[1]王小芳,金保升,钟文琪.基于欧拉多相流模型的流化床煤气化过程三维数值模拟[J].东南大学学报(自然科学版),2008,38(3):454-460.[doi:10.3969/j.issn.1001-0505.2008.03.018]
 Wang Xiaofang,Jin Baosheng,Zhong Wenqi.3D numerical simulation on coal gasification in fluidized bed based on Eulerian multiphase fluid model[J].Journal of Southeast University (Natural Science Edition),2008,38(3):454-460.[doi:10.3969/j.issn.1001-0505.2008.03.018]
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基于欧拉多相流模型的流化床煤气化过程三维数值模拟()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第3期
页码:
454-460
栏目:
材料科学与工程
出版日期:
2008-05-20

文章信息/Info

Title:
3D numerical simulation on coal gasification in fluidized bed based on Eulerian multiphase fluid model
作者:
王小芳 金保升 钟文琪
东南大学能源与环境学院, 南京 210096
Author(s):
Wang Xiaofang Jin Baosheng Zhong Wenqi
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
流化床煤气化 欧拉模型 颗粒动理学理论 3D数值模拟
Keywords:
fluidized bed coal gasification Eulerian model kinetic theory of granular flow 3D numerical simulation
分类号:
TF538
DOI:
10.3969/j.issn.1001-0505.2008.03.018
摘要:
以欧拉多相流模型为基础,气相采用k-ε湍流模型,固相采用基于颗粒动理学理论封闭模型,引入传热、传质、煤热解、气化过程反应模型,建立了流化床煤气化过程的三维数理模型,该模型同时考虑了稠密气固流动和相内、相间的化学反应.对直径0.22 m的流化床煤气化炉不同操作参数下的气化过程进行了三维数值模拟,获得了气化炉内气化产物的组分分布、温度分布及化学反应速率变化规律.模型的计算结果与实验结果进行了比较,结果表明:数值模拟与实验吻合较好,最小相对误差仅为1%左右,最大相对误差为20%左右,平均相对误差小于14%.
Abstract:
Based on the Eulerian multiphase fluid model, 3D numerical models were established to simulate the coal gasification in fluidized bed. The gas phase was modeled with k-ε turbulent model and the particle phase was modeled with kinetic theory of granular flow. Submodels including heat transfer model, transfer model, species transport model and chemical reaction model were added to consider the dense gas-solid flow and chemical reactions in fluidized bed coal gasifier. Coal gasifications in a fluidized bed coal gasifier with diameter of 0.22 m were simulated. Composition profiles of gas product, temperature distribution of gas phase and chemical reaction rates under different operating conditions were obtained. Simulated results were compared with experimental values. The results show that numerical simulations are in well agreement with the experiments. The minimum relative error of simulation to the experiment is only 1%, the maximum relative error is about 20% and the mean relative error is less than 14%.

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备注/Memo

备注/Memo:
作者简介: 王小芳(1982—),女,博士生; 金保升(联系人),男,教授,博士生导师,bsjin2007@seu.edu.cn.
基金项目: 国家高技术研究发展计划(863计划)资助项目(2006AA05A103).
引文格式: 王小芳,金保升,钟文琪.基于欧拉多相流模型的流化床煤气化过程三维数值模拟[J].东南大学学报:自然科学版,2008,38(3):454-460.
更新日期/Last Update: 2008-05-20