Drying tower to remove moisture
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Why should the moisture level in the drying tower be controlled at 0.1 g/m3?
Excessive moisture is not beneficial for either the catalyst or the subsequent systems; if condensation acid forms, it causes severe corrosion to the equipment
I know this; could you analyze it in more depth?
The purpose of drying is to remove water, as water can cause significant damage to subsequent systems. Any issue in any part of the system, from the fan impellers to the pipelines used for conversion, can affect normal production
The lower the moisture control during drying, the better; it is difficult to ensure a level below 0.1 under current conditions.
The lower the moisture content in the flue gas, the lower the corresponding dew point; as a result, it becomes more difficult for the downstream conversion equipment to produce condensed acid, and less acid mist is generated within the absorber tower.
With less moisture, there is less condensation acid, less acid mist, less corrosion, less damage to the catalyst, and less resistance – which helps to reduce many problems
I understand this; that’s why it’s set at 0.1, rather than 0.2 or something else
It’s below 0.1; if it’s higher, those problems arise. If this value is set even lower, it becomes uneconomical, as current technology isn’t capable of achieving that