New Amine based DES’s SOlvent development for CO2 capture in a demonstrative pilot Installation by Chemical Absorption Technology – ASOCIAT

The general objective of the project is to increase the performances of the chemical solvents used in the chemical absorption technology in order to reduce negative effects (efficiency penalty, higher CAPEX and OPEX cost) of its integration in industrial or energy processes. The solution proposed consists in preparing amine-DES hybrid solvents in order to reduce the disadvantages encountered with amine-based chemical solvents, while preserving their high absorption capacity by using deep eutectic solvents (DES). The DES’s is a blended solvent comprised of two or more elements that form a eutectic with a lower melting point than that of the individual elements. High purity of each DES can be easily developed using biodegradable resources at low cost. However, on a mass basis, the solubility of CO2 in DES is still significantly lower than that of MEA (ethanolamine) 30 wt. %, by an order of magnitude, due of the higher molecular weight of DES. The other disadvantages of DES for CO2 capture processes are their very high viscosity, low absorption rates, and high solvent cost compared to chemical solvents.