Rapid coal quality detection method based on photoluminescence spectrum comprehensive analysis

Abstract

The invention provides a rapid coal quality detection method based on photoluminescence spectrum comprehensive analysis, which is characterized by comprising the following steps: step I, carrying out photoluminescence spectrum detection on coal, determining a photoluminescence spectrum characteristic peak of the coal according to a detection result, and then carrying out peak division analysis and fitting calculation to obtain photoluminescence spectrum characteristic parameters related to coal quality; step II, selecting standard coal samples with different coal qualities, and respectively obtaining corresponding photoluminescence spectrum characteristic parameters according to the method described in the step I; carrying out industrial analysis and calorific value detection on the coal sample to obtain coal quality component characteristic parameters and calorific value; establishing a mapping relationship among the photoluminescence spectrum characteristic parameters, the coal quality component characteristic parameters and the calorific value; and step III, acquiring photoluminescence spectrum characteristic parameters of the coal to be detected, substituting the photoluminescence spectrum characteristic parameters into the mapping relationship between the photoluminescence spectrum characteristic parameters and the coal quality component characteristic parameters and the calorific value established in the step II, and calculating to obtain the coal quality component characteristic parameters and the calorific value of the coal to be detected.

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...

Examples

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...

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...

Examples

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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