Unit Operations
Unit operations are the discrete, physical processing steps — distillation, absorption, extraction, filtration, crystallization, evaporation, drying, heat exchange, and reaction — that chemical and refining engineers assemble into process flowsheets. As a hard skill it requires understanding the governing transport phenomena (mass, heat, and momentum transfer) that size each operation, selecting equipment based on feed characteristics and product specifications, and troubleshooting performance deviations from design. Practitioners apply unit operations knowledge throughout the process life cycle: sizing a distillation column in preliminary design, diagnosing poor separation in an operating refinery, and optimizing energy consumption by improving heat integration across multiple unit operations.
