AUTOMATION METHOD FOR SOLVENT EXTRACTION AND AUTOMATIC SOLVENT EXTRACTION DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an automatic solvent extraction method and device capable of continuously separating and stably pulling out an aqueous phase, an intermediate phase, and an organic phase of a solution.;SOLUTION: The automatic solvent extraction method is characterized by that an aqueous phase, an intermediate phase, and an organic phase of a solution are continuously separated and pulled out by continuously measuring the light transmission of the solution passing through a liquid discharge pipe of a solvent extraction vessel, detecting a phase change using the light transmission, and automatically opening/closing the liquid discharge pipe in accordance with the change of the light transmission. The automatic solvent extraction device is equipped with a solvent extraction vessel, a liquid discharge pipe connected to the bottom part of the solvent extraction vessel, a light sensor means for measuring the transmission of a solution flowing down through the liquid discharge pipe, an automatic opening/closing valve for opening/closing the liquid discharge pipe, a liquid receiving vessel connected to the valve, and a control system which sends an opening/closing signal to the valve on the basis of the measured value obtained with the light sensor means.;COPYRIGHT: (C)2005,JPO&NCIPI