Coal on-line analyse equipment based on laser induced spectral and nerve network technology

Abstract

An on-line detection and analysis device for coal quality is used to solve the difficult problem of elemental analysis of coal quality and on-line measurement of industrial analysis indexes in the industrial production process. The entire detection device includes a negative pressure sampling component, an analysis box, a signal acquisition control module, a protection component, a spectrum acquisition and analysis component, a neural network-based signal processor and a remote signal transmission interface. The analysis sample is irradiated with laser light to induce an induced spectrum. The induced spectrum is collected by the CCD image sensor and the image acquisition control circuit, and the characteristic element content vector E in the raw coal is calculated by the signal processor, and the vector E is sent to the The BP neural network is used for conversion to obtain the industrial analysis results of coal quality such as calorific value, moisture, ash, volatile matter and fixed carbon, and the neural network is used to predict the slagging index of raw coal and the melting point temperature of ash. Compared with the conventional technology, the method has the characteristics of high adaptability of coal types and accurate conversion results.

Description

1. Technical field [0001] The invention belongs to the field of automatic measurement technology and the field of application of artificial intelligence technology, in particular to an instrument and system for elemental analysis of coal quality in industrial production process and on-line measurement of industrial analysis indexes. 2. Background technology [0002] With the development of the national economy, the consumption of raw coal has continued to increase. In the past two years, the supply of coal resources in the country has been tight, especially the coal used for electric power is in an all-round emergency. Coal supply is increasingly market-oriented and diversified, resulting in increased fluctuations in coal quality, miscellaneous coal types, and increased difficulty in controlling coal quality into the furnace, which makes the coal fired by the boiler deviate from the designed coal type, and the stable combustion of the boiler is damaged, resulting in obvious e...

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Problems solved by technology

[0010] The problem existing in the existing technology is that the sampling system is difficult to adapt to different industrial environments. For example, in the process of conveying by belts, pipelines, wind power, automobiles and other transportation machinery, it is necessary to replace the sampling device according to different transportation machinery in order to meet the requirements of automatic analysis. Require

Optical lenses and mirrors are used in laser spectrum analysis related equipment. When there is vibration, slight changes in the positions of optical lenses and mirrors will have a greater impact on the measurement results, thus affecting the normal use of the equipment

In addition, in the process of industrial production, operators are generally concerned about the industrial analysis results of raw coal. Due to the change of coal types, it is difficult to use a unified formula to express the conversion from elemental analysis to industrial analysis results. The existing technical solutions do not provide operators The required industrial analysis results limit the use of this type of equipment

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