Ammonoxime methods and systems for carbonyl compounds

Abstract

This invention discloses a method and system for the ammonoximation of carbonyl compounds. The method includes: (1) contacting a reaction stream containing a carbonyl compound, ammonia, and hydrogen peroxide with a catalyst to perform an ammonoximation reaction, obtaining a product stream; (2) mixing the product stream with an organic solvent, and then simultaneously extracting and filtering under disturbed conditions to obtain wastewater and a mixture stream; (3) separating the mixture stream to obtain an oxime-containing organic phase and a catalyst-containing aqueous phase, and returning the catalyst-containing aqueous phase to step (1) to provide at least a portion of the catalyst. Using the carbonyl compound ammonoximation method and system provided by this invention, continuous and efficient separation of wastewater, catalyst, and reaction products can be achieved while obtaining high carbonyl compound conversion and high oxime selectivity, reducing catalyst consumption and improving the stability of the device operation.

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