METHANOL PURIFICATION SYSTEM, 2012 TAPPI PEERS Conference

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Methanol is formed as a by-product of the kraft pulping process. Due to its high relative volatility to water, a large fraction of this methanol will be present in the vapour phase and therefore can be captured in a relatively small foul condensate stream. Many kraft facilities, including the Alberta Pacific Forest Industries (Al-Pac) mill, operate a foul condensate steam stripping system, producing methanol rich stripper off gas (SOG).