摘要
通过分析研究不同时间、温度、二氧化氯用量对硫酸盐竹浆二氧化氯漂后卡伯值、白度、p H、黏度和得率的影响,来确定二氧化氯漂白的最佳工艺。将此工艺应用在DEp P中,比较分析相同有效氯条件下DEp P和CEH各漂段白度、卡伯值、返黄值、漂白浆的强度性能及漂白废水污染指标,来评价二氧化氯在多段漂白中的漂白效果及ECF和CEH对环境污染的程度。结果表明,硫酸盐竹浆最佳二氧化氯漂白工艺:70℃、2h、二氧化氯用量3.0%。打浆后发现,这两种漂白竹浆的强度性能都较好,其中DEp P漂白竹浆的各项强度性能更佳。DEp P漂终白度达81.8%ISO,比CEH高3%ISO且DEp P漂白废水的污染负荷比CEH漂白废水低得多,其中AOX(可吸附有机氯化物)含量为CEH的1/7,说明ECF不仅可以满足实际生产中对纸张白度和强度的要求,而且大幅度减轻对环境的污染,具有很好的环境友好性。
Optimal chlorine dioxide bleaching technology of kraft bamboo pulp was researched by measuring the Kappa number,brightness, pH, viscosity,yield, under different time, temperature, the dosage of chlorine dioxide. And the optimal technology of D stage was used in DEpP bleaching. The bleaching results of DEpP and CEH were compared by measuring brightness, Kappa number, post - color number, strength properties of the bleached pulp and pollution load of bleaching effluent. The results showed that the optimal chlorine dioxide bleaching process was found for 70 ℃, 2h, the dosage of chlorine dioxide 3%. The property testing of the sheets indicated that both bleached pulps have very good strength properties, and the strength properties of the DEpP bleached pulp are better. The brightress of DEpP bleached pulp is 81.8% ISO, 3% ISO higher than that of CEH. And the effluent loads of ECF bleaching are much lower than those of CEH bleaching,the AOX is only 1/7 of that of CEH bleaching. DEpP bleaching can not only satisfy the demand for paper brightness and strength, but also greatly reduce the environmental pollution and has a good environmental friendliness.
出处
《造纸科学与技术》
2015年第6期9-12,88,共5页
Paper Science & Technology
基金
陕西省西安市科技局技术转移促进工程项目(CX1256(8))
陕西省造纸技术及特种纸品开发重点实验室访问学者项目(12JS024)
作者简介
高仿，女，硕士研究生，主要从事植物资源综合利用研究。
通讯作者：田英姿，女，副教授，硕士生导师，主要从事植物资源综合利用方面的研究。
