Distillation sequence retrofit

If the existing shells differ significantly from what is required in the retrofitted sequence, then, in addition to reconfiguring the distillation sequence, the existing shells can also be modified. For example, the number... 

The retrofit of more complex distillation sequences can also be considered. Within a larger, more complex sequence, any pair of columns that are together in a sequence can be considered as candidates for the same retrofit modifications as those discussed for two-column retrofit. 

In the retrofit design of a process, we must couple the decision making about function with the reuse of existing equipment. In an example involving the redesign of a distillation sequence to handle 30% more feed, this cou-... 

In the DPC-production step, at least two reactive distillation columns combined with each other must be used (Fukuoka et al, 2003). High production rate and selectivity are obtained using this distillation sequence. A vacuum SSC was proposed to remove the light and heavy components to obtain high-purity DPC with 99.95% wt. yield. A further retrofit... 

Long, N.V.D. and Lee, M. (2013c) Debottlenecking the retrofitted thermally coupled distillation sequence. Industrial Engineering Chemistry Research, 52,12635-12645. 

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