ACS控制钙离子的数学分析

湿部系统中的钙离子会与羧酸根等阴离子类物质结合生成难溶的钙沉积物或非离子化的黏性物质,使白水封闭循环系统受到污染,并影响湿部稳定运行.将高羧基含量的自制化学品阳离子化羧甲基木薯淀粉(ACS)用于造纸湿部,可以有效控制钙离子的积累,较好地维持生产正常及产品质量稳定.在已有的大量实验基础上,采用数学分析的方法研究了 ACS添加量与纸料中钙离子浓度之间的交互作用,以及它们对纸料湿部性能参数和成纸性能的影响.结果表明,ACS添加量和钙离子浓度与纸料游离度、滤液浊度以及纸张Cobb值和各项强度性能指标的回归方程有较高的相关性,这充分表明钙离子浓度对湿部系统的清洁及纸料性质有一定的影响,而ACS对湿部系统中游离的钙离子具有捕捉及净化能力.

Mathematical Analysis of Calcium Ions Controlling by ACS

The increasing amount of Ca2+ will significantly affected the closing white water system.ACS is a kind of chemical agent prepared in our lab contains high carboxyl content and can shield the effect of Ca2+.The interaction between dosage of ACS and concentration of calcium ions in pulp and its effect on properties of wet-end and paper sheets was analyzed mathematically.The results showed that the correlation coefficient between dosage of ACS and concentration of calcium ions in pulp was high.It approved the improvement of pulp and paper properties was due to the calcium ions controlling ability of ACS.In practice,for achieving the certain pulp and paper performances,the dosages of ACS needed to add into the pulp can be calculated based on the concentration of calcium ions in the pulp.It would be meaningful to realize white water circuit closing.