Effect of various types of equations of state for prediction of gas consumption in simple gas hydrate formation with or without presence of kinetic inhibitors in a flow mini-loop apparatus
Publish place: 06th International Congress on Chemical Engineering
Publish Year: 1388
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC06_092
تاریخ نمایه سازی: 1 مهر 1388
Abstract:
This paper compares the effects of using various types of equations of state (1PR, 2SRK, 3ER, 4PT and 5VPT) on the calculated driving force and rate of gas consumption based on the Kashchiev and Firoozabadi model in simple gas hydrate formation for methane, carbon dioxide, propane and iso- butane with experimental data points obtained in a flow mini-loop apparatus with or without the presence of kinetic inhibitors at various pressures and temperatures. For this purpose, a laboratory flow mini-loop apparatus was set up to measure gas consumption rate when a hydrate forming substance (such as C1, C3, CO2 and i-C4) is contacted with water in the absence or presence of dissolved inhibitorunder suitable temperature and pressure conditions. In each experiment, a water blend saturated with pure gas is circulated up to a required pressure. Pressure is maintained at a constant value during experimental runs by means of the required gas make-up. The total average absolute deviation was found to be 15.4 %, 16.3 %, 15.8%, 17.8% and 17.4% for the PR, ER, SRK, VPT and PT equations of state for calculating gas consumption in simple gas hydrate formation presence and absence of kinetic hydrate inhibitors, respectively.
Keywords:
gas consumption rate , inhibitors , equation of state , Kashchiev and Firoozabadi model , driving force , flow mini-loop apparatus
Authors
M .R Talaghat
Fars Technological and Environmental Research Center, Shiraz, Iran.
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