This device is used in medicine, food, light industry and chemo-industry for recycling alcohol, also applicable for distillation of methanol and other dissolvent. It can distill alcohol of about 30℃ into that of 90℃-95℃ according to users’requirements. The denser the alcohol is, the bigger rate of counterflow it causes, reducing producing amount accordingly. W-type which is designed with intermission can also be used to distill methanol.