Computational fluid dynamics (CFD) prediction of mass fraction profiles of gas oil and gasoline in fluid catalytic cracking (FCC) riser
Computational fluid dynamics (CFD) prediction of mass fraction profiles of gas oil and gasoline in fluid catalytic cracking (FCC) riser
复制标题
DOI：
10.1016/j.asej.2012.04.003
复制
发表时间：
2012-12
影响因子：
6
通讯作者：
M. Ahsan
中科院分区：
文献类型：
--
作者：
M. Ahsan
流化催化裂化（FCC）是柴油转化为汽油的重要过程.本文试图从理论上模拟这一现象;使用商业计算流体动力学（CFD）软件和3集总动力学模型。采用CFD软件对催化裂化装置工业提升管的几何形状、边界条件和尺寸进行了二维模拟。采用适用于气固两相流动的连续性方程、动量方程、能量方程和组分输运方程，有效地模拟了这一物理现象。本文采用考虑k-ε湍流和组分输运的颗粒欧拉多相模型。通过预测柴油、汽油、轻气和焦炭的质量分数分布，解决了时间精确的瞬态问题。输出曲线显示了两相的质量分数和温度分布。最后还将计算结果与文献中可用的其他计算和实验数据进行了比较。
Fluid catalytic cracking (FCC) is an important process for the conversion of gas oil to gasoline. The paper is an attempt to model the phenomenon theoretically; using commercial computational fluid dynamics (CFD) software and 3-lump kinetic model. Geometry, boundary conditions and dimensions of industrial riser for catalytic cracking unit is conferred for 2D simulation using commercial CFD code. Continuity, momentum, energy and species transport equations, applicable to two phase solid and gas flow, are used to simulate the physical phenomenon efficiently. This paper uses the granular Eulerian multiphase model withk–εturbulence and species transport. Time accurate transient problem is solved with the prediction of mass fraction profiles of gas oil, gasoline, light gas and coke. The output curves demonstrate the mass fraction and distribution of temperature in both phases. At the end comparison of the computational results with other computational and experimental data available in literature is also given.