论文部分内容阅读
在我国以IDA法生产草甘膦的企业中,《釜式空气氧化》作为主导工艺,得到广泛应用,然而草甘膦《过氧化氢氧化法》工艺经笔者改进,使95%的草甘膦固粉收率大生产已达到81%～83%,因而此工艺具有以下特点:(1)釜式空气氧化单批次反应物料填装容量大,釜容从10m3～150m3不等(多数在10m3～20m3)。(2)液料搅拌从一釜一支到一釜多支,物料搅拌方式相同。(3)操作控制易于自动化。(4)双甘膦转化率和草甘膦收率比双氧水氧化法高。但草甘膦原粉的提取、分离是一个冗长、繁琐、高能耗的过程,氧化液中草甘膦质量分数在10%～20%之间,含量偏低,不利于产业化,仍不被大中企业所
Among the companies that produce glyphosate by IDA in our country, “autoclave air oxidation” has been widely used as the leading technology. However, the process of glyoxal “hydrogen peroxide oxidation” has been improved by the author so that 95% of the glyphosate Therefore, the process has the following characteristics: (1) The single-batch reactor of air oxidation of the kettle has a large filling capacity and the kettle capacity ranges from 10m3 to 150m3 (most of them are at 10m3 ~ 20m3). (2) liquid material from a kettle to a kettle of more than one branch, the same material mixing. (3) easy to automate the operation control. (4) PMIDA conversion and glyphosate yield higher than that of hydrogen peroxide. However, the extraction and separation of glyphosate powder is a tedious, cumbersome and energy-intensive process. The content of glyphosate in the oxidized solution is between 10% and 20%, which is not suitable for industrialization and is still not used Large and medium enterprises by