Pure hydrogen generation in a fluidized bed membrane reactor: Application of the generalized comprehensive reactor model

被引:37
作者
Mahecha-Botero, Andres [1 ]
Grace, John R. [1 ,2 ]
Lim, C. Jim [1 ,2 ]
Elnashaie, S. S. E. H. [3 ]
Boyd, Tony [2 ]
Gulamhusein, Ali [2 ]
机构
[1] Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada
[2] Membrane Reactor Technol MRT Ltd, Vancouver, BC V6C 1S4, Canada
[3] MUST, Coll Engn, Sixth of October City, Egypt
关键词
Reactor modelling; Chemical reactors; Fluidization; Membrane reactor; Steam methane reforming; Membranes; Simulation; FINE POWDERS; FLOW REGIMES; HIGHER HYDROCARBONS; DENSE PHASE; METHANE; GAS; REFORMER; SIMULATION; PALLADIUM; OXIDATION;
D O I
10.1016/j.ces.2009.05.025
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
A generalized comprehensive model was developed to simulate a wide variety of fluidized-bed catalytic reactors. The model characterizes multiple phases and regions (low-density phase. high-density phase, staged membranes, freeboard region) and allows for a seamless introduction of features and/or simplifications depending on the system of interest. The model is implemented here for a fluidized-bed membrane reactor generating hydrogen. A concomitant experimental program was performed to collect detailed experimental data in a pilot scale prototype reactor operated under steam methane reforming (SMR) and auto-thermal reforming (ATR) conditions, without and with membranes of different areas under diverse operating conditions. The results of this program were published in Mahecha-Botero et al. [2008a. Pure hydrogen generation in a fluidized bed membrane reactor: experimental findings. Chem. Eng. Sci. 63(10), pp. 2752-2762]. The reactor model is tested in this second paper of the series by comparing its simulation predictions against axially distributed concentration in the pilot reactor. This leads to a better understanding of phenomena along the reactor including: mass transfer, distributed selective removal of species, interphase cross-flow, flow regime variations, changes in volumetric flow, feed distribution, and fluidization hydrodynamics. The model does not use any adjustable parameters giving reasonably good predictions for the system of study. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:3826 / 3846
页数:21
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