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Coal origin traceability method based on infrared spectroscopy

A technology of infrared spectroscopy and origin traceability, which is applied in the direction of material analysis, measuring devices, and instruments through optical means, which can solve the problems of scattered origin traceability indicators and incomplete systems, and achieve high accuracy

Active Publication Date: 2020-12-01
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing technologies have problems such as scattered origin traceability indicators and incomplete systems

Method used

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  • Coal origin traceability method based on infrared spectroscopy
  • Coal origin traceability method based on infrared spectroscopy
  • Coal origin traceability method based on infrared spectroscopy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Example 1: Based on the provenance of coal Infrared spectroscopy

[0057] The present invention specifically provides a traceable origin of coal, the method established by the following method steps:

[0058] (1) coal samples taken from different areas of the sample collection specific information shown in Table 1. The samples were demineralized process.

[0059] TABLE 1 Coal Sample collection information table

[0060]

[0061]

[0062] (2) The sample was treated infrared spectra analysis;

[0063] (3) was subjected to infrared spectroscopy and OMNIC Origin curve fitting to obtain a peak;

[0064] (4) combined with previous studies to determine the functional group represented by the peaks, after principal component analysis and discriminant analysis to analyze the data obtained functional group, to establish the provenance model.

Embodiment 2

[0065] IR spectra acquired Embodiment 2 of Example

[0066] Demineralization step coal sample was:

[0067] 1) The coal sample into 15g 250ml glass beaker was charged with 3-5ml ethanol infiltration;

[0068] 2) The 5mol / L 80ml hydrochloric acid, poured into a beaker containing coal, and stirred in a water bath (60 ℃) heating IH;

[0069] 3) The sample is placed in a centrifuge tube, filled to 2 / 3, centrifuge 5min, the supernatant waste bottle was charged with distilled water as little as possible of the bottom of the sample, placed in a plastic beaker;

[0070] 4) were repeated in the heating and centrifugation with 80ml of 40% mass fraction of HF acid and concentrated hydrochloric acid;

[0071] 5) The tube containing the centrifuged bottom solids with distilled water to 2 / 3, shake, continued centrifugation, repeated 3-5 times, and PH test paper PH between 6 and 8;

[0072] 6) the solid-like air dried after centrifugation 6h, and then placed in a vacuum drying cabinet 16h.

[...

Embodiment 3

[0077] Example 3 acquires data according to a functional group

[0078] The resulting absorbance spectra using Origin for fitting spectra obtained spectrum peak, the spectrum of the previous studies to determine binding a functional group represented by the peak position, the Russian samples CD-2 as an example, the wave number (cm -1 ) At 3116.62023 Representative aromatic CH 2 chain; hydrogen bonding at 3257.61012 Representative alcohols; 3431.22411 representative of the association of the free hydroxyl group; 1 represents a phenol, an alcohol chain at 3552.94304 OH; 2852.67682 representative of the symmetric stretching vibration CH2; 2872.27979 representative of the symmetry RCH3 stretching; R3CH representative of stretching at 2899.01297; 2924.12971 representative of the asymmetrical stretching CH2; CH3 stretching vibration of the representative at 2972.88414; Representative alkanes at 1048.57978 methyl (CH3), rocking motion of the vibration; CH3 Representative chain at 1086.76...

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Abstract

The invention belongs to the technical field of resource information monitoring, and discloses a coal origin traceability method based on infrared spectroscopy. The method comprises the following steps: taking coal samples from different production places, and carrying out demineralization treatment on the samples; carrying out infrared spectrum test analysis on the processed samples; carrying outOMNIC and Origin curve fitting on the obtained infrared spectrum to obtain a peak position; and determining functional groups represented by peak position, analyzing the obtained functional group data by using principal component analysis and discriminant analysis, and establishing an origin traceability model. The method is characterized by, firstly, collecting coal samples from different imported countries, carrying out demineralization treatment and infrared spectrum test analysis, and carrying out curve fitting and functional group peak position identification on the sample spectrum; by combining principal component analysis, regression analysis and discriminant analysis, carrying out origin traceability on imported coal from Russian, Australian and Indonesian, and establishing the origin traceability model; and the method is rapid and accurate, and the accuracy reaches up to 100%.

Description

Technical field [0001] The present invention belongs to the field of resource information monitoring, and in particular, the present invention relates to a method of coal production, based on infrared spectrum. Background technique [0002] At present, coal is one of the main energy sources used by countries in the world in the 18th century. For a long time, the proportion of coal in production and consumption of primary energy production and consumption has been more than 60%, and this pattern will not change root in the short term. With the booming of international trade after my country's accession to the WTO, and the demand for external energy, my country's total coal imports have grown sharply in China; therefore, it is necessary to establish accurate, fast, convenient, safe, and environmentally friendly coal production, traceability technology, not only help Reduce coal import quality risks and reduce international trade losses due to adulterability, and improve the control...

Claims

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Application Information

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IPC IPC(8): G01N21/3563
CPCG01N21/3563G01N2021/3572G01N2021/3595
Inventor 李晶林阳赵凌霄吴鹏闫馨友李健成
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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