利用碳酸氢铵生产工艺制备草酰胺的可行性探讨  

Feasibility Study on Preparation of Oxamide Using Ammonium Bicarbonate Production Process

作　　者：刘长有 卓泽凡 田亚梅 LIU Changyou;ZHUO Zefan;TIAN Yamei(Carbon Potash Fertilizer Research Institute of Tongze Group,Xi'an,Shaanxi 710075,China)

机构地区：[1]同泽集团碳钾肥研究所,陕西西安710075

出　　处：《肥料与健康》2021年第3期37-40,44,共5页Fertilizer & Health

摘　　要：草酰胺是一种优质的缓释肥料,但因其生产成本较高,难以推广应用。借鉴传统小氮肥企业采用的合成氨-碳酸氢铵联合生产工艺,提出一种制备草酰胺的思路,即一氧化碳和氨水在一定压力和温度下,以浓硫酸为催化剂反应制取甲酸铵,再经双聚、脱氢、脱水等过程得到草酰胺。采用此工艺生产草酰胺,有望大幅降低生产成本。Oxamide is an excellent slow-release fertilizer yet due to its high production cost, it has not been popularized and widely applied. The preparation of oxamide draws lessons from the synthetic ammonia-ammonium bicarbonate combined production process of traditional small nitrogen fertilizer manufacturers. First, carbon monoxide and ammonia are reacted to produce ammonium formate under certain pressure and temperature with concentrated sulfuric acid as catalyst. Then, by dimerization, dehydrogenation and dehydration, the oxamide product is obtained. Using this process, the production cost of oxamide may greatly reduced.

关 键 词：草酰胺 碳酸氢铵 缓释肥料 生产工艺 可行性研究 

分 类 号：TQ449.1[化学工程—化学肥料工业]