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Method for calculating light petroleum fraction distillation range according to molecular composition

A light petroleum and molecular technology, applied in the direction of material inspection products, etc., can solve problems such as difficulty and large correlation conversion error, and achieve high accuracy and good versatility

Active Publication Date: 2019-06-04
SYSPETRO TECH CO LTD
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  • Claims
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Problems solved by technology

[0007] The present invention is for overcoming above-mentioned weak point, the purpose is to provide a kind of method for calculating the distillation range of light petroleum fractions according to molecular composition, the generality of the present invention is good, can be applicable to the distillation range calculation of light petroleum fractions and products, and High accuracy; solves the problem of large error and difficulty in the correlation conversion between chromatographic simulated distillation and Engler distillation

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  • Method for calculating light petroleum fraction distillation range according to molecular composition
  • Method for calculating light petroleum fraction distillation range according to molecular composition
  • Method for calculating light petroleum fraction distillation range according to molecular composition

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Embodiment

[0049] Embodiment: the present invention will be further described by the specific implementation manner of forecasting ethanol gasoline below; figure 1 As shown, a method for calculating the distillation range of light petroleum fractions according to molecular composition comprises the steps:

[0050] (1) Summarize the molecular types of all light fractions in petroleum production, including solvent oil, gasoline blending components and finished gasoline, ethanol gasoline, methanol gasoline, to form a total of hydrocarbons and oxygenates covering carbon number C3-C13 molecular library. The total molecular library contains more than 300 molecules, among which hydrocarbons include:

[0051] Isoparaffin compounds, including C3-C13 monosubstituted and multi-substituted isoparaffins with at least 100 molecules. Characteristic molecules include isobutane, 2,2-dimethylpropane, 2,2,3-trimethylbutane, 2,2,4-trimethylpentane, 2,6-dimethyloctane, C13 isoparaffins, etc.

[0052] Nor...

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Abstract

The invention relates to a method for calculating a light petroleum fraction distillation range according to a molecular composition. The method comprises the following steps of (1) converging molecular types of all light fractions in petroleum production, and establishing a molecular composition database covering light petroleum fractions and products; (2) establishing a molecular property and temperature parameter database based on the molecular composition database; (3) establishing a molecular hybrid property calculation model database based on the molecular composition database; (4) obtaining real monomer hydrocarbon of detected oil and oxygen-containing compound composition data, wherein the data can be obtained by laboratory analysis or by mathematical model prediction; and (5) based on the monomer hydrocarbon and an oxygen-containing compound obtained in the step (4), calculating and acquiring the distillation range of the light petroleum fraction. The method has good versatility and is suitable for distillation range calculation of the light petroleum fractions and the products and accuracy is high; and problems that an existing chromatographic simulation distillation andEngler distillation association conversion error is large and difficulty is large too are solved.

Description

technical field [0001] The invention relates to the technical fields of petroleum refining and petrochemical production, in particular to a method for calculating the distillation range of light petroleum fractions according to molecular composition. Background technique [0002] The distillation characteristics of light petroleum fractions and products are important characteristics to characterize the volatility of fuels or petroleum products. It provides information on the composition, performance, and performance of fuel or petroleum products. Distillation characteristics are extremely important for motor gasoline, which affects engine start-up, warm-up performance, and tendency to generate vapor lock. The presence of high boiling components in these fuels can significantly affect the degree of formation of solid combustion deposits. Therefore, the limits of distillation characteristics are stipulated in petroleum product specifications, commercial contract agreements, ...

Claims

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Application Information

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IPC IPC(8): G01N33/28
Inventor 陈辉何恺源
Owner SYSPETRO TECH CO LTD
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