Design and Analysis of Chemical Processes through Dynamic Simulation

초록

This study introduces an approach to design flare network system that ensures economic feasibility and safety using dynamic modeling. 'Separator outlet blocked discharge' was selected as the main pressure relief scenario based on the American Petroleum Institute (API) Standard 521, and design data of the plant provided from an offshore project. The effect of process operating variables such as pressure, temperature and liquid level changes in a vessel on the opening of pressure safety valves (PSV) were considered through dynamic and steady-state modelings. For example, the flare loads, PSV back pressure, and Mach number of the flare network system were estimated from both dynamic and steady-state modeling, and the results were compared each other. Lastly, the optimizations of flare header and sub-header sizes and a configuration of the flare network system were conducted using dynamic simulation, satisfying line size criteria based on the API standard. In this way, we were able to achieve safer design of the flare network system with reduced capital cost.

키워드