Simulation and optimisation of extractive distillation with water as solvent

Extractive Distillation Process Optimisation of the 1.0-1a Class System, Acetone - methanol with Water

“…For the extractive distillation process both the extractive column and the entrainer regeneration column should be included and connected with the solvent recycle stream. For finding optimal parameters for the acetone -methanol separation with water, some authors have run a sensitivity analysis over the process variables, namely the reflux ratio, the entrainer-feed flow rate ratio, the number of trays in each of the rectifying, extractive, stripping column sections and the distillate flow rate (Hilal et al, 2002, Langston et al, 2005, Lyuben, 2008, Gil et al, 2009. However, the procedure is tedious and may fail to find the best solution.…”

Separating an azeotropic mixture of toluene and ethanol via heat integration pressure swing distillation

“…A higher boiling solvent (or entrainer) needs to be added into the binary mixture to increase the relative volatility of the original components (Langston et al, 2005;Munoz et al, 2006;Orchillés et al, 2009). In general, the azeotropic mixture and the solvent are fed to the first extraction column together, with the light key component obtained at the top of the column and the less volatile components including the extractant and heavy key components collected at the bottom.…”

Economic feasibility of heat pumps in distillation to reduce energy use

“…In this work, see also [26], C f was assumed to 10% of FC, and i r + i m was assumed to be 25% of FC; hence equation (3) can be rewritten:…”