Multi-target scanning type rapid sulfur detector

A scanning, sulfur measuring instrument technology, applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of measurement time and accuracy that cannot meet industrial requirements, large human error, long measurement time, etc., to reduce sample particle size and uniformity. The effect of the degree of influence, the small human error, and the short measurement time

Active Publication Date: 2014-06-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

This method of measuring sulfur based on chemical analysis needs to burn at high temperature, so the measurement time is long, and the equipment is used at high temperature for a long time, and the reliability of the equipment is also low; because it needs to use chemical reagents, it will cause serious damage to the environment. Pollution, causing damage to the health of users; because it is manual operati

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  • Multi-target scanning type rapid sulfur detector
  • Multi-target scanning type rapid sulfur detector
  • Multi-target scanning type rapid sulfur detector

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Embodiment 1

[0031] The X-ray tube high voltage 6 is 15000 volts, which can effectively excite the special X-ray fluorescence of sulfur in the sample; the angle between the X-ray emitted by the excitation light source and the surface of the sample 4 is 70 degrees, and the distance between the X-ray tube 1 and the sample surface is 34 mm, the diameter of the collimator 2 is 2 mm to ensure the optimal resolution of the sulfur meter.

[0032] The angle between the silicon drift detector 3 and the surface of the sample 4 is 70 degrees, and the distance is 16 millimeters. These are also to ensure that the analyzer obtains a better resolution; the silicon drift detector beryllium window is 0.5 millimeters to reduce the fluorescence spectrum The interference of other special X-ray fluorescence spectra on the special X-ray fluorescence spectrum of sulfur.

[0033] The excitation light source, detection device and digital multi-channel spectrometer 10 are fixed in a 3 mm iron box 5, which not only ...

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Abstract

The invention relates to a multi-target scanning type rapid sulfur detector. The rapid sulfur detector is composed of an excitation light source, a detector, a sample platform, an analyzer and a circuit output device, wherein the sample platform comprises a main disc, six sample boxes, motors, a gear and a bearing; on the condition of fixed points of irradiation, a computer is used for controlling the main disc and the six sample boxes to respectively do circular motion under the brake of the respective motors so as to realize multi-target multi-area scanning and reduce the influence of particle sizes and uniformities of samples; the excitation light source comprises a high-power X-ray tube, a collimator at the exit of the X-ray tube and an X-ray tube high voltage power supply; the detector comprises a silicon drift detector, a detector high voltage power supply, a load-sensitive pre-amplifier and a pulse shaping amplifier, and the silicon drift detector is arranged on the right side of the X-ray tube. The analyzer disclosed by the invention is a digital multi-channel spectrometer and is used for analyzing and treating original signals amplified by the amplifier and acquired by the detector and converting the original signals into energy spectrum for analysis, and finally the computer is used for data treatment and control.

Description

technical field [0001] The invention relates to a multi-target scanning type rapid sulfur measuring instrument, in particular to a multi-target scanning type rapid sulfur measuring instrument for analyzing the sulfur content in coal, which belongs to the field of element rapid analysis. Background technique [0002] The level of sulfur content in coal is an important index to evaluate the quality of commercial coal. On the one hand, it is a major influencing factor of coal quality pricing; on the other hand, for coal used for power generation, too high sulfur content will lead to corrosion of boiler tail flue. Moreover, due to the large amount of coal used for power generation, the sulfur in the coal produces sulfur oxides during the combustion process of the boiler, and is discharged into the atmosphere along with the flue gas, which greatly pollutes the surrounding environment, and in severe cases, it will form acid rain and affect people's normal life. , With the improve...

Claims

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Application Information

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IPC IPC(8): G01N23/223
Inventor 贾文宝凌永生单卿张焱黑大千
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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