作者简介:那洪明(1991-)，男，黑龙江绥化人，东北大学博士研究生.
  • 基金资助:
    国家自然科学基金资助项目(41871212)； 中央高校基本科研业务费专项资金资助项目 (N172504031)； 国家重点研发计划项目(2017YFC0212303-03)； 国家留学基金委资助项目(201606085050).

CO2 Emissions Characteristics and Source Analysis of “Chinese Style” Electric Arc Furnace Steelmaking Route

NA Hong-ming1, 2， GAO Cheng-kang1, 2， GUO Yu-hua3， TIAN Fan1, 2   

  1. 1. School of Metallurgy， Northeastern University， Shenyang 110819， China; 2. SEP Key Laboratory of Eco-industry， Northeastern University， Shenyang 110819， China; 3. State Key Laboratory of Advanced Steel Processes and Products， Central Iron & Steel Research Institute， Beijing 100081， China.
  • Received:2017-12-25 Revised:2017-12-25 Online:2019-02-15 Published:2019-02-12
  • Contact: GAO Cheng-kang
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摘要： 电炉炼钢流程，因其注入过多铁水在中国并未发挥减碳作用，本文称其为“中国式”电炉炼钢流程.对此，本文在建立研究边界的基础上，结合排放因子法，构建了“中国式”电炉炼钢流程的碳排放桑基图，探寻碳排放的路径.结果显示:采用“中国式”电炉炼钢，吨钢CO2排放量为3.070t.其中，电炉炼钢工序CO2排放量最大，为1.400t.特别地，代替废钢加入铁水导致CO2排放1.419t.分析发现:中国钢铁企业处于成长期，废钢指数小，废钢资源不足;废钢回收利用系统不完善;工业用电价格高.这些因素造成电炉炼钢流程采用了过多的铁水进行冶炼.

关键词: “中国式”电炉炼钢流程, CO2排放, 铁水, 排放因子法, 废钢指数

Abstract: Electric arc furnace steelmaking route does not play the role of carbon reduction in China due to the excessive use of hot metal. This unique route is called the “Chinese style” electric arc furnace steelmaking route. Employing the emission factor method， the Sankey diagram of CO2 emissions of “Chinese style” electric arc furnace steelmaking route is built to explore the path of carbon emissions. The results show that the CO2 emissions per ton of steel in the whole route are 3.070t， among which the CO2 emissions from electric arc furnace steelmaking takes the largest share of 1.400t. Particularly， excessive CO2 emissions of 1.419t are produced because of the utilization of hot metal for electric arc furnace steelmaking. The reason for the excessive use of hot metal is that China’s steel industry is in the developing period， the scrap steel index is low， the recovery and utilization system of scrap steel is incomplete and the price of industrial electricity is high.

Key words: “Chinese style” electric arc furnace steelmaking route, CO2 emissions, hot metal, emission factor method, scrap steel index

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