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Terahertz-spectrum-based quick nondestructive detection method for coal

A terahertz and terahertz pulse technology, applied in the field of coal quality analysis and detection, can solve the problems of inconvenient daily production supervision, cumbersome operation, large errors, etc., and achieve the effects of non-destructive testing, accurate test results, and accurate analysis and identification

Inactive Publication Date: 2012-07-11
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Abstract
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Problems solved by technology

The actual detection shows that the ash and volatile content in coal are not fixed, but change with the heating temperature, heating time and ventilation conditions. Therefore, the current detection methods are cumbersome, time-consuming, large in error, and inconvenient for daily production supervision. What is needed in industrial production is a fast and accurate coal quality detection method that can be used for real-time monitoring

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  • Terahertz-spectrum-based quick nondestructive detection method for coal
  • Terahertz-spectrum-based quick nondestructive detection method for coal

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Embodiment

[0053] This embodiment provides a non-destructive rapid detection method for coal based on terahertz spectroscopy, which includes the following steps:

[0054] Coal standard materials with different numbers (respectively GBW1101q, GBW1103h, GBW1105f, GBW1110g, the specific properties and parameters are shown in Table 1) provided by the National Coal Quality Supervision and Inspection Center and the Coal Quality Analysis Laboratory of the General Academy of Coal Science Research were made into coal standards. Substance samples;

[0055] Table 1

[0056] Numbering

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Abstract

The invention relates to a terahertz-spectrum-based quick nondestructive detection method for coal. The terahertz-spectrum-based quick nondestructive detection method comprises the following steps of: selecting a sample cell; preparing a standard coal material sample and an ordinary coal sample; detecting the standard coal material sample and an empty sample cell by utilizing a terahertz time-domain spectrometer to obtain a terahertz pulse time-domain waveform of the standard coal material sample and a terahertz pulse time-domain waveform of the empty sample cell; performing data processing on the terahertz pulse time-domain waveforms of the standard coal material sample and the empty sample cell to construct a standard fingerprint database; and detecting and analyzing the ordinary coal sample, and obtaining the sort, ash content and carbon content data of the ordinary coal sample according to the standard fingerprint database. According to the method provided by the invention, the coal can be quickly and nondestructively detected; the method is easy to operate, simple in data processing, high in repeatability and accurate in test result; and a coal property can be quickly and accurately analyzed.

Description

technical field [0001] The invention relates to a non-destructive rapid detection method for coal based on terahertz spectroscopy, and belongs to the technical field of coal quality analysis and detection. Background technique [0002] China has abundant coal resources. As the world's largest coal production and consumption country, coal plays an important strategic role in the development of China's national economy. In order to make full and effective use of coal resources, a series of coal quality inspections have been carried out during the exploration stage of coal resources in order to plan development plans. During the coal mining process, the coal quality should also be inspected and monitored. In the process of coal sales, the quality of coal must be evaluated through coal quality analysis to determine the selling price of commercial coal. When important coal is used as an important coal chemical raw material, coal assay analysis is even more necessary. In short,...

Claims

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Application Information

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IPC IPC(8): G01N21/35G01N21/3586
Inventor 赵昆滕学明宝日玛赵卉尼浩
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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