Carbon dioxide supercritical fluid extraction system with heat recovery function

The invention relates to the field of heat recovery of refrigerants, particularly to a carbon dioxide supercritical fluid extraction system with a heat recovery function. The system comprises a carbondioxide supercritical fluid extraction component and a cold-and-heat supplying component, wherein the cold-and-heat supplying component comprises a heat-recovering cold water unit, and the evaporation side and the condensation side of the heat-recovering cold water unit respectively provide cold and heat to the carbon dioxide supercritical fluid extraction component. The carbon dioxide supercritical fluid extraction system of the invention has the advantages that the cold at the evaporation side of the cold-and-heat supplying component is used for cooling and liquefying carbon dioxide in theprocess flow of supercritical carbon dioxide extraction, and the condensation heat at the condensation side of the cold water unit is recovered so as to realize the separation of the carbon dioxide and an extract; so energy co