Method for detecting hydrogenated tail-oil cyclanes and arene composition using near infrared spectrum

A technology of near-infrared spectroscopy and hydrogenated tail oil, which is applied in the field of determining the composition of cycloalkanes and aromatics in hydrogenated tail oil by near-infrared spectroscopy, which can solve the problems of long time required and unsatisfactory production plants, and achieve small operating space , Accurate test cost, high precision effect

Inactive Publication Date: 2007-06-13
YANGZI PETROCHEM
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Problems solved by technology

[0002] In order to achieve real-time optimization of ethylene production equipment, it is necessary to realize the rapid analysis of the composition of the raw material group first, and the chromatography method generally used now takes at least 2-3 hours, especially for heavy raw materials, the chromatography-mass spectrometry analysis method is used, so It takes longer time and is far from meeting the requirements of the production plant. It is urgent to find a more convenient and quick analysis method

Method used

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  • Method for detecting hydrogenated tail-oil cyclanes and arene composition using near infrared spectrum
  • Method for detecting hydrogenated tail-oil cyclanes and arene composition using near infrared spectrum
  • Method for detecting hydrogenated tail-oil cyclanes and arene composition using near infrared spectrum

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Embodiment

[0054] Step 1: Collect Modeling Samples

[0055] 1.1 Collect samples to establish the cycloalkane model in the composition of the hydrogenated tail oil group, see Figure 2, that is, the measured mass fraction range of Model I: (20.5-58.3) m%.

[0056] 1.2 Collect samples to establish a cycloalkane model in the hydrogenation tail oil group composition, see Figure 3, that is, the measured mass fraction range of Model II: (13.4-27.4) m%.

[0057] 1.3 Collect the samples to establish the bicycloalkane model in the hydrogenation tail oil group composition, see Figure 4, that is, the measured mass fraction range of Model III: (1.2-18.8) m%.

[0058] 1.4 Collect samples to establish the tricycloalkane model in the composition of the hydrogenated tail oil group, see Figure 5, that is, the measured mass fraction range of Model IV: (0-12.3) m%.

[0059] 1.5 Collect and establish the samples of the tetracycloalkane model in the hydrogenation tail oil group composition, see Figure 6, tha...

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Abstract

The invention relates to a method to test the constitution of hydrogenation tail oil naphthenic hydrocarbon group and arene group by near infrared optical spectrum. It builds up models of naphthenic hydrocarbon, 1-naphthenic hydrocarbon, 2- naphthenic hydrocarbon, 3- naphthenic hydrocarbon, 4- naphthenic hydrocarbon and arene by alkene cracking device, and aromatics reformer and oil refining hydrogenation unit. And the content of naphthenic hydrocarbon, 1-naphthenic hydrocarbon, 2- naphthenic hydrocarbon, 3- naphthenic hydrocarbon, 4- naphthenic hydrocarbon and arene would be calculated by using the models. It has the advantages of convenient, rapid and accurate.

Description

technical field [0001] The present invention relates to the establishment of naphthene, monocycloalkane, dicycloalkane, tricycloalkane, tetracycloalkane and aromatics models for the hydrogenation tail oil of olefin cracking unit, aromatics reforming unit and refinery hydrogenation unit by using near-infrared spectroscopy technology, The established model was used to determine the contents of naphthenes, monocycloalkanes, dicycloalkanes, tricycloalkanes, tetracycloalkanes and aromatics in the hydrogenation tail oil group composition. Background technique [0002] In order to achieve real-time optimization of ethylene production equipment, it is necessary to realize the rapid analysis of the composition of the raw material group first, and the chromatography method generally used now takes at least 2-3 hours, especially for heavy raw materials, the chromatography-mass spectrometry analysis method is used, so It takes a longer time and is far from meeting the requirements of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/27G01N30/00
Inventor 杨素黄贤平杨苏平
Owner YANGZI PETROCHEM
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