Mathematical modeling of the phase state of natural gas
Jazyk: | ruština |
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Rok vydání: | 2022 |
Předmět: | |
DOI: | 10.18720/spbpu/3/2022/vr/vr22-1013 |
Popis: | Тема вÑпÑÑкной квалиÑикаÑионной ÑабоÑÑ: «ÐаÑемаÑиÑеÑкое моделиÑование Ñазового ÑоÑÑоÑÐ½Ð¸Ñ Ð¿ÑиÑодного газа». ÐÐ°Ð½Ð½Ð°Ñ ÑабоÑа поÑвÑÑена моделиÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð°ÑожидкоÑÑного ÑавновеÑÐ¸Ñ Ð¿ÑиÑодного газа, извлекаемого из ÐÑимовÑÐºÐ¸Ñ Ð·Ð°Ð»ÐµÐ¶ÐµÐ¹ УÑенгойÑкого меÑÑоÑождениÑ. СоÑÑав газовой ÑмеÑи: CH4 (80.324%), C2H6 (6.024%), C3H8 (3.066%), nC5H12 (4.381%), nC7H16 (3.108%), nC10H22 (2.431%), N2 (0.0478%), CO2 (0.0188%). ТеÑмобаÑиÑеÑкие ÑÑÐ»Ð¾Ð²Ð¸Ñ Ð´Ð»Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑооÑвеÑÑÑвовали пÑоÑеÑÑÑ ÑÑанÑпоÑÑиÑовки газа. ÐадаÑи, коÑоÑÑе ÑеÑалиÑÑ Ð² Ñ Ð¾Ð´Ðµ иÑÑледованиÑ: ÐзÑÑиÑÑ Ð¾ÑновнÑе Ð²Ð¸Ð´Ñ ÑÑавнений, позволÑÑÑие опиÑÑваÑÑ Ñазовое ÑавновеÑие многокомпоненÑнÑÑ ÑмеÑей. ÐÑоанализиÑоваÑÑ Ð¸Ð¼ÐµÑÑиеÑÑ ÑабоÑÑ Ð¿Ð¾ данной ÑемаÑике. ÐÑбÑаÑÑ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ ÑоÑÑоÑниÑ, Ð¿Ð¾Ð´Ñ Ð¾Ð´ÑÑие Ð´Ð»Ñ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ñ Ñазового ÑавновеÑÐ¸Ñ Ð³Ð°Ð·Ð¾Ð²Ð¾Ð¹ ÑмеÑи, иÑÑледÑемой в данной ÑабоÑе. СоздаÑÑ Ð¼Ð°ÑемаÑиÑеÑкÑÑ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð´Ð»Ñ ÑаÑÑеÑа двÑÑ Ñазного ÑавновеÑÐ¸Ñ ÑмеÑи заданного ÑоÑÑава. СделаÑÑ Ð²ÐµÑиÑикаÑÐ¸Ñ Ð¿Ð¾Ð»ÑÑеннÑÑ ÑезÑлÑÑаÑов Ñ ÑкÑпеÑименÑалÑнÑми даннÑми. Ð ÑезÑлÑÑаÑе на оÑнове обзоÑа и анализа бÑли вÑбÑÐ°Ð½Ñ ÐºÑбиÑеÑкие ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ ÑоÑÑоÑниÑ: ÑÑавнение Соаве-Ð ÐµÐ´Ð»Ð¸Ñ Ð°-Ðвонга, ÑÑавнение Ðенга-РобинÑона, обобÑенное ÑÑавнение ÐÑÑÑиловÑкого Ð. Ð. РезÑлÑÑаÑÑ ÑаÑÑеÑов компоненÑного ÑоÑÑава газа и молÑнÑÑ Ð´Ð¾Ð»ÐµÐ¹ паÑовой и жидкой Ñаз ÑопоÑÑÐ°Ð²Ð»ÐµÐ½Ñ Ñ ÑкÑпеÑименÑалÑнÑми знаÑениÑми. ÐÑи давлении Ð¾Ñ 3ÐÐа до 7.5ÐÐа и ÑемпеÑаÑÑÑе Ð¾Ñ 263Рдо 283РлÑÑÑие ÑезÑлÑÑаÑÑ ÑаÑÑеÑа показало ÑÑавнение Соаве-Ð ÐµÐ´Ð»Ð¸Ñ Ð°-Ðвонга. The subject of the graduate qualification work is «Mathematical modeling of the phase state of natural gas». The given work is devoted to the modeling of the vapor-liquid equilibrium of natural gas recovered from the Achimovsk accumulations of the Urengoy field. Gas mixture composition: methane (80.324%), ethane (6.024%), propane (3.066%), n-pentane (4.381%), n-heptane (3.108%), n-decane (2.431%), nitrogen (0.0478%), carbon dioxide (0.0188%). The thermobaric conditions for the simulation corresponded to the gas transportation process. The research sets the following goals: To investigate the main types of equations to describe the phase equilibrium of multicomponent mixtures. To analyze the available works on this topic. Selecting the equations of state most suitable for the gas composition and thermobaric conditions. Creating a mathematical model to calculate the two-phase equilibrium of a mixture of a given composition.Verification of the obtained results based on the comparison with the experimental data. Based on the literature review and analysis three cubic equations of state were chosen: Soave-Redlich-Kwong equation, Peng-Robinson equation, generalized equation of Brusilovsky A. I. The results of calculations of gas component composition and mole fractions of vapor and liquid phases have been compared with experimental values. At pressures from 3MPa to 7.5MPa and temperatures from 263K to 283K, the Soave-Redlich-Kwong equation showed the best calculation results. |
Databáze: | OpenAIRE |
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