Method for simultaneously, rapidly and quantitatively analyzing multiple gas pollutants in flue gas

Abstract

The invention relates to a method for simultaneously, rapidly and quantitatively analyzing multiple gas pollutants in flue gas, which specifically comprises the following steps: S1, data preprocessing: acquiring an absorption spectrum of gas to be detected under an ultraviolet band, intercepting the band according to a characteristic absorption spectrum of target gas, carrying out differential treatment on the intercepted spectrum, and then carrying out Fourier transform; s2, modeling and prediction: if the intercepted characteristic wave band is a pure characteristic spectrum wave band of thetarget gas (i.e., the absorption of other gases except the target gas in the wave band or the absorption after data preprocessing can be ignored), selecting a unary correction regression model for modeling or prediction, otherwise, selecting a multivariate correction regression model for modeling or prediction. According to the method for simultaneously, rapidly and quantitatively analyzing the multiple gas pollutants in the flue gas, the problems of cross interference and spectrum overlapping among the multiple gases can be effectively solved, and simultaneous, rapid and accurate detection of the concentrations of the different gas pollutants in the flue gas is achieved.

Description

technical field [0001] The invention relates to the technical field of gas concentration detection, in particular to a method for simultaneous rapid quantitative analysis of multiple gas pollutants in flue gas. Background technique [0002] Along with the rapid development of my country's national economy, there have also been some phenomena of air pollution. Air pollution threatens people's life, health and safety, and has caused great damage to the living environment. The source of atmospheric pollutants is mainly caused by man-made pollution. People will produce air pollutants in economic production activities and life, such as waste gas (such as carbon dioxide) in industrial production processes (such as thermal power plants, steel plants, etc.) , sulfur dioxide, nitrogen oxides, etc.); another example is the exhaust gas emitted by people's vehicles, and the toxic and harmful gas pollutants produced by burning garbage in daily life. Atmospheric pollutants will have lon...

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Problems solved by technology

[0004] In order to overcome the above-mentioned deficiencies in the prior art, the present invention proposes a method for rapid quantitative analysis of multiple gas pollutants in flue gas at the same time, which solves the problem of simultaneous, fast and accurate analysis of the concentration of each gas in the case of multi-gas cross interference. Technical issues detected

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