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

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...

AI Technical Summary

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 (requires liquid nitrogen refrigeration), it is mainly used in laboratories, and it is difficult to apply to industrial sites

In the industrial field, the most widely used method is to use the on-line scintillation detector as the receiving sensor of the gamma (γ) energy spectrum, and the full-energy peak method is currently widely used to solve the gamma (γ) energy spectrum of complex samples. It will bring a relatively large error and it is difficult to meet the requirements of use

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