• Carnal, Amanda
• Maeder, Marcel
• Richner, Gilles

Abstract

Carbon dioxide (CO2) post combustion capture and storage is the most mature technology option for the mitigation of CO2 emissions from fossil fuel electricity generation. Typically CO2 separation is achieved by reactive chemical absorption using aqueous amines. As a consequence there is significant imperative to find amines that give overall better capture performance to lower the capital and operating cost barriers to this technology. In this work benzylamine (BZA) has been assessed in terms of the chemical and physical properties relevant for its application as an aqueous amine CO2 absorbent, both in its own right and in an amine formulation. BZA was found to have similar reaction kinetics with CO2 to monoethanolamine (MEA) but improved thermodynamic performance.It was also found to be less corrosive and have lower viscosity and heat capacity. Additional performance gains were also found by using BZA in a formulation with either MEA or 2-amino-2-methyl-1-proponal (AMP) with predicted significant benefits in terms of reduced reboiler duty, while maintaining good mass transfer and low corrosion potential.

Topics

• impedance spectroscopy
• Carbon
• corrosion
• reactive
• laser emission spectroscopy
• viscosity
• combustion
• amine
• heat capacity