FIELD DATA, NEW DESIGN CORRECT FAULTY FCC TOWER REVAMP

Scott W. Golden, Gary R. Martin Glitsch Inc. Dallas Karl D. Schmidt Lyondell Petrochemical Co. Houston In 1987, Lyondell Petrochemical Co. revamped a fluid catalytic cracking unit (FCCU) main fractionator by substituting structured packing for trays. But because this revamp did not achieve its design objectives, a second revamp was performed in 1992.

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