| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a technology capable of using an evaporator comprising a titanium-palladium alloy with high reliability for a long period by preventing wall thinning of the evaporator. <P>SOLUTION: When waste hydrochloric acid containing an iron component is supplied into an evaporator 1 made of a titanium-palladium alloy and heated to recover hydrochloric acid vapor, the Fe<SP POS="POST">3+</SP>concentration in the evaporator into which the waste hydrochloric acid is supplied is kept to be≥5 g/L. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
