Measurement of Mass Transfer Coefficient of CO2-Amine System from Absorption Process

Abstract

Carbon dioxide (CO2) is one of the main factors for climate change issues. Absorption is the technology to remove CO2 from various industries. The equipment used is the packed column to promote high mass transfer rate and to study the overall mass transfer coefficient (KGav). The KGav is an important parameter for designing and scaling up of packed column. Therefore, the objective of this work is to measure KGav for CO2 absorption into the aqueous solution of monoethanolamine (MEA) in a random-packed column and to investigate effect of parameters on KGav. The parameters are the solvent flow rate from 5.3-15.9 m3/m2h, CO2 initial loading from 0.0-0.2 mole/mole and CO2 content in gas phase from 5-15 %v/v. The results show that KGav increases as the solvent flow rate and solvent concentration increase. The CO2 content in gas phase provides relatively high impact on KGav with an increase in the CO2 content.