Online analyzers for the measurement of trace NH3
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What methods are used to measure trace amounts of NH3 at the outlet of the synthesis shift section in coal chemical plants (≦2ppm), and is such monitoring carried out in other types of plants as well?
I don’t have a device for monitoring ammonia levels here
2PPm is too low; it’s difficult to detect, right? I’ve never dealt with detecting such a low concentration before.
My requirement for the inlet of this low-temperature methanol wash is below 20 ppm
The ammonia concentration is low, making monitoring difficult; the accuracy of the data is poor, so it has little practical value for guidance.
But this indicator here is very important, as it is directly related to the shutdown of the subsequent low-temperature methanol washing unit. How do other plants carry out inspections?
I have a laser multi-path analyzer with a detection limit of 20 PPb. Treatment is required. I’m not sure if you can accept it.
It depends on your processing method; we can detect 2 ppm, but we need to discuss some detailed aspects We specialize in imported laser gas analyzers, which can achieve a detection precision of PPB level
Measuring ammonia escape from flue gas also requires the detection of trace amounts of ammonia, which has always been a challenge both domestically and internationally; laser methods are mostly used for this purpose.