Сравнительный анализ эффективности оптического и калориметрического методов изучения околокритического состояния углеводородных смесей

Abstract

By the example of a binary hydrocarbon methane–pentane mixture simulating the simplest gas-condensate system, it is shown that the optical method for studying the near-critical state of hydrocarbon fluid, using the measurement of the intensity of critical opalescence in the vicinity of the liquid–gas critical point, gives more accurate and reliable results for the dew–bubble curve and values of critical parameters of the fluid than classical adiabatic calorimetry, which uses the thermogram method to record the change in the phase state of the fluid in the near-critical region.