What substances may be formed in the methanol-water separation tower of low-temperature methanol washing, and what is an appropriate pH level for the wastewater discharged?
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What substances may be formed in the methanol-water separation tower of low-temperature methanol washing, and what is an appropriate pH level for the wastewater discharged?
The water separation tower for low-methane content is, in essence, a series of distillation towers. The residual liquid from these distillation towers contains substances whose components cannot be separated from each other. It’s best to maintain a pH level of 7-8; too low a pH leads to acid corrosion, while too high a pH causes alkali corrosion. However, the water separation tower is more likely to be acidic, as it contains acidic gases that are soluble in water.