D01:10.13374.isml00103x.2009.09.24 第31卷第9期 北京科技大学学报 Vol.31 No.9 2009年9月 Journal of University of Science and Technology Beijing Sp.2009 钢铁企业能耗瓶颈诊断数学模型及应用 王刚1,2)白皓) 苍大强)张延玲) 宗燕兵) 1)北京科技大学治金与生态工程学院，北京1000832)中治赛迪工程技术股份有限公司炼铁事业部。重庆400013 摘要针对钢铁厂物质流和能量流对能耗同时产生影响的问题，建立了能耗瓶颈诊新模型.模型分别用钢比系数和工序能 耗衡量物质流和能量流.其功能是将吨钢综合能耗的变化分解为钢比系数的变化和工序能耗的变化，从而将两种因素的影响 相分离，寻找能耗瓶颈.模型分析通过三步进行，分别针对总流程，区域和工序，形成了系统的分析体系.同时，提出了贡献指 数的概念，以定量地描述各个因素对吨钢综合能耗的影响大小.利用该模型对某钢厂2001年和2007年的能耗指标进行实例 分析，找出了相应的能耗瓶颈为炼铁区域和轧钢区域钢比系数的增加与炼钢区域工序能耗的上升，并提出了增加热送热装 比、降低加热炉燃料消耗等节能对策。 关键词能耗节能：诊断模型：钢比系数 分类号F407.3:TK018 Mathematical model for diagnosis of energy consumption bottlenecks in steel plants and its application WANG Gang2.BAl Hao.CANG Da-qiang.ZHANG Yan-ling".ZONG Yan-bing 1)School of Metallurgical and Ecological Engineering.University of Science and Technology Beijing.Beijng 100083.China 2)Iron Makin Dept..CIS DI Engineering Co.Ltd..Chongqing 400013.China ABSTRACT In order to solve the problem that material flow s and energy flows both have influences on energy consumption in steel plants,a diagnosis model of energy consumption bottlenecks was established.The model uses sted ratio and process energy consump tion to measure the material flow s and energy flows,respectively.The function of the model is to decompose the change in energy consumption per ton sted into the changes in steel ratio and process eergy consumption,so that the two factors effects can be sepa- rated,and thus the energy consumption bottlenecks can be found.The modd analysis was done through three steps.correspondingly aiming at the mairprocess stream.the distric and the process.Meanwhile,a new concept of contribution index was defined,which can indicate the effects of every factor on the energy oonsumption per ton steel The model was applied to analyze the energy con sumption indexes of a typical iron and steel enterprise in China using the data of energy consumption in 2001 and 2007,and the ener- gy consumption bottlenecks in the steelmaking process were analy zed.The result shows that the restraining factors of energy com sumption are the steel ratio of iron making distric and steel rolling district and the process energy consumption of steel making dis- trict.At last,energy-saving measues,such as increasing the ratio of hot load and hot transportation and cutting down the fuel co sumption of heating furnaces,were proposed. KEY WORDS energy consumption:energy-saving diagnosis model:steel ratio 吨钢综合能耗是钢铁厂常用的衡量能耗水平高 比，用来衡量能量流.对于钢铁企业，能耗的高低与 低的指标.是指钢铁厂当年的所有能源消耗总量与 物质流和能量流两个因素都有关系.吨钢综合能耗 钢产量的比值.钢比系数是指钢铁企业某工序的产 降低，可能是物质流的贡献，而能量流起反作用：反 量与钢产量之比，用来衡量物质流：而工序能耗是指 之，吨钢踪合能耗升高，也可能是物质流在起作用， 钢铁厂某道工序的能源消耗量与该道工序的产量之而能量流本身是降低的.长期以来，面对物质流和 收稿日期：200811-05 作者简介：王刚(1983一)，男，顾士研究生：白皓(1969一)，男，副教授，E-maik baihao@metall.ustb.du.am钢铁企业能耗瓶颈诊断数学模型及应用 王 刚1, 2) 白 皓1) 苍大强1) 张延玲1) 宗燕兵1) 1) 北京科技大学冶金与生态工程学院, 北京 100083 2) 中冶赛迪工程技术股份有限公司炼铁事业部, 重庆 400013 摘 要 针对钢铁厂物质流和能量流对能耗同时产生影响的问题, 建立了能耗瓶颈诊断模型.