Experimental Studies of Regeneration Heat Duty for CO2 Desorption from Aqueous DETA Solution in a Randomly Packed Column

摘要

The regeneration heat duty (Q_(reg), kJ/kg CO2) is a critical parameter in post-combustion CO2 capture using a chemical solvent. In this study, the Q_(reg) of CO2 desorption from CO2 rich diethylenetriamine (DETA) solutions were experimentally evaluated in a bench-scale stripper column as a function of CO2 lean loading, solvent flow rate and CO2 rich loading. It was found that the Q_(reg) was greatly influenced by all the three operating parameters. In addition, a comparison of the regeneration performance between DETA and monoethanolamine (MEA) was performed to evaluate the potential for DETA's application in the CO2 capture process. The results obtained in this work showed that for the regeneration at the same CO2 cyclic capacity, the regeneration heat duty of DETA was lower than that of MEA.