| 三聚磷酸钠制备工艺研究 |
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| 引用本文： | 崔益顺.三聚磷酸钠制备工艺研究[J].四川理工学院学报(自然科学版),2009,22(1). |
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| 作者姓名： | 崔益顺 |
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| 作者单位： | 四川理工学院材料与化学工程学院,四川,自贡,643000 |
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| 摘 要： | 采用正交实验法,以纯碱与磷酸为原料制备三聚磷酸钠(STPP)。考察了原料配比、反应时间、反应温度、催化剂、磷酸浓度以及中和液pH值对产品质量的影响。得出优化工艺条件为:添加催化剂尿素;中和温度为95℃;聚合温度为420℃;中和时间为50m in;聚合时间为40m in;中和液pH值为7;磷酸与纯碱物质的量比为6.0∶5.0;磷酸浓度为75%。
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| 关 键 词： | 三聚磷酸钠(STPP) 工艺条件 正交实验 |
Study on the Process of Sodium Tripolyphosphate Preparation |
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| CUI Yi-shun.Study on the Process of Sodium Tripolyphosphate Preparation[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2009,22(1). |
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| Authors: | CUI Yi-shun |
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| Institution: | School of Material and Chemical Engineering;Sichuan University of Science & Engineering;Zigong 643000;China |
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| Abstract: | The method of orthogonal experiment is adopted in this paper and the sodium tripolyphosphate(STPP) is composed by sodium carbonate and phosphoric acid.The influence of mol ratio of material,reaction time,reaction temperature,catalyst,density of phosphoric acid and pH to quality of the product is studied.So the best conditions of process is gained: adding the catalyst of urea;neutral temperature is 95℃;polymeric temperature is 420℃;neutral time is 50 min;polymeric time is 40min;pH is 7;n(phosphoric acid)∶n(sodium carbonate) is 6.0∶5.0;the density of phosphoric acid is 75%. |
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| Keywords: | sodium tripolyphosphate(STPP) condition of process orthogonal experiment |
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