Evaluation propylene glycol production

In this part of the study, optimisation of the production is carried out according to a global approach. The reaction step and the successive distillation step are considered simultaneously in the evaluation of the optimal operating conditions. In order to compare these results with the classical approach ones an operating time criterion has been chosen. Thus, the optimisation problem lies in the minimisation of the operating time required for the propylene glycol synthesis. According to the previous optimisations, two kinds of production have been studied a production with yield and purity constraints and a production with an additional by-products constraint. In order to compare the different approaches, the same constraints have been adopted. 

A COMPARATIVE EVALUATION OE DIEEERENT METHODS USED FOR PROPYLENE PRODUCTION TABLE 5.2 Catalytic Hydrogenation of Lactic Acid to Propylene Glycol... 

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