| 摘要 |
<p>Circulation of the liq. to be distilled takes place freely and continuously under reduced pressure produced by vacuum pump applied to the outlet of condenser. In the first variant the liq. is preheated while in the second it is not. In the second variant, the power of pump is increased to produce the vacuum needed for distn. at ambient temp. In addn. to dispersing with heat source, this variant required only a single chamber for evaporation, inside which is situated condenser, while in the first variant, a previous chamber is needed for pre-heating, in which condenser is situated.</p> |
