Case Study Petrochemical Plant Troubleshoots Using Plant Digital Twin Built with Aspen Plus ® and Saves $2.4M USD Annually CHALLENGE Toluene separation was disrupted due to an offsite unit shut down, therefore an urgent revamp was needed to employ the local separation unit. SOLUTION To effectively troubleshoot the benzene/ toluene units, Reliance developed a plant digital twin using Aspen Plus BENEFITS • Implemented the final proposed design successfully with minimal capital investment • Enabled better control of product quality with new column configuration that matches Aspen Plus software’s predicted performance • Increased production resulting in savings of $2.4 M USD per year • Completed in-house, avoiding the costs and delay associated with an outside simulation exp

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