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Distillation Theory and Its Application to Optimal Design of by F. B. Petlyuk

By F. B. Petlyuk

Writing for designers and operators of separation devices within the chemical, pharmaceutical, nutrients, and comparable industries in addition to software program designers, F.B. Petlyuk provides a transparent, multidimensional geometric illustration of distillation idea legitimate for every type of distillation column varieties, splits, and combos. DistillDesigner software program permits refinement and affirmation of the algorithms of optimum layout. equipment of the final geometric concept of distillation, encoded in DistillDesigner, offer speedy and trustworthy ideas to difficulties of flowsheet synthesis and to optimum layout calculations.

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Yn ) is a coefficient of phase equilibrium. Hj = ϕ(T, P, y1 . . yn ) and h j = ψ(T, x1 . . xn ) are the enthalpies of vapor and liquid, respectively. At first sight, the system of Eqs. 4) appears to be rather simple, but it is necessary to bear in mind that the equation of phase equilibrium [Eq. 3)] together with the equations of summation [Eq. 4)] are always nonlinear, even in the case of the so-called ideal mixtures, with αi h = Ki /Kh = const (the component relative volatilities are not influenced by temperature and composition).

1901). Dampfdrucke ternarer Gemische. J. Phys. ). Serafimov, L. A. (1969). The Azeotropic Rule and the Classification of Multicomponent Mixtures. 4. N-Component Mixtures. J. Phys. ). Walas, S. M. (1985). Phase Equilibria in Chemical Engineering. Boston: Butterworth. Zharov, V. T. (1967). Free Evaporation of Homogeneous Multicomponent Solutions. J. Phys. ). Zharov, V. T. (1968a). Free Evaporation of Homogeneous Multicomponent. Solutions. 2. Four-Component Systems. J. Phys. ). Zharov, V. T. (1968b).

6b, R6 = ∞, R6 > R5 > R4 > R3 ). We have come to an important result: the product compositions under infinite reflux and under a significantly large finite reflux (the third class of fractionation) are identical. 8. A location of zones of constant concentration (pinches) in columns for distillation of three-component mixtures under minimum 1 1 2 reflux: (a) R < Rlim (first class of fractionation), (b) Rlim < R < Rlim 2 (second class of fractionation), (c) R > Rlim (third class of fractionation); pinches are shaded.

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