Modeling and Control Design for Distillation Columns Based on the Equilibrium Theory

A Survey for the Selection of Control Structure for Distillation Columns Based on Steady State Controllability Indexes

Optimal Design Methodology for Azeotropic Distillation Columns

We develop a short and optimal design methodology for multicomponent mixtures, based on the concept of minimum difference in composition. The minimum reflux ratio is calculated through an analytical procedure, which allowing their use in multicomponent mixtures. The procedure also includes a simple criterion to optimize the structural design of the column, without increasing energy consumption....

Analysis and Control of Distillation Columns

Here MI is the total holdup inside the column, and MD and MB are the condenser and reboiler holdups. S = yD(1 xB) (1 yD)xB is the separation factor and Is = DyD(1 yD) + BxB(1 xB) is the \impurity sum". Note that Is may be extremely small for columns with both products of high purity (1 yD and xB both small) resulting in very large linearized values of 1. The response to changes in the internal ...

developing a pattern based on speech acts and language functions for developing materials for the course “ the study of islamic texts translation”

هدف پژوهش حاضر ارائه ی الگویی بر اساس کنش گفتار و کارکرد زبان برای تدوین مطالب درس "بررسی آثار ترجمه شده ی اسلامی" می باشد. در الگوی جدید، جهت تدوین مطالب بهتر و جذاب تر، بر خلاف کتاب-های موجود، از مدل های سطوح گفتارِ آستین (1962)، گروه بندی عملکردهای گفتارِ سرل (1976) و کارکرد زبانیِ هالیدی (1978) بهره جسته شده است. برای این منظور، 57 آیه ی شریفه، به صورت تصادفی از بخش-های مختلف قرآن انتخاب گردید...

Shortcut Design of Extractive Distillation Columns

Extractive distillation is a common process for the separation of homogeneous azeotropic mixtures. In this process entrainer feed flowrate and reflux ratio of the extractive column represent the crucial design degrees of freedom which govern feasibility and operating cost. In this work feasibility and operational stability of the extractive column is related to the analysis of the nonlinear dyn...