麦草烧碱-蒽醌法蒸煮产生甲醇的历程及经验模型  

Methanol Formation Process and Experiential Model of Wheat Straw Soda-AQ Pulping

作　　者：刘秋娟[1] 周晓林[1] 肖贵华 张成伍[1] 

机构地区：[1]天津科技大学天津市制浆造纸重点实验室,天津300457

出　　处：《中国造纸》2013年第12期13-17,共5页China Pulp & Paper

基　　金：国家自然基金资助项目(项目编号:21077076)

摘　　要：研究了麦草烧碱-蒽醌法蒸煮产生甲醇的历程，并建立了甲醇产生量的经验模型。实验得出，当蒸煮温度低于80℃时，甲醇产生速率较慢；80～155℃的升温阶段，甲醇产生速率最快；155℃下的保温阶段甲醇产生速率略变缓，但是仍然有较多的甲醇生成。用碱量增大，甲醇的产生速率增大。当蒸煮温度升高至小放气温度（105℃左右）时，黑液中甲醇的浓度为0．2kgt黑液以上，约为总甲醇产生量的50％。模型检验结果表明，在常规蒸煮条件下，两个经验模型可以较准确地对麦草烧碱-蒽醌法蒸煮过程中的甲醇产生量进行预测和估计。Methanol formation process and experiential model of wheat straw soda-AQ pulping were studied. The results showed that in the in- itial phase of the cooking methanol was generated slowly. As temperature was higher than 80℃, the methanol was generated quickly in tem- perature raising stage. By the end of the cooking, the rate of methanol generation was slow. In the initial phase of the cooking, at tempera- tures below 105℃, about 50% of the total amount of methanol was formed. Experiential models of the methanol formation during soda-AQ pulping process were established. And the result of model checking showed that these models could be used for predicting the methanol for- mation during the conventional soda-AQ pulping process.

关 键 词：甲醇 麦草 烧碱-蒽醌法蒸煮 历程 经验模型 

分 类 号：TQ223.121[化学工程—有机化工]