Evaluation of various types equations of state for prediction of rate of hydrate formation based on Kashchiev and Firoozabadi model in the presence or absence of kinetic hydrate inhibitors for gasous mixtures in a recirculating systems

Evaluation of various types equations of state for prediction of rate of hydrate formation based on Kashchiev and Firoozabadi model in the presence or absence of kinetic hydrate inhibitors for gasous mixtures in a recirculating systems

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Part of #Evaluation of various types equations of state for prediction of rate of hydrate formation based on Kashchiev and Firoozabadi model in the presence or absence of kinetic hydrate inhibitors for gasous mixtures in a recirculating systems# :

Publishing year : 2013

Conference : Second National Conference on Iranian Gas Hydrate

Number of pages : 11

Abstract: This paper compares the effects of using various types of equations of state such as Peng Rabinson (PR), Predictive Soave Ridlich Kowng (PSRK), Benedict-Webb-Rubin-Starling (BWRS), Nasrifar-Boland (NB), And Valderrama -Patel -Tea (VPT) is the rate of double gas hydrate formation based on the Kashchiev and Firoozabadi model for gaseous mixtures such as 65% C1 / 35% C3, 35% C1 / 65% C3, 65% C1 / 35% I-C4, 35% C1 / 65% i-C4 with experimental data points obtained in a flow mini-loop apparatus with or without the presence of kinetic inhibitors at various pressures and specified temperature. For the prediction of the gas consumption rate for a double gas hydrate formation in a flow mini-loop device, the rate equation was developed based on the Kashchiev and Firoozabadi model for simple gas hydrate formation in bench scale. The TAAD% was found to be 18.6%, 18.8%, 19.8%, 20.2% and 20.7% for the PR, NB, PSRK, VPT and BWRS equations of state for calculating gas consumption in double gas hydrate formation in presence and absence of Kinetic hydrate inhibitors, respectively. Comparison results between the calculated and experimental data points of gas consumption indicate that the PR and NB equations of state have lower errors than the PSRK, VPT and BWRS equations of state for this model.