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使用液氮如何避免液氮凍傷

時間:2023-09-27 15:43來源:班德公司 作者:小編 點擊:

  液氮是一種惰性液體,溫度很低,不易燃。工業氮氣是從大氣中分離出來的,因為氮氣占空氣的78%,但是在液氮蒸發的過程中會吸收熱量,造成凍傷。但是如何避免凍傷呢?

充液氮

  工業氮氣是通過在空氣中分餾液氮得到的。先凈化空氣,然后在加壓冷卻的環境中液化,根據自身的性質分離不同的沸點。自增壓液氮罐

  在使用液氮的過程中,人體皮膚接觸液氮的時間不超過2秒,皮膚不會凍傷。平時使用液氮時,液氮已經蒸發了一部分,手上會形成一層膜,需要將手與液氮分開,以免凍傷。當液氮蒸發后,凍傷的皮膚接觸到高溫空氣時會變熱,所以剛開始會變涼,20秒以上就會燒傷。因此,我們在使用液氮時需要做好保護工作。運輸型液氮罐



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