The reactive-extractive distillation (RED) has the advantages of combining beneficial features both reaction and separation processes. Relative to conventional reactive or extractive distillation-based processes, RED is also less energy intensive as it relies on heat produced for subsequent process. Therefore, application ternary azeotropic become subject popular interest, evident by increasing...

We present a catalytic (only ppm/wt) back-to-cyclics chemical recycling strategy. Reactive distillation yields ∼99% of pure mixture cyclics (D 3 /D 4 5 ). Catalyst and repolymerization recycled monomers further silicone circularity.

A current trend in the chemical industries is to intensify processes by integrating reaction and separation operations. The conceptual design of integrated reaction-separation systems constitutes non-convex optimization problems of large scale which can be addressed by engineered mixed-integer non-linear programming (MINLP) techniques. In this presentation, non-standard modeling and solution te...

Background: Ethyl lactate is an environmentally benign solvent, which could substitute petrol-based volatile organic compounds (VOCs) in many applications if production costs are reduced. It usually produced by the esterification of lactic acid with ethanol – two important chemical building blocks biorefineries that available at industrial scale. Reactive distillatio...

To cope up with the strict emission and product quality standards the process industries are stern for the maintenance of the product quality and waste emission. For process industries, online hardware analyzers are costly alternate for analyzing the product quality, they are switching to online soft sensors which are cheap and efficient in use. In this work, soft sensor based on artificial neu...

Design optimization problems in chemical engineering and in many other engineering domains are characterized by the presence of a large number of discrete and continuous decision variables, complex nonlinear models that restrict the search space, nonlinear cost functions, and the presence of many local optima. The classical approach to such problems is the use of MINLP solvers that work on a su...

A detailed study of main stages of a novel no-conventional process to obtain 1,3propanediol (PD) from glycerol (Gly) has been made. Initially the volumetric productivity of Gly fermentation with Klebsiella pneumoniae bacterium was optimized for one and two continuous stages, where was necessary to study the multiplicity of stable steady states for the fermentation system selecting the condition...

Sneesby et al. recently suggested that adding trays in the stripping and rectifying sections of a reacti®e distillation column can degrade performance. This effect, if true, is not only counterintuiti®e, but ®ery disturbing because it suggests that the design of reacti®e distillation columns cannot use conser®ati®e estimates of tray numbers, that is, we cannot simply add excess trays, as in con...

This work presents some representative reactive distillation (RD) models to obtain attainable region for multi-component reaction systems when feed contains significant amount of inerts in it. One can achieve maximum selectivity for a quantitative conversion unlike conventional reactors with semibatch reactive rectification (SRR) as the best RD configuration when the inert is more volatile than...