MTA废气分析在VOD脱碳过程中的应用
|
摘要
为了实现对VOD脱碳终点碳含量进行动态控制,以某钢厂120tVOD炉冶炼不锈钢的脱碳过程为研究对象,通过MTA(multi task analyzer)废气分析系统分析VOD精炼中CO、CO_2等废气成分随时间变化的规律。同时以物质碳平衡为基础,建立了基于废气分析的VOD冶炼碳终点控制的模型,对精炼过程中钢水碳变化情况进行分析。通过对实际值和预测值之间的偏差进行考察,说明了模型能够较好地预测碳含量的总体发展趋势。模型计算VOD脱碳终点碳质量分数误差都在±0.03%之内,模型计算值与实际测量值具有一定的吻合性。
In order to control the carbon content at the end point of VOD decarburization process,taking the decarburization process of stainless steel in a 120 tVOD furnace in a steel plant as the research object,the waste gas was analyzed by the MTA waste gas analysis system to know the change law of CO,CO_2 and other components over time during VOD refining.At the same time,on the basis of the material carbon balance calculations,a control model of the carbon content at the end point of VOD refining process based on the waste gas analysis was established,and the carbon change in the molten bath during the refining process was analyzed.By examining the deviation between the actual value and the predicted value,it was verified that the model can predict the overall trend of the carbon content,and the calculation results obtained from the model showed that the precision of carbon mass fraction at the end point of VOD treatment was within ±3×10~(-4),which inoculated with the measured ones.
In order to control the carbon content at the end point of VOD decarburization process,taking the decarburization process of stainless steel in a 120 tVOD furnace in a steel plant as the research object,the waste gas was analyzed by the MTA waste gas analysis system to know the change law of CO,CO_2 and other components over time during VOD refining.At the same time,on the basis of the material carbon balance calculations,a control model of the carbon content at the end point of VOD refining process based on the waste gas analysis was established,and the carbon change in the molten bath during the refining process was analyzed.By examining the deviation between the actual value and the predicted value,it was verified that the model can predict the overall trend of the carbon content,and the calculation results obtained from the model showed that the precision of carbon mass fraction at the end point of VOD treatment was within ±3×10~(-4),which inoculated with the measured ones.
引文
[1]万雪峰,李德刚,廖相巍,等.转炉炉气分析技术的发展及应用[J].鞍钢技术,2009(5):7.
[2]刘锟,刘浏,何平,等.烟气分析动态控制系统在60t转炉上的应用[J].钢铁,2008,43(2):41.
[3]Kirschen M,Pfeifer H,Deng J X,et al.Off-gas measurements at the EAF primary dedusting system of electric arc furnaces[J].Stahl Eisen,2004,124(11):73.
[4]Khan M,Zuliani D.EAF water detection using off-gas measurement[C]//AISTech 2009Proceedings.St.Louis:Association of Iron and Steel Technology,2009:549.
[5]Choudhury A,Bruckmann G,Scholz H.Computerized control of the VOD process with the application of a mass spectrometer[J].Metall Plant Technol,1988,11(5):44.
[6]刘柏松,朱国森,李本海,等.废气分析在RH脱碳过程中的应用[J].钢铁,2010,45(2):23.
[7]林路,包燕平,岳峰,等.基于废气分析的RH脱碳模型[J].北京科技大学学报,2011(增刊1):20.
[8]Chiang M S,Lin C T,Chou C L,et al.Application of off-gas analysis for RH decarburization process[J].SEAISI Quarterly(Malaysia),1997,26(2):27.
[9]祁一星,张彦召,薛良良,等.影响VOD精炼的工艺因素[J].大型铸锻件,2017(5):32.
[10]董园园,邢惠凌,赵征,等.MTA多功能废气分析仪在VOD工艺的应用[C]//2009年河北省冶金学会炼钢-连铸技术与学术年会论文集.唐山:河北省冶金学会,2009:4.
[11]陆世英.不锈钢[M].北京:中国原子能出版社,1995.
[12]李实,李青,洪新,等.基于质谱仪炉气分析的VOD精炼过程模型开发[J].上海金属,2015,37(3):36.
[13]XU Y,CHEN Z,ZHANG G.Kinetic model of decarburization and denitrogenation in vacuum oxygen decarburization process for ferritic stainless steel[J].Metallurgical and Materials Transactions:B,2009,40(3):345.
[2]刘锟,刘浏,何平,等.烟气分析动态控制系统在60t转炉上的应用[J].钢铁,2008,43(2):41.
[3]Kirschen M,Pfeifer H,Deng J X,et al.Off-gas measurements at the EAF primary dedusting system of electric arc furnaces[J].Stahl Eisen,2004,124(11):73.
[4]Khan M,Zuliani D.EAF water detection using off-gas measurement[C]//AISTech 2009Proceedings.St.Louis:Association of Iron and Steel Technology,2009:549.
[5]Choudhury A,Bruckmann G,Scholz H.Computerized control of the VOD process with the application of a mass spectrometer[J].Metall Plant Technol,1988,11(5):44.
[6]刘柏松,朱国森,李本海,等.废气分析在RH脱碳过程中的应用[J].钢铁,2010,45(2):23.
[7]林路,包燕平,岳峰,等.基于废气分析的RH脱碳模型[J].北京科技大学学报,2011(增刊1):20.
[8]Chiang M S,Lin C T,Chou C L,et al.Application of off-gas analysis for RH decarburization process[J].SEAISI Quarterly(Malaysia),1997,26(2):27.
[9]祁一星,张彦召,薛良良,等.影响VOD精炼的工艺因素[J].大型铸锻件,2017(5):32.
[10]董园园,邢惠凌,赵征,等.MTA多功能废气分析仪在VOD工艺的应用[C]//2009年河北省冶金学会炼钢-连铸技术与学术年会论文集.唐山:河北省冶金学会,2009:4.
[11]陆世英.不锈钢[M].北京:中国原子能出版社,1995.
[12]李实,李青,洪新,等.基于质谱仪炉气分析的VOD精炼过程模型开发[J].上海金属,2015,37(3):36.
[13]XU Y,CHEN Z,ZHANG G.Kinetic model of decarburization and denitrogenation in vacuum oxygen decarburization process for ferritic stainless steel[J].Metallurgical and Materials Transactions:B,2009,40(3):345.