MEMBRANE VACUUM STRIPPING PROCESS FOR THE ENERGY REDUCTION IN CO2 DESORPTION PROCESS USING COMPOSITE TYPE NON-POROUS MEMBRANE

摘要

PURPOSE: A membrane vacuum stripping process for reducing energy in a carbon dioxide absorption process using a non-porous composite membrane is provided to reduce energy consumption of the entire absorption process by lowering operational temperatures. CONSTITUTION: A membrane vacuum stripping process strips carbon dioxide under a decompression condition at 100 deg C or less using a non-porous composite membrane. A manufacturing method of the composite membrane includes the following: a porous polymer is prepared as a support; a non-porous polymer thin film is coated on the support using a casting method. The thickness of the thin film is 4um. The porous polymer is polyethylene, and the non-porous polymer thin film is made of polydimethylsiloxane.