Potassium fluoride,anhydrous
           Potassium fluoride,extra pure
           Potassium fluoride,Granular
           Silicon Dioxide
           Hydrofluoric acid
           Synthetic Cryolite
           Potassium Fluoaluminate
           Ammonium bifluoride
           Potassium Bifluoride
           Aluminium fluoride
           Sodium fluoride
           Potassium Fluorosilicate
           Fluorosilicic Acid
           Sodium silicofluoride
           Potassium Hydroxide Flakes
           Magnesium Fluoride
           Magnesium fluorosilicate
           Barium Fluoride
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The application of extraction distillation technology and salt separation technology in the separation of methanol-tetrahydrofuran-water system was studied.

The solvents used in extractive distillation were selected and the tetrahydrofuran-water system was separated by potassium fluoride. The process flow was designed. The experimental results show that the purity of methanol and tetrahydrofuran can be more than 99.0% by using methanol and tetrahydrofuran.