Utilizing Theoretical and Experimental Gaseous CO<sub>2</sub> Filling Behavior in Gas Hydrate Formation Parameters

Gas hydrates are increasingly becoming a viable method due to their potential efficiency and minimal energy demands. The capacity to manipulate and regulate the development of these hydrates is essential for enhancing their application in practical contexts. The study employed a VINCI autoclave apparatus to experimentally investigate the CO2 filling rate necessary to attain hydration pressure with minimal temperature increase. MATLAB is used to derive theoretical gas filling equations that control the filling behavior and compare them with the results of our tests. A clear proportional link exists between filling flow rates and temperature increment within the reactor. The simulation effectively identifies values for temperature and pressure in the reactor that are extremely similar to the final measurements, particularly at low flow rates during filling. The optimal CO2 flow rates are subsequently employed to pressurize the reactor for measuring CO2 uptake during the induction period of gas hydrate. The induction time for CO2 hydrate was minimal across all experimental sets with new operation order, where reactor is pressurized then cooled to form hydrate with nucleation commencing in as little as 9 seconds in certain experiments, even prior to the completion of the filling process. The duration of the experiment varies between sets, but all persisted until no liquid water remained in the reactor. The absorption of CO2 has reached 0.127 moles, resulting in a ratio of 1:43.7 moles of CO2 to moles of pure water.