【摘要】 草浆黑液硅含量高,寻求其除硅方法为国内外关注.我们用SCA-1絮凝剂溶液作脱硅剂,按三因子二次回归正交设计安排脱硅试验,先以硅酸钠溶液作模型,定量研究了除硅率与硅酸钠溶液中硅含量、pH值和絮凝剂用量之间的关系,得到回归方程(1),进而再用模型黑液和草浆黑液验证,得回归方程(2),它能较好拟合实验结果,并可用于指导草浆黑液的除硅工艺.更多还原

【Abstract】 Straw pulp black liquor contains a great amount of silicon. Close attention has been paid at home and abroad to the development of desilicating method. With SCA-1 flocculent solution as desilicating agent, the experiment was based on a three-factor, quadratic regression orthogonality design. First taking the solution of sodium silicate as model, then studying quantitatively the relationship between the desilicating rate and the silicon content of the solution, the pH value and the adding amount of flocculent SC A-1, we come to the regression equation(1), which is tested and verified by the reuse of the model black liquor and the straw pulp black liquor, thus the regression equation (2) is obtained that fairly fits the result of the experiment and can be used as the instruction of the desilicating technology of the straw pulp black liquor.更多还原