Emerson Chromatography
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Can inaccurate analysis of a single component occur when using a chromatograph to analyze components? What’s the reason? Emerson’s chromatograph is used to analyze natural gas components, but the CO2 measurement is inaccurate. Seeking help from experts
In natural gas analysis, the focus is generally on hydrocarbons up to carbon 6, while carbon dioxide in the sample is a component with strong retention. If the chromatography system consists of a single column, the accuracy of carbon dioxide analysis will be poor and the analysis time will be longer. If the column system consists of multiple column systems combined through pre-blowing, back-blowing, etc., the analysis performance will be better. The chromatograph of the Ai family is a Daniel product that can only perform relatively simple sample analyses; it is significantly inferior to true industrial online chromatographs.
The levels of all other components analyzed were normal; the carbon dioxide level was high, but in reality it isn’t that high. What is the reason for this?