Successful column revamps require careful design

Reliable distillation-column revamps in refineries require careful attention to design. Seemingly subtle mistakes can have unfortunate implications.Several refining case studies illustrate the consequences of improper process or hydraulic design, inadequate knowledge of the process unit, poor drawing reviews or procedures, and erroneous inspections. Curtailed production and unscheduled maintenance are costly, both in resources and lost opportunity.Debottlenecking of columns for higher throughput or efficiency leaves little room for errors, since equipment is pushed to its limits.Process designThe importance of sound process design cannot be overemphasized. Some aspects of process design t...

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