悬浮床加氢反应器壁面的结焦预测

摘要

以1个空桶结构的悬浮床加氢反应器为研究对象，首先采用计算流体力学模拟软件来模拟其内部流动场，然后通过MATLAB中的BP神经网络模型以及数据拟合软件对实验数据进行拟合，得到结焦率与反应条件之间的关系式。最后将得到的关系式作为变量插入到计算流体力学后处理软件中进行分析，观察各个壁面处的coke值分布图，并结合内部速度场分布判断易结焦位置。结果表明，在此模型中易结焦位置集中在反应器底部中间位置、分配盘上表面中心区域以及分配盘与反应器主体壁面的连接处。

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	张晓
	姜斌
	肖晓明

关键词：悬浮床反应器 BP神经网络结焦率

Abstract：

Choosing a suspended bed hydrogenation reactor with a simple structure as an object, the computational fluid dynamics software was used to simulate the internal fluid flow in it. The BP neural network model in the MATLAB and the data fitting software were used to calculate the experiment data, and finally got the relation formula between the coke yield and the reaction data. The relation formula was used as a variable to insert into the simulation result files of CFD-post. Finally the contour of the coking data can be seen directly from the wall, combining with the internal flow field, the easy-coking position can be estimated. The result shows that, in this model, the easy-coking positions concentrated on the middle on the bottom, the central region of the upper surface on the distribution tray and joint of the tray and the wall.

Keywords： suspended bed reactor； BP neural network； coke yield

Received 2016-04-29;

Corresponding Authors: 肖晓明,E-mail:xmxiao@tju.edu.cn。 Email: xmxiao@tju.edu.cn

About author: 张晓(1992-),女,硕士研究生,现从事计算流体力学模拟方面的研究。

引用本文:

张晓, 姜斌, 肖晓明.悬浮床加氢反应器壁面的结焦预测[J]. 化学工业与工程, 2018,35(1): 69-74

Zhang Xiao, Jiang Bin, Xiao Xiaoming.Prediction of the Coking on the Wall of the Suspended Bed Reactor for Hydrogenation Reaction[J]. Chemcial Industry and Engineering, 2018,35(1): 69-74

[1] 李雪静, 任文坡. 国内外渣油悬浮床加氢裂化技术进展[J]. 石化技术, 2012, (1):65-70 Li Xuejing, Ren Wenpo. Technical progress of the residue suspended bed hydrocracking at home and abroad[J]. Petrochemical Industry Technology, 2012, (1):65-70(in Chinese)
[2] 刘东, 张宏玉, 马魁菊, 等. 不同催化体系下渣油悬浮床加氢的结焦状况[J]. 石油学报:石油加工, 2007, 23(4):39-43 Liu Dong, Zhang Hongyu, Ma Kuiju, et al. The coking situation of residue suspended bed hydrocracking in different catalyst system[J]. Acta Petrolei Sinica(Petroleum Processing Section)2007, 23(4):39-43(in Chinese)
[3] 薄守石, 王剑, 白飞, 等. 2种重油悬浮床加氢反应器流体力学特性的比较[J]. 石油学报:石油加工, 2015, 31(6):1408-1415 Bo Shoushi, Wang Jian, Bai Fei, et al. Comparison of hydrodynamic characteristics in two heavy oil slurry bed hydrocracking reactors[J]. Acta Petrolei Sinica(Petroleum Processing Section), 2015, 31(6):1408-1415(in Chinese)
[4] 张涛. 内循环流化床反应器流动传质特性的计算流体力学模拟研究[D]. 深圳:华南理工大学, 2012 Zhang Tao. Simulation of mass transfer and hydrodynamic characteristics in internal loop fluidized bed reactor by computational fluid dynamics method[D]. Shenzhen:South China University of Technology, 2012(in Chinese)
[5] 张喆. 气升式环流反应器CFD优化研究[D]. 上海:上海交通大学, 2009 Zhang Zhe. CFD simulations on the internal loop air-lift bioreactor[D]. Shanghai:Shanghai Jiao Tong University, 2009(in Chinese)
[6] Lopes G C, Rosa L M, Mori M, et al. Three-Dimensional modeling of fluid catalytic cracking industrial riser flow and reactions[J]. Computers & Chemical Engineering, 2011, 35(11):2159-2168
[7] 代飞. 煤焦油加氢集总动力学模型的研究[D]. 山东青岛:青岛科技大学, 2012 Dai Fei. A study on lumped kinetic model of coal tar hydrocracking process[D]. Shandong Qingdao:Qingdao University of Science and Technology, 2012(in Chinese)
[8] 飞思科技产品研发中心. 神经网络理论与MATLAB 7实现[M]. 北京:电子工业出版社, 2005 FECIT Technological Product Research Center. Neural network theory and MATLAB7 realization[M]. Beijing:Publishing House of Electronics Industry, 2005(in Chinese)
[9] 夏博康. 加氢反应器内构件的发展[J]. 石油化工设备技术, 1995, (1):13-19 Xia Bokang, Development of hydrogenation reactors internals[J]. Petro-Chemical Equipment Technology, 1995, (1):13-19(in Chinese)