废硫酸在双甘膦生产工艺中的应用  

Application of Waste Sulphuric Acid in N-Phosphonomethyliminodiacetic Acid Synthesis Process

作　　者：童国羡[1] 吴涛[1] 陈静[1] 张海良[1] 李培国[1] 黄鑫[1] 

机构地区：[1]浙江新安化工集团股份有限公司精细化工研究所,浙江建德311600

出　　处：《农药》2011年第11期808-809,821,共3页Agrochemicals

摘　　要：[目的]甘氨酸(Gly)法合成草甘膦产生大量的废硫酸,为了提高废硫酸的附加值,将其应用到亚氨基二乙酸(IDA)法草甘膦生产工艺中。[方法]采用废硫酸代替盐酸作为催化剂,以亚氨基二乙酸为主要原料与亚磷酸、甲醛发生反应生成双甘膦。[结果]实验结果表明:使用废硫酸对合成双甘膦反应收率及产品品质均无影响。[结论]对该工艺进行了经济效益分析,结果表明具有良好的经济效益。[Aims] The glycine process glyphosate leads to a lot of waste sulphuric acid. In order to improve added value of waste sulphuric acid from the glycine process glyphosate, it was applied in IDA process glyphosate. [Methods] With the waste sulphuric acid as catalyst instead of hydrochloric acid, N-phosphonomethyliminodiacetic acid （PMIDA） was synthesized from the iminodiacetic acid, phosphorous acid and formaldehyde. [Resultsl The results showed that no effect on the yield and quality of PMIDA was observed when waste sulphuric acid was used. [Conclusions] The results showed that the process had good economic benefit based on the evaluation.

关 键 词：废硫酸 双甘膦 草甘膦 

分 类 号：TQ457.2[化学工程—农药化工]