偏钛酸水解工艺参数建模分析与优化  

Modeling analysis and optimization of hydrolysis process parameters of metatitanic acid

作　　者：曾小义 马丹 梅其政[1] 刘星 陈枫森 ZENG Xiaoyi;MA Dan;MEI Qizheng;LIU Xing;CHEN Fengsen(College of Power Engineering,Chongqing Electric Power College,Chongqing 400043,China;College of Materials Science and Engineering,Sichuan University,Chengdu 610065,China;Chongqing Yu’nan Water Supply Co.,Ltd.,Chongqing 401320,China)

机构地区：[1]重庆电力高等专科学校智能工程学院,重庆400043 [2]四川大学材料科学与工程学院,成都610065 [3]重庆渝南自来水有限公司,重庆401320

出　　处：《重庆理工大学学报（自然科学）》2022年第12期281-288,共8页Journal of Chongqing University of Technology：Natural Science

基　　金：重庆市教委科研项目(KJQN201902602)。

摘　　要：研究钛液水解工艺对影响水解产物偏钛酸性能的平均粒径和生产效率的三因素两目标耦合效应,以期确保偏钛酸性能并最大化生产效率。通过中心响应面法建立水解温度、初始钛液浓度、钛液F值对平均粒径与水解率的耦合数学模型,通过方差分析及失真分析,验证了所建立的数学模型的适用性。水解温度对平均粒径的影响较为明显,且平均粒径与水解温度成负相关。而对水解率影响最大的是水解温度,水解温度的提高会使水解率先快速增加,后缓慢增加;其次是初始钛液浓度,钛液浓度的增大使水解率减小。以平均粒径2.00μm、水解率最高为耦合优化目标,获得模型预测值与实验值的误差分别为3%、1.26%,再次验证了该模型的适用性。该研究成果可为工业生产钛液水解获得偏钛酸的工艺预测优化与调控提供理论支撑。This paper aims to find out the coupling law of three factors on two objectives regarding average particle size and hydrolysis rate of the hydrolyzed product,metatitanic,determined by titanium hydrolyzed process,so as to improve the performance and maximize the hydrolysis rate of metatitanic.Response surface methodology is used to establish a coupling mathematical model of hydrolysis temperature,initial concentration of titanium liquid and F value of titanium liquid to average particle size and hydrolysis rate.The correctness of the mathematical model is verified through variance analysis and distortion analysis.Hydrolysis temperature has a significant effect on average particle size,and the latter is negatively correlated to the former.Hydrolysis rate is mainly affected by hydrolysis temperature;with the increase of hydrolysis temperature,hydrolysis rate increases fast at first,and then increases gradually.Initial concentration of titanium solution ranks the second in affecting hydrolysis rate,an increase of which makes hydrolysis rate decrease.With an average particle size of 2.00μm and the highest hydrolysis rate as the optimized coupling objective parameters,the errors between the predicted value figured out through the model and the experimental value of hydrolysis rate are 3%and 1.26%respectively,which further verifies the accuracy of the model.The research results provide a theoretical basis for prediction,control and optimization of the production process of metatitanic,which is manufactured in the industrial hydrolysis process of titanium liquid.

关 键 词：偏钛酸 水解 响应面法 平均粒径 水解率 

分 类 号：TQ426[化学工程] X703[环境科学与工程—环境工程]