Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for the determination of the conjugated diolefins content of a sample using near infrared spectrum and method for controlling a unit

A sample, spectroscopic technique used in gasoline containing sulfur, alkenes and diolefins to solve problems such as automation of the method

Active Publication Date: 2007-07-04
INST FR DU PETROLE
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the operations required for the analysis, such as liquid extraction or product transfer, the automation of the method is not considered, so that the method becomes a control method for continuous control of selected hydrogenation industrial units

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for the determination of the conjugated diolefins content of a sample using near infrared spectrum and method for controlling a unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The description below refers to MAV, but the invention is applicable to all chemical methods for determining the diolefin content in cracked gasoline.

[0032] MAV is a measure of the presence of conjugated diolefins in gasoline based on the stoichiometric addition of diolefins to maleic anhydride. The method is expressed as several milligrams of maleic anhydride to one milligram of sample.

[0033] The method described in the present invention is to determine catalytic cracking gasoline or pyrolysis gasoline or coker gasoline or all of them according to the spectrum obtained in the near infrared (PIR) of the gasoline or the mixture, that is, the near infrared with a wavelength of 800-2500 nanometers. The MAV method for any blend of gasoline described above.

[0034] The method of deriving MAV by means of spectral PIR utilizes the comparison value between the spectrum of the sample under study and the spectra of all elements forming the so-called calibration matrix acc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
wavelengthaaaaaaaaaa
wavelengthaaaaaaaaaa
Login to View More

Abstract

This invention describes a method for determining the content of conjugated diolefins by means of the measurement of the MAV of a sample of catalytic cracking gasoline or thermal cracking gasoline, from its NIR (near-infrared) spectrum, and the application of said method for monitoring a unit for selective hydrogenation of the cracking gasolines.

Description

technical field [0001] The present invention relates to a method for determining the different properties of hydrocarbon fractions, especially gasoline, especially catalytically cracked gasoline, evaporatively cracked gasoline, coker gasoline and their mixtures, based on their spectra obtained in the near infrared (abbreviated to spectrum PIR). methods with different properties. In general, the invention is useful for gasolines containing sulfur (10-10000 ppm), olefins (at least 5% by weight) and diolefins. The final distillation temperature of these gasolines should be below 300°C, preferably below 250°C. Background technique [0002] The wavelength corresponding to the near-infrared range is about 800-2500 nanometers (14286-4000cm -1 ). The properties determined by gasoline spectral PIR are very different, so far these properties are mainly density, octane number (RON and MON), vapor pressure Reid (RVP), ASTM distillation and chemical group (paraffin, aromatic, naphthen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/72C10G49/26G01N21/35
CPCG01N33/28G01N21/359G01N21/274G01N21/3563G01N2201/129
Inventor F·皮卡德C·洛帕茨加西阿J·-M·巴德F·瓦哈尔
Owner INST FR DU PETROLE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com