Method for refining hydrogen

Hydrogen Refining Test by the Method for Refining Hydrogen According to the First and the Second Embodiments

[0039]The inside of the primary side space 3′ of the cell of the hydrogen refining device was heated to 600° C., and hydrogen was introduced and heated for 10 hours. Subsequently, the inside of the primary side space 3′ of the cell of the hydrogen refining device was decreased to 420° C. Raw material hydrogen containing about 500 ppm of impurities (nitrogen, oxygen, carbon dioxide, etc.) in total was then introduced at a flow rate of 14 L / min from the raw material hydrogen inlet 4 to allow pure hydrogen to penetrate the palladium alloy capillaries. While the pure hydrogen was collected through the pure hydrogen outlet 5, gas containing impurities that does not penetrate the palladium alloy capillaries was removed from the primary side space 3′ at a flow rate of 0.7 L / min (5% of the introduction flow rate of the raw material hydrogen). After 1 hour, about 800 L of pure hydrogen...

Hydrogen Refining Test by the Method for Refining Hydrogen According to the Third Embodiment

[0041]The hydrogen refining test was performed with the same hydrogen refining device as that used in Example 1. The hydrogen refining test was performed in the same way as Example 1 except that raw material hydrogen containing about 2000 ppm of impurities in total was used. From raw material hydrogen introduced at 14 L / min, gas containing impurities that does not penetrate the palladium alloy capillaries was removed at a flow rate of 1.4 L / min (0.00005 times the value ab (a: 14, b: 2000)). After 1 hour, about 760 L of pure hydrogen was obtained from the pure hydrogen outlet pipe 13.

Hydrogen Refining Test by the Method for Refining Hydrogen According to the Fourth Embodiment

[0042]The hydrogen refining test was performed with the same hydrogen refining device as that used in Example 1. The hydrogen refining test was performed in the same way as Example 1 except that raw material hydrogen containing about 200 ppm of impurities in total was used. From raw material hydrogen introduced at 14 L / min, gas containing impurities that does not penetrate the palladium alloy capillaries was removed at a flow rate of 0.14 L / min (0.00005 times the value ab (a: 14, b: 200)). After 1 hour, about 830 L of pure hydrogen was obtained from the pure hydrogen outlet pipe 13.