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Online coal quality analysis method

An analysis method and coal quality technology, applied in the direction of material excitation analysis, etc., can solve the problems of no industrial online analysis, sample preparation technology limitations, etc.

Inactive Publication Date: 2019-06-11
西派特(北京)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have been many reports on coal quality analysis by laser-induced breakdown spectroscopy (LIBS), which is suitable for analyzing elements, but limited by sample preparation techniques, there is no precedent for successful industrial on-line analysis

Method used

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Embodiment Construction

[0012] Research a safe online spectroscopic analysis system that can accurately detect calorific value, moisture, volatile matter, fixed carbon, ash, metal elements, sulfur, ash melting point, etc. at the same time.

[0013] Studies have shown that molecular spectra can directly reflect information on calorific value, moisture, volatile matter, fixed carbon, and ash. figure 1 It is a linear correlation curve between coal spectrum and calorific value. Therefore, it can be used as information for measuring indicators such as calorific value, moisture, and volatile matter. figure 2 It is the LIBS spectrum of coal, which contains rich information of inorganic elements. image 3 is the LIBS spectrum of sulfur. Therefore, it is proposed to combine molecular spectroscopy with plasma spectroscopy, and use multivariate analysis techniques to study and realize accurate measurement methods for all properties of coal quality.

[0014] Online Spectrum Acquisition

[0015] 150 coal par...

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Abstract

By adoption of a novel molecular spectrum and plasma spectrum combined multivariate analysis technology, the invention discloses a novel online coal quality analysis method, and aims at safely, correctly and synchronously carrying out online measurement on key indexes such as calorific value, moisture, fixed carbon, volatile components, ash content, sulfur content, inorganic elements and the like.

Description

technical field [0001] The invention relates to an online coal quality analysis system, which belongs to the field of coal quality online detection. Background technique [0002] Coal combustion accounts for more than 70% of the power generation cost of thermal power plants, and the quality of coal combustion is also a key factor affecting the safe and economical operation of power plants. The key indicators of coal combustion include: calorific value, volatile matter, sulfur content, ash, moisture, fixed carbon, inorganic elements, etc. At present, the cost of coal quality analysis in power plants is high (instrument and manpower), time-consuming (about 8 hours), and the test results seriously lag behind the boiler combustion operation, which is not conducive to optimizing production. Therefore, there is a huge room for improvement in power plants in terms of coal-fired heat, limestone utilization, reduction of cold slag and dust removal loads, and emission compliance, wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/63
Inventor 庞立波杨永程腾
Owner 西派特(北京)科技有限公司