ENERGY ANALYSIS AND PROCESS OPTIMIZATION OF CDU FOR PRODUCTS REDISTRIBUTION

Abstract

The present study introduces a general methodology based on rigorous simulation and optimization framework that targets both the distillation column and the heat exchanger network to maximize the use of existing equipment. The revamping includes multiple objective functions such as capacity enhancement, energy savings, emissions reduction and profit improvement. An actual CDU Egyptian refining plant has been considered for this study, a simulation model and validation are initiated via case study by ASPEN HYSYS to generate different operating scenarios which are able to optimize the operating conditions according to the products specifications, without any change in equipment design at constant crude feed rate. Also; these models were being subjected to energy analysis to choose the best model in energy saving and reduction CO2 emission. ASPEN ENERGY ANALYZER was applied to create energy analysis for each generated scenario by using pinch analysis, generating composite curve, grand composite curve and utility composite curve.