What is the reason why the liquid at the bottom of the methanol-water separation tower in low-temperature methanol washing is acidic?
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What is the reason why the liquid at the bottom of the methanol-water separation tower in low-temperature methanol washing is acidic? Is it due to acidic substances still present in the water, or are it the H ions produced by the ionization of methanol? I’d appreciate the insights of experts.
This post was last edited by 654262293 on 2016-9-1 at 11:50. It is caused by acidic gases such as CO2, H2S, and HCN absorbed in methanol being sent into the methanol-water separation tower. Furthermore, the washing water from the exhaust gas scrubber becomes acidic due to the dissolution of CO2 and H2S, and when it is sent to the methanol-water separation tower, this also causes the wastewater at the bottom of the tower to become acidic.
This post was last edited by Ye Xiang on 2016-9-2 at 16:15
Under normal circumstances, there is not much impact, but when the system experiences fluctuations, the effect is significant; it is necessary to add alkali to control the pH value
Hello, with such a high temperature of the wastewater at the bottom of the tower, are there also acidic gases such as CO2 and H2S?
It is acidic because acidic gases such as CO2 and H2S are dissolved in it
The acidic gas H2S dissolves, resulting in acidity