模型分别用钢比系数和工序能 耗衡量物质流和能量流, 其功能是将吨钢综合能耗的变化分解为钢比系数的变化和工序能耗的变化, 从而将两种因素的影响 相分离, 寻找能耗瓶颈.模型分析通过三步进行, 分别针对总流程、区域和工序, 形成了系统的分析体系.同时, 提出了贡献指 数的概念, 以定量地描述各个因素对吨钢综合能耗的影响大小.利用该模型对某钢厂 2001 年和 2007 年的能耗指标进行实例 分析, 找出了相应的能耗瓶颈为炼铁区域和轧钢区域钢比系数的增加与炼钢区域工序能耗的上升, 并提出了增加热送热装 比、降低加热炉燃料消耗等节能对策. 关键词 能耗;节能;诊断模型;钢比系数 分类号 F407.3 ;TK 01 +8 Mathematical model for diagnosis of energy consumption bottlenecks in steel plants and its application WANG Gang 1, 2) , B AI Hao 1) , CANG Da-qiang 1) , ZHANG Yan-ling 1) , ZONG Yan-bing 1) 1) School of Met allurgical and Ecologi cal Engineering, University of Science and T echnology Beijing, Beijing 100083, China 2) Iron Making Dept., C ISDI Engineering Co .Ltd., Chongqing 400013, China ABSTRACT In order to solv e the problem that material flow s and energy flows bo th have influences on energy consumption in steel plants, a diag nosis model of energ y consumption bo ttlenecks was established.The model uses steel ratio and process energy consump￾tio n to measure the material flow s and energy flow s, respectively.The function of the model is to decompose the change in energy consumption per to n steel into the chang es in steel ratio and process energy consumption, so that the two facto rs' effects can be sepa￾rated, and thus the ener gy co nsumption bottlenecks can be found.The model analysis was done throug h three steps, co rrespondingly aiming a t the main-process stream, the district and the process .Meanwhile, a new concept o f contribution index was defined, w hich can indicate the effects of every factor on the energy consumption per ton steel.The model was applied to analyze the energy co n￾sumption indexes of a typical iron and steel enterprise in China using the data of energy consumption in 2001 and 2007, and the ener￾gy consumptio n bottlenecks in the steelmaking process w ere analy zed.The result shows that the restraining facto rs of energy co n￾sumption are the steel ratio of iron making district and steel rolling district and the process energy co nsumption of steel making dis￾trict.At last, energy-saving measures, such asincreasing the ratio of hot load and hot transportation and cutting down the fuel co n￾sumption of heating furnaces, were proposed . KEY WORDS energ y co nsumption ;energy-saving;diagnosis model ;steel ratio 收稿日期:2008-11-05 作者简介:王 刚( 1983—) , 男, 硕士研究生;白 皓( 1969—) , 男, 副教授, E-mail:baihao@metall.ustb.edu.cn 吨钢综合能耗是钢铁厂常用的衡量能耗水平高 低的指标, 是指钢铁厂当年的所有能源消耗总量与 钢产量的比值.钢比系数是指钢铁企业某工序的产 量与钢产量之比, 用来衡量物质流 ;而工序能耗是指 钢铁厂某道工序的能源消耗量与该道工序的产量之 比, 用来衡量能量流.对于钢铁企业, 能耗的高低与 物质流和能量流两个因素都有关系 .吨钢综合能耗 降低, 可能是物质流的贡献, 而能量流起反作用;反 之, 吨钢综合能耗升高, 也可能是物质流在起作用, 而能量流本身是降低的 .长期以来, 面对物质流和 第 31 卷 第 9 期 2009 年 9 月 北 京 科 技 大 学 学 报 Journal of University of Science and Technology Beijing Vol .31 No.9 Sep.2009 DOI :10.13374/j .issn1001 -053x.2009.09.024