| 摘要 |
A device for solvent distillation is provided, in which the solvent, for separation from impurities, is evaporated by supply of heat in a still and is then condensed outside the still by cooling, and which has an air circulation line conducted in a closed circuit from the space above the liquid level in the still via the heat-removing heat exchanger (evaporator) and then via the heat exchanger giving off heat (condenser) of a refrigeration machine, a circulation fan and an immersion pipe penetrating into the liquid solvent in the still.
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