271960 Equilibrium Conditions of Hydrate-Forming Pickering Emulsions

Monday, October 29, 2012
Hall B (Convention Center )
Christopher Hassan, Chemical Engineering, CCNY, New York, NY and Jae W. Lee, Department of Chemical Engineering, The City College of New York, New York, NY

Cyclopentane (CP), water, and hydrophobicized silica nanoparticles, when homogenized, form stable water-in-oil (W/O) emulsions. However, there are no available data regarding the phase equilibrium conditions of CP + H2O hydrates in the presence of nano-particles, which is crucial to developing models with which to accurately predict the formation of hydrates in deep-sea oil pipelines if combined with high-pressure gas hydrate formers (methane, ethane, propane, etc.) such as what occurred during the BP oil spill. In this presentation, the dissociation temperatures of CP + H2O hydrates at atmospheric pressure (101.325 kPa) will be determined for particle concentrations ranging from (0.5 to 7.5) weight percent of cyclopentane using a Micro-DSC. Emulsion droplet size distribution analyses were performed using an optical microscope. Also, the combined surface-active agent and particle system will be used to understand the equilibrium change from the bulk phase CP hydrates as a model system for hydrate formation in crude oil and gas pipelines.

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