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Method for constructing model for rapid and nondestructive real-time prediction of crude oil properties and application thereof

A technology of crude oil and properties, which can be used in measuring devices, material analysis by optical means, instruments, etc., and can solve problems such as unavailability

Inactive Publication Date: 2018-03-20
EAST CHINA UNIV OF SCI & TECH
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Problems solved by technology

In the near-infrared spectrum, different components often absorb at the same wave number, and the analysis of the analyte only relying on the attribution of the spectral peak often fails to obtain useful results.

Method used

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  • Method for constructing model for rapid and nondestructive real-time prediction of crude oil properties and application thereof
  • Method for constructing model for rapid and nondestructive real-time prediction of crude oil properties and application thereof
  • Method for constructing model for rapid and nondestructive real-time prediction of crude oil properties and application thereof

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Embodiment 1

[0145] The specific steps of the present invention are described below with the embodiment of sulfur content prediction including:

[0146] Step 1: Collect 109 different types of crude oil samples, 79 as a calibration set, and 30 as a verification set.

[0147] Step 2: The temperature of the sample is controlled at 30°C, and a BRUKER near-infrared spectrometer and a Hellma transmission near-infrared fiber optic probe are selected for test determination. Measure the near-infrared spectrum of crude oil samples by inserting the near-infrared optical fiber probe directly into each crude oil sample, and the scanning range of the spectrum is 4000-12500cm -1 , resolution 32cm -1 , the cumulative number of scans is 32 times. And the sulfur content of crude oil samples was measured according to traditional standard methods. image 3 is the original near-infrared spectrum of crude oil. It can be seen that the baseline of the original spectrum drifts seriously, and the spectral peaks...

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Abstract

The invention relates to a method for constructing a model for rapid and nondestructive real-time prediction of crude oil properties and an application thereof. The method comprises the following steps: constructing a crude oil correction set, and determining properties of crude oil in the correction set; acquiring a near infrared spectrum of the crude oil by utilizing a near infrared spectrometerequipped with a near-infrared transmission type optical fiber probe; preprocessing the near infrared spectrum of the crude oil obtained in the step II by utilizing a method for combining first-orderdifferential and multiplicative scatter correction; performing training set sample selection on the preprocessed spectral data by utilizing a principal component analysis method; selecting a specificspectral wave number according to to-be-tested items of the crude oil and a spectral data set of the crude oil; and constructing a mathematical correlation model between the crude oil properties and the near-infrared spectral data by utilizing a regression modeling method. Compared with the traditional rapid crude oil measurement method, the method disclosed by the invention does not need complicated sample pretreatment, is simple in operation, rapid, nondestructive, high in signal-to-noise ratio of the near infrared spectrum and high in precision of quantitative analysis models and is particularly applicable to industrial online real-time prediction of multiple attribute values of the crude oil.

Description

technical field [0001] The invention relates to a method for constructing a fast and non-destructive real-time prediction crude oil property model and its application. Background technique [0002] In 2016, my country's crude oil processing volume climbed to 541 million tons, and crude oil imports reached 381 million tons, becoming the world's largest energy importer. As the most important raw material for refining and chemical enterprises, on the one hand, the demand for crude oil has increased sharply, the import volume has expanded, and the price has remained high and fluctuated frequently; There are many characteristics such as differences, high feed requirements of the device, and difficulty in grasping the properties of the blended oil. These have brought tremendous pressure to refining and chemical enterprises. Timely access to the current crude oil property evaluation data—that is, crude oil rapid evaluation, will provide support for the optimization of production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577G01N21/359
CPCG01N21/3577G01N21/359
Inventor 钱锋隆建杨明磊杜文莉钟伟民
Owner EAST CHINA UNIV OF SCI & TECH
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