What is the purpose of crude methanol distillation?
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What is the purpose of crude methanol distillation?
Impurities are removed because there are many side reactions in methanol synthesis that produce numerous by-products; through distillation, relatively pure methanol that meets the requirements of downstream users is obtained
It must be that a relatively pure methanol has been obtained. Can 60% and 99% methanol be the same?
The purpose of distillation is to remove water and organic impurities from crude methanol using this process, thereby producing methanol of varying purities depending on the required standards； Most impurities were removed, with some of them reduced to trace levels that do not affect the use of pure methanol.
Distillation is a separation process, and the distillation of crude methanol aims to remove as many other components and impurities as possible from methanol!
Some downstream processes for methanol require a very high level of purity for methanol; for example, when methanol is used to produce acetic acid, if the ethanol content in methanol is too high, the propionic acid content in the acetic acid will also increase