Solvent distillation equipment is widely used in various fields. The following are some specific application cases:
In the chemical industry, a resin enterprise in Luzhou, Sichuan Province, uses the TE-300L (negative pressure) solvent distillation and recovery equipment from Jiebate Company to recover ethyl acetate, xylene and other solvents from the waste solvents in the bucket-washing process. This has achieved energy conservation and emission reduction, lowered the production costs and environmental protection pressure of the enterprise.
In the pharmaceutical industry, during the production of anti-tumor drugs, the dichloromethane solvent can be removed through vacuum distillation using a rotary evaporator in the solvent distillation equipment, while retaining the high-purity active ingredients. This helps to enhance the quality and output of the drugs.
In the laboratory field, after chemical synthesis experiments, there are often waste solutions of ethyl acetate containing a small amount of acetic acid. By using a laboratory distillation column and taking advantage of the boiling point difference between ethyl acetate (77°C) and acetic acid (117°C), through distillation, ethyl acetate with a purity of over 95% can be recovered. These recovered ethyl acetate can be reused for extraction or reactions. In analytical experiments, such as after HPLC experiments, waste acetonitrile is produced. By using a laboratory distillation column, controlling the distillation temperature (acetonitrile boiling point 81°C), and adjusting the reflux ratio (usually 1:3 to 1:5), trace amounts of water and sample impurities can be removed. The recovered acetonitrile can have a purity of over 99% and can be reused for non-precision analytical experiments.
In the food industry, the rotary evaporator can be used to separate volatile flavor substances in food during food component analysis. For instance, when analyzing the aroma components in fruit juice, the rotary evaporator is first used to concentrate the juice, and then combined with gas chromatography-mass spectrometry to identify the components, which helps in food flavor research and quality control.
In the field of environmental protection, the recovery of organic solvents from industrial wastewater is one of the significant applications of solvent distillation equipment. For instance, through distillation equipment, organic solvents such as acetone can be recovered from industrial wastewater, reducing pollutant emissions, achieving resource reuse, and also lowering the difficulty and cost of wastewater treatment.
