US 9,809,454 B2
Method for refining hydrogen
Yoshinao Komiya, Hiratsuka (JP); Satoshi Arakawa, Hiratsuka (JP); Toshio Akiyama, Atsugi (JP); Yasuo Sato, Chigasaki (JP); and Noboru Takemasa, Hadano (JP)
Assigned to JAPAN PIONICS CO., LTD., Kanagawa (JP)
Filed by JAPAN PIONICS CO., LTD., Hiratsuka-shi, Kanagawa (JP)
Filed on Oct. 2, 2015, as Appl. No. 14/873,380.
Claims priority of application No. 2014-217191 (JP), filed on Oct. 24, 2014; and application No. 2014-233363 (JP), filed on Nov. 18, 2014.
Prior Publication US 2016/0115022 A1, Apr. 28, 2016
Int. Cl. B01D 53/22 (2006.01); B01D 53/00 (2006.01); C01B 3/50 (2006.01)
CPC C01B 3/505 (2013.01) [B01D 53/00 (2013.01); B01D 53/228 (2013.01); B01D 2256/16 (2013.01); C01B 2203/0233 (2013.01); C01B 2203/043 (2013.01); C01B 2203/0405 (2013.01); C01B 2203/046 (2013.01); C01B 2203/1211 (2013.01); C01B 2203/1223 (2013.01); C01B 2203/1241 (2013.01); C01B 2203/1247 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method for refining hydrogen, comprising: introducing raw material hydrogen containing impurities to the primary side space of a cell divided into a primary side space and a secondary side space by a plurality of palladium alloy capillaries each having one end being closed and a tube sheet supporting the palladium alloy capillaries at the open end of the palladium alloy capillaries; allowing hydrogen to permeate the palladium alloy capillaries so as to collect pure hydrogen from the secondary side space; and removing gas containing impurities that does not penetrate the palladium alloy capillaries from the primary side space at the flow rate of from 0.00002 to 0.0002 times of the value ab calculated by multiplying the introduction flow rate a of the raw material hydrogen by the content b (ppm) of the impurities contained in the raw material hydrogen.