Propane/Propylene Mix There are three major sources of pure Propylene for polypropylene feed: Refinery Fluidized Catalytic Cracking (FCC) byproduct, Ethylene Cracking Furnaces as a byproduct of Ethylene production and Propane dehydration; of these three, Refinery FCC byproduct is by far the largest source. Sulfur compounds in the feed to the FCC unit are converted to H 2 S and follow the Propane/Propylene product. Depending on the proces

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