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	Effects of liquid holdup in condensers on the start-up of reactive distillation columns
	Wu, Hui-xiong ; Tang, Zhi-gang ; Gao, Hang-bao ; Hu, Hui ; Lu, Xian-chun ; Li, Shi-yu
	2010-05-07 ; 2010-05-07
关键词	distillation columns holdup modeling optimization reactor columns MULTIPLE STEADY-STATES DYNAMIC SIMULATION OPTIMAL-DESIGN SYSTEM Engineering, Chemical
中文摘要	Compared with start-ups in conventional distillation columns, those in reactive distillation (RD) columns are much more time and energy consuming, and generate a large amount of by-products which are not easy to deal with together. For several years, researchers have been trying out different methods to shorten the time required to lower the cost of the start-up. In this work, a rigorous dynamic model in the ChemCAD simulator is applied to model the start-up process for the esterification of ethyl acetate in a reactive distillation column. In the model, two sets of equations are employed: one for the fill-up and heating stage and the other for the equilibration process which follows. In the fill-up and heating stage, fluctuation curves of the reboiler temperatures with respect to time which are similar to those for conventional distillation columns are observed, while in the equilibration process it is found that the increase of the liquid holdup volume in the condenser reduces the time required to reach steady state for the reactive column and decreases the liquid holdup volume in the reboiler at the equilibrium state. This shows that the liquid holdup volume in the condenser has an important effect on the start-up of reactive distillation columns.
语种	英语 ; 英语
出版者	WILEY-V C H VERLAG GMBH ; WEINHEIM ; PO BOX 10 11 61, D-69451 WEINHEIM, GERMANY
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/17520]
专题	清华大学
推荐引用方式 GB/T 7714	Wu, Hui-xiong,Tang, Zhi-gang,Gao, Hang-bao,et al. Effects of liquid holdup in condensers on the start-up of reactive distillation columns[J],2010, 2010.
APA	Wu, Hui-xiong,Tang, Zhi-gang,Gao, Hang-bao,Hu, Hui,Lu, Xian-chun,&Li, Shi-yu.(2010).Effects of liquid holdup in condensers on the start-up of reactive distillation columns..
MLA	Wu, Hui-xiong,et al."Effects of liquid holdup in condensers on the start-up of reactive distillation columns".(2010).

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