Issues related to the addition and subtraction in low-temperature methanol washing
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For the methanol-water separation tower in the low-temperature methanol washing process, we don’t have a place where we can add alkali at the moment; I would like to ask where we should add it Is it necessary to add a pump for adding alkali? Does adding alkali need to be continuous?
I’ve seen systems where ammonia is added to control alkalinity; those systems use an ammonia cooler, and the ammonia can be added directly. However, it’s necessary to address the issue of ammonium carbonate crystallization
We use an alkaline pump to add it to the condensate flowing from the exhaust gas scrubber tower to the methanol-water tower, and it is added continuously
Ours seems to be added to the deionized water in the exhaust gas scrubber, and then after scrubbing the exhaust gas, it goes to the methanol-water separation tower!
Well, it’s added to the water separation tower to maintain the pH level
We didn’t add it directly. The pipeline is severely corroded
In our company, deionized water is added to T2206, and then it circulates with tower T2205 in order to clean the trays of the methanol-water separation tower in T2205.
We add it directly at the bottom of the tower, keeping the pH value between 8 and 10, and add it continuously
Ammonia, at low wash levels, reduces the absorption capacity for methanol, which has a significant impact on the system, right?