期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 12, 页码 7401-7411出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2019.04.118
关键词
Hydrogen separation and purification; Palladium (Pd) membrane; Concentration polarization; Vacuum; Permeance; Improvement
资金
- Ministry of Science and Technology, Taiwan, R.O.C. [MOST 105-2221-E-006-188-MY3, 107-3113-E-006-010]
- Bureau of Energy, Ministry of Economic Affairs, Taiwan, R.O.C.
Hydrogen purification using palladium (Pd) membrane technology has been seen as a potential solution for producing pure hydrogen form hydrogen-rich gas. Compared to traditional practices of operating the permeate side of the membrane at atmospheric pressure, in this study, a vacuum is applied. The effects of various vacuum degrees applied to the permeate side of the Pd membrane are investigated and compared to the results under normal operation without a vacuum. The feed gas used for experiments consists of a mixture of hydrogen (70 vol%) and nitrogen (30 vol%). Three membrane operating temperatures (320, 350, and 380 degrees C), four pressure differences (2, 3, 4, and 5 atm) across the membrane, and four vacuum degrees (-15, -30, -45, and -53 kPa) applied to the permeate side are considered. For the three operating temperatures, the best improvements in the performance of hydrogen permeation are at 320 and 350 degrees C when a -53 kPa vacuum is applied, resulting in 79.4% and 79.1% improvements, respectively, compared to normal operations. Increasing temperatures leads to an increase in H2 permeation both with and without a vacuum; however, best performances of H2 permeation are observed in cases without a vacuum. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据