Minimization of entropy production in distillation

Finite‐Time Thermodynamics and the Optimal Control of Chemical Syntheses

“…By now a large number of thermodynamic processes have been analyzed, e.g. Carnot-cycles [24,29,30], Diesel-cycles [31], Otto-cycles [25], heat exchange [12], diffusion [32], energy conversion [30], phase conversion [33], distillation [8][9][10], heat pumps and refrigerators [34][35][36], thermal insulation [37], solar energy [38], chemical reactions [6,7] and chemical converters [1]. Over the past two decades, this analysis has been performed for engines that use not only classical gases as medium but also Bose-and Fermi-gases [39,40], and has been extended to a large variety of multi-source systems and complicated dissipative systems [41].…”

“…Finite-Time Thermodynamics and the Optimal Control of Chemical Syntheses generated in the interval [0, τ], where we assume that initially only melt was present [n(0) = 0]. This means that we must maximize the integral of the growth rate of the solid phase f(n, T), (8) with respect to the function T(t).…”

“…In contrast, the optimization of chemical processes constitutes one of the major tasks in the field of chemical engineering [1]. Besides the straightforward task of optimizing individual chemical reactions [2][3][4][5][6] or a sequence of reactions [7], the most common examples are the increase in the efficiency of various distillation procedures [8][9][10], the design of chemical plants [11], where complex syntheses take place that include e.g. heat exchanger networks [12] or the recycling of chemicals, and the transformation between different phases of a given substance with a minimal loss of availability [13].…”

Energy and entropy analyses of hydrate dissociation in different scales of hydrate simulator

“…Entropy generation is proportional to the lost work in an irreversible process, and the entropy generation is contribute to explain the optimal conditions for energy losses [36]. The method of entropy generation minimization which means the minimization of energy consumption, has been widely used in the optimal processes of the cogeneration plant [37], the distillation [38], the heat convection in porous media [39], the heat engines [40], and so on. Based on the minimum entropy generation theory, Feng et al [31] has obtained the optimal temperature range for hydrate dissociation in a 5.83 L reactor with the dual horizontal wells.…”

The minimum heat consumption for heat-driven binary separation processes with linear phenomenological heat transfer law

“…Finite time thermodynamics has been a powerful tool for researching the performance of separation processes [12] . Mullins and Berry [13] studied the minimum average entropy production of perfect separation process and imperfect separation processes. The optimal locations of intermediate heat exchangers that reduce entropy production are found.…”