Marine heavy oil liquid phase thermophysical property calculation method

Abstract

The invention discloses a marine heavy oil liquid-phase thermophysical property calculation method, and the specific scheme is as follows: the marine heavy oil liquid-phase thermophysical property calculation method comprises the step of calculating the thermophysical property by replacing heavy oil with two components, the two components comprise a first virtual component and a second virtual component, the first virtual component is a low-carbon-number hydrocarbon pure substance, the second virtual component is a low-carbon-number hydrocarbon pure substance, and the third virtual component is a low-carbon-number hydrocarbon pure substance. Calculating the average density and the average kinematic viscosity of the heavy oil in the critical temperature range, and calculating the average kinematic viscosity of the heavy oil; calculating the dynamic viscosity of the second virtual component at the first temperature and the second temperature; the kinematic viscosity, the dynamic viscosity, the density and the dimensionless specific gravity parameters of the second virtual component at the first temperature and the second temperature are correlated and iteratively calculated, and then the basic characteristic parameters of the second virtual component are calculated; and calculating the liquid-phase heat conductivity coefficient, the specific heat at constant pressure, the surface tension coefficient, the saturated vapor pressure and the evaporation heat thermophysical property parameters of the second virtual component in the critical temperature range.

Description

technical field [0001] The invention relates to the technical field of heavy oil flow and spray simulation, in particular to a method for calculating liquid phase thermal properties of marine heavy oil. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Heavy oil is usually made from the residue remaining after the distillation of crude oil products as the basic raw material, and is processed by mixing light oil products and performance additives. Its components are mainly distributed in two boiling point ranges, and the composition system is highly asymmetrical. And this production process makes the composition and thermal properties of heavy oil not fixed. Obviously, in the flow and spray simulation research, the physical properties of heavy oil cannot be objectively reflected in the physical properties of heavy oil, and it is more reasonab...

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Problems solved by technology

[0005] Aiming at the deficiencies in the existing technology, the purpose of the present invention is to provide a calculation method for the liquid-phase thermophysical properties of marine heavy oil, which solves the lack of a large-scale temperature range available for simulation research in the prior art. Technical Problems of Thermophysical Properties of Liquid Phase

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