PROCESS FOR FLUID/DENSE GAS EXTRACTION UNDER ENHANCED SOLUBILITY CONDITIONS

摘要

A LIQUID/DENSE GAS EXTRACTION COLUMN PROCESS PROVIDING INTIMATE CONTACT BETWEEN A DENSE GAS AND A FLUID FEED CONTAINING A SOLUTE AND OPERATING IN AN ENHANCED SOLUBILITY REGION PROVIDES SOLUBILITY OF A SOLUTE IN THE DENSE GAS TO BE AT LEAST 250BY WEIGHT GREATER THAN THE SOLUBILITY OF THE SOLUTE IN THE DENSE GAS AT THE SAME OPERATING TEMPERATURE AND 200 X 105 PA (200 BAR) PRESSURE. THE ENHANCED SOLUBILITY REGION FOR CARBON DIOXIDE IS A PRESSURE RANGE OF BETWEEN 450 X 105 AND 1200 X 105 PA (450 AND 1200 BAR) IN COMBINATION WITH A TEMPERATURE RANGE BETWEEN 50 AND 300°C. THE COLUMN HAS A DIAMETER GREATER THAN ABOUT 3.5 CENTIMETERS AND A HEIGHT TO DIAMETER RATIO GREATER THAN ABOUT 5.