Gasoline blending optimization method based on molecular composition

Abstract

The invention relates to a gasoline blending optimization method based on molecular composition. The gasoline blending optimization method has the advantages of being simple and efficient, greatly saving the analysis and detection time and cost, directly performing molecular computing on the macroscopic property from each component without acquiring the macroscopic property of a blending componentin advance, thus saving more than 75% of the analysis and detection time and more than 50% of labor, being simpler to use, and being higher in efficiency, being high in universality and accuracy of ablending physical property computing model, wherein the physical property model can calculate the conventional gasoline components, ether-containing gasoline, methanol gasoline, and ethanol gasoline;and being high in applicability. Besides, the gasoline blending optimization method based on molecular composition can automatically select blending components from any one component pool for optimization without fixed components. The gasoline blending optimization method based on molecular composition has strong versatility, can optimize the conventional national standard gasoline, can also optimize the methanol gasoline and the ethanol gasoline, and can optimize the blended gasoline containing the distillation range index constraint. The gasoline blending optimization method based on molecular composition is high in the credibility of the optimization result and greatly improves the primary blending success rate of gasoline blending.

Description

technical field [0001] The invention relates to the technical fields of petroleum refining and chemical production, in particular to a method for optimizing gasoline blending based on molecular composition. Background technique [0002] Gasoline blending is the final link of gasoline production in petrochemical and oil refining enterprises, and its blending benefits directly determine the economic benefits of production enterprises. In the actual blending process, there are many component oils involved in the blending, including catalytic cracking hydrogenated gasoline, isomerized gasoline, reformed gasoline, straight-run naphtha, alkylated gasoline, etc. [0003] Existing gasoline blending optimization methods are all blended based on the macroscopic properties of components, with low accuracy and low efficiency. With the development of instrumental analysis technology, gas chromatography technology has been able to analyze the concentration information of gasoline compone...

AI Technical Summary

Problems solved by technology

The current problems are as follows: 1. The existing simulation methods for building gasoline molecules have low accuracy and poor versatility

2. The existing calculation method of blending physical properties has low accuracy and is not compatible with the calculation of physical properties of oxygenated gasoline

3. The existing blending optimization needs to fix the blending components first

4. Existing blending optimization methods need to obtain the macroscopic properties of each blending component

5. Existing blending optimization methods do not include the constraint of distillation range temperature

6. The reliability of the solution results obtained by the existing harmonic optimization method is low

Lead to a low reconciliation success rate

7. Existing blending and optimization methods are not suitable for methanol gasoline and ethanol gasoline

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