Low-temperature methanol washing
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What are the reasons for the excessive total sulfur content in the low-temperature methanol washing unit?
Dude, your question is way too rough! Each case needs to be analyzed on its own; starting with the operational aspects: washing volume, temperature, pressure, degree of methanol regeneration, etc ； Equipment: internal leakage, damage to tower internals, etc ；
Low amount of circulating methanol, excessively high temperature for methanol absorption, incomplete methanol regeneration, and too low operating pressure in the absorption tower (excessively high hydrogen space velocity). . .
There are many reasons: changes in coal quality with high sulfur content, insufficient circulation volume, inadequate methanol regeneration, high system temperature, contamination of methanol, low system pressure, high CO2 content in the shift gas, and so on