Case Study Energy Company Saves $6M USD with a Performance Engineering Digital TwinCHALLENGE Frequent amine unit failures at a gas plant in South America were affecting gas sales volumes. Though engineers ruled out mechanical problems, they struggled to find the root cause of the problem. SOLUTION Using Aspen Exchanger Design & RatingTM to simulate the reboiler circuit and regenerating column and Aspen HYSYS® to model column hydraulics revealed hydraulic instability in the thermosiphon system for the entire range of operating conditions, from minimum flow to maximum capacity. The model showed engineers they could correct the problem by modifying the thermosiphon piping circuit. BENEFITS Troubleshooting and correcting the hydraulic instability improves operations so the co

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