摘要
在内径为２５ｍｍ的连续逆流超临界流体填料萃取塔中，对超临界ＣＯ２／异而醇／水和超临界ＣＯ２／乙醇／水两体系的流体力学特性进行了实验研究．实验用填料为金属板彼和金属丝网０环填料，实验压力为８～１５ＭＰａ，温度为３５℃．测定了塔内超临界流体相存留分数及流滴尺寸，并得到超临界流满直径服从正态分布的规律．
A supcrcritical fluid extraction packed column filled with structured packings and θ metal rings was set up. Two supercritical systems, carbon dioxide/isopropanol/water, and carbon dioxide/ethanol/water were tested at temperature 35℃, up to pressures & to 15 MPa. Supercritical fluid phase hold-up and fluid drop size distributions were measured. The supercritical fluid drop size distributions were in conformity with normal distribution.
基金
国家自然科学基金
关键词
超临界流体
萃取
填料塔
流体力学
hydrodynamics characteristics
supcrcritical fluid
extraction
packed columns
fluid drop size distribution
