Effect of changes of physical properties on CO2 capture solvents on its absorption rate

Conference · Wed Aug 19 04:00:00 EDT 2020

DOI:https://doi.org/10.2172/1732159· OSTI ID:1732159

Sarma, Moushumi ^[1]; Abad, Keemia ^[2]; Thompson, Jesse ^[2]; Liu, Kunlei ^[3]

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1. University of Kentucky Center for Applied Energy Research; University of Kentucky Center for Applied Energy Research
2. University of Kentucky Center for Applied Energy Research; University of Kentucky Department of Chemistry
3. University of Kentucky Center for Applied Energy Research; University of Kentucky Department of Mechanical Engineering

Concern over greenhouse gas emissions, such as CO2 from fossil fuel combustion, is leading to new regulations on fossil-fuel fired power generation facilities. Using amine-based solutions for CO2 capture in power plants is the most common method utilized industrially and studied in the laboratory environment. However, a limited number of amines are available for carbon capture research after balancing the capital cost and energy penalty. In the carbon capture process, physical properties such as viscosity, surface tension, wettability, etc. are found to play important roles in solvent performance. In this context, we are exploring an approach to enhance the CO2 capture of amine solvents by tuning the physical properties of the amine solvents by the addition of additives. These additives in the amine solution utilize controlled bubble generation to increase liquid-gas contact surface area. This method can increase mass transfer in the absorber column, specifically at the bottom where the mass transfer is limited. These additives can enhance the CO2 capture efficiency by changing the physical property of the solvent which in turn can lower the capital cost associated with the system. This work can be applied to all common aqueous amine solvent and would be of great interest to those in the CCS community.

• Research Organization: University of Kentucku Center for Applied Energy Research
• Sponsoring Organization: USDOE Office of Fossil Energy (FE)
• DOE Contract Number: FE0031661
• OSTI ID: 1732159
• Report Number(s): DOE-UKCAER-31661-1
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
CO2 capture
amine solvents