Many users crash the simulator by turning on the full kinetic reactor immediately. The EHY2102 "Unit O" approach teaches a staged methodology:
The trailing "...Unit O..." is the critical modifier. It forces the engineer to move away from simple "black oil" property generation and focus on convergence. This includes: EHY2102 Aspen HYSYS Petroleum Refining...Unit O...
To get the keyword simulation correct, you must supply the at the reactor outlet. The EHY2102 rule of thumb: Never let the hydrogen partial pressure drop below the reaction threshold for your specific catalyst. Use the Property Table feature in Aspen HYSYS to map the dew point of the recycle gas. Many users crash the simulator by turning on