仿蜂巢微通道分叉结构的甲醇重整制氢

doi:10.3969/j.issn.0438-1157.2013.06.037

化工学报 ›› 2013, Vol. 64 ›› Issue (6): 2177-2185.DOI: 10.3969/j.issn.0438-1157.2013.06.037

仿蜂巢微通道分叉结构的甲醇重整制氢

卜永东, 沈寅麒, 杜小泽, 杨立军, 杨勇平

华北电力大学能源动力与机械工程学院,北京 102206

收稿日期:2012-10-19 修回日期:2013-01-06 出版日期:2013-06-05 发布日期:2013-06-05
通讯作者: 杜小泽
作者简介:卜永东(1966—),男,博士研究生。
基金资助:
国家自然科学基金项目(59676031);教育部高等学校博士学科点专项科研基金课题(20090036110004)。

Hydrogen production by steam reforming of methanol in reactor with comby micro-channel network

BU Yongdong, SHEN Yinqi, DU Xiaoze, YANG Lijun, YANG Yongping

School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Received:2012-10-19 Revised:2013-01-06 Online:2013-06-05 Published:2013-06-05
Supported by:
supported by the National Natural Science Foundation of China(50976031).

摘要/Abstract

摘要： 针对甲醇蒸汽的微通道重整催化反应过程,建立了三维稳态多组分传输反应模型;利用数值模拟分析,分别研究了平行阵列微通道和仿蜂巢分叉微通道在Zn_Cr/CeO₂/ZrO₂催化剂下的反应情况。通过双速率模型考察这两种流道中操作条件对甲醇蒸汽重整制氢输运规律的影响,发现这两种微通道反应器均可促进甲醇转化率和氢气产率的提高。与常规平行微通道的比较发现,仿蜂巢分叉微通道内反应气流动所需的泵功较小;在相同的加热面积下所能吸收的热量更大,而且更有利于反应器内温度的均匀分布,从而提高甲醇的转化率、减小出口CO的含量。研究结果表明,仿蜂巢分叉微通道结构具有较好的重整制氢综合性能,并可改善氢气产出的品质。

关键词: 微通道, 甲醇重整, 制氢, 质子交换膜燃料电池

Abstract: For methanol steam reforming process in a micro-channel reactor, a steady-state multi-component three-dimension transport-reaction model was established.The catalytic process over Zn_Cr/CeO₂/ZrO₂ taken place in rectangular parallel micro-channels and in comby fractal micro-channel network was simulated numerically, and the effect of operating condition on reaction performance was investigated. The results indicated that the use of these micro-channels can make methanol conversion and hydrogen yield increase.Meanwhile, compared with rectangular parallel micro-channels, comby micro-channel network is of several advantages:much smaller requirement for pump power, adsorbing more heat under the same heating area and producing more uniform distribution of temperature.So, methanol conversion can be enhanced and CO reduced, which improve quality of hydrogen production.

Key words: micro-channel, methanol reforming, hydrogen production, PEMFC

中图分类号:

TK124

卜永东, 沈寅麒, 杜小泽, 杨立军, 杨勇平. 仿蜂巢微通道分叉结构的甲醇重整制氢[J]. 化工学报, 2013, 64(6): 2177-2185.

BU Yongdong, SHEN Yinqi, DU Xiaoze, YANG Lijun, YANG Yongping. Hydrogen production by steam reforming of methanol in reactor with comby micro-channel network[J]. CIESC Journal, 2013, 64(6): 2177-2185.

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仿蜂巢微通道分叉结构的甲醇重整制氢

Hydrogen production by steam reforming of methanol in reactor with comby micro-channel network

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