Modification of Katz diagrams in allowable pressure drop across a throttle valve for avoiding gas hydrate formation

Mohamadmostafa Owji, Jafar Javanmardi, Aliakbar Roosta, Bahman Tohidi Kalorazi

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Abstract

One of the first and easiest ways to determine the equilibrium conditions of hydrate formation for gas mixtures is gas gravity method presented by Katz. In addition, based on this fact that pressure depression in a throttle valve is a constant enthalpy process and so the temperature decreases when the pressure of the natural gas decreases, Katz presented a series of curves to estimate the maximum allowable pressure drop before gas hydrate formation.
In this communication, the van der Waals and Platteeuw solid solution theory has been used for predicting of hydrate formation conditions. Moreover, using the Peng Robinson equation of state to predict the enthalpy of natural gas in the inlet and outlet streams of throttling valve, the maximum allowable pressure drop curves, have been reproduced. Finally, results of this work have been compared with the Katz curves for maximum allowable pressure drop.
Original languageEnglish
Pages210-212
Number of pages3
Publication statusPublished - 13 Sep 2016
Event19th Iranian Physical Chemistry Conference 2016 - Gilan University, Rasht, Iran, Islamic Republic of
Duration: 13 Sep 201615 Sep 2016
Conference number: 19
http://www.peybordco.com/News/newsid/22

Conference

Conference19th Iranian Physical Chemistry Conference 2016
Abbreviated titleIPCC
CountryIran, Islamic Republic of
CityRasht
Period13/09/1615/09/16
Internet address

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    Owji, M., Javanmardi, J., Roosta, A., & Tohidi Kalorazi, B. (2016). Modification of Katz diagrams in allowable pressure drop across a throttle valve for avoiding gas hydrate formation. 210-212. Paper presented at 19th Iranian Physical Chemistry Conference 2016, Rasht, Iran, Islamic Republic of.