Experimental analyses of mass transfer and heat transfer of post-combustion CO2 absorption using hybrid solvent MEA-MeOH in an absorber

摘要

The performance of CO2 absorption into a hybrid solvent such as monoethanolamine (MEA) in methanol (MeOH) was experimentally investigated in a lab-scale absorber packed with Sulzer DX-type structured packing, and compared with that of aqueous MEA solution. The experiments were performed at various key operating conditions over a MEA concentration range of 2.5-5.0 kmol/m~3, a CO2 lean loading range of 0-0.373 mol/mol, a liquid flow rate range of 2.92-16.09 m~3/m~2h, an inert gas flow rate range of 24.37-63.54 kmol/m~2 h, a CO2 partial pressure range of 6.7-13.8 kPa, and an inlet liquid temperature of 10 °C.