Experimental method for simultaneous and continuous measurement of absorption rate, viscosity and heat of reaction of carbon dioxide capture solvents

Abstract

When screening solvents for carbon capture, a large amount of property data for each solvent in the CO2-loaded state is required. In this paper, a novel experimental method is proposed that involves modifying a wetted wall column in order to simultaneously measure the absorption rate, viscosity, pH, and heat of reaction of carbon capture solvents while the CO2 loading is increased continuously. The proposed method was applied to 30wt% aqueous monoethanolamine and 30wt% aqueous piperazine as solvents and found to produce measurement results that matched well with literature data.