Assumptions: Unit O is a three-product fractionator (light, mid, heavy) receiving a heated reactor effluent. Pressure is moderate (5–15 bar), temperature range across the column 40–350°C.
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Set up feed stream(s)
Preconditioning: heat/exchanger duties & pumps EHY2102 Aspen HYSYS Petroleum Refining...Unit O...
Column specification (RadFrac)
Convergence and initialization
Integrate with upstream reactors
Heat integration and utilities
Controls and specifications
Validation checks
Many users crash the simulator by turning on the full kinetic reactor immediately. The EHY2102 "Unit O" approach teaches a staged methodology:
Never start with all spec targets active. Instead:
Please wait... it will take a second!