How to detect dust at the flue gas desulfurization outlet?
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This post was last edited by slll611 on 2016-1-18 at 21:56. May I ask the experts out there； How to measure the dust concentration at the flue gas desulfurization outlet, and how are the tests conducted? ? ? ?
The detection of dust concentration at the flue gas desulfurization outlet is carried out through direct sampling
All of these are currently equipped with online monitoring systems; you can contact the manufacturers of such systems, as the data obtained in this way is more suitable for analysis.
Online dust analysis – installing a CEMS system comes at a high cost
CEMS are available; I want to use a portable detector to compare it with the CEMS.
You can simply buy a portable smoke detection and analysis device; around 20,000 yuan should be sufficient
If there are any requests, please state them directly; everyone here in Haichuan helps one another, so there’s no need to use phrases like \"kneeling in gratitude\".
Why is dust still measured at the outlet of wet flue gas desulfurization? High dust levels prevent it from entering the absorption tower, and any amount that does get in is washed away by water.
These days, for wet methods, the environmental protection agency checks dust emissions at chimneys
And if it’s a wet type, the flue gas passes through a desulfurization system and contains a large amount of water vapor; therefore, the data obtained using dry-type online analyzers are inaccurate.
In the case of wet flue gas desulfurization, online dust meters of any type will not work; don’t be deceived. Anyone who sells them to you is only doing it once and will not be in touch again. The correct method is to use the constant-speed sampling approach: take samples, evaporate the water, and then weigh them. However, if the dust concentration is very high, it may cause problems with sampling, as the sampling tube can easily get clogged. For dry desulfurization, either online dust meters or portable ones can be used. However, portable versions are certainly not as accurate as online ones, so one should be prepared for that.