Entropy production minimization in a multicomponent diabatic distillation column

Multicomponent batch distillation column design

Integrated Column Designs for Minimum Energy and Entropy Requirements in Multicomponent Distillation

Minimum Energy and Entropy Requirements in Multicomponent Distillation

We present new analytical expressions for minimum energy consumption (1 law) and minimum entropy production, or lost work (2 law), in complex distillation arrangements. These simple, but exact, expressions apply to ideal mixtures and an infinite number of stages, and the relative volatility is the only required component property. The simple Vmin-diagram is shown to be very useful in evaluating...

Notes on Entropy Production in Multicomponent Fluids

We calculate the entropy production in a multicomponent fluid, allowing for chemical reactions and external forces that are species specific. Equations for balance of the mass of each species, energy, momentum, and entropy production are first formulated as integral equations for an arbitrary volume V with external area A and then reduced to differential equations. The treatment is rather stand...

Minimum Energy Consumption in Multicomponent Distillation. 1. Vmin Diagram for a Two-Product Column

The Vmin diagram is introduced to effectively visualize how the minimum energy consumption is related to the feed-component distribution for all possible operating points in a two-product distillation column with a multicomponent feed. The classical Underwood equations are used to derive analytical expressions for the ideal case with constant relative volatility and constant molar flows. Howeve...