Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion

doi:10.1016/S1004-9541(14)60078-1

Chinese Journal of Chemical Engineering ›› 2014, Vol. 22 ›› Issue (5): 531-537.DOI: 10.1016/S1004-9541(14)60078-1

• 催化、动力学与反应工程 • 上一篇下一篇

Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion

王锐, 罗雄麟, 许锋

Research Institute of Automation, China University of Petroleum, Beijing 102249, China

收稿日期:2013-07-18 修回日期:2013-11-08 出版日期:2014-05-28 发布日期:2014-05-06
通讯作者: LUO Xionglin,E-mail: luoxl@cup.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China (21006127) and the National Basic Research Program of China (2012CB720500).

Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion

WANG Rui, LUO Xionglin, XU Feng

Research Institute of Automation, China University of Petroleum, Beijing 102249, China

Received:2013-07-18 Revised:2013-11-08 Online:2014-05-28 Published:2014-05-06
Supported by:
Supported by the National Natural Science Foundation of China (21006127) and the National Basic Research Program of China (2012CB720500).

摘要/Abstract

摘要： With CO combustion promoters, the role of combustion air flow rate for concerns of economics and control is important. The combustion air is conceptually divided to three parts: the air consumed by coke burning, the air consumed by CO combustion and the air unreacted. A mathematical model of a fluid catalytic cracking (FCC) unit, which includes a quantitative correlation of CO heterogeneous combustion and the amount of CO combustion promoters, is introduced to investigate the effects of promoters on the three parts of combustion air. The results show that the air consumed by coke burning is almost linear to combustion air flow rate, while the air consumed by CO combustion promoters tends to saturate as combustion air flow rate increases, indicating that higher air flow rate can only be used as a manipulated variable to control the oxygen content for an economic concern.

关键词: fluid catalytic cracking unit, CO combustion promoters, combustion air partition

Abstract: With CO combustion promoters, the role of combustion air flow rate for concerns of economics and control is important. The combustion air is conceptually divided to three parts: the air consumed by coke burning, the air consumed by CO combustion and the air unreacted. A mathematical model of a fluid catalytic cracking (FCC) unit, which includes a quantitative correlation of CO heterogeneous combustion and the amount of CO combustion promoters, is introduced to investigate the effects of promoters on the three parts of combustion air. The results show that the air consumed by coke burning is almost linear to combustion air flow rate, while the air consumed by CO combustion promoters tends to saturate as combustion air flow rate increases, indicating that higher air flow rate can only be used as a manipulated variable to control the oxygen content for an economic concern.

Key words: fluid catalytic cracking unit, CO combustion promoters, combustion air partition

王锐, 罗雄麟, 许锋. Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion[J]. Chinese Journal of Chemical Engineering, 2014, 22(5): 531-537.

WANG Rui, LUO Xionglin, XU Feng. Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion[J]. Chin.J.Chem.Eng., 2014, 22(5): 531-537.

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Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion

Effect of CO Combustion Promoters on Combustion Air Partition in FCC under Nearly Complete Combustion

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