Purification of the Synthesis Product of Salicylic Acid by means of Supercritical Carbon Dioxide

摘要

Purification of salicylic acid synthesis product is carried out on fluid flow extraction device. Investigation of salicylic acid solubility on the isotherms 308 and 323 K in the range of pressures 9-33 MPa, and of phenol under temperatures of 308 K and 311 K was also conducted. The range of extragent flow rates was estimated, under which salicylic acid equilibrium concentration is reached in supercritical CO_2.