Methanol-water separation
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The reboiler of the water separation tower in Linde’s low-temperature methanol wash process uses medium-low pressure steam at 1.2 MPa; when the pressure drops to 1.14–1.15 MPa, the temperature of the sensitive plate in the methanol-water separation tower falls to 100°C, and it becomes difficult for this temperature to rise again. I would like to ask everyone if this is caused by a decrease in steam pressure? Is it still related to the amount of wastewater discharged? I would appreciate your advice.
This post was last edited by sqlzl on 2017-6-3 21:09. When the pressure is low, the corresponding heat output is reduced, as is the amount of steam produced. A lower pressure allows for an increase in the amount of steam used. Personally, I think it has nothing to do with the external discharge volume; at a temperature of 100 degrees, the COD level in the external discharge exceeds the allowable limits.
Does the gas consumption increase as the steam pressure decreases?
By the way, I’d like to ask everyone what the methanol level at the bottom of the tower is; in my case it’s 100 mg/L