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Analyser for spark through spectrum medium by laser induced

A technology of laser-induced breakdown and coal quality analysis, which is applied in the field of laser diagnosis and measurement, can solve the problems of high price and large volume, and achieve the effect of compact structure, small volume and convenient industrial installation

Inactive Publication Date: 2004-03-10
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] The invention proposes a laser-induced breakdown spectrum coal quality analyzer, which solves the problem of online rapid analysis of coal samples in current coal-fired power plants; for coal quality online measuring instruments imported by a small number of coal-fired power plants—Gamma-Metrics company’s online Coal quality analyzers are expensive and bulky, and an economical coal quality online rapid analyzer is designed and produced

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  • Analyser for spark through spectrum medium by laser induced
  • Analyser for spark through spectrum medium by laser induced
  • Analyser for spark through spectrum medium by laser induced

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Embodiment Construction

[0015] Such as figure 2 Shown, the sampling part of the present invention is installed in the pulverized coal of the coal-fired power plant and enters the combustor by the pulverizer before seeing figure 2 at the point indicated by the black dot 1 in ; image 3 The sampling section of the present invention shown consists of two parts: a small cyclone 2 and a quartz analysis cell 3 . A small cyclone separator 2 is used to take out 5-10 grams of pulverized coal, and the pulverized coal falling into the quartz analysis tank 3 is used as the analysis object.

[0016] Such as Figure 4 with Figure 5 As shown, the whole installation is divided into two floors: the first floor and the second floor. Before explaining the specific process of analysis and measurement, first introduce a mechanical control part in the device: the quartz analysis cell 2 is fixed on the analysis cell fixed platform 11 of the analysis part of the device, and the analysis cell fixed platform 11 is driv...

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Abstract

The invention includes sampling part and analyzing part. The analyzing part includes light source system, spectrum system, sequential control system and acquisition analysis system. The sampling part is composed of cyclone separator and quartz analysis pool under the former. In working condition, the quartz analysis pool taken off from the cyclone separator is fixed a fixed station driven by a motor. In the light source system, a filter is installed on emergent light of the laser. A plane mirror is installed at 45 deg of angle with emergent light. A convex lens setup perpendicular to emergent light is installed with its focus point on the quartz analysis pool. The instrument can measure main element, most of secondary elements and minority of trace elements. The sampling and measuring time is less than 5 minutes.

Description

technical field [0001] The invention belongs to the technical field of laser diagnosis and measurement, and in particular relates to a device for on-line rapid analysis of furnace coal. Background technique [0002] The infrastructure investment, economic operation, and environmental impact of coal-fired power plants are largely related to coal quality. In thermal power generation costs, coal costs account for 80%. Therefore, it is very important to understand and study the influence of various factors of coal quality on coal-fired power plants. Off-line coal quality analysis methods include some spectrochemical analysis methods such as gas chromatography, liquid chromatography, mass spectrometry, flame photometry and ICP-AES. These off-line coal quality measurement methods usually take several hours from sampling, sample preparation to reporting of test results. The detection results are seriously lagging behind the boiler combustion, which not only causes a waste of ene...

Claims

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Application Information

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IPC IPC(8): G01N21/73
Inventor 陆继东余亮英沈凯吴戈刘刚
Owner HUAZHONG UNIV OF SCI & TECH
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