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2019-07-06View Original

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{"Selección de de la columna de destilacióninga",,
Reply #22019-07-08
{"Ayuda: Estoy做ing un destil塔压减压蒸馏,双组分沸点负压差相差
Reply #32019-07-08
谢谢,5L的三口烧瓶装多少物料合适?还有,如果精馏柱不变的话,会不会造成泛塔?求指教
Reply #42019-07-08
用于蒸馏实验时,烧瓶的装料量最好控制40-60%(防止沸腾鼓泡或爆沸飞溅)。 关于蒸馏柱高度、直径,2楼回答的很明确:高度由物料组成和分离精度决定;直径由蒸馏速度(蒸发量)决定,如果蒸馏速度控制根原来实验一样,采用原来的蒸馏柱即可。 但是,实际来讲,既然你的烧瓶加大了,意味着加热面积增加了,蒸发量肯定加大,蒸馏柱直径应该相应选大一点,直径选择依据:根据原实验蒸发量/蒸馏柱直径算一下空塔气速,然后根据放大实验的蒸发量选择同样空速的直径即可;塔高:虽然物料组成、蒸馏精度不变,塔高也可以不变,但实际上,蒸馏塔需要考虑合适的高径比,尤其是小型实验塔,存在壁效应,故:直径放大,高度也要考虑加高! 以上。
Reply #52019-07-08
学*了 谢谢指教:handshake

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