Process engineering software for separation vessels MySep is computer software for the design, evaluation and simulation of separators and scrubbers. MySep enables the user to effectively determine vessel sizes, select internals and assess the associated overall performance of each vessel. Furthermore, MySep can also be used to evaluate an existing design and determine its theoretical performance based on actual operating data. MySep can be used independently, and in conjunction with process modelling tools used to simulate entire flow schemes, such as Aspen HYSYS, KBC Petro-SIM, Honeywell UniSim Design, SLB Symmetry and AVEVA PRO/II. With the output from these process simulations, each vessel can be designed or simulated in detail and the separator performance results can be returned directly to the process simulator. MySep Engine embeds in steady-state and dynamic process simulations to add rigorous gas-liquid separation modelling