Effects of limestone calcination on the gasification processes in a BFB coal gasifier
Effects of limestone calcination on the gasification processes in a BFB coal gasifier
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DOI：
10.1016/j.cej.2011.01.102
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发表时间：
2011-04-01
影响因子：
15.1
通讯作者：
Luo, K. H.
中科院分区：
文献类型：
--
作者：
Armstrong, L. M.;Gu, S.;Luo, K. H.
采用欧拉-欧拉计算流体动力学（CFD）模型对煤鼓泡流化床（BFB）气化过程进行了模拟，模型中考虑了挥发分、非均相反应、均相反应和石灰石煅烧过程。该模型考虑了煤，石灰石和焦炭的分离相，并进行了不同的实验条件下，从文献中。排出的气体组成的结果已随时间平均，并与实验数据进行验证。给出了床层内的流体动力学行为以及温度和反应分布。观察了石灰石煅烧对气体组成的影响。(C)2011 Elsevier B. V.保留所有权利。
An Eulerian-Eulerian computational fluid dynamics (CFD) model of the gasification processes in a coal bubbling fluidised bed (BFB) is presented incorporating the devolatilisation, heterogeneous, homogeneous reactions and limestone calcination. The model considers separate phases for the coal, limestone and char and is carried out for different experimental conditions taken from the literature. The results of the exiting gas compositions have been averaged over time and validated with experimental data. The hydrodynamic behaviour as well as temperature and reaction distributions within the bed is presented. The impact of limestone calcination on the gaseous composition is observed. (C) 2011 Elsevier B.V. All rights reserved.