Russian Federation
Russian Federation
Russian Federation
Problems arising when using Soave-Redlich-Kwong equation and initial Redlich-Kwong equation in the process of numerical modeling are analyzed. The possibility of using a simpler two-consonant Peng-Robinson equation in the modeling process was evaluated, which at the same time will allow to obtain better results than using the Soave-Redlich-Kwong equation. An algorithm for calculating the parameters of the state of the hydrocarbon mixture has been formed. The software implementation of the algorithm is made in the form of a Basic macro, using the LibreOffice Calc tabular processor interface, compatible with the Astpa Linux operating system. Comparison of the results of modeling the state of vapor-liquid equilibrium of a hydrocarbon mixture with experimental data allows us to conclude that the solutions are adequate in the formation of the corresponding mathematical model.
hydrocarbon mixtures, Peng-Robinson equations of state, conditions of vapor-liquid cavity
1. Timoshenko A.L., Samigullin G.Kh., Rebezov S.A. Svedeniya po chastotam realizacii avarijnykh sobytij na ob"ektakh proizvodstva i obrashcheniya vodoroda // Problemy upravleniya riskami v tekhnosfere. 2024. №. 2 (70). S. 127–139. DOI:https://doi.org/10.61260/1998-8990-2024-2-127-139.
2. Krasil'nikov A.V., Bel'shina Yu.N., Krutolapov A.S. Metodika parofaznogo analiza goryuchikh zhidkostej pri issledovanii avarijnykh pozharoopasnykh situacij na ob"ektakh neftegazovogo kompleksa // Problemy upravleniya riskami v tekhnosfere. 2018. № 3 (47). S. 13–19. EDN VKIKPF.
3. Metody i sredstva informacionno-operacionnoj podderzhki teplotekhnicheskikh raschetov v reshenii zadach pozharnoj bezopasnosti: monografiya / A.A. Kuz'min [i dr.]; pod red. A.S. Smirnova. SPb.: S.-Peterb. un-t GPS MCHS Rossii, 2023. 196 s.
4. Redlich O., Kwong J.N.S., Chem Rev. On the Thermodynamics of Solutions. V. An Equation of State. Fugacities of Gaseous Solutions // Chemical Reviews. 1949. № 44 (1). R. 233–244. DOI:https://doi.org/10.1021/cr60137a013.
5. Kuz'min A.A., Romanov N.N., Permyakov A.A. Fazovoe ravnovesie v gazozhidkostnykh uglevodorodnykh soedineniyakh // Problemy upravleniya riskami v tekhnosfere. 2021. № 1 (57). S. 136–142. EDN IDIYKY.
6. Tsonopoulos C., Prausnitz J.M. Fugacity coefficients in vapor-phase mixtures of water and carboxylic acids // The Chemical Engineering Journal. 1970. № 1 (4). R. 273–278. DOI:https://doi.org/10.1016/0300-9467(70)85014-6.
7. Soave G. Equilibrium Constant from a modified Redlich-Kwong Equation of State. Chem. Eng. Sci. 1972. 27. R. 1197–1203.
8. Krupnikov V.I., Shalaj V.V. Modelirovanie zakrytoj neizolirovannoj sistemy «Szhizhennyj prirodnyj gaz-prirodnyj gaz» // Rossiya molodaya: peredovye tekhnologii – v promyshlennost'. 2017. № 1. S. 41–47. EDN YMFSFP.
9. Starling K.E. Fluid Thermodynamic Properties for Light Petroleum Systems, Gulf Publishing Co., Houston, Texas, 1973.
10. Peng, D.-Y., Robinson D.B. A New Two-Constant Equation of State // Industrial & Engineering Chemistry Fundamentals. 1976. Vol. 15. № 1. P. 59–64.
11. Llave F.M., Luks K.D., Kohn J.P. Three-phase liquid-liquid-vapor equilibria in the binary systems nitrogen ethane and nitrogen propane // J. Chem. Eng. Data. 1985. 30, 4. P. 435–438.
12. Reamer H.H., Sage B.H. Phase Behavior in the Nitrogen-Ammonia System // Journal of Chemical & Engineering Data. 1959. № 4 (4). R. 303–305. DOI:https://doi.org/10.1021/je60004a005.
13. Fedorova E.B., Mel'nikov V.B. Osobennosti fazovogo ravnovesiya smesej legkikh s azotom // Trudy RGU nefti i gaza (RIU) im. I.M. Gubkina. 2018. № 2 (291). S. 36–39. EDN THVQAL.
