Correlations for predicting the effect of feedstock properties on catalytic cracking kinetic parameters

被引:25
作者
Ancheyta, J
López-Isunza, F
Aguilar-Rodríguez, E
机构
[1] Inst Mexicano Petr, Mexico City 07730, DF, Mexico
[2] Inst Politecn Nacl, ESIQIE, Mexico City 07738, DF, Mexico
[3] Univ Autonoma Metropolitana Iztapalapa, Mexico City 09340, DF, Mexico
关键词
D O I
10.1021/ie980138e
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The rate and the catalyst decay constants used in the three-lump kinetic model proposed by Weekman (Ind. Eng. Chem. Prod. Res. Dev. 1968, 7, 90-95) for the catalytic cracking reactions were correlated as a function of the total sulfur and nitrogen contents and carbon distribution evaluated by the n-d-M method (ASTM D-3238-82 Method, 1982) using information reported in the literature about the cracking of 16 different feedstocks. The correlations developed in this work are more accurate than those previously reported. Catalytic cracking in a microactivity reactor of six gas oils was used to determine the effect of feedstock properties on FCC product selectivities. It was found that the sulfur content has a strong influence on-kinetic constants and the effect of nitrogen is lower. Good predictions of gasoline yields were obtained from the kinetic model, with an average absolute deviation of less than 1.5% with respect to experimental data.
引用
收藏
页码:4637 / 4640
页数:4
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