Numerical simulations of CO2-hydrate formation in laboratory-scale sand sediment.

Autor: Takahashi, Tomoki, Sato, Toru, Inui, Masayuki
Zdroj: 2012 Oceans - Yeosu; 1/ 1/2012, p1-6, 6p
Abstrakt: CO2 capture and storage is one of the effective countermeasures against global warming and sub-seabed geological storage of CO2 in the form of gas hydrate is an attractive option for CCS because gas hydrate can stably exit in low-temperature and high-pressure condition and the risk of CO2 leakage may be lower than the other CCS methods. For the effective design of storage system, it is necessary to model the formation of CO2-hydrate. In this study, a CO2-hydrate formation model in porous media was proposed and applied to two different types of formation — one is the hydrate formation in sand sediment without flow and the other is that in gas-water two-phase flow in sand sediment. Numerical studies, which simulated the experimental conditions of previous study, were conducted and formation behaviors of CO2-hydrate in sand sediment were revealed. [ABSTRACT FROM PUBLISHER]
Databáze: Complementary Index