On-line near-infrared spectrum analyzer

Abstract

The invention relates to an on-line near-infrared spectrum analyzer. The on-line near-infrared spectrum analyzer has the advantages that response speed is fast, modeling capability is strong, prediction precision is high, a plurality of components can be simultaneously predicted, usage and maintenance are convenient, maintenance cost is low, and reliability is high. The on-line near-infrared spectrum analyzer is adapted to various complex application environments. The on-line near-infrared spectrum analyzer comprises a rapid loop module, a sample pretreatment system, a flow cell, a recovery system, and an on-line near-infrared spectrum analyzer host; a liquid sample is flowed into the rapid loop module, then is flowed out from the rapid loop module and is introduced into the sample pretreatment system for (removing impurity, removing bubble, keeping constant temperature and constant pressure) processing, then the liquid sample is introduced into the flow cell for spectrum acquisition, and finally the measured liquid sample is recovered by the recovery system.

Description

technical field [0001] The invention belongs to the field of on-line analysis widely used in large-scale industrial production processes, and in particular relates to an on-line near-infrared spectrum analyzer. Background technique [0002] The near-infrared spectral region is defined by ASTM as electromagnetic waves with wavelengths between 780 and 2526nm. This area has both the advantages of easy acquisition of signals in the visible light region and rich information in the spectral analysis of the infrared region. The application of near-infrared spectroscopy was limited in the early days due to the weak absorption intensity of frequency multiplication and combined frequency in the near-infrared region, complex spectral bandwidth and serious overlap. The continuous development of optoelectronic and computer technology, especially the wide application of chemometrics in the field of analysis, has greatly promoted the development of near-infrared analysis technology. [0...

AI Technical Summary

Problems solved by technology

Traditional industrial analysis methods are increasingly unable to meet the analysis needs of modern industrial processes, and near-infrared spectroscopy analysis technology from the identification of production raw materials, to the determination of various parameters in the production process and the component analysis of intermediate products to the final quality analysis of finished products , can be used in almost every quality control link to realize continuous and real-time process monitoring of the production process

[0005] Most domestic near-infrared spectroscopy instruments rely on imports. The high prices of imported products and disjointed after-sales technical services have hindered the popularization of this technology in my country and seriously affected the progress of my country's production control technology.

In addition, whether the near-infrared spectroscopy analysis technology can work effectively depends largely on the calibration model. The calibration model of foreign instruments is not only expensive, but also not suitable for domestic samples.

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