Energy-saving rectification device

The utility model relates to the technical field of rectification equipment, and discloses an energy-saving rectification device which comprises a base, a distillation box is arranged at one end above the base, a rectification tower is arranged on the distillation box, a first guide pipe is arranged on the rectification tower, a condenser is arranged on one side of the first guide pipe, and a second guide pipe is arranged on the other side of the first guide pipe. A second guide pipe is arranged at the bottom end of the condenser, a liquid collecting box is arranged at the bottom end of the second guide pipe, a liquid outlet pipe is arranged on one side of the liquid collecting box, and a preheating box is arranged on one side of the distillation box. The steam inlet pipe is arranged on one side of the high-temperature steam box and connected with the steam cavity, the heating time of liquid in the distillation box is shortened through double heating of high-temperature steam and the heating plate, meanwhile,