Abstract
Energy management is an important portion of controlling total operating costs for refineries throughout the world. For refinery, the crude distillation unit is one of the largest energy consumption units and also represents one of the most important areas for doing heat integration. The heat exchanger network (HEN) of crude distillation units (CDU) can be retrofitted to reduce the utility consumption. This research used the retrofit potential program, Supachai (2011) to find the optimum point in targeting step and then a mathematical programming model using General Algebraic Modelling System (GAMS) called the stage model, using the mixed integer linear programming (MILP) of Yee and Grossmann (1990) was applied to develop the retrofit model and the simulation software (PROII) was used to validate the design and to perform the total utility consumption. With using the existing exchangers, the retrofit model with the exchanger relocation technique is applied. Example problems of HEN for a crude distillation unit with light, medium and heavy crude oil feeds for a period of 100, 150 and 100 days per year, respectively, were used to demonstrate the retrofitting with the aim of finding the optimal design that would yield the highest net present value (NPV).
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.