High pressure palladium membrane reactor for the high temperature water-gas shift reaction
High pressure palladium membrane reactor for the high temperature water-gas shift reaction
复制标题
DOI：
10.1016/j.ijhydene.2011.01.172
复制
发表时间：
2011-05-01
影响因子：
7.2
通讯作者：
Kazantzis, Nikolaos K.
中科院分区：
文献类型：
--
作者：
Augustine, Alexander S.;Ma, Yi Hua;Kazantzis, Nikolaos K.
水煤气变换（WGS）催化膜反应器（CMR）结合了复合Pd膜并在高温和高压下操作，可以极大地有助于提高几种H-2生产方法和绿色发电的效率。为此，混合气体渗透实验和WGS CMR实验已经用多孔Inconel支撑的无电镀Pd膜进行，以更好地理解这些过程的功能和能力。在350 ℃、400 ℃和450 ℃、14.4 bar（P管= 1 bar）和空速高达45，000 h（-1）的条件下，通过复合膜分离H-2/He、H-2/CO2的二元混合物和H-2、CO2和CO的三元混合物。H-2渗透抑制所造成的可逆的表面结合，观察到由于CO和CO2的混合物和膜抑制系数的存在下，估计。此外，考虑到H2O/CO比以及温度对反应器性能的影响，在14.4巴（P管= 1巴）下用CO和蒸汽进料、1.1-2.6的H2O/CO比以及高达2900 h（-1）的GHSV进行WGS CMR实验。还在14.0巴（P-管= 1巴）和400-450 ℃下用模拟合成气进料进行实验，评估空速对反应器性能的影响。在450 ℃时，CO转化率最高可达98.2%，H2回收率为81.2%。高CO转化率的最佳操作温度确定为约450 ℃，并且在450 ℃下以高生产量实现高CO转化率和H-2回收率，这通过14.4巴的反应压力成为可能。版权所有（C）2011，氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
The water gas shift (WGS) catalytic membrane reactor (CMR) incorporating a composite Pd-membrane and operating at elevated temperatures and pressures can greatly contribute to the efficiency enhancement of several methods of H-2 production and green power generation. To this end, mixed gas permeation experiments and WGS CMR experiments have been conducted with a porous Inconel supported, electroless plated Pd-membrane to better understand the functioning and capabilities of those processes. Binary mixtures of H-2/He, H-2/CO2, and a ternary mixture of H-2, CO2 and CO were separated by the composite membrane at 350, 400, and 450 degrees C, 14.4 bar (P-tube = 1 bar), and space velocities up to 45,000 h(-1). H-2 permeation inhibition caused by reversible surface binding was observed due to the presence of both CO and CO2 in the mixtures and membrane inhibition coefficients were estimated. Furthermore, WGS CMR experiments were conducted with a CO and steam feed at 14.4 bar (P-tube = 1 bar), H2O/CO ratios of 1.1-2.6, and GHSVs of up to 2900 h(-1), considering the effect of the H2O/CO ratio as well as temperature on the reactor performance. Experiments were also conducted with a simulated syngas feed at 14.0 bar (P-tube = 1 bar), and 400-450 degrees C, assessing the effect of the space velocity on the reactor performance. A maximum CO conversion of 98.2% was achieved with a H-2 recovery of 81.2% at 450 degrees C. An optimal operating temperature for high CO conversion was identified at approximately 450 degrees C, and high CO conversion and H-2 recovery were achieved at 450 degrees C with high throughput, made possible by the 14.4 bar reaction pressure. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.