Multifluid Modeling of the Desulfurization Process within a Bubbling Fluidized Bed Coal Gasifier
Multifluid Modeling of the Desulfurization Process within a Bubbling Fluidized Bed Coal Gasifier
复制标题
DOI：
10.1002/aic.13997
复制
发表时间：
2013-06
期刊：
影响因子：
3.7
通讯作者：
L. Armstrong;S. Gu;K. Luo;P. Mahanta
中科院分区：
文献类型：
--
作者：
L. Armstrong;S. Gu;K. Luo;P. Mahanta
介绍了煤鼓泡流化气化炉脱硫过程的二维和三维欧拉-欧拉计算流体力学（CFD）模型。脱硫过程对于减少有害SOx排放非常重要;因此，开发能够预测涉及脱硫的化学反应的CFD模型是优化反应器设计和操作条件的关键。为了模拟该过程，包括一个气相和五个颗粒相。包括脱挥发分、非均相和均相化学反应以及煅烧和脱硫反应。分别对单纯煅烧模型和煅烧加脱硫模型进行了二维和三维模拟，并对反应器出口SO2浓度进行了比较。模拟结果进行评估，对现有的已发表的实验数据。还考虑了流化床对脱硫的影响。© 2013美国化学工程师学会AIChE J，59：1952-1963，2013
The desulfurization process to a two-dimensional (2-D) and three-dimensional (3-D) Eulerian–Eulerian computational fluid dynamic (CFD) model of a coal bubbling fluidized gasifier is introduced. The desulfurization process is important for the reduction of harmful SOx emissions; therefore, the development of a CFD model capable of predicting chemical reactions involving desulfurization is key to the optimization of reactor designs and operating conditions. To model the process, one gaseous phase and five particulate phases are included. Devolatilization, heterogeneous, and homogeneous chemical reactions as well as calcination and desulfurization reactions are incorporated. A calcination-only model and a calcination plus desulfurization model are simulated in 2-D and 3-D and the concentrations of SO2 leaving the reactors are compared. The simulated results are assessed against available published experimental data. The influence of the fluidized bed on the desulfurization is also considered. © 2013 American Institute of Chemical Engineers AIChE J, 59: 1952–1963, 2013