摘要
研究以工业级磷酸、尿素为原料合成磷酸脲。通过正交实验确定了合成磷酸脲的最佳工艺条件:反应温度50℃,反应时间40min,磷酸与尿素的摩尔比为1∶1.05,磷酸的浓度为50%,收率为89.4%,母液的循环利用5次以后收率可达90.4%。
The synthesis process of urea phosphates from industrial phosphoric acid and urea was studied.Optimal conditions were obtained by means of orthogonal experiments： the reaction time was 40 min,reaction temperature was 50℃,the molar ratio of phosphoric acid to urea was 1：1.05,and the content of phosphoric acid was 50% with the yield of 91.2%.When the mother liquor was circulated for 5 times,the yield was up to 90.4%.
出处
《化工技术与开发》
CAS
2010年第8期27-28,共2页
Technology & Development of Chemical Industry
关键词
磷酸脲
磷酸
尿素
正交实验
urea phosphates
phosphoric acid
urea
orthogonal experiment
