Investigation of Distillation Processes Using the Attainable Region Method
The Attainable Region (AR) approach is based on geometric principles and aims to find the set of all attainable outcomes for a particular system. It has previously been applied to reactor systems but the method is also applicable to other processes such as distillation. In this paper we define the Attainable Region for a distillation column section as the set of all possible outputs (and corresponding inputs) for a given distillate composition and VLE thermodynamic model. The fundamental processes considered are VLE based separation and mixing. For an ideal binary distillation system, we consider the variables of the AR to be composition and a costing variable that we call |ê (Jobson et al. 4 ). |ê is derived from the mathematical description of the column and is similar to residence time in a process involving reaction. The |ê variable is related to costs. We develop the AR method for distillation and demonstrate it by looking at a rectifying section. We will show that there are opportunities for reducing |ê by mixing and thus that the traditional type of rectifying section used is not optimal.
Attainable Region Binary distillation costing variables Optimization
Mbuyu G.Ntunka Shehzaad Kauchali Diane Hildebrandt David Glasser
Centre of Material and Process Synthesis, School of Chemical and Metallurgical Engineering, Unive rsity of the Witwatersrand, Private Bag X3, Wits 2050, South Africa.
国际会议
The 5th International Conference on Separation Science and Technology(第五届国际分离科学与技术会议)
北京
英文
2007-10-14（万方平台首次上网日期，不代表论文的发表时间）