Glycerin triacetate preparation device

The utility model discloses a glycerol triacetate preparation device and belongs to the field of glycerol triacetate preparation. The glycerol triacetate preparation device sequentially comprises an upper box body, a connecting box body and a lower box body from top to bottom, an ultrafiltration membrane is arranged between the upper box body and the connecting box body, and the lower box body is detachably fixed to the lower end of the connecting box body; an upper cover is arranged at the upper end of the upper box body, an air inlet pipe is arranged on the upper cover, and inert gas is filled into the upper box body through the air inlet pipe to apply pressure to the interior; the upper cover is arranged on the lower box body, so that part of impurities of the refined glycerol triacetate penetrate through the ultrafiltration membrane and fall onto the lower box body under the action of air pressure, the purified glycerol triacetate is left at the upper end of the ultrafiltration membrane, and the purified