| Methanol formation processes of soda-AQ pulping of bagasse, reed and silvergrass were mainly studied. The results showed that methanol formation processes of bagasse, reed and silvergrass were significantly different. In the initial phase of cooking for bagasse and reed, methanol generated slowly. As temperature was higher than 90℃ for bagasse, higher than 105℃ for reed, the methanol generated quickly. While for the silvergrass soda-AQ cooking, in the temperature range from 50℃ to 160℃, methanol formation increased linearly with temperature. By the end of cooking, the rate of methanol generation was slow. In the initial phase of cooking of bagasse, reed and silvergrass, 40%~50% of the total amount of methanol was formed at temperature 105℃. |
