Abnormal noises in online chromatographic analysis
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It is a chromatograph for on-line analysis, primarily used to measure total hydrocarbons and acetylene. These days, it has been making occasional strange noises, like sounds of something getting stuck. What’s going on here?
What brand of chromatography? I have some knowledge of chromatography and can discuss it.
The last edit to this post was made by tiger2010 on 2023-5-12 at 05:58. Please make a video at least, so everyone can hear the sound; having only an image isn’t enough – it’s meant to show whether people have used this brand or not Even if it has been used, it doesn’t necessarily lead to the situation you encountered, right?
This post was last edited by mutianly on 2023-5-12 08:20; the description is too simple. Is it a preprocessing box or an analysis table? Or other pipelines, the display section? Pre-treatment: three-way valve/filter/water vapor separator/heater, etc. Analyzer: Column cut-off valve/intake and exhaust valves/circuitry; the principle behind chromatography – PID, FID, TCD, laser, etc.; depends on the emission source.
The brand is KA2303 from Canada
2303 KA8000PLUS
This post was last edited by tiger2010 on 2023-5-12 at 18:06. Is your hydrocarbon analyzer also used in air separation? This is the first time I’ve seen an analyzer from this brand; the hydrocarbon analyzers for air separation units that I have worked with use FID detectors, and their flow path is as shown in the picture. Listening to the voice in your video, looking at the information in your pictures, and gathering related content makes it seem like there’s an issue with the preprocessing part (it’s best to first check its manual to have a general idea of where to look for problems).
There are some valves inside the online chromatography chassis that switch, and the carrier gas flows through as well; it’s normal to hear noises
Generally speaking, online analytical instruments are quite precise in operation, especially chromatographs. They contain various moving components such as sampling valves and chromatography switching valves, and the valve elements that serve a sealing function in these components need to be maintained regularly (through cleaning, application of specified lubricants, etc.) and replaced; otherwise, issues such as sticking, leakage, and internal leaks can occur, affecting the accuracy of the analysis results