Issues of equipment corrosion in glyphosate production
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This post was last edited by gaodi913 on 2016-2-22 at 13:13. Our company produces glyphosate using the glycine method. During the production process, the enamel-lined reaction vessels suffer severe damage; in many cases the enamel cracks, requiring frequent repairs due to intense corrosion. The contents of these vessels consist of 30% salt acid along with synthetic substances such as methanol, dimethyl phosphite, triethylamine, polymethanol, and glycine. Glyphosate is produced by heating this mixture to 115°C. We are considering using a titanium lining for the vessels to address the corrosion issue, but we have not yet implemented this solution. We are not sure if it will work, so we would appreciate any advice from experts and professionals in this field； Please advise if there are any better methods for corrosion prevention.
Are there any instances upstairs? Which manufacturer is using the modification you mentioned now?
Spraying PTFE inside the pot is a great choice! ! !
In which areas do the cracks in the products caused by the manufacturer occur? Is it due to problems with the product quality itself? The glass-lined material itself is suitable.
I mean it’s a problem with the equipment; the quality is poor! Defects caused.
Does tetrafluoride creep at high temperatures? Theoretically, Hastelloy and Monel alloys are more reliable, but expert guidance with actual cases is needed :)
Conduct material tests directly; information obtained through inquiries is ultimately unreliable.
The area where the porcelain cracks is mainly at the junction of the pot lid and the pot; in some cases, the cracking starts directly on the pot wall and leads to a hole in the pot. There are also pots in which cracking occurs only in one specific area, and the same issue arises even after replacing the pot with a new one； Right now, the main focus is on finding ways to modify the tank in order to achieve a more effective seal and reduce leaks!
Do you have any cases for reference? We can cooperate!
It’s easy to conduct experiments with titanium, but it’s not so easy when using tetrafluoride；