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A two-zone model for fluid catalytic cracking riser with multiple feed injectors.
- Source :
- AIChE Journal; Feb2015, Vol. 61 Issue 2, p610-619, 10p
- Publication Year :
- 2015
-
Abstract
- Developments in modeling of the fluid catalytic cracking (FCC) process have progressed along two lines. One emphasizes composition-based kinetic models based on molecular characterization of feedstocks and reaction products. The other relies on computational fluid dynamics. The aim is to develop an FCC model that strikes a balance between the two approaches. Specifically, we present an FCC riser model consisting of an entrance-zone and a fully developed zone. The former has four overlapping, fan-shaped oil sprays. The model predicts the plant data of Derouin et al. and reveals an inherent two-zone character of the FCC riser. Inside the entrance zone, cracking intensity is highest and changes rapidly, resulting in a steep rise in oil conversion. Outside the entrance zone, cracking intensity is low and varies slowly, leading to a sluggish increase in conversion. The two-zone model provides a computationally efficient modeling approach for FCC online control, optimization, and molecular management. © 2014 American Institute of Chemical Engineers AIChE J, 61: 610-619, 2015 [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00011541
- Volume :
- 61
- Issue :
- 2
- Database :
- Complementary Index
- Journal :
- AIChE Journal
- Publication Type :
- Academic Journal
- Accession number :
- 100437837
- Full Text :
- https://doi.org/10.1002/aic.14665