Change the operating conditions of the ammonia washing tower
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I would like to ask everyone: how is the stripping gas from the ammonia conversion tower handled in your area? Here, it is sent to sulfur recovery, but it affects the quality of sulfuric acid! ! Our sulfur recovery uses the WSA process for sulfuric acid production
The acidic gases from the stripping tower are vented through acid flares. We also use the WSA process; it is normal for the water content in these gases to be high, as this affects the acid concentration. Additionally, the presence of ammonia in the gases can cause fluctuations in the acid mist in the WAS exhaust gases. I wonder if you have them?
Yes, in the past we also sent gas to the flare. Due to the long pipelines and the large amount of water vapor present, the liquid storage tank connected to the flare became overloaded with water. Additionally, strict environmental regulations came into play, so the company’s management ordered that the stripped gas be sent to the sulfur recovery unit. This resulted in the sulfate having an unacceptable color; therefore, only part of the gas could be sent there while the rest had to be vented. This problem has not been resolved to this day.
The acid mist is quite stable, remaining at zero; it’s just that the NO compounds in the exhaust gases are slightly high! ! ! !