管壳型固定床费托合成反应器的数学模拟  

Mathematic Simulation of a Tube-Shell Type Fixed-Bed Reactor for Fischer-Tropsch Synthesis

作　　者：鲁丰乐[1] 张海涛[1] 应卫勇[1] 房鼎业[1] 

机构地区：[1]华东理工大学化学工程联合国家重点实验室,大型工业反应器工程教育部工程研究中心,上海200237

出　　处：《华东理工大学学报（自然科学版）》2010年第5期603-609,共7页Journal of East China University of Science and Technology

基　　金：国家高技术研究发展计划(863计划)项目(2006AA05A111)

摘　　要：根据集总思想,利用蛋壳型钴基催化剂动力学方程,建立了管壳型固定床费托合成反应器的一维拟均相数学模型。对合成油试验装置进行工况模拟,得到的管壳型固定床反应器催化床层中的温度分布、CO转化率、出口组成、C5+的质量分数和时空产率的模型计算值与试验值吻合良好。讨论了反应器进口温度、操作压力、气体体积空速和沸腾水温度对反应结果的影响,结果表明:提高反应器进口温度、沸腾水温度、操作压力使催化床层温度升高,CO转化率升高,C5+的质量分数降低和C5+的时空收率增大;增大气体体积空速使催化床层温度降低,CO转化率降低,C5+的质量分数升高和C5+的时空收率增大。Based on the lumping theory and the kinetics model of the eggshell Cobalt-based catalyst,the one dimensional pseudo-homogeneous model of the tube-shell type fixed-bed reactor for Fischer-Tropsch synthesis was developed.The simulated operating parameters including the profiles of the catlyst-bed temperature,CO conversion,outlet composition,mass fraction of C~＋_5 and the space time yield were consistent well with the practical data.Effects of the reactor inlet temperature,space velocity,operating pressure and the boiling water temperature on the reaction results were studied.It demonstrated that the increase of the inlet temperature,operating pressure and the boiling water temperature enhanced the catalyst-bed temperature,CO conversion and the space time yield of C~＋_5 while decreased the mass fraction of C~＋_5.The increase of space velocity resulted in the decrease of the catalyst-bed temperature and CO conversion as well as the increase of the mass fraction and space time yield of C~＋_5.

关 键 词：费托合成 管壳型固定床反应器 数学模型 工况模拟 

分 类 号：TQ018[化学工程]