Chemistry

   

Simulation of Distillation Column using DWSIM and ASPEN Plus: A Comparative Study

Authors: Rohan Shorey

In the present study, a distillation process to separate methanol-water was simulated. The work employed NRTL activity coefficients model to describe the vapor-liquid equilibrium of the methanol-water system. The main extractive column took a mixture of methanol and water as feed and separated methanol as distillate and water as the bottoms product. The simulations were performed on DWSIM and ASPEN Plus version 8.6, thus, this is a comparative study with the prime focus to gain an insight of the obstacles faced in simulations carried out on an open source software. The initial work consisted of simulation of the process using shortcut method, so as to obtain basic sizing of the columns based on the purity required and to obtain data to study the variation of reflux ratio with the number of stages and thus, to finalize the actual number of stages required and reflux ratio for rigorous model. Further, rigorous models were employed so as to get more accurate results using the values obtained earlier. A distillate of substantially pure methanol stream with minimal water was obtained using the above model. Finally, a variation of the composition of methanol and water with the stages of distillation column were plotted and also, T-x-y and P-x-y plots were generated.

Comments: 4 Pages, 6 figures, 2 tables, a comparative study

Download: PDF

Submission history

[v1] 2018-10-30 06:58:25

Unique-IP document downloads: 0 times

Vixra.org is a pre-print repository rather than a journal. Articles hosted may not yet have been verified by peer-review and should be treated as preliminary. In particular, anything that appears to include financial or legal advice or proposed medical treatments should be treated with due caution. Vixra.org will not be responsible for any consequences of actions that result from any form of use of any documents on this website.

Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.

comments powered by Disqus