无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (5): 50-52.doi: 10.11962/1006-4990.2019-0344

• 研究与开发 • 上一篇    下一篇

高聚合率的水溶性聚磷酸铵制备工艺研究

谌勇1,杨三可2,解田2,3,陶绍程2,3,龙庆兰2,3,刘旭2,3()   

  1. 1.贵州大学化学与化工学院,贵州贵阳550025;
    2.瓮福(集团)有限责任公司;
    3.中低品位磷矿及其共伴生资源高效利用国家重点实验室
  • 收稿日期:2019-11-28 出版日期:2020-04-10 发布日期:2020-05-21
  • 作者简介:谌勇(1994— ),男,硕士,研究方向为磷化工;E-mail:1124651548@qq.com。
  • 基金资助:
    贵州省科技重大专项计划项目(黔科合重大专项字[2016]3001)

Research on preparation process of water-soluble ammonium polyphosphate with high polymerization rate

Chen Yong1,Yang Sanke2,Xie Tian2,3,Tao Shaocheng2,3,Long Qinglan2,3,Liu Xu2,3()   

  1. 1.School of Chemistry and Chemical Engineering,Guizhou University,Guiyang 550025,China;
    2.Wengfu(Group) Co.,Ltd.;
    3.National Key Laboratory of Efficient Utilization of Low Grade Phosphate Rock and its Associated Resources
  • Received:2019-11-28 Published:2020-04-10 Online:2020-05-21

摘要:

以湿法磷酸和尿素为原料制备高聚合率的水溶性聚磷酸铵,考察了尿素与磷酸的物质的量比、聚合温度和聚合时间对聚磷酸铵聚合率的影响。通过实验得到最优工艺条件:尿素与磷酸的物质的量比为1.4、聚合温度为180 ℃、聚合时间为1.0 h,所得产品的聚合率为98.20%,五氧化二磷质量分数为63.33%,氮质量分数为13.85%。该产品水溶性良好,通过XRD分析确定聚磷酸铵的晶型为Ⅰ型聚磷酸铵。

关键词: 湿法磷酸, 聚磷酸铵, 聚合率, 尿素

Abstract:

The water-soluble ammonium polyphosphate with high polymerization rate was prepared by using wet process phos-phoric acid and urea as raw materials.The effects of amount-of-substance ratio of urea to phosphoric acid,polymerization tem-perature and polymerization time on the polymerization rate of ammonium polyphosphate were investigated.The optimum pro-cess conditions were as follows:the amount-of-substance ratio of urea to phosphoric acid was 1.4,the polymerization temper-ature was 180 ℃ and the polymerization time was 1.0 h.Under the optimal conditions,the polymerization rate of the obtained product was 98.20%,the mass fraction of phosphorus pentoxide was 63.33% and the mass fraction of nitrogen was 13.85%. the water solubility was good,and the crystal form of ammonium polyphosphate was analyzed by XRD as type Ⅰ ammonium polyphosphate.

Key words: wet-process phosphoric acid, ammonium polyphosphate, polymerization rate, urea

中图分类号: