摘要
用3,5-二水杨酸法测黑液里还原糖含量。通过正交试验法,探讨了黑液质量分数、反应温度、硫酸质量分数及搅拌时间对黑液酸析前后还原糖去除率的影响,得出的最佳工艺条件是:黑液质量分数为10%,反应温度为700℃,硫酸质量分数为10%,搅拌时间35 min。
The method of 3,5-dinitrosalicylic acid was applied to determine the content of reducing sugar of alkaline black Liquor. The effects of the concentration of black liquor, the reaction temperature, sulfuric acid density and the stir time on the removal rate of reducing sugar before and after acidification are studied. Based on the experiment, the optimum reaction conditions are： 10% black liquor, temp. at 700 ℃, 10% sulfuric acid and time for 35 minutes.
关键词
碱性造纸黑液
还原糖
去除率
正交试验法
Alkaline pulp black liquor
Reducing sugar
Removal rate
Cross test
