碱度映射铵根浓度控制三元前驱体制备的统计分析与生产实践

The statistical analysis and production practice of alkalinity mapping ammonium concentration controlling ternary precursor preparation

使用碱度反映前驱体生产过程中的氨碱环境可以避免使用甲醛,并减少人为测量误差对反应过程的影响,本文通过理论分析了碱度映射铵根浓度的可行性,并统计分析了两者之间的数值关系,建立了基于计算和实际测量偏差的目标规划模型并利用Matlab进行求解,最后通过实际生产过程中前驱体粒度和表面形貌的变化特点进行验证,结果表明:理论数值铵根质量浓度为碱度的8/7倍,比例系数上线性拟合值和平均值略大于理论值;随着设计铵根质量浓度的增加,其对应系数呈现下降趋势,铵根质量浓度的计算值和测量值偏离程度增大;计算值和测量值之间偏差范围小于±0.3均可达到生产要求,但是采用碱度控制生产,前驱体的粒度波动性小,球形度更高。

The ammonia alkali environment in the production process of using alkalinity reaction precursor is help-ful to avoid the influence of formaldehyde and human measurement error on the reaction process.Through theoreti-cal analysis and statistical analysis of the numerical relationship between the two,a target planning model based oncalculation and actual measurement deviation is established and solved by MATALB.Finally,the change character-istics of precursor particle size and surface morphology in the actual production process are verified.The resultsshow that the theoretical value of ammonium concentration is 8/7 times of alkalinity,and the proportional coeffi-cient is linear.The combined value and the average value are slightly larger than the theoretical value;with the in-crease of the designed ammonium concentration,the corresponding coefficient shows a downward trend,the greaterthe deviation between the calculated value and the measured value is;the deviation between the calculated valueand the measured value is less than±0.3,which can meet the production requirements,but the particle size fluc-tuation of alkalinity control is small,and the sphericity of the precursor is higher.