Device for separating methanol from heat-sensitive product in alcoholysis intermediate production process

The utility model discloses a device for separating methanol from a heat-sensitive product in an alcoholysis intermediate production process, which comprises a three-stage flash evaporation structure formed by a high-pressure flash evaporation unit, a low-pressure flash evaporation unit, a vacuum flash evaporation unit and a vacuum unit, and each flash evaporation unit comprises a flash evaporation tank, a heat exchanger, a flash evaporation condenser and a pressure control valve. According to the utility model, through the arrangement of high-pressure flash evaporation and one-time heating reduced-pressure flash evaporation to a vacuum state, effective separation of methanol meeting process requirements is realized, and the problem that thermosensitive products in heavy components are easy to deteriorate when methanol is separated by a rectifying tower is solved; and long-time continuous and stable operation of heat-sensitive product-containing material liquid separation in the alcoholysis intermediate produ