Will the pressure of the flash tank affect the acidity in methanol?
Thread Content
The pressure of the methanol flash tank of the synthesis system is generally controlled between 0.35~0.45MPA, and the flow rate of flash gas under different loads is between 350~450 standard cubic meters. Will high pressure and small vent volume increase the acidity in crude methanol? If so, how serious will it be?
It will have an impact but not a big one because the acid value of methanol is mainly caused by the high content of formic acid and acetic acid. Formic acid and acetic acid are heavy components, but the decomposition of heavy light components such as methyl formate and ethyl formate will also produce formic acid and acetic acid. However, these light components can be processed in the pre-tower and released in the form of non-condensable gas, so the impact will not be great.
It will affect but not greatly the acid value of methanol. It is mainly caused by the high content of formic acid and acetic acid, which are heavy components.