| 多聚甲醛合成脲甲醛缓释肥工艺初探 |
| |
| 引用本文： | 潘贝贝,王晓莉,张文辉,谷守玉.多聚甲醛合成脲甲醛缓释肥工艺初探[J].磷肥与复肥,2014,29(1):23-24. |
| |
| 作者姓名： | 潘贝贝 王晓莉 张文辉 谷守玉 |
| |
| 作者单位： | 1.郑州大学 化工与能源学院，河南 郑州 450001;2.郑州市环境保护宣传教育中心，河南 郑州 450004 |
| |
| 摘 要： | 用多聚甲醛代替甲醛溶液与尿素反应制取脲甲醛缓释肥,适宜的工艺条件为:n(尿素)/n(甲醛)=1.4,反应温度50℃;羟甲基化阶段控制pH=8.0,反应时间40 min;亚甲基化阶段控制pH=3.0,反应时间60 min。在此条件下得到产品的活性指数AI=72.88%,氮的转化率为74.99%,达到了AOAC的标准。
|
| 关 键 词： | 脲甲醛缓释肥 多聚甲醛 制备工艺 |
| 修稿时间： | 2014/1/15 0:00:00 |
Study on sythesis of urea-formaldehyde slow-release fertilizer by paraformaldehyde |
| |
| PAN Bei-bei,WANG Xian-li,ZHANG Wen-hui,GU Shou-yu.Study on sythesis of urea-formaldehyde slow-release fertilizer by paraformaldehyde[J].Phosphate & Compound Fertilizer,2014,29(1):23-24. |
| |
| Authors: | PAN Bei-bei WANG Xian-li ZHANG Wen-hui GU Shou-yu |
| |
| Affiliation: | 1.School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou, Henan 450001, China; 2.Zhengzhou Environmental Protection and Propaganda Centre, Zhengzhou, Henan 450004, China) |
| |
| Abstract: | The urea-formaldehyde slow-release fertilizer is produced with paraformaldehyde （instead of formaldehyde solution） and urea. The optimum conditions for urea-formaldehyde slow-release fertilizer are obtained： n（urea）/n（formaldehyde） of 1.4, reaction temperature of 50 ℃; in hydroxymethylation, pH of 8.0, reaction time of 40 min; in methylenelation, pH of 3.0, reaction time of 60 min. The activity index （AI） of the product is 72.88%, and the conversion of nitrogen is 74.99%, which up to the standard of AOAC. |
| |
| Keywords: | urea-formaldehyde slow-release fertilizer paraformaldehyde preparation process |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《磷肥与复肥》浏览原始摘要信息 |
|
点击此处可从《磷肥与复肥》下载全文 |
|
