CO2 Absorption Efficiency and Heat Consumption Measured at High Gas to Liquid Ratios in Laboratory Rig

Abstract

A laboratory rig for CO2 absorption into amine solvents including desorption has been in operation at University College of Southeast Norway for several years. Measurements of CO2 removal efficiency and heat consumption at different process conditions and varied gas concentrations, gas flows and liquid flows have been performed. In earlier work, the gas to liquid ratio has been lower than in a normal large-scale absorption column to achieve high CO2 removal efficiencies, and the heat consumption has been very high. In this work, experiments with a higher gas to liquid ratio have been performed to reduce the heat consumption per kg CO2 removed.