CO2 capture using EGHE-based water-lean solvents with novel water balance design

Solubility of N2O and CO2 in Dimethyl Sulfoxide, 2-(Butylamino)ethanol, and Their Water-Lean Blends

“…Recently, nonaqueous/water-lean amine absorbents have shown superlow regeneration heat duty for postcombustion CO 2 capture. − More specifically, water-lean monophasic solution of BAE/DMSO/H 2 O was considered as a promising energy-efficient absorbent in a conventional capture process without major modifications . About 50% reduction in regeneration energy was observed for this absorbent with a water content of less than 10 mass %, compared with the benchmark aqueous 30% MEA.…”

Measurement and Modeling of Thermophysical Properties of the Ternary System 2-(Butylamino)ethanol + Dimethyl Sulfoxide + Water and Its Binary Subsystems

“…Aqueous monoethanolamine (MEA), as the first generation of amine-based absorbents, has limitations to large-scale implementation mainly due to its high energy consumption and serious degradation . Some researchers have proposed water-lean amines/amino acid salts using organic solvents to partially replace water. − These absorbents have shown many unique physicochemical properties due to the low water content in the environment of solvents. In recent years, water-lean binary/ternary systems have been proven to reduce the regeneration energy consumption significantly. − Among the reported amines, secondary alkanolamines like 2-(butylamino)ethanol (BAE) present better features such as high reactivity, cycling capacity and stability, and lower reaction heat. − Recently, blending secondary alkanolamines with water-lean dimethyl sulfoxide (DMSO) is a promising candidate system for efficient CO 2 capture. , However, data on the thermophysical properties of these water-lean ternary systems are scarce in the open literature.…”