ProSimPlus is used in design and in operations for process optimization, unit troubleshooting or debottlenecking, plant revamping, or front-end engineering analysis. Over 70 unit operations are available in the ProSimPlus library, including chemical reactors, three-phases and reactive distillation columns, and multi-fluid heat exchangers. ProSimPlus can model complex systems, such as processes with highly non-ideal mixtures, numerous recycling loops, very large flowsheets and more.