Real time calculation method of molecular information in gasoline products

A real-time calculation and product technology, applied in the field of petrochemical products, can solve problems such as untargeted continuous reforming reaction, model convergence needs to be verified, and difficult to meet the accuracy of model output results, etc.

Pending Publication Date: 2020-07-17
ZHEJIANG SUPCON TECH +1
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  • Description
  • Claims
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Problems solved by technology

This method has too many constraints, the convergence of the model needs to be verified, the accuracy of the model output results is difficult to meet the requirements of project implementation, the response to continuous reforming is not targeted, and the workload is huge

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  • Real time calculation method of molecular information in gasoline products
  • Real time calculation method of molecular information in gasoline products
  • Real time calculation method of molecular information in gasoline products

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Embodiment 1

[0042] In order to solve the problem of determining the detailed components of crude oil in the prior art, the embodiment of the present application proposes a nonlinear octane number prediction model for mixed components, such as figure 1 As shown, the real-time calculation methods for molecular information in gasoline products implemented based on this model include:

[0043] 11. Carry out a primary classification of the molecular types contained in gasoline products based on the similarity of molecular types, and conduct a secondary classification based on the different molecular structure types on the basis of the primary classification;

[0044] 12. According to the known secondary classification results, calculate the current component ratio of each component in gasoline products;

[0045] 13. Construct an octane number prediction model, import known component ratios, and calculate the octane prediction value under the constraint conditions.

[0046] In practice, the re...

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Abstract

The embodiment provides a real time calculation method of molecular information in gasoline products. The method includes: on the basis of the similarity of molecular types, performing primary classification on the molecular types in the gasoline product and performing secondary classification according to the differences between the molecular types on the basis of the primary classification result; according to the known secondary classification result, calculating the ratio of each component accounting for the present components in the gasoline product; configuring an octane number prediction model and introducing the known component ratio, and calculating the octane number prediction value satisfying a constrain condition. Since the octane number prediction model is added to a continuous reforming unit, with consideration of the nonlinear blending of the octane number, the octane number prediction model is modified by adding octane number contribution parameter, and gradient modification on the octane number is carried out with combination of the actual operation of the unit; therefore, the octane number prediction model is capable of covering the operation varying range of thecontinuous reforming unit.

Description

technical field [0001] The invention belongs to the field of petrochemical products, in particular to a real-time calculation method for molecular information in gasoline products. Background technique [0002] Most of the existing technologies focus on establishing the relationship between the macroscopic properties of crude oil and the detailed molecular composition of crude oil based on the premise of the macroscopic properties of crude oil. Next, several sets of data with the same or similar macroscopic properties as the new crude oil are matched in the database, and optimized calculations are performed through the established mathematical model, so as to calculate the detailed molecular composition of the new crude oil with known macroscopic properties. [0003] The macroscopic properties of crude oil include but are not limited to boiling range, density, carbon content, hydrogen content, sulfur content, nitrogen content, metal content, viscosity, flash point, nuclear m...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G16C10/00G16C20/70
CPCG16C10/00G16C20/70
Inventor 李辉娄海川吴玉成谢六磊
Owner ZHEJIANG SUPCON TECH
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