| 摘要 |
A multifunctional continuous phase transition extraction apparatus comprises an extraction system, a desorption system and a solvent recovery system. The extraction system comprises a first heat exchanger (8 I) and an extraction tank (1). The desorption system comprises a second heat exchanger (8 II), a first desorption tank (2 I), a second desorption tank (2 II), a first purification column (3 I) and a second purification column (3 II). The solvent recovery system comprises a first condenser (4 I), a second condenser (4 II), a first solvent tank (5 I) and a second solvent tank (5 II). Two extraction loops can be formed in the present invention. During the overall extraction process, the phase transition process of the extracting agent is real-time and continuous. The extracting agent goes through continuous phase-transitions and is cyclically re-used, and can extract the target object to a maximum degree, with the efficiency being very high; and the amount of the solvent used is low. The overall process is operated in an airtight and low-pressure condition, and is multifunctional, safe, reliable, and suitable for the extraction for most natural products. |
