Bottoms 250-5000ml, tower diameter Φ20-50mm, tower 500-1500mm, filler Φ3 × 3 stainless steel θ ring packing, the above parameters can be developed according to customer demand, the tower head for the serpentine tube condenser, reflux ratio controller double ring delay relay control solenoid control range of 1: 99-99: 1. Intelligent temperature control system for temperature control accuracy of ± 0.1 ℃, bottoms heating units or electric heating plate, temperature range of room temperature -250 ℃, the tower section plated transparent electrical heating film, temperature range of room temperature -180 ℃. Containing a vacuum system, often under reduced pressure operation. Vacuum system up 600-60Pa, about 5-0.5mmHg. The device is a distillation small scale experimental apparatus, with over-temperature alarm function, the heating rate is adjustable. Under suitable teaching, research, atmospheric or vacuum petroleum fractions, alcohols, ethers, and traditional Chinese medicine volatile oil distillation, high separation efficiency, simple operation, heat stability, good insulation effect, experimental phenomena intuitive and controllable advantages. Model: atmospheric and vacuum distillation unit glass reactor CY-FJ-2 glass azeotropic distillation unit CY-GJ-2 glass extractive distillation unit CY-CJ-2 atmospheric and vacuum distillation unit of ordinary glass CY-PJ-2