[Aims] A method of recycling glycine during the production of glyphosate was explor ated to improve the utilization rate of glycine. [Methods] The method was to adjust the solution pH value by acidifying agent to make the produced by-product intermediate enamine compound decompose and reduce glycine and then precipitate, the precipitation can be reused by filtration for next glyphosate synthesis. [Results] The strong sulfuric acid as acidification agent can achieve good effect, which can recover glycine taking part in the side effects around 55%. [Conclusions] Glycine effective utilization rate during the production of glyphosate reached 87%.
NETL
NSTL
万方数据
维普
