Modeling of the axial distributions of volatile species in a circulating fluidized bed boiler

被引：0

作者：

Ke, Xiwei ^{[1
]}

Engblom, Markus ^{[2
]}

Zhang, Man ^{[1
]}

da Silva, Paulo S.P. ^{[2
]}

Hupa, Leena ^{[2
]}

Lyu, Junfu ^{[1
]}

Yang, Hairui ^{[1
]}

Wei, Guohua ^{[3
]}

机构：

[1] State Key Laboratory of Power Systems, Department of Energy and Power Engineering, Tsinghua University, Beijing,100089, China

[2] Process Chemistry Centre, Åbo Akademi University, Biskopsgatan 8, Turku,20500, Finland

[3] Harbin Boiler Company Limited, Harbin,150000, China

来源：

Chemical Engineering Science | 2021年 / 233卷

基金：

中国国家自然科学基金;

关键词：

Coal combustion - Fluidized beds - Fluidized bed process - Fluidized bed combustion - Fluid dynamics;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The proper understanding and description of the spatial distributions of volatile species is important to the circulating fluidized bed (CFB) reactor design and modeling. Aiming at this issue, a mathematical model has been developed in the present work, which constitutes of two main modules that are validated by experiments, one-dimensional fluid dynamic model and single fuel particle devolatilization model. The simulation of a 135 MWe CFB boiler was conducted. Results show that all volatile species exhibit in general a vertical release profile of bimodal shape (coal inlet area and bottom dense bed) while with quantitative differences, which is mainly attributed to the wide size range of feeding fuel. Compared to the influence of bed temperature, the effect of feeding coal size on the volatile nitrogen release is more obvious. This model can be applied as the devolatilization sub-model for the integral combustion simulation of a CFB boiler. © 2021 Elsevier Ltd

引用

下载

共 50 条

[1] Modeling of the axial distributions of volatile species in a circulating fluidized bed boiler
Ke, Xiwei
Engblom, Markus
Zhang, Man
da Silva, Paulo S. P.
Hupa, Leena
Lyu, Junfu
Yang, Hairui
Wei, Guohua
CHEMICAL ENGINEERING SCIENCE, 2021, 233
[2] Testing and modeling on sulfur retention of circulating fluidized bed boiler
Wang, Qinhui
Luo, Zhongyang
Li, Xuntian
Fang, Mengxiang
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 1999, 19 (02): : 5 - 9
[3] Transients in a circulating fluidized bed boiler
Baskakov A.P.
Munts V.A.
Pavlyuk E.Yu.
Thermal Engineering, 2013, 60 (11) : 775 - 782
[4] Temperature distributions in a finned water wall tube of a circulating fluidized bed boiler
Cheng, Le-Ming
Shi, Zheng-Lun
Luo, Zhong-Yang
Basu, Prabir
Dongli Gongcheng/Power Engineering, 2002, 22 (02):
[5] Computations of a circulating fluidized-bed boiler with wide particle size distributions
Lu, HL
Bie, RS
Liu, WT
Li, BX
Yang, LD
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2000, 39 (09) : 3212 - 3220
[6] Modeling of dynamic properties of the combustion system of a circulating fluidized bed boiler
Ma, SX
Yang, XY
System Simulation and Scientific Computing, Vols 1 and 2, Proceedings, 2005, : 209 - 213
[7] Bottom bed regimes in a circulating fluidized bed boiler
Svensson, A
Johnsson, F
Leckner, B
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 1996, 22 (06) : 1187 - 1204
[8] Circulating fluidized bed boiler control system
Li, Ming
Xu, Xiangdong
Qinghua Daxue Xuebao/Journal of Tsinghua University, 2002, 42 (05): : 665 - 668
[9] Intelligent Optimization of circulating fluidized bed boiler
Chang, Degong
Ju, Yunpeng
INTERNATIONAL CONFERENCE MACHINERY, ELECTRONICS AND CONTROL SIMULATION, 2014, 614 : 580 - 583
[10] Exergy analysis of circulating fluidized bed boiler
Liu, Yanpeng
Zhong, Beijing
Li, Shaohua
PROCEEDINGS OF THE 2015 10TH IEEE CONFERENCE ON INDUSTRIAL ELECTRONICS AND APPLICATIONS, 2015, : 934 - 938

← 1 2 3 4 5 →