Novel pervaporation circulating heat exchange system and method

The invention discloses a novel pervaporation circulating heat exchange system and method, and belongs to the technical field of separation. The separation system utilizes the characteristics of a pervaporation process; a large amount of heat is captured from the raw material solution when phase change occurs in the pervaporation process, so that the temperature of the raw material solution is reduced, and a low-temperature solution on an interception side is suitable for exchanging heat with a high-temperature solution on a raw material side, so as to reduce the damage of some high-temperature solutions entering a membrane component to the membrane component and reduce the performance of the membrane. In the system, the characteristic is utilized to reduce the temperature of the interception side, and the part of low-temperature solution is used as a refrigerant to cool the high-temperature liquid on the raw material side, so that the heat load of cooling the liquid on the raw material side is reduced, and t