Heterogeneous reaction model for FCC riser units

被引：26
作者：
Martignoni, W
de Lasa, HI [1 ]
机构：
[1] Univ Western Ontario, CREC, London, ON N6A 5B9, Canada
[2] Petrobras Six, Sao Pateus Sul, PR, Brazil
来源：
CHEMICAL ENGINEERING SCIENCE | 2001年 / 56卷 / 02期
关键词：
D O I：
10.1016/S0009-2509(00)00266-9
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A mathematical model is considered to describe the importance of the adsorption of hydrocarbon species in FCC risers. Results show that both the hydrodynamics and the reaction kinetics are strongly influenced by adsorption phenomena. Vapor exit velocities based on pseudo-homogeneous models (no adsorption included) are significantly larger, about 2 times, than gas velocities calculated with the heterogeneous model (adsorption included). The proposed heterogeneous reaction model also predicts increases in catalyst and vapor residence times and consequently higher gas oil conversions. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：605 / 612
页数：8
相关论文
共 15 条
[1]   HYDRODYNAMICS OF GAS-SOLID FLOW IN A CATALYTIC CRACKER RISER - IMPLICATIONS FOR REACTOR SELECTIVITY PERFORMANCE [J].
BERKER, A ;
TULIG, TJ .
CHEMICAL ENGINEERING SCIENCE, 1986, 41 (04) :821-827
[2]   FCC riser unit operated in the heat-transfer mode: Kinetic modeling [J].
Blasetti, A ;
deLasa, H .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1997, 36 (08) :3223-3229
[3]   EXPERIMENTAL STUDIES ON THE DYNAMICS AND EVAPORATION OF TANDEM LIQUID DROPLETS IN A HOT GAS-FLOW [J].
CHOI, KJ ;
LEE, HJ .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1992, 35 (11) :2921-2929
[4]   PILOT-PLANT FOR THE FLUID CATALYTIC CRACKING PROCESS - DETERMINATION OF THE KINETIC-PARAMETERS OF DEACTIVATION OF THE CATALYST [J].
CORELLA, J ;
FERNANDEZ, A ;
VIDAL, JM .
INDUSTRIAL & ENGINEERING CHEMISTRY PRODUCT RESEARCH AND DEVELOPMENT, 1986, 25 (04) :554-562
[5]  
de Lasa H., 1992, U.S. Patent, Patent No. [5102628, 5,102,628]
[6]   CATALYTIC CRACKING WITH FCCT LOADED WITH TIN METAL TRAPS - ADSORPTION CONSTANTS FOR GAS OIL, GASOLINE, AND LIGHT GASES [J].
FARAG, H ;
BLASETTI, A ;
DELASA, H .
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1994, 33 (12) :3131-3140
[7]  
MARTIGNONI W, 1999, P 6 C CIRC FLUID BED, P513
[8]  
MARTIGNONI W, 1998, THESIS U WE ONTARIO
[9]   GAS AND SOLID BEHAVIOR IN CRACKING CIRCULATING FLUIDIZED-BEDS [J].
MARTIN, MP ;
TURLIER, P ;
BERNARD, R ;
WILD, G .
POWDER TECHNOLOGY, 1992, 70 (03) :249-258
[10]   CATALYTIC CRACKING IN RISER REACTORS - CORE-ANNULUS AND ELBOW EFFECTS [J].
MARTIN, MP ;
DEROUIN, C ;
TURLIER, P ;
FORISSIER, M ;
WILD, G ;
BERNARD, JR .
CHEMICAL ENGINEERING SCIENCE, 1992, 47 (9-11) :2319-2324
12