酒精為什麼不可直接加熱?? - 酒精
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By David
at 2005-11-09T00:00
at 2005-11-09T00:00
Table of Contents
如題:
酒精為什麼不可以直接用陶瓷纖維網加熱??
會引爆嗎??
酒精為什麼不可以直接用陶瓷纖維網加熱??
會引爆嗎??
Tags:
酒精
All Comments
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By Damian
at 2005-11-09T10:42
at 2005-11-09T10:42
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By Donna
at 2005-11-12T09:40
at 2005-11-12T09:40
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By Frederic
at 2005-11-13T17:08
at 2005-11-13T17:08
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By David
at 2005-11-12T15:18
at 2005-11-12T15:18
所以一般加熱甲醇會用水浴法,一來可以受熱均勻,減少突沸的危險;二來可以使甲醇溫度慢慢上升,降低蒸氣的冒出速率。
補充:在純化甲醇(利用甲醇與溶液中不純物之間的沸點差異來純化)時才會直接加熱甲醇(油浴法),上端會加個迴流管和冷凝管,並通冰水讓甲醇蒸氣快速冷凝,避免甲醇蒸氣跑出來。(補充的這一點就給你當而外知識吧,不懂沒關係,以後你可能會學到的)
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