月 Experimental section At the end of the extraction, first stop the heating remove the extraction device after cooling for a while change it to a distillation device, distill off most of the ethanol, pour the concentrated liquid in the bottle into the evaporating dish immediately, and add 5-6g of Thermometer quicklime powder into it. Stir-fry in a water steam bath atmosphere Three-way Evaporating dish adapter clamp Boiling water Vacuum adapter Water steam bath Distillation deviceAt the end of the extraction, first stop the heating, remove the extraction device after cooling for a while, change it to a distillation device, distill off most of the ethanol, pour the concentrated liquid in the bottle into the evaporating dish immediately, and add 5-6g of quicklime powder into it. Stir-fry in a water steam bath atmosphere. Experimental section Three-way adapter Vacuum adapter Thermometer clamp Evaporating dish Boiling water Water steam bath Distillation device