Dingtongoxime wastewater stripping process
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Butenoxime is mixed with water, ammonia, and tert-butanol; after adding a base, the mixture is separated in a TBA distillation column. Butenoxime and water from the bottom of the column are cooled in a heat exchanger, followed by phase separation to obtain the aqueous phase. Aqueous phase: 89% water by mass (containing alkalis, pH around 12) and 11% butyl oxime. To recover butyl oxime from the aqueous phase, it is sent to a stripping tower for stripping; however, the butyl oxime content at the bottom of the tower remains high, reaching 5000–6000 mg/kg. I was wondering if this is related to the amount of alkali I add (or factors such as the high pH of the wastewater, and the order in which alkali is added) In what aspects can it be improved? Thank you all for your guidance!
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