Control-system improvements expand refinery processes

Despite their often secondary consideration, process-control improvements can generate substantial benefits with little or no investment.Four examples from Koch Petroleum Group refineries show how poor process control significant affected plant profitability: two gas plant examples, one hydrotreater fractionator example, and one deisobutanizer example.These cases do not represent an exhaustive list of potential opportunities. Nearly every refinery or chemical plant has similar circumstances waiting to be discovered. Sometimes poor control goes unnoticed because changing an operating procedure that has been practiced as long as any operator can remember is difficult.Evaluating a unit's...

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