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A rapid detection method for coal quality based on comprehensive analysis of photoluminescence spectroscopy

A technology for photoluminescence and detection methods, which is applied in the measurement of color/spectral properties, material excitation analysis, material analysis by optical means, etc. problem, to achieve the effect of accurate acquisition, accurate detection, and simple method

Active Publication Date: 2022-05-13
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

Therefore, the actual spectrum is the superposition of Raman spectrum and fluorescence spectrum, which interferes with the analysis of Raman spectrum, brings difficulties to the quantitative analysis of Raman spectrum, and makes it difficult to reveal the specific structure of coal

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  • A rapid detection method for coal quality based on comprehensive analysis of photoluminescence spectroscopy
  • A rapid detection method for coal quality based on comprehensive analysis of photoluminescence spectroscopy
  • A rapid detection method for coal quality based on comprehensive analysis of photoluminescence spectroscopy

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Embodiment Construction

[0037] The principle and method of the rapid detection of coal quality based on the comprehensive analysis of photoluminescence spectrum involved in the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Photoluminescence is a process in which when the laser is irradiated on the surface of a substance, the electrons in the ground state absorb energy and jump to a high energy level, the excited state is unstable, and the electrons release the absorbed energy when they return to the ground state to emit visible light. Whether substances can emit light after absorbing laser light depends largely on their molecular structure. Therefore, photoluminescence spectroscopy can represent structural information at the molecular level of substances and can be used to analyze the structure of substances. That is to say, the photoluminescence technology is to excite the material itself to emit light; while the existing Raman technology me...

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Abstract

The present invention provides the rapid detection method of coal quality based on photoluminescence spectrum comprehensive analysis, it is characterized in that, comprises: Step 1. carry out photoluminescence spectrum detection to coal, determine the photoluminescence spectrum characteristic peak of coal according to detection result, then carry out Split peak analysis and fitting calculation to obtain the characteristic parameters of the photoluminescence spectrum related to the coal quality; step II. select standard coal samples of different coal qualities, and obtain the corresponding characteristic parameters of the photoluminescence spectrum according to the method described in step I respectively Carry out industrial analysis and calorific value detection to the coal sample to obtain the characteristic parameters of the coal quality composition and the calorific value; establish the mapping relationship between the characteristic parameters of the photoluminescence spectrum and the characteristic parameters of the coal quality composition and the calorific value; Step III. The characteristic parameters of the photoluminescence spectrum are brought into the mapping relationship between the characteristic parameters of the photoluminescence spectrum established in step II, the characteristic parameters of the coal quality composition and the calorific value, and the characteristic parameters of the coal quality composition and the calorific value of the coal to be measured are calculated.

Description

technical field [0001] The invention belongs to the field of coal quality detection, and in particular relates to a rapid detection method for coal quality based on comprehensive analysis of photoluminescence spectrum. Background technique [0002] Coal is China's main primary energy source. In 2019, China's coal consumption accounted for 57.7% of China's total energy consumption. In the foreseeable future, coal will still occupy the main position of my country's energy consumption, which is of great significance to the comprehensive and sustainable development of my country's economy. important strategic significance. Therefore, the clean and efficient utilization of coal is very important to the national economy, and the intelligent production of coal is one of the effective ways to efficiently utilize coal. In the process of intelligent coal production, online accurate monitoring of raw coal is a key step. [0003] At present, the coal quality detection methods widely us...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/63G01N21/31
CPCG01N21/63G01N21/314
Inventor 向军陈德志徐俊何其琛王鑫钟毓秀凌鹏江龙汪一苏胜胡松
Owner HUAZHONG UNIV OF SCI & TECH
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