| 摘要 |
<p>PURPOSE:To prevent satisfactorily the leakage of harmful gas caused by the evaporation of a reaction liquid by providing an injection apparatus which is connected to a gas absorption tower and injects the reaction liquid which has high vapor pressure and is reacted with the desired gas to be absorbed. CONSTITUTION:When the desired gas to be absorbed is UF6 and a reaction liquid is aniline, HF is collected in a gas absorption tower 1 by aniline and at the same time aniline which evaporate and leaks out is condensed and returned to a tank. As a result of the leakage of aniline, a lack of aniline occurs within the tower 1 and the HF concentration at the outlet of the tower 1 is increased. The increase in the concentration is detected by a concentration meter 9. The opening of an adjusting valve 8 is adjusted depending on the increase of HF concentration, thereby a large amount of aniline is injected into the tower 1 and the HF concentration at the outlet of the tower 1 is reduced.</p> |
