Simultaneous optimization of design and operation of multicomponent batch distillation column - Single and multiple separation duties

被引:47
作者
Mujtaba, IM [1 ]
Macchietto, S [1 ]
机构
[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,CTR PROC SYST ENGN,LONDON SW7 2BY,ENGLAND
关键词
batch distillation; multiple duty; operation structure; task; optimal control;
D O I
10.1016/0959-1524(95)00028-3
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A method is presented for the simultaneous optimization of a batch distillation column design and its operation, for single and multiple separation duties, each involving different multicomponent mixtures and complex operations with intermediate cuts. For operation structures selected a priori, the formulation presented permits the use of general distillation design and cost models. The objective function and constraints include capital and operating cost. In particular, the number of internal plates is optimized along with the most significant operating variables (recoveries in various cuts and reflux ratio profiles and times). The multiple duty formulation presented accounts for the different importance of each duty and setup time between batches. Application of the method to single duty multicomponent separation from the literature shows that significant profit improvements can be achieved within acceptable computing times. For multiple separation duties (two binary mixtures), the method clearly shows the importance of including allocation time to each duty and setup time for each batch in the objective function.
引用
收藏
页码:27 / 36
页数:10
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