Safe, economical fluid catalytic cracking unit (FCCU) piping design requires skill in flexibility stress analysis and an understanding of the ASME Code regarding stress classification. This paper presents procedures which allow designing FCCU lined pipe to the limit of material with higher design stress values. With these procedures, the usual overdesign can be avoided by taking into consideration the nozzle rotational stiffness due to equipment head flexibility. Even through the reacting forces and moments are apparently high and the differential thermal growths are large between the riser and standpipe, the end results are that piping routing without an expansion joint is still feasible, safe and trouble-free.
Improve FCCU refractory-lined piping design
Hydrocarbon Processing ; 77 , 7
1998
Seiten
Aufsatz (Zeitschrift)
Englisch
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