Volume 20: Sustainable Energy Solutions for a Post-COVID Recovery towards a Better Future: Part III

Influence of Sand Particle Size on the Kinetics of CO2 Hydrate Formation in a Pilot Scale Reactor Ayaj Ahamad Ansari, Randeep Ravesh, Pradipta Kumar Panigrahi, Malay Kumar Das

Abstract

CO2 storage in the reservoir is the most common method to mitigate global warming. In this work, the influence of sand particle size on the CO2 hydrate formation kinetics has been investigated in a pilot-scale reactor (25 L) at three different sand particle sizes (300-500 µm, 500-710 µm, and 710-1000 µm). The experiments are carried out at 275.15 K temperature and initial pressure of 3.5 MPa. The parameter studied in the present work are induction time, amount of gas consumption during hydrate formation, water to hydrate conversion, and hydrate saturation. It is observed that the induction time is lowest for the smaller sand particle size. Gas consumption, water to hydrate conversion, and hydrate saturation are higher for smaller sand particle sizes. The results show that smaller sand particle size enhances the hydrate formation kinetics. The present study can be helpful in selecting a suitable reservoir for CO2 sequestration via hydrate formation.

Keywords Sand particles, Porous media, Gas hydrate, Induction time, Hydrate formation