Question for assistance: Are partitioned columns used in the stabilizer of catalytic cracking units? How to control the quality of the side-stream product in a partitioned tower?
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During the technical renovation of our plant, the stabilizer was replaced with a tray tower. We have been struggling to understand how to operate this tray tower. A tray tower consists of a main fractionation column and a pre-fractionation column. May I ask what determines the reflux ratio on each side of the trays in a tray tower? How is the naphtha fraction obtained from the side stream on one side of the main distillation column controlled? Our goal is to extract C5 and C6 olefins; meanwhile, the dry point needs to be kept at ≤70 degrees, with C3 and C4 contents at ≤1%. Let’s discuss it together. Thank you!
What type of partitioned tower are you using?