Method for measuring contents of components in oil residue

Abstract

A method for measuring the contents of components in oil residue features that an optical spectrum array is created with the ultraviolet-visual absorption spectra obtained by concentration normalization of representative oil residue specimens, they are clustered by fuzzy k-average value of the charncteristic variables that is the analyzed score of main component, the ultraviolet-visual absorption spectra of the correcting set composed of each oil residue types after clustered and the basic data measured by elution chromatography take part of regression analysis to create correct model, the main components of unknown oil residue is analyzed for its ultraviolet-visual absorption spectrum to determine its type, and the contents of its main components can be calculated by the correct model. Its avantages are high correctness and high speed.

Description

technical field

[0001] The invention relates to a method for determining residual oil components, in particular to a method for determining the content of residual oil components by using ultraviolet-visible absorption spectroscopy combined with chemometrics. Background technique

[0002] The full utilization of residual oil is one of the important means to improve the economic benefits of petroleum refineries. The composition and properties of residual oil are very important to select suitable processing conditions for residual oil and fully develop and utilize heavy oil resources. However, because the number of hydrocarbons in residual oil is very large and the structure is very complex, it is difficult to separate and identify detailed hydrocarbon groups. Residual oil is generally composed of four components: saturated hydrocarbons (Saturates), aromatic hydrocarbons (Aromatics), colloids (Resins) and asphaltene (Asphaltenes), so the determination of the so-called residua...