D0L:10.13374折.issn1001-053x.2012.12.013 第34卷第12期 北京科技大学学报 Vol.34 No.12 2012年12月 Journal of University of Science and Technology Beijing Dec.2012 钢铁企业能源消耗与CO,减排关系 卢 鑫12白皓12☒ 赵立华12) 刘雪婷”苍大强2 1)北京科技大学冶金与生态工程学院，北京100083 2)北京科技大学钢铁治金新技术国家重点实验室，北京100083 ☒通信作者，E-mail:baihao(@metall.usth.cdu.cn 摘要建立了钢铁企业长流程C02过程排放模型，给出总排放和工序排放的计算方法.计算发现：国内某800万t产量规 模的典型钢铁企业C02总排放在2007年达到1561.64万t,吨钢排放1.85tC02:工序排放从大到小依次为炼铁、焦化、烧结、 轧钢、炼钢、熔剂焙烧和球团工序，其中炼铁和焦化工序排放分别占总排放的8.83%和11.25%。为了评价钢铁企业能源消 耗和CO,减排关系，提出钢铁企业C0,综合排放因子和能耗碳饱和指数评价方法.研究表明，为了减少C0,排放，钢铁企业 不仅需要降低总体能耗，还需要降低能耗的碳饱和指数，能耗碳饱和指数与能源结构相关，能源结构中C0,总影响系数大的 能源种类消耗量越大（例如焦炭），碳饱和指数越高，越不利于C0,的减排.这说明实现钢铁生产的生态园区化、优化能源结 构以及加强钢铁生产的能源转换功能对钢铁企业减排有显著作用. 关键词钢铁企业：二氧化碳：气体排放：排放控制：能源消耗 分类号F407.3:TK018 Relationship between the energy consumption and CO,emission reduction of iron and steel plants LU Xin,BAI Hao,ZHAO Li-hua,LIU Xue-ting,CANG Da-giang) 1)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:baihao@metall.ustb.edu.cn ABSTRACT A CO2 process emission model was built to calculate the CO2 emission of iron and steel plants for total and each process.The total emission of a specific plant with the productivity of about 8 million tons per year is 15.61 million tons and the emis- sion intensity is 1.85 t CO,for per ton of steel.Calculation results show that the order from the highest emission to the lowest one is BF,coking,sintering,rolling,BOF,flux roasting,and pelletizing process:the BF process and coking process account for 58.83% and 11.25%of the total emission,respectively.The general emission factor (GEF)and carbon saturation index (CSI)were proposed to evaluate the relationship between energy consumption and CO,emissions in iron and steel making.It is found that the reduction of CO,emissions results from not only energy saving but also the CSI reduction;the CSI has a significant relationship with the energy structure,and the higher percentage of energy with a higher total CO impact coefficient in the energy structure (coke for example)will results in a higher CSI,which has negative effect on the reduction of CO2 emissions.Developing eco-industrial parks,optimizing the energy structure,and enhancing the energy transform function of iron and steel making all have significant benefit on the reduction of CO,emissions. KEY WORDS iron and steel plants;carbon dioxide:gas emissions:emission control:energy consumption 温室气体特别是C02在大气中含量的增加，已 化铁为主的高温化学过程，生产过程中会排放大量 成为导致全球气候变化的主要原因，减碳成为实现 的CO2.据政府间气候变化专门委员会(ntergovern-- 可持续发展的必由之路口.钢铁生产是以碳还原氧 mental Panel on Climate Change,PCC)20o1年估计 收稿日期：2011-10-08第 34 卷 第 12 期 2012 年 12 月 北京科技大学学报 Journal of University of Science and Technology Beijing Vol． 34 No． 12 Dec． 2012 钢铁企业能源消耗与 CO2 减排关系 卢 鑫1，2) 白 皓1，2)  赵立华1，2) 刘雪婷1) 苍大强1，2) 1) 北京科技大学冶金与生态工程学院，北京 100083 2) 北京科技大学钢铁冶金新技术国家重点实验室，北京 100083  通信作者，E-mail: baihao@ metall． ustb． edu． cn 摘 要 建立了钢铁企业长流程 CO2 过程排放模型，给出总排放和工序排放的计算方法． 计算发现: 国内某 800 万 t 产量规 模的典型钢铁企业 CO2 总排放在 2007 年达到 1561. 64 万 t，吨钢排放 1. 85 t CO2 ; 工序排放从大到小依次为炼铁、焦化、烧结、 轧钢、炼钢、熔剂焙烧和球团工序，其中炼铁和焦化工序排放分别占总排放的 58. 83% 和 11. 25% ． 为了评价钢铁企业能源消 耗和 CO2 减排关系，提出钢铁企业 CO2 综合排放因子和能耗碳饱和指数评价方法． 研究表明，为了减少 CO2 排放，钢铁企业 不仅需要降低总体能耗，还需要降低能耗的碳饱和指数，能耗碳饱和指数与能源结构相关，能源结构中 CO2 总影响系数大的 能源种类消耗量越大( 例如焦炭) ，碳饱和指数越高，越不利于 CO2 的减排． 这说明实现钢铁生产的生态园区化、优化能源结 构以及加强钢铁生产的能源转换功能对钢铁企业减排有显著作用． 关键词 钢铁企业; 二氧化碳; 气体排放; 排放控制; 能源消耗 分类号 F407. 3; TK01 + 8 Relationship between the energy consumption and CO2 emission reduction of iron and steel plants LU Xin1，2) ，BAI Hao 1，2)  ，ZHAO Li-hua1，2) ，LIU Xue-ting1) ，CANG Da-qiang1，2) 1) School of Metallurgical and Ecological Engineering，University of Science and Technology Beijing，Beijing 100083，China 2) State Key Laboratory of Advanced Metallurgy，University of Science and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: baihao@ metall． ustb． edu． cn ABSTRACT A CO2 process emission model was built to calculate the CO2 emission of iron and steel plants for total and each process． The total emission of a specific plant with the productivity of about 8 million tons per year is 15. 61 million tons and the emis￾sion intensity is 1. 85 t CO2 for per ton of steel． Calculation results show that the order from the highest emission to the lowest one is BF，coking，sintering，rolling，BOF，flux roasting，and pelletizing process; the BF process and coking process account for 58. 83% and 11. 25% of the total emission，respectively． The general emission factor ( GEF) and carbon saturation index ( CSI) were proposed to evaluate the relationship between energy consumption and CO2 emissions in iron and steel making． It is found that the reduction of CO2 emissions results from not only energy saving but also the CSI reduction; the CSI has a significant relationship with the energy structure，and the higher percentage of energy with a higher total CO2 impact coefficient in the energy structure ( coke for example) will results in a higher CSI，which has negative effect on the reduction of CO2 emissions． Developing eco-industrial parks，optimizing the energy structure，and enhancing the energy transform function of iron and steel making all have significant benefit on the reduction of CO2 emissions． KEY WORDS iron and steel plants; carbon dioxide; gas emissions; emission control; energy consumption 收稿日期: 2011--10--08 温室气体特别是 CO2 在大气中含量的增加，已 成为导致全球气候变化的主要原因，减碳成为实现 可持续发展的必由之路［1］． 钢铁生产是以碳还原氧 化铁为主的高温化学过程，生产过程中会排放大量 的 CO2 ． 据政府间气候变化专门委员会( Intergovern￾mental Panel on Climate Change，IPCC) 2001 年估计 DOI:10.13374/j.issn1001-053x.2012.12.013