| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for highly purifying an argon gas by effectively reducing an impurity content in the argon gas, lowering load of subsequent absorption treatment thereby. <P>SOLUTION: When purifying an argon gas containing at least oxygen, hydrogen, carbon monoxide and nitrogen as impurities, the purification is carried out by the followings: bringing the value of oxygen molar concentration in the argon gas into more than half of the total value of carbon monoxide molar concentration and hydrogen molar concentration; reacting the oxygen with the carbon monoxide and the hydrogen to form carbon dioxide and water in the state of partially remaining the oxygen; lowering a water content through a dehydration process; adding dry carbon monoxide to the argon gas, bringing the value of carbon monoxide molar concentration into more than two times that of oxygen; forming carbon dioxide by reacting oxygen with the added dry carbon monoxide in the state of partially remaining the carbon monoxide; and then reducing the content of the impurities in the argon gas by using an adsorbent. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
