I’ve run into a problem; please help me figure out how to solve it.
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There are current issues with production: when using alkali-soluble white clay to produce DOTP, no separation occurs in the neutralization stage after the reaction; and even if separation does occur, the amount of aqueous phase is very small, which does not correspond to the amount of alkaline solution added； The oil phase is milky white with some suspended particles; adding activated carbon has no effect. After alcohol removal and filtration, the product’s resistivity does not meet the requirements, and filtration is difficult.
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You hold the highest position I’ve ever seen! ! ! ! ! Great master, please accept my bow. This is a process issue, right? You can consult some technical experts.
It’s achieved through points; I know that. But this is a genius. . . 3W post. . The cows are in a terrible state.
If the oil phase is milky white, it indicates that the reaction is not proceeding well; it is necessary to control the reaction temperature, the amount of catalyst used, and the reaction time
The reaction has reached its endpoint; the acid value has dropped below 0.2, and the yield of the final product is also good. It means no separation upon neutralization, and the oil phase has low transparency.
It is likely caused by oil-soluble impurities; the problem is that it’s not known what these impurities are or how many components they consist of.
The last edit to this post was made by qhyhxjl on 2017-9-16 at 21:45. Should caustic soda or soda ash be used for neutralization? If caustic soda is used, try using soda ash in the laboratory to see the layering effect
Both caustic soda and soda ash have been used in the laboratory, but with no significant effect.