It begins with first principles and goes to the frontiers of the subject. Each topic is introduced in an elementary and fundamental manner which makes the book suitable for the undergraduate student, the graduate student, and the practicing engineer. This chapter is initiated by presenting the fundamental relationships and techniques needed for making bubble-point and dew-point calculations, and it is concluded by the presentation of techniques for solving 2 variety of special types of problems such as the separation of a multicomponent mixture by a single-stage flash process and the separation of a multicomponent mixture by use of multiple stages at the operating condition of total reflux. In Chaps. Applica- tions of the techniques presented in Chaps.
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Multi-Component Distillation Calculation Thiele-Geddes Method with Theta Convergence The VBA program in the attached spreadsheet performs rigorous tray-by-tray calculations for multi-component distillaton by the Thiele-Geddes method with the theta convergence technique proposed by Holland. The technique involves material balance performed from the top of the column including the condenser to the feed tray and from the reboiler at the bottom to the feed tray. The algorithm involves using iterative techniques to solve a large number of non-linear equations.
The iterative theta convergence and bubble point algorithm are nested inside the plate to plate calculations. This technique is fast for solving these equations and is illustrative of chemical engineering principal, but not as versatile as sparse matrix technique typically employed my large process simulation programs.
It will work best used for solutions that do not deviate too greatly from ideality. The vapor-liquid equilibrium is expressed as a function of temperature with a polynomial relationship, but this can be easily changed in the code. The program numbers stages starting at the top of the column. It allows for either a partial or total condenser. A partial condenser would be counted as the first stage of seperation. References Holland, C. Thiele, E. Geddes, Ind.
Fundamentals of Multicomponent Distillation – Holland
It begins with first principles and goes to the frontiers of the subject. Each topic is introduced in an elementary and fundamental manner which makes the book suitable for the undergraduate student, the graduate student, and the practicing engineer. The subject matter is presented in the order of increasing difficulty and complexity. The gap between the treatment of binary and multicomponent mixtures is closed in Chap.
Fundamentals of multicomponent distillation - C.D.Holland.pdf
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fundamentals of multicomponent distillation