Method for preparing glyphosate by PMIDA catalytic oxidation

Abstract

The invention discloses a method for preparing glyphosate by PMIDA catalytic oxidation, comprising the following steps: 100-110 parts of PMIDA, 5-12 parts of activated carbon and 0.25-1.80 parts of pro-oxidants are added in 300 parts of water by mass part, the mixture is stirred, and then oxygen-containing gas with 70-100 percent of oxygen mass fraction is vented to the mixture to carry out catalytic oxidation reaction, the reaction temperature is 50-100 DEG C, the reaction pressure is 0.5-2.0MPa and the reaction time is 1-2h; after the reaction is finished, the solution is cooled and filtered to obtain filtrated mother liquid and a filter cake 1, the filtrated mother liquid is utilized in a circulating way, the filter cake 1 is hot-melted after water is added and then is filtered to obtain hot filtrate and a filter cake 2, the hot filtrate is cooled and crystallized to obtain solid glyphosate, and the filter cake 2 is recycled and used repeatedly. The method has stable product quality, can greatly improve utilization rate of oxygen and speed up the reaction rate; the production cost is low, formaldehyde can be effectively degraded, thereby meeting the industrial production requirements.

Description

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AI Technical Summary

Benefits of technology

This patented method improves upon existing methods for producing chemicals with improved efficiency while reducing costs associated therewith. By adding an antioxidizing agent during this step, it becomes possible to achieve better results compared to previous techniques. Additionally, since these processes involve reacting at very fast rates, they have potential benefits such as increased yields or lowered emissions from harmful substances produced when used over multiple generations of products. Overall, this technology provides technical means for creation of more efficient and effective chemistry solutions

Problems solved by technology

This patents describes various technical problem addressed in this patented text relating to producing industrially important compounds called glyphonitrochlorodimilte ammonium sulfone hydrate (GCSOH), commonly known as glyphocide. These substances were previously unknown because they had been found only once more frequently than other types of pesticids that could potentially harm crops when applied without proper monitoring due to safety concerns associated therewith such pesticides being less effective compared to others like imazapyr grass mboxer. Additionally, current processes involve expensive equipment and complex procedures involving multiple steps.

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