Reasons for excessive carbon monoxide levels in the exhaust gas vent of low-temperature methanol washing process
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The low-temperature methanol washing system in our plant was developed by Dalian University of Technology. Why is the carbon monoxide level in the exhaust gas coming out of the exhaust gas scrubber not triggering any alarms during the day, while it remains above 100 ppm at night? Seek a solution
There is no illegal discharge; all process parameters are the same as during the day
Does the air pressure drop at night, causing fog?
It’s like this almost every night, even when there’s no fog
During the day, the temperature is relatively high, and exhaust gases disperse more quickly at night; they are less likely to remain trapped in the equipment area. Therefore, no alarm is triggered during the day, but an alarm is issued at night
How high are the emissions from your exhaust? When the wind is weak, the levels at the site exceed the allowed limits. There are two solutions available: the first is to raise the height at which exhaust gases are released to 150 meters; the second is to install an exhaust gas incineration device. Since there are no existing devices available as a reference for this second method, it has not yet been put into use – only a placeholder has been prepared. I hope this can help you
How to burn it at over 100 ppm? The method is not very reliable
The vent tube is also around 60 meters long