At the Paris climate conference (COP21) in December 2015, 195 countries including South Korea adopted the first-ever universal binding global climate deal that will be entered into force in 2020. As a result, Korean industries need to maximize energy efficiency and find alternative renewable energy resources. As one of the solutions for this government policy, CEPI Lab. has been working on the research area of process modeling and optimization to reduce overall energy consumption. The details of research are (1) heat exchanger network optimization using pinch technology, (2) steam system modeling and optimization, (3) overall utility system (inc. electric power, steam, fuel, and cooling water) modeling and real time optimization, (4) hydrogen pinch technology, (5) heat exchanger fouling monitoring and scheduling, (6) reactive distillation, (7) divided wall column, (8) exergy analysis of distillation column, etc.
[그림 3] Modeling and Optimization of Refinery Steam System
In recent years, higher accuracy and efficiency for the design of off-shore platform is required especially under the circumstance of low oil price. Therefore, an innovative approach is required for the design of off-shore platform rather than following conventional method. One of the solutions is to integrate the sub-sea and topside processes from the stage of conceptual design. For this, CEPI Lab. has been collaborating with other research centers to develop topside processes of oil and gas wells individually, and develop detail designs including PFD (Process Flow Diagram) and P&IDs (Piping and Instrumentation Diagram). Then, we integrate the topside processes with the sub-sea system that is developed separately by SNU (Seoul National University), and analyze the dynamic performance of the topside based on various transition scenarios such as change of feed composition during the well life cycle, emergency shut-down, etc. The analysis results will be incorporated into the design of topside platform so that higher accuracy and efficiency of the design will be achieved in the end. Beyond the integration of two individual system, economic analysis of various types of hybrid acid gas removal systems (including membrane and absorption system), modeling of MEG (Methyl Ethylene Glycol) regeneration system, automatic design of utility system will be considered during the project period.
[Figure 4] Summary of project for the integration of sub-sea and topside systems