A micro-reactor with micro-pin-fin arrays for hydrogen production via methanol steam reforming
A micro-reactor with micro-pin-fin arrays for hydrogen production via methanol steam reforming
复制标题
具有微针翅阵列的微反应器，用于通过甲醇蒸汽重整制氢
DOI：
10.1016/j.jpowsour.2011.12.062
复制
发表时间：
2012-05-01
影响因子：
9.2
通讯作者：
Chen, Zichen
中科院分区：
文献类型：
--
作者：
Mei, Deqing;Qian, Miao;Chen, Zichen
为提高燃料电池甲醇水蒸气重整制氢（SMR）微反应器的紧凑性，基于微触变成形技术，设计并制作了一种新型微针翅阵列（MPFAR）微反应器。采用三维模型对微反应器内的传热传质过程进行了数值分析。结果表明，MPFAR中甲醇的转化率高于微通道反应器，催化剂载体中的速度和温度分布均匀。较高的反应温度和接触时间导致较高的甲醇转化率和出口处的CO摩尔分数，而较高的蒸汽与甲醇（SC-1）摩尔比导致较低的CO摩尔分数。最后，进行了实验，以测试的MPFAR的制氢性能。实验结果与仿真结果吻合较好，验证了仿真模型的准确性。当SC-1的摩尔比为1.2和接触时间为0.12 S. MPFAR的甲醇转化率可达87.5%，出口氢气摩尔分数约为75%，适合应用于燃料电池系统。(C)2012爱思唯尔有限公司版权所有。
To enhance the compactness of the micro-reactors for hydrogen production via methanol steam reforming (SMR) for fuel cell, a novel micro-reactor with micro-pin-fin arrays (MPFAR) is designed and fabricated based on the micro thixo-forming technology. A three-dimensional model is adopted in the numerical analysis to investigate the heat and mass transfer in the micro-reactor. The results show that the methanol conversion in the MPFAR is higher than that in a micro-channel reactor, the velocity and temperature distribution is uniform in the catalyst support. Higher reaction temperature and contact time result in higher methanol conversion and CO molar fraction at the outlet, while a higher steam to methanol (SC-1) molar ratio results in a lower CO molar fraction. Finally, experiments are conducted to test the performance of the MPFAR for hydrogen production. The experimental results agree well with the simulated ones, which validate the accuracy of the simulation model. When the SC-1 molar ratio and the contact time are 1.2 and 0.12 S. respectively, the methanol conversion of the MPFAR reaches to 87.5% with the hydrogen molar fraction of about 75% at the outlet, which is suitable for the application in the fuel cell system. (C) 2012 Elsevier B.V. All rights reserved.