Online gas-solid two-phase detection method for coal characteristics based on laser induction, and apparatus thereof

Abstract

The present invention provides an online gas-solid two-phase detection method for coal characteristics based on laser induction, and an apparatus thereof. The apparatus comprises a sampling pipe, a coal powder conveying pipe, a cyclone separator, a coal powder falling pipe, a measurement room and a spectrum detection system. The detection method comprises that: the coal powder is subjected to continuous sampling at a proper position on an air-powder pipeline by the sampling pipe, wherein the air-powder pipeline is arranged between a coal mill outlet and a burner inlet; a cycle process of sampling, measuring and returning of the coal powder is realized with the effect of compressed air. According to the present invention, with adopting the measurement system of the measurement method, the taken gas-solid two-phase coal powder particles can be subjected to laser detection only after the simple gas-solid separation by the cyclone separator, and the sample preparing is not required; the gas conveying manner is adopted, and the mechanical transmission apparatus is not used so as to contribute to long term and reliable operation of the whole apparatus in the field environment, and really realize the online detection of the coal characteristics.

Description

technical field [0001] The invention relates to the technical field of laser diagnosis and measurement, in particular to a gas-solid two-phase detection method and device based on online detection of laser-induced coal quality characteristics. Background technique [0002] With the continuous development of industry, coal energy has become increasingly scarce, resulting in higher and higher requirements for the quality and composition of coal and combustion efficiency. The traditional method is to conduct off-line analysis after sampling the raw coal. It generally takes several hours from sampling, sample preparation to reporting of test results, and the test results are seriously lagging behind the boiler combustion. This not only causes a waste of energy to a certain extent, but is not conducive to the real-time control and optimal operation of the unit. Therefore, it has become a top priority to adopt advanced and fast analysis methods, especially to develop an effective ...

AI Technical Summary

Problems solved by technology

The detection method adopted has no mechanical transmission device, which is used to ensure the reliability of the long-term on-site operation of the analysis device, solves the problem of complex online detection and measurement methods and devices for coal entering the furnace, and can realize real-time, continuous and rapid detection of coal entering the furnace Analyze, display the analysis results, and provide them to the relevant control system

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