NOVEL DIAMINE SOLVENT SYSTEM FOR CO2 CAPTURE (iEdison No. 0685901-18-0018)

Patent ID: 10763 | Status: Filed

Abstract

We have developed a novel solvent system comprising of diamine molecules and ether functionality that have the lowest CO2rich viscosity of any known concentrated amine based capture solvents. Additionally, these solvents do not undergo hydrolysis and disproportionation like closely related aminosilicone General Electric (GE)solvents. Most amine-based capture solvents require co-solvent in order to lower viscosity or dissolve solid carbamates formed upon CO2 capture, this invention eliminates the need for co-solvents. These diamine solvents developed at PNNL in collaboration with GE have shown CO2-rich viscosity of 43 cP at 50 mol% loading. The diamine solvent has shown good recyclability over five CO2addition and stripping cycles and thermal stability, which makes it good candidate for keeping overall solvent costs low.

Application Number

18/353,338

Inventors

Glezakou,Vanda
Rousseau,Roger J
Cantu Cantu,David
Nguyen,Manh Thuong
Malhotra,Deepika
Koech,Phillip K
Heldebrant,David J

Market Sector

Materials
Chemistry and Catalysts