蔗渣氧脱浆二氧化氯漂白工艺参数的优化  

Optimization of Process Parameters for Chlorine Dioxide Bleaching of Oxygen-Delignified Bagasse Pulp

作　　者：李军[1] 徐刚[1] 徐峻[1] 莫立焕[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室∥植物资源化学与化工联合实验室,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2013年第1期105-111,共7页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家"973"计划项目(2010CB732205);制浆造纸工程国家重点实验室青年创新基金资助项目(x2qsC7100640)

摘　　要：采用三因素二次通用旋转组合实验设计,对蔗渣氧脱浆二氧化氯漂白的主要工艺参数(ClO2用量、NaOH用量和漂白时间)进行了优化,建立了工艺参数与纸浆卡伯值、白度及可吸附有机卤化物(AOX)产生量之间的二次多项式非线性回归数学模型.结果表明:通过实验设计建立的数学模型回归显著,失拟不明显;3个工艺参数对纸浆卡伯值、白度及AOX产生量的影响由大到小的顺序均依次为ClO2用量、漂白时间、NaOH用量;在优化模拟得到的较佳工艺条件(ClO2用量0.79%,NaOH用量0.43%,漂白时间53 min)下,纸浆卡伯值为1.83,白度为73.3%ISO,废水中AOX质量浓度为10.8 mg/L,与验证实验得到的纸浆卡伯值(1.76)、白度(75.0%ISO)和废水中AOX质量浓度(11.3mg/L)接近.Three-factor quadratic general rotary experiment design was made to optimize three main process parameters of the chlorine dioxide bleaching of oxygen-delignified bagasse pulp, namely, the CIO2 dosage, the NaOH dosage and the bleaching time. Besides, a quadratic polynomial nonlinear regression model describing the relationships between the process parameters and the Kappa number, the brightness as well as the absorbable organic halide （AOX） content was constructed. The results show that the constructed regression model passes the significance test and fits well, that the three parameters affect the Kappa number, the brightness and the AOX content in a order of CIO2 dosage 〉 bleaching time 〉 NaOH dosage, and that, in the optimal conditions, namely a CIO2 dosage of 0. 79%, a NaOH dosage of 0. 43% and a bleaching time of 53 min, the predicated Kappa number, brightness and AOX content respectively reach 1.83, 73.3% ISO and 10. 8 mg/L, which are close to the experimental values of 1.76, 75.0% ISO and 11.3 mg/L.

关 键 词：蔗渣浆 二氧化氯漂白 工艺优化 卡伯值 白度 可吸附有机卤化物 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]