Hydrogen permeation enhancement in a Pd membrane tube system under various vacuum degrees

Wei-Hsin Chen, Jamin Escalante, Yen Hsun Chi, Yu Li Lin

Research output: Contribution to journalArticle

Abstract

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 °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 °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 H 2 permeation both with and without a vacuum; however, best performances of H 2 permeation are observed in cases without a vacuum.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusPublished - 2019 Jan 1

Fingerprint

Permeation
Palladium
palladium
Vacuum
tubes
membranes
Membranes
Hydrogen
vacuum
augmentation
hydrogen
operating temperature
Membrane technology
Gases
gases
purification
Temperature
Atmospheric pressure
Purification
atmospheric pressure

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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title = "Hydrogen permeation enhancement in a Pd membrane tube system under various vacuum degrees",
abstract = "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 °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 °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 H 2 permeation both with and without a vacuum; however, best performances of H 2 permeation are observed in cases without a vacuum.",
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year = "2019",
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Hydrogen permeation enhancement in a Pd membrane tube system under various vacuum degrees. / Chen, Wei-Hsin; Escalante, Jamin; Chi, Yen Hsun; Lin, Yu Li.

In: International Journal of Hydrogen Energy, 01.01.2019.

Research output: Contribution to journalArticle

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