Issues with the online instrument readings for SO2 in sulfur exhaust gases
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This post was last edited by liaifeng on 2018-7-28 at 10:49. The readings of the online instruments for SO2 in our facility’s sulfur exhaust gases have been fluctuating constantly. Even when production is operating steadily, the SO2 levels suddenly rise sharply before dropping again. The instruments have been checked and are functioning properly; what could be the cause?
Is the ratio of hydrogen sulfide to sulfur dioxide stable? And what are the exhaust gas treatment processes?
In most cases, the issue is caused by inaccurate analysis data from the analytical instrument itself
Is it caused by the regular purging of the instrument air? Generally, to prevent blockages in the sampling tubes, such reverse airflow is used at the furnace’s viewing ports or at various temperature control points to ensure the proper operation of the instruments. If it’s regular, it’s no big deal.
All the necessary technical measures are in place; it’s just that certain occurrences happen more frequently, as if they are more common on rainy days
Check if there are any issues with the PID parameters.
Is the ratio highly related to PID parameters? At present, we mainly rely on setting limits to manually adjust air distribution
Have you analyzed the interlocking functions online? Is there automatic air distribution?