Online analysis
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I would like to conduct an online analysis to determine whether H2 and CO gases have leaked into medium-pressure steam pipes, for online monitoring. Could an infrared analyzer be used for this purpose? Please explain the measurement process briefly. Thank you!
Yes, complex preprocessing is required: cooling, temperature reduction, and water removal. Add to that the exorbitant price of the infrared analyzer, along with comprehensive maintenance services on a daily basis and a controlled temperature and humidity working environment. For the specific procedures, refer to CEMS; the cost for one set is over 150,000. Is that acceptable? Online analyzer – It’s not easy to say I love you: lol
Upstairs, is there a manual? Send me one: lol
Don’t mislead people casually; infrared analyzers can analyze CO, but not H2. To analyze hydrogen, a thermal conductivity type analyzer is required. Pre-treatment is very important; decompression, condensation, water removal, and filtration must all be done properly.
This depends on the amount of H2 and CO that leak into the medium-pressure steam. For the detection of trace gases in steam, using infrared gas analyzers may not be a good option. If these are trace components, they might dissolve in the condensate water during sample processing, and infrared gas analysis is unable to detect such dissolved trace components. Moreover, removing water is a challenging task that is difficult to accomplish. The trace amount of hydrogen in steam can be determined by measuring the dissolved hydrogen after condensing the steam into water; we have data on this. For carbon monoxide, it is difficult to detect using conventional methods; one can ask whether online chromatography is possible.
Could you send me the materials from upstairs to my email? Thank you! xzw848@sohu.com
Online analyzers can certainly be used to analyze the above components; the key is probably the cooling process.
Yes, condensation, drainage, filtration, pressure reduction – and in the end, nothing left. Bizarre process conditions!
This post was last edited by qugd on 2016-8-25 at 11:51. Do you think it’s possible to follow your idea, that is, to mainly focus on cooling? What state will the medium be in after cooling? Condensate water, right? Then conduct targeted analysis on hydrogen and carbon monoxide? What instrument (or what principle does the instrument rely on)? Do hydrogen and carbon monoxide exist in water in a dissolved state? Or does it become gaseous (in the form of bubbles)? When steam condenses into water, its volume is reduced to a few hundredths of its original size. Have you calculated how much gas can be separated? Online analyzers can certainly carry out the analysis of the above components, but how can this process be carried out accurately, and what is the basis for that?