Heat exchange recovery device for organic low-boiling-point substances

The utility model discloses a heat exchange recovery device for organic low-boiling-point substances, which comprises two vertical shell-and-tube heat exchangers connected in parallel; inlets of the waste residue collecting tanks are respectively connected with bottom outlets of the corresponding tubular heat exchangers through discharge pipes; an inlet of the pre-pump buffer tank is connected with a top exhaust port of the corresponding shell-and-tube heat exchanger, and an outlet is connected with an inlet of the vacuum pump; the two discharge pipes are respectively connected with an ethanol discharge pipe through a tee joint, and the two ethanol discharge pipes are respectively provided with a pneumatic switch valve; outlets of the two pneumatic switch valves are respectively connected with an inlet of an ethylene glycol collecting tank, an outlet of the ethylene glycol collecting tank is connected with an inlet of a basket filter, an outlet of the basket filter is connected with an inlet of an ethylene gl