Abstract
A hydrogen purifier equipped with Pd-Cu-Ni/PNS membranes has been developed to purify low-grade hydrogen and supply it to processes requiring high-purity hydrogen. The purifier does not include any purge system to flush out hydrogen from the membrane module to prevent membrane embrittlement because there is no α-β phase transition below the critical point of the Pd-H system, making the purifier simple. The hydrogen purifier was tested with three different grades of hydrogen, 90, 99 and 99. 9%, to determine the effects of the grade of feed hydrogen on the hydrogen permeation behavior. A lower grade required a lower recovery ratio of the purifier to obtain a given relative hydrogen permeation flux. It was confirmed that the purifier can provide high-purity hydrogen to a gas chromatograph (GC) for carrier and make-up gases. A 75-day durability test provided evidence that the hydrogen purifier could be useful for extended periods as needed for commercial processes.
Original language | English |
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Pages (from-to) | 235-240 |
Number of pages | 6 |
Journal | Korean Journal of Chemical Engineering |
Volume | 27 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2010 Jan |
Keywords
- Composite Membrane
- Hydrogen
- Membrane Module
- Pd Based Membrane
- Purifier
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)