A new generic reaction for modeling fluid catalytic cracking risers

doi:10.1016/j.cjche.2017.01.006

›› 2017, Vol. 25 ›› Issue (10): 1449-1460.DOI: 10.1016/j.cjche.2017.01.006

• Catalysis, Kinetics and Reaction Engineering • 上一篇下一篇

A new generic reaction for modeling fluid catalytic cracking risers

Yong Li, Jizheng Chu, Jiarui Zhang

College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:2016-10-29 修回日期:2017-01-13 出版日期:2017-10-28 发布日期:2017-01-28
通讯作者: Jizheng Chu,E-mail address:chujz@mail.buct.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21676012), the Fundamental Research Funds for the Central Universities (Project YS1404), and the National High Technology Research and Development Program of China (2007AA04Z191).

A new generic reaction for modeling fluid catalytic cracking risers

Yong Li, Jizheng Chu, Jiarui Zhang

College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China

Received:2016-10-29 Revised:2017-01-13 Online:2017-10-28 Published:2017-01-28
Supported by:
Supported by the National Natural Science Foundation of China (21676012), the Fundamental Research Funds for the Central Universities (Project YS1404), and the National High Technology Research and Development Program of China (2007AA04Z191).

摘要/Abstract

摘要： A new generic reaction in the form of PC_i → PC_m +[i,m] → PC_m + λ_i,m coke + surplusage has been proposed for describing the catalytic cracking behavior of petroleum narrow cuts or pseudo-components (PCs), where the rate constant formula is derived from the transition state theory and the coking amount is correlated to the properties of the intermediate substance[i,m]. In composing the cracking reaction network for feedstock and product oils, only the product PC_m of the proposed generic reaction is used, which together with a criterion for excluding exothermic reactions, distinctly reduces the number of reactions in the network. With the proposed cracking reaction scheme coupled with special pseudo-components, a predictive one-dimensional steady state model for fluid catalytic cracking risers is formulated in the sense that for a given riser and given catalyst, the model parameters are independent of stock oils, product schemes and other operational conditions. The great correlating and predicting capability of the resulted model is tested with production data in different scenarios of four commercial risers.

关键词: Fluid catalytic cracking riser, Kinetic modeling, Pseudo-component, Petroleum, Steady state model, Parameter estimation

Abstract: A new generic reaction in the form of PC_i → PC_m +[i,m] → PC_m + λ_i,m coke + surplusage has been proposed for describing the catalytic cracking behavior of petroleum narrow cuts or pseudo-components (PCs), where the rate constant formula is derived from the transition state theory and the coking amount is correlated to the properties of the intermediate substance[i,m]. In composing the cracking reaction network for feedstock and product oils, only the product PC_m of the proposed generic reaction is used, which together with a criterion for excluding exothermic reactions, distinctly reduces the number of reactions in the network. With the proposed cracking reaction scheme coupled with special pseudo-components, a predictive one-dimensional steady state model for fluid catalytic cracking risers is formulated in the sense that for a given riser and given catalyst, the model parameters are independent of stock oils, product schemes and other operational conditions. The great correlating and predicting capability of the resulted model is tested with production data in different scenarios of four commercial risers.

Key words: Fluid catalytic cracking riser, Kinetic modeling, Pseudo-component, Petroleum, Steady state model, Parameter estimation

Yong Li, Jizheng Chu, Jiarui Zhang. A new generic reaction for modeling fluid catalytic cracking risers[J]. , 2017, 25(10): 1449-1460.

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A new generic reaction for modeling fluid catalytic cracking risers

A new generic reaction for modeling fluid catalytic cracking risers

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