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Sorption of methane and ethane high-molecular tars at supercritical temperatures in the Henry region |
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| Authors: | A. N. Dmitrievskii N. A. Skibitskaya A. N. Vul’fson L. A. Zekel A. A. Pribylov |
| Affiliation: | (1) Institute of Oil and Gas Problems, Russian Academy of Sciences, ul. Gubkina 3, Moscow, 119991, Russia;(2) Federal State Unitary Enterprise “Institute of Fossil Fuel: Scientific and Research Center on Solid Fossil Fuel Complex Processing”, Leninskii pr. 29, Moscow, 117910, Russia;(3) Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117071, Russia |
| Abstract: | A theoretical and experimental study of the absorption of methane and ethane by high-molecular tars occurring in oil-gas-condensate deposits is carried out. An original approach to determining the physicochemical parameters of high-molecular tars and to constructing isotherms of absorption of the main components of natural gas by such tars was proposed. The model of the process was developed by analogy with the theory of dissolution of gases in liquids. The sorption of gases by the tar at supercritical temperatures was described within the framework of the van’t Hoff theory of dilute solutions. The proposed approach made it possible to develop a new effective thermodynamic method for calculating the solubility of the component of natural gas in tar at supercritical temperatures and pressure typical of the conditions of natural gas recovery. |
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