The importance of kinetic hydrate inhibitors is increasing due to its low cost compared to thermodynamic inhibitors and the corresponding benefits for exploitation of small marginal fields. This stimulates further investigations of the primary mechanisms for the induction times before onset of massive hydrate growth. The hypothesis in this work is that combinations of transport rate limitations...

The structure of the carbon dioxide-water interface was analyzed by X-ray diffraction and reflectivity at temperature and pressure conditions which allow the formation of gas hydrate. The water-gaseous CO2 and the water-liquid CO2 interface were examined. The two interfaces show a very different behavior with respect to the formation of gas hydrate. While the liquid-gas interface exhibits the f...

An isobaric flow loop added to the Gas Hydrate And Sediment Test Laboratory Instrument (GHASTLI) is being investigated as a means of rapidly forming methane hydrate in watersaturated sand from methane dissolved in water. Water circulates through a relatively warm source chamber, dissolving granular methane hydrate that was pre-made from seed ice, then enters a colder hydrate growth chamber wher...

Clathrate hydrates are of great importance in many aspects. However, hydrate formation and dissociation mechanisms, essential to all hydrate applications, are still not well understood due to the limitations of experimental techniques capable of providing dynamic and structural information on a molecular level. NMR has been shown to be a powerful tool to noninvasively measure molecular level dy...

One of the important, practical and simple methods for hydrate formation conditionis empirical equations, and so far many empirical equations have been presented to predict thetemperature and pressure of hydrate formation. In this study, the methods and empiricalcorrelations have been reviewed and their predictive capabilities have been evaluated with ...

Abstract In order to explore the kinetic mechanism of hydrate formation in a system containing micron-sized SiO 2 particles, this paper uses high-pressure reactor device with stirring function record changes pressure, temperature and torque during growth hydrates through data acquisition system, based on conservation mass The principle gas equation state calculate parameters such as consumption...

Most resources of natural gas hydrate (NGH) exist in marine sediments where salts and sea mud are involved. It is great importance to investigate the effects on NGH formation kinetics. In this study, mixture silica sand montmorillonite was used mimic mud. The NaCl concentration pore water content methane were studied. A low 0.2 mol/L a range 10–25 wt% beneficial reduce induction time formation....

Hydrate slurry has been reported to be a suitable secondary fluid for refrigeration and air-conditioning systems. The latent heat of CO2 hydrate is 387 kJ/kg under phase equilibrium condition of 7 °C and 30 bar. The utilization of CO2 hydrate slurry in air-conditioning systems is promising in improving the energy efficiency and shifting energy supply and demand load as well as relieving greenho...