Dynamic analysis of millimetre-scale fixed bed reactors for Fischer-Tropsch synthesis

被引：14
作者：
Mandic, Milos [1 ]
Dikic, Vladimir [1 ]
Petkovska, Menka [1 ]
Todic, Branislav [1 ,2 ]
Bukur, Dragomir B. [2 ,3 ]
Nikacevic, Nikola M. [1 ]
机构：
[1] Univ Belgrade, Fac Technol & Met, Belgrade, Serbia
[2] Texas A&M Univ Qatar, Dept Chem Engn, Doha, Qatar
[3] Texas A&M Univ, Artie McFerrin Dept Chem Engn, College Stn, TX 77843 USA
来源：
CHEMICAL ENGINEERING SCIENCE | 2018年 / 192卷
关键词：
Fischer-Tropsch synthesis; Fixed-bed reactors; Dynamic simulations; Milli-reactors; Step-change-response analysis; Thermal runaway; COBALT CATALYSTS; KINETIC-MODEL; MICROSTRUCTURED REACTORS; MULTIPHASE MODEL; THERMAL-BEHAVIOR; SLURRY REACTOR; TUBE DIAMETER; PARTICLE-SIZE; SELECTIVITY; MULTISCALE;
D O I：
10.1016/j.ces.2018.07.052
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Dynamic performance of a milli-scale fixed bed reactor for Fischer-Tropsch synthesis (FTS) was studied using a dynamic pseudo-homogeneous 1D reactor model. The model uses detailed kinetics to describe the rates of FTS product formation. Dynamic responses of the process variables and main performance indicators, including productivity of C-5(+) hydrocarbons and CH4 selectivity, to input step changes, were analyzed. Total of 7 inlet variables were used in step-change-response analysis, with different magnitudes of change and for two initial steady-state conditions. Reactor simulations show highly nonlinear behavior due to phenomena coupling and fast dynamics due to system small scale and intensified rates within. In addition, reactor model shows instability related to thermal runaway with certain magnitudes of step change of coolant temperature and feed flow rate. The analysis outlines the effects of potential process disturbances on operation of milli-scale fixed bed reactor for FTS and provides general guidelines for control systems. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：434 / 447
页数：14
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