Probability distributions of gas hydrate formation

Richard Wu, K.A. Kozielski, P.G. Hartley, Eric May, John Boxall, N. Maeda

Research output: Contribution to journalArticlepeer-review

43 Citations (Scopus)


Induction time distributions for gas hydrate formation were measured for gas mixtures of methane+propane at pressures up to 11.3 MPa using a high-pressure automated lag time apparatus (HP-ALTA). Measurements were made at subcooling temperatures between 4.3 and 13.5 K and, while isothermal induction times between 0 and 15,000 s were observed, the median isothermal induction times for the distributions ranged from 100 to 4000 s. A hyperbolic relationship between median induction time and subcooling was used to correlate the data. A graphical interpretation is presented that relates the two types of data that can be acquired by using the HP-ALTA in one of two modes to study hydrate formation: induction time distributions at constant subcooling and formation temperature distributions observed during linear cooling ramps. The equivalence of these two modes provides a robust method for studying the variation of formation phenomena in different hydrate systems. © 2013 American Institute of Chemical Engineers.
Original languageEnglish
Pages (from-to)2640-2646
JournalAIChE Journal
Issue number7
Publication statusPublished - 2013


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