Detection method of gasoline properties based on weighted absorbance and similar samples

A technology of gasoline properties and similar samples, which is applied in the field of gasoline detection in oil refineries, can solve the problems of not meeting actual needs and poor prediction accuracy of modeling methods, and achieve the effect of avoiding inaccurate classification and improving model accuracy

Active Publication Date: 2015-10-21
南京富岛信息工程有限公司
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Problems solved by technology

[0004] In the actual production process, because the properties of oil samples are constantly fluctuating, the prediction accuracy of ordinary modeling methods is poor, which cannot meet the actual needs

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  • Detection method of gasoline properties based on weighted absorbance and similar samples
  • Detection method of gasoline properties based on weighted absorbance and similar samples
  • Detection method of gasoline properties based on weighted absorbance and similar samples

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and examples of implementation.

[0029] The research method octane number and density properties of 92# blended oil are given in Table 1 below, wherein, the samples numbered 92#-1 to 92#-53 are known spectral databases, and the sample numbered 92#-54 is the forecast sample.

[0030] Table 1 92 # Blend oil sample number and corresponding research method octane number and density

[0031]

[0032] It can be seen from Table 1 that the two properties of 92# blended oil are given in the table, but the spectral distance of the usually detected samples does not consider the properties of the samples, which is obviously inappropriate. Such as figure 1 and figure 2 , according to the spectral absorbance of the known sample and the octane number and density of the research method, calculate the correlation coefficient R between the absorbance of the known sample and these ...

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Abstract

The invention provides a detection method of gasoline properties based on weighted absorbance and similar samples, the detection method comprises the steps of calculating the correlation coefficient R between a sample to be detected and a known sample on basis of the gasoline properties and the absorbance of the known sample after the near infrared spectroscopy of the sample to be detected and the known sample is conventionally pretreated; taking the correlation coefficient R as a weight, the weighted sample absorbance is obtained and the weighted absorbance matrix is established; calculating the score matrix of the weighted absorbance matrix by adopting a principal component analytical method; selecting the first principal component and the second principal component in the score matrix to obtain a new score matrix; calculating the mahalanobis distance according the new score matrix, selecting the similar samples which are nearest to the mahalanobis distance of the sample to be detected in the known spectral database as modeling samples, and performing prediction on the sample to be detected. According to the detection method provided by the invention, the effect of gasoline properties on the spectral distance is fully considered, the phenomenon that the classification is not accurate can be effectively avoided, so that the prediction accuracy of a model is finally improved. An important guarantee can be provided for accurately measuring the gasoline properties and timely adjusting the operating parameters.

Description

technical field [0001] The invention relates to gasoline detection in oil refining enterprises, especially the rapid prediction of gasoline properties, in particular to a gasoline property detection method based on weighted absorbance and similar samples. Background technique [0002] In the process of oil refining and gasoline blending, it is necessary to analyze various properties of straight-run gasoline and finished gasoline, such as octane number, distillation range, composition, etc. Conventional analysis requires a variety of analysis methods to complete, and the analysis speed is slow, The operation is cumbersome and uses more human and financial resources, which is not conducive to the quality control in the refining and blending process. Nowadays, with the continuous development of computer technology, it is possible to analyze a large amount of data in a very short time, which promotes the development of spectroscopic technology, and makes oil analysis fundamental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/359G01N21/3577G06F19/00
CPCG16C20/20
Inventor 陈夕松宋玲政杜眯费树岷胡云云
Owner 南京富岛信息工程有限公司
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