Coal element analytic method and on-line detecting equipment based on spectral library least square method

A least square method and spectral library technology, applied in the analysis of materials, material analysis using wave/particle radiation, and measurement devices, can solve problems such as poor accuracy, overlapping peaks, and difficulty in applying to industrial sites, etc., to improve Detection sensitivity and effect of error avoidance

Inactive Publication Date: 2005-03-02
南京大陆中电科技股份有限公司
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Problems solved by technology

However, when a scintillation detector with poor resolution is used, it is difficult to use the stripping technique to accurately strip the peaks of the nuclides to be detected because the peak positions are not obvious and the peak positions overlap seriously, so its accuracy is relatively low. Poor, and its stability and reliability are also affected
In practical applications, since high-purity germanium is easily damaged by neutrons and requires daily maintenance (requ...

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  • Coal element analytic method and on-line detecting equipment based on spectral library least square method
  • Coal element analytic method and on-line detecting equipment based on spectral library least square method
  • Coal element analytic method and on-line detecting equipment based on spectral library least square method

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Such as figure 1 , 2 , 3 shown.

[0023] A coal element analysis method based on spectral library least square method, its steps are as follows:

[0024] a. Establish a standard spectrum library of the energy spectrum of each component in the coal flow by using experimental methods or simulation methods and store it in the computer;

[0025] b. The neutrons emitted by the 14MeV pulsed neutron generator are used to form fast and thermal neutrons through its moderator system, and irradiated on the coal flow, so that the fast neutrons and the oxygen and carbon nuclides in the coal flow are non-elastic Scattering, emitting prompt non-elastic characteristic gamma (γ) rays, causing thermal neutrons to react with other nuclides in the coal flow, and emitting prompt capture characteristic gamma (γ) rays;

[0026] c. Utilize the scintillation detector to receive the ...

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Abstract

The invention discloses the concrete steps of analysing method for coal element, which is based on the GenBank least square method and adopting a scintillation detector as the recording device and adopts the spectrum based least square method to make the spectrum analysis so as to avoid errors caused by current spectrum analysis technology and the structure of the on-line detecting device meet the necessity of the method. It adopts all of the information of gamma energy spectrum so as to avoid the error caused by spectrum stripping technology and enhance the sensitivity of detection, the reliability of measurement and the stability of the device.

Description

technical field [0001] The invention relates to a coal element analysis method and online detection equipment based on the least square method of a spectrum library. Background technique [0002] Coal composition detection equipment mainly uses neutron activation analysis technology to detect the content of main components in coal flow. The so-called neutron activation analysis technology is to use neutrons to bombard the coal flow, and the neutrons will have a specific nuclear reaction with a certain nuclide in the coal flow, producing characteristic gamma (γ) rays (like human fingerprints), according to the characteristic gamma (γ ) ray energy to determine the corresponding nuclide, according to the energy corresponding to the peak intensity (count) to determine the content of the nuclide. The on-line detection equipment mainly utilizes the prompt gamma (γ) neutron activation analysis technology, and its technical core and difficulties are device design and spectrum proce...

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Application Information

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IPC IPC(8): G01N23/222G01N35/00
Inventor 贾文宝宋兆龙梅义忠
Owner 南京大陆中电科技股份有限公司
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