Three-energy coal ash content online monitoring device

A monitoring device, a technology for coal ash, which is applied in the directions of measuring devices, analyzing materials, and using radiation for material analysis, etc., can solve the problems of large measurement errors and large ash changes.

Active Publication Date: 2011-06-15
内蒙古呼和浩特市立信电气技术有限责任公司 +1
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Problems solved by technology

At present, the technology of using dual-energy gamma ray to detect the ash content in coal is very mature, but in many cases, due to...

Method used

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  • Three-energy coal ash content online monitoring device
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  • Three-energy coal ash content online monitoring device

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with accompanying drawings and implementation.

[0031] Such as figure 1 shown.

[0032] The gamma photons emitted by the low-energy gamma source Am2416 and the medium-energy gamma source Cs1377 irradiate the coal sample 10 through two adjacent collimation holes, and the low-medium energy gamma rays passing through the coal sample are detected by the lanthanum bromide detector 1 Receiving, the lanthanum bromide detector is connected to amplifier 2, and amplifier 2 is connected to one of the two channels 5 of the multi-channel data analysis spectrometer, which is used to record low-energy gamma and medium-energy gamma spectral signals, so as to obtain ash content response and mass thickness Response: low-energy gamma irradiates on the coal sample, and at the same time excites the characteristic X-ray fluorescence of iron, calcium, and aluminum in the coal sample, uses silicon drift detector (SDD) 3 to...

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Abstract

The invention relates to a three-energy coal ash content online monitoring device which comprises a low-energy gamma source Am241, an intermediate-energy gamma source Cs137, and a lanthanum bromide detector for receiving the low-energy and intermediate-energy gamma rays, wherein gamma photons emitted by the low-energy gamma source Am241 and the intermediate-energy gamma source Cs137 irradiates the coal sample in a sample container; the output terminal of the lanthanum bromide detector is connected with the input terminal of a multi-channel data analysis spectrometer; the collected gamma energy spectrum information and the characteristic X-ray spectrum information are transmitted to a data processing and spectrum unscrambling system; and the data processing and spectrum unscrambling system is used for processing the data. The three-energy coal ash content online monitoring device can be used for coal sampling and automatic rapid detection of as-received coal vehicles without bypass belts, and can be mounted and detected only by slightly changing the structure of the rear end of the sample container.

Description

technical field [0001] The invention relates to a novel three-energy coal ash on-line monitoring device, referred to as a novel coal ash analyzer. The ash analyzer uses X fluorescence technology to detect the calcium and iron content in coal, uses low-energy gamma to detect the change of ash composition in coal, uses medium-energy gamma to detect the mass density of coal, and uses the mass density measured by medium-energy gamma to correct Due to the impact of changes in coal mass density, especially the iron and calcium content detected by X-ray fluorescence technology to compensate for the impact on ash caused by changes in coal types, reduce the impact of changes in coal types on ash measurement, and effectively increase the ash content Measurement stability. Background technique [0002] At present, the use of gamma ray technology has been used as a routine technology in various measurement and analysis. It has many advantages that other analytical techniques do not ha...

Claims

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Application Information

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IPC IPC(8): G01N23/02G01N23/223
Inventor 贾文宝
Owner 内蒙古呼和浩特市立信电气技术有限责任公司
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