【作者】 孙先启； 侯庆喜； 周立春； 史海真；

【Author】 SUN Xian-qi;HOU Qing-xi;ZHOU Li-chun;SHI Hai-zhen;Quzhou Branch of China National Pulp and Paper Research Institute;Tianjin University of Science & Technology;Longyou Specialty Paper Research Institute;

【机构】 中国制浆造纸研究院有限公司衢州分院； 天津科技大学； 龙游县特种纸科技创新管理服务中心；

【摘要】 在笔者以前的研究中,采用连续补充药液保持其浓度恒定的"等浓度漂白"法提高了H₂O₂漂白的效率。为了进一步表明等浓度漂白方法的优点,本研究详细探讨了等浓度漂白反应的历程。结果表明,在漂白过程中纸浆的白度、漂白系统中木素、乙酸、聚木糖浓度以及漂白液的COD_Cr浓度在漂白前期快速增加,在漂白中后期呈稳定的缓慢增加态势;H₂O₂消耗量与纸浆白度的提高有较好的对应关系。更多还原

【Abstract】 In our previous studies,the Iso-concentration（IC） bleaching method（which maintained constant chemical concentrations by supplementing continuously chemical） significantly improved the efficiency of peroxide bleaching.This study investigated the reaction process in the Iso-concentration bleaching.The results indicated that the increasing of pulp brightness,COD_Cr concentration of the bleaching liquor,and the concentrations of reaction products（including lignin,polydextrose,polyxylose,and acetic acid） proceeded via a rapid initial phase followed by a slow and even phase.There was a better corresponding relationship between the peroxide consumption and the pulp brightness development.更多还原