Flue Gas Hydrate Storage, Self-Preservation and Dissociation in Unconsolidated Porous Medium in the Presence of Environment-Friendly Promoters

Description

CO2 capture and storage in the unconsolidated porous medium were studied in the presence of four bio-friendly amino acids. Constant Ramping and Isothermal experiments were performed at 120 initial bar pressure and 1°C to study the kinetics of hydrate formation. The effect of amino acid hydrophobicity, change in sand particle size (1.4 mm -5 mm to 160-630 µm), and change in CO2 mole concentration (20% to 30%) in feed gas (CO2-N2) mixture was investigated. Based on kinetic parameters (e.g., induction time, CO2 gas uptake), amino acids were classified to compare promotion capabilities during CO2 hydrate formation. Amino acid behaviour was also compared with water and a surfactant, sodium dodecyl sulfate (500-3000ppm). We report higher CO2 recovery and lower induction time for hydrophobic amino acids and SDS (2000 and 3000 ppm). We have also studied the effect of promoter concentration on the kinetics of formation in unconsolidated sand and the effect of sand particle size at various concentrations. This investigation discusses the key advantages of using promoters along with porous medium during CO2 capture and storage from CO2 rich feed gas. This research calls to attention the potential use of bio-friendly amino acids for the application of CO2 capture and storage.

Period	28 Aug 2020
Event title	InterPore2020 : 12th Annual Meeting & Short Courses
Event type	Conference
Location	Qingdao, ChinaShow on map
Degree of Recognition	International