F22裂解制TFE工艺本质安全-冷凝脱水非稳态分析
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摘要
对F22裂解制TFE工艺中的冷凝脱水节点进行了非稳态热力学和本质安全分析。利用热量动态平衡方程,对裂解气和冷凝液间的传热行为,建立了TFE冷凝脱水非稳态传热的物理和数学模型;采用有限差分法,借助MATLAB软件进行编程模拟迭代计算,计算结果与现行工业装置实际运行数据相吻合,说明了所建立模型的合理性和可用性。以非稳态热力学计算结果为基础,采用模糊综合评价指数模型对冷凝脱水非稳态过程进行本质安全量化分析,生成了非稳态过程本质安全度的时间过程曲线,为该工艺中TFE冷凝脱水节点相关的安全设计、建设、监控和管理提供理论依据。
The unsteady thermodynamics and inherent safety analysis of the condensate dehydration unit in the TFE production process of F22 cracking were carried out.Based on the thermal equilibrium equation,the physical and mathematical models of unsteady heat transfer in condensing dehydration of TFE were established for the heat transfer between cracking gas and condensate.The finite difference method was used to simulate the unsteady heat transfer in dehydration process by the iterative calculation with MATLAB software.The calculation was confirmed with feasibility and availability in accordance with the actual operation data of a current TFE plant.Based on the unsteady calculation,the fuzzy comprehensive evaluation index model was used to analyze the inherent safety of the unit.The time course profile of the inherent safety of the unsteady process can be generated,which can provide the theoretical basis for the safety design,construction,monitoring and management of the TFE condensate dehydration node in this process.
The unsteady thermodynamics and inherent safety analysis of the condensate dehydration unit in the TFE production process of F22 cracking were carried out.Based on the thermal equilibrium equation,the physical and mathematical models of unsteady heat transfer in condensing dehydration of TFE were established for the heat transfer between cracking gas and condensate.The finite difference method was used to simulate the unsteady heat transfer in dehydration process by the iterative calculation with MATLAB software.The calculation was confirmed with feasibility and availability in accordance with the actual operation data of a current TFE plant.Based on the unsteady calculation,the fuzzy comprehensive evaluation index model was used to analyze the inherent safety of the unit.The time course profile of the inherent safety of the unsteady process can be generated,which can provide the theoretical basis for the safety design,construction,monitoring and management of the TFE condensate dehydration node in this process.
引文
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[2]刘岭梅,管新华.四氟乙烯装置工业脱水优化技术研究[J].有机氟工业,2007,(01):3-4+8.
[3]白二川.半水煤气直冷塔的计算与设计[J].化肥设计,2010,(02):11-15.
[4]孙宝芝,曹民侠,赵嘉明,等.管壳式换热器瞬态换热性能分析[J].哈尔滨工程大学学报,2007,28(12):1332-1336.
[5]张贤福,刘丰,孙志刚,等.固定管板管壳式换热器瞬态热应力分析[J].压力容器,2016,(05):34-38+80.
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[7]Gentile,M.,W.J.Rogers and M.S.Mannan,Development of a Fuzzy Logic-Based Inherent Safety Index[J].Process Safety and Environmental Protection,2003,81(6):444-456.
[8]Mostafizur Rahman,Anna-Mari Heikkila,Markku Hurme.Comparison of inherent safety indices in process concept evaluation[J].Journal of Loss Prevention in the Process Industries,2005,18(4/6):327~334.
[9]王骥程,祝和云.化工过程控制工程(第二版)[M].北京:化学工业出版社,1991,270-274.
[10]王双成.填料型饱和热水塔气相传质系数与传热系数的计算与应用[J].化肥设计,1999,(01):13-15.
[11]Anna-Mari Heikkil.Inherent safety in process plant design—An index-based approach[D].Espoo,Finland:Helsinki University of Technology,1999.
[12]叶君乐,蒋军成,阴健康,等.基于模糊综合评价的化工工艺本质安全指数研究[J].中国安全科学学报,2010,(06):125-130.
[13]姜彦东,陈春燕,魏欣,等.基于变权思想的化工路线本质安全化研究[C].中国广西柳州:科学发展和安全健康—中国职业安全健康协会2011年学术年会,2011.