PROCESS FOR MANUFACTURING A CYCLIC UREA ADDUCT OF AN ETHYLENEAMINE COMPOUND

A process is provided for manufacturing a cyclic urea adduct of an ethyleneamine compound, the ethyleneamine compound having a linear -NH-CH2-CH2-NH- group. The process includes, in an absorption step, contacting a liquid medium comprising an ethyleneamine compound having a linear -NH-CH2-CH2-NH- group with a CO2-containing gas stream at a pressure of from about 1 to about 20 bara, resulting in the formation of a liquid medium into which CO2 has been absorbed. The process further includes bringing the liquid medium to cyclic urea formation conditions, and, in an urea formation step, forming cyclic urea adduct of the ethyleneamine compound, urea formation conditions including a temperature of at least about 120° C., wherein the total pressure at the end of the urea formation step is at most about 20 bara, and wherein the temperature in the absorption step is lower than the temperature in the urea formation step.