Improved propane recovery increases refinery profitability

A case study determined that a refinery can potentially recover approximately 1,500 b/d or $2.6 million/year of additional propane in the saturate gas plant.This includes 800 b/d ($1.4 million/year) or 12.3% of incremental propane product by increasing the refinery propane product vapor pressure target and improving the saturate gas plant depropanizer tower control strategy to maximize the vapor pressure and butane content up to their respective specifications.Adjusting the rectified absorber operation allowed the refinery to recover another 700 b/d of incremental propane product.Propane productionAs petroleum refining margins have tightened, refiners have experienced increasing pressure ...

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