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Multivessel batch distillation
Author(s) -
Skogestad Sigurd,
Wittgens Bernd,
Litto Rajab,
Sørensen Eva
Publication year - 1997
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690430412
Subject(s) - reboiler , batch distillation , condenser (optics) , column (typography) , distillation , fractionating column , fractional distillation , process engineering , chromatography , continuous distillation , flow (mathematics) , control theory (sociology) , chemistry , computer science , mathematics , control (management) , engineering , physics , geometry , artificial intelligence , light source , connection (principal bundle) , optics
The multivessel batch column consists of a reboiler, several column sections, intermediate vessels and a condenser vessel. This configuration provides a generalization of previously proposed batch‐distillation schemes, including the inverted column and the middle‐vessel column. The total reflux operation of the multivessel batch‐distillation column was presented recently, and the main contribution of this article is to propose a simple feedback control strategy for its operation. We propose to adjust the vessel holdups indirectly by manipulating the reflux flow out of each vessel to control the temperature at some location in the column section below. The feasibility of this strategy is demonstrated by simulations.