公开(公告)号：EP1553050A4

公开(公告)日：2006-08-30

申请号：EP03755286

申请日：2003-05-26

申请人： TAIYO NIPPON SANSO CORP ,  OHMI TADAHIRO

发明人： OHMI TADAHIRO ,  YAZAKI RYUICHI ,  KAWAI MASATO ,  KIMIJIMA TETSUYA ,  MATSUDA KUNIO

IPC分类号： B01D53/04 ,  B01D53/26 ,  B01D53/28 ,  B01D53/75 ,  B01D53/86 ,  B01D53/94 ,  B01J20/18 ,  C01B5/00 ,  C01B21/04 ,  C01B23/00

CPC分类号： C01B21/0466 ,  B01D53/04 ,  B01D53/26 ,  B01D53/75 ,  B01D53/86 ,  B01D2253/108 ,  B01D2257/80 ,  C01B5/00 ,  C01B21/0416 ,  C01B21/0422 ,  C01B23/0021 ,  C01B23/0026 ,  C01B2210/0035 ,  C01B2210/0037 ,  C01B2210/0053 ,  C01B2210/0075 ,  Y02C20/10

摘要： A method for gas purification wherein a mixed gas containing a rare gas and nitrogen as main components and hydrogen, a reaction product comprising nitrogen and hydrogen and steam as trace components is freed of the trace components, which comprises an adsorbing step of removing the reaction product comprising nitrogen and hydrogen and steam, a hydrogen oxidation step of converting hydrogen to steam by a catalytic hydrogen oxidizing reaction in the presence of oxygen, and then a drying step of removing the steam formed in the hydrogen oxidation step. When the mixed gas further contains a nitrogen oxide, a denitration step of converting the nitrogen oxide to nitrogen and steam in the presence of a reducing substance is carried out prior to the above adsorption step.