麦草新氨法蒸煮脱木素动力学研究  

Reaction kinetics in NH_4OH-KOH-AQ pulping of wheat straw

作　　者：苏玉[1] 黄国林[1] 冯洪健 

机构地区：[1]东华理工大学化学生物与材料科学学院,江西南昌330013

出　　处：《江西化工》2014年第4期109-112,共4页Jiangxi Chemical Industry

基　　金：江西省自然科学基金(项目编号:20132BAB203019)

摘　　要：在合适的蒸煮工艺条件下,研究了麦草NH4OH-KOH-AQ法制浆过程脱木素动力学。实验结果表明,在大量脱木素阶段,脱木素反应对残余木素呈表观一级、对OH-呈0.38级,反应的活化能为44.12 k J/mol。脱木素速度方程为:-dL/dt=85.14exp(-5309/T)LCOH-0.38。The reaction kinetics of in NH_4 OH - KOH - AQ pulping of wheat straw were studied in pulping experiments car- ried out under constant and well - defined conditions. The results showed that the delignification during the initial delignifi- cation phase was found to be pseudo first order with respect to residual lignin and 0.38 with respect to residual alkali. The activation energy of the delignification reaction was 44.12 K J/tool and rate equation of delignification was-dL/dt=85. 14exp （-5309/T）LC_OH-^0.38 for first delignification phase.

关 键 词：麦草 NH4OH-KOH-AQ法制浆 反应动力学 

分 类 号：TS713[轻工技术与工程—制浆造纸工程]