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Method for constructing diesel fraction molecule library and predicting diesel molecule composition based on conventional diesel detection means

A technology of molecular library and diesel oil, which is applied in the field of petroleum refining and petrochemical production, can solve the problems of difficult convergence and slow speed of optimization, and achieve the effect of improving the optimization ability, reducing the number of optimization variables, and achieving good optimization results

Pending Publication Date: 2021-11-12
SYSPETRO TECH CO LTD
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Problems solved by technology

The molecular distribution model of the diesel fraction established by the present invention can be better adapted to the subsequent optimization algorithm, and solves the problem that the optimization is difficult to converge and the speed is slow in the operation process

Method used

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  • Method for constructing diesel fraction molecule library and predicting diesel molecule composition based on conventional diesel detection means
  • Method for constructing diesel fraction molecule library and predicting diesel molecule composition based on conventional diesel detection means
  • Method for constructing diesel fraction molecule library and predicting diesel molecule composition based on conventional diesel detection means

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Embodiment 1

[0038] Embodiment 1: Taking the establishment of a macroscopic property library and a molecular information library of a diesel fraction at atmospheric pressure as an example, a method for building a molecular library of diesel fractions and predicting the molecular composition of diesel oil based on conventional diesel detection means includes the following steps:

[0039] (1) Construct a macroscopic property library and molecular information library of diesel fractions based on conventional diesel detection methods;

[0040] 1) Using gas chromatography / field ionization-time-of-flight mass spectrometry (GC / FI-TOF MS) to analyze a certain atmospheric diesel oil fraction, and obtain the unsaturation range, carbon number range, and different Data such as saturation and relative content under the carbon number range.

[0041] 2) Based on conventional diesel detection methods, the macroscopic properties of diesel fractions are obtained, including: Enshin distillation temperature, ...

Embodiment 2

[0063] Embodiment 2: A method for constructing a diesel fraction molecular library and predicting the molecular composition of diesel oil based on conventional diesel detection means, comprising the following steps:

[0064] (1) Construct a macroscopic property library and molecular information library of diesel fractions based on conventional diesel detection methods;

[0065] 1) Using gas chromatography / field ionization-time-of-flight mass spectrometry (GC / FI-TOF MS) to analyze a certain atmospheric diesel oil fraction, and obtain the unsaturation range, carbon number range, and different Data such as saturation and relative content under the carbon number range.

[0066] 2) Based on conventional diesel detection methods, the macroscopic properties of diesel fractions are obtained, including: Enshin distillation temperature, density, distillation range, element content, group composition, and cetane number index of atmospheric diesel. The macroscopic property library of the...

Embodiment 3

[0087] Embodiment 3: A method for constructing a diesel fraction molecular library and predicting diesel molecular composition based on conventional diesel detection means, comprising the following steps:

[0088] (1) Construct a macroscopic property library and molecular information library of diesel fractions based on conventional diesel detection methods;

[0089] 1) Using gas chromatography / field ionization-time-of-flight mass spectrometry (GC / FI-TOF MS) to analyze a certain atmospheric diesel oil fraction, and obtain the unsaturation range, carbon number range, and different Data such as saturation and relative content under the carbon number range.

[0090] 2) Based on conventional diesel detection methods, the macroscopic properties of diesel fractions are obtained, including: Enshin distillation temperature, density, distillation range, element content, group composition, and cetane number index of atmospheric diesel. The macroscopic property library of the atmospheri...

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Abstract

The invention relates to a method for constructing a diesel fraction molecule library and predicting diesel molecule composition based on a conventional diesel detection means. The method comprises the following steps: establishing a model capable of truly reflecting an objective diesel molecule distribution rule by fully utilizing an existing detection result in a laboratory; and through the established molecular distribution model of the diesel fraction, obtaining the molecular composition of the diesel fraction with high goodness of fit with the molecular composition detected by an instrument. The molecular distribution model of the diesel fraction established by the method can be well adapted to a subsequent optimization algorithm, and the problems that optimization is difficult to converge and the speed is low in the operation process 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 constructing a molecular library of diesel fractions and predicting the molecular composition of diesel oil based on conventional diesel oil detection means. Background technique [0002] In the molecular management process of petroleum processing, the molecular composition of distillates and oil products is the basic information required. A reasonable and complete description of the molecular structure and content of each stream in the processing process is of great significance for the refinery to manage the petroleum processing process at the molecular level. At present, for components with a boiling point higher than that of gasoline, mainstream analytical methods cannot give qualitative and quantitative information on all molecular details, and the same is true for diesel fractions. Therefore, it is particularly importan...

Claims

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Application Information

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IPC IPC(8): G16C20/20G16C20/70G16C20/90G01N30/88
CPCG16C20/20G16C20/70G16C20/90G01N30/88
Inventor 梁新月何恺源
Owner SYSPETRO TECH CO LTD
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