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《中国化学工程学报(英文版)》 2001-01
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Shortcut Procedure for Inverted Batch Distillation Column (I) Multicomponent Ideal System

XU Songlin Hector E. Salomone and Oscar A. IribarrenNational Engineering Research Center for Distillation Technology, Tianjin University, Tianjin 300072, China Institute for Development and Design INGAR, Conicet, 3000 Santa Fe, Argentina  
Inverted batch distillation column(stripper) is opposed to a conventional batch distillation col-umn(rectifier). It has a storage vessel at the top and products leave the column at the bottom. The batch stripper is favourable to separate mixtures with a small amount of light components by removing the heavy components as bottom products. In this paper, we are presenting a shortcut procedure based on our earlier work for design and simulation of the inverted batch distillation column, which is equivalent to the Fenske-Underwood-Gilliland procedure for continuous distillation. Given a separation task, we propose to compute the minimum number of stages(Nbmin) and the minimum reboil ratio(Rbmin) required in a batch stripper,which are the stages and reboil ratio required in a hypothetical inverted batch distillation column operating in total reboil ratio or having an infinite number of stages, respectively. Then, it is shown that the performance of inverted batch columns with a finite number of stages and reboil ratios could be correlated in Gilliland coordinates with the minimum stages Nbmin and the minimum reboil ratio Rbmin.
【CateGory Index】: TQ02
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