An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system

doi:10.1016/j.cjche.2020.10.043

中国化学工程学报 ›› 2021, Vol. 40 ›› Issue (12): 18-26.DOI: 10.1016/j.cjche.2020.10.043

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system

Yangjun Wei, Leming Cheng, Liyao Li

Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

收稿日期:2020-08-01 修回日期:2020-10-23 出版日期:2021-12-28 发布日期:2022-01-14
通讯作者: Leming Cheng,E-mail:lemingc@zju.edu.cn
基金资助:
The authors are grateful for the financial support of the National Key Research and Development Program of China (2018YFB0605403).

An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system

Yangjun Wei, Leming Cheng, Liyao Li

Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China

Received:2020-08-01 Revised:2020-10-23 Online:2021-12-28 Published:2022-01-14
Contact: Leming Cheng,E-mail:lemingc@zju.edu.cn
Supported by:
The authors are grateful for the financial support of the National Key Research and Development Program of China (2018YFB0605403).

摘要/Abstract

摘要： An analysis approach considering gas-solids hydrodynamics, reaction kinetics and reacting species non-uniformity together in a dual-reactor system is presented for better understanding its mass and energy balance. It was achieved by a 3-dimensional comprehensive hydrodynamics and reaction model for the dual-reactor system, which was developed from the successfully verified 3-dimensional comprehensive combustion model for one circulating fluidized bed (CFB) system (Xu and Cheng, 2019). The developed model and analysis approach was successfully used on a 1?MW circulating fluidized bed – bubbling fluidized bed (CFB-BFB) dual-reactor system. Results showed the sensible and chemical energy between two reactors as well as the energy distributions in each reactor were balanced and they agreed well with the experimental measurements. The analysis approach indicated energy balance had a close relationship with the mass transfer in the CFB-BFB dual-reactor system. It may be applied in a design and operation optimization for a dual-reactor system.

关键词: Mass and energy balance, circulating fluidized bed – bubbling fluidized bed, Dual-reactor, Comprehensive model

Abstract: An analysis approach considering gas-solids hydrodynamics, reaction kinetics and reacting species non-uniformity together in a dual-reactor system is presented for better understanding its mass and energy balance. It was achieved by a 3-dimensional comprehensive hydrodynamics and reaction model for the dual-reactor system, which was developed from the successfully verified 3-dimensional comprehensive combustion model for one circulating fluidized bed (CFB) system (Xu and Cheng, 2019). The developed model and analysis approach was successfully used on a 1?MW circulating fluidized bed – bubbling fluidized bed (CFB-BFB) dual-reactor system. Results showed the sensible and chemical energy between two reactors as well as the energy distributions in each reactor were balanced and they agreed well with the experimental measurements. The analysis approach indicated energy balance had a close relationship with the mass transfer in the CFB-BFB dual-reactor system. It may be applied in a design and operation optimization for a dual-reactor system.

Key words: Mass and energy balance, circulating fluidized bed – bubbling fluidized bed, Dual-reactor, Comprehensive model

Yangjun Wei, Leming Cheng, Liyao Li. An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system[J]. 中国化学工程学报, 2021, 40(12): 18-26.

Yangjun Wei, Leming Cheng, Liyao Li. An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system[J]. Chinese Journal of Chemical Engineering, 2021, 40(12): 18-26.

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An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system

An analysis approach of mass and energy balance in a dual-reactor circulating fluidized bed system

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