Study on Recovery Process of Catalysts in Preparation of Adiponitrile by Butadiene Cyanidation Method
The recycle and recovery of catalyst in the process of preparing adiponitrile from butadiene by cyanidation was studied.The results showed that the selection of extractants,extraction temperature,extraction time,extractant dosage and extraction frequency had different effects on the extraction of catalysts.Experiments were conducted on a small-scale extraction tower,and the optimal results were obtained,with a comprehensive extraction efficiency of over 97%.
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