Three-dimensional CFD model of the temperature field for a pilot-plant tubular loop polymerization reactor
Three-dimensional CFD model of the temperature field for a pilot-plant tubular loop polymerization reactor
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DOI：
10.1016/j.powtec.2010.06.025
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发表时间：
2010-11
影响因子：
5.2
通讯作者：
Xi Gao;De-Pan Shi;Xizhong Chen;Zheng-hong Luo
中科院分区：
文献类型：
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作者：
Xi Gao;De-Pan Shi;Xizhong Chen;Zheng-hong Luo
采用欧拉-欧拉双流体模型，结合颗粒流动力学理论、能量平衡和传热方程，建立了丙烯聚合环管反应器内稳态液固两相流动的三维计算流体力学（CFD）模型。利用该模型计算了反应器内的整体温度场。预测的压力梯度数据与经典的计算数据吻合得很好。利用该模型研究了循环流速、浆液浓度、固体颗粒粒径和冷却水温度对反应器内温度场的影响。仿真结果表明，整个环路可以分为四个部分。此外，模拟结果还表明，连续搅拌釜式反应器（CSTR）的假设是无效的，在整个领域的环流反应器。
A three-dimensional (3D) computational fluid dynamics (CFD) model, using an Eulerian–Eulerian two-fluid model which incorporates the kinetic theory of granular flow, the energy balance and heat transfer equations, was developed to describe the steady-state liquid–solid two-phase flow in a loop propylene polymerization reactor composing of loop and axial flow pump. The entire temperature field in the reactor was calculated by the model. The predicted pressure gradient data were found to agree well with the classical calculated data. Furthermore, the model was used to investigate the influences of the circulation flow velocity, the slurry concentration, the solid particle size and the cool water temperature on the temperature field in the reactor. The simulation results showed that the whole loop can be divided into four sections. In addition, the simulation results also showed that the continuous stirred-tank reactor (CSTR) assumption is invalid for the entire field in the loop reactor.