Kinetic and Performance Assessment of Hydrate-Based Precombustion CO2 Capture Using Dry Water

Abstract

The performance of dry water as a porous medium in a fixed bed reactor for hydrate-based precombustion carbon capture was assessed. Experiments conducted at 9.0 MPa and 273.9 K in both stirred tank and fixed bed reactors proved that dry water performs more effectively in the fixed bed reactor compared with the stirred tank reactor. To further assess the performance of dry water, kinetic experiments were performed across three different pressures at 273.9 K as well as at 275.1 K for two pressures (9 and 8.5 MPa). From the results, it is evident that both the experimental pressure and temperature significantly influenced the kinetics. A comparison with available literature data revealed that dry water outperformed the stirred tank reactor and fixed bed reactor with both silica sand and silica gel under similar experimental conditions. Dry water has the potential to be an excellent medium in a fixed bed reactor for CO₂ capture.