Abstract
The viscosities of carbonated N-methyldiethanolamine (MDEA)–diethanolamine (DEA) aqueous solutions were measured by using a NDJ-1 rotational viscometer, with the temperature, mass fraction of amines and CO2 loading respectively ranging from 293.15K to 343.15K, 0.2 to 0.5 and 0.25 to 0.5. A modified Grunberg–Nissan equation was proposed for the correlation and prediction of the viscosities. The effects of temperature, amine concentration and CO2 loading on the viscosities of carbonated MDEA–DEA aqueous solutions were demonstrated on the basis of experiments and calculations.
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