Heat Integrating Fluid Catalytic Cracking Unit Fractionator Systems

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REVAMPING FCC UNIT MAIN FRACTIONATORS


Scott W. Golden
Process Consulting Services Incorporated*
3400 Bissonnet
Suite 260
Houston, Texas 77005

Andrew W. Sloley
The Distillation Group, Inc.*
P.O. Box 10105
College Station, Texas 77842-0105

Brad Fleming
Jaeger Products, Inc.*
4035 Schilling Way
Dallas, Texas 75237

Stefano Constanzo
Glitsch, Inc.
P.O. Box 660053
Dallas, Texas 75266-0053

Published in
Hydrocarbon Technology International
1994

Abstract copyright Andrew W. Sloley
1997

The main fractionator heat integration with a gas plant can supply the incremental energy required to meet improved olefins requirements and improve the thermal efficiency of the unit. Understanding the fractionator energy recovery limitations, possible pumparound draw temperature options, and various temperature levels of the heat sinks is important when optimizing. On a "typical" 8000m3/day FCC main fractionator the recoverable energy from the overhead system is 11.2MMkal/hr. On older units this may be much higher, and including product recoverable heat losses this may be 50 per cent higher. The main fractionator LCO and gasoline product recoveries can be improved by the heat balance adjustments associated with optimization. The main fractionator vapor loadings are more than 20 per cent higher in the optimized design.

7 pages.
Electronic version available in Adobe PDF format file 009.PDF 435k.

Request paper 009.

*Current affiliation

This page updated 14 September, 1999.
© 1999 The Distillation Group, Inc. All rights reserved.