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US 12,060,326 B2Granted
Laurolactam preparation method and synthesis apparatus
AssigneeHanwha Solutions Corporation
InventorsJiyeon Kim, Youngjin Kim, Jeongseok Park, Jinho Park, Hyun Seo, Seonghoon Hyeong, Kyuho Song
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Abstract
The present invention relates to a laurolactam preparation method and synthesis apparatus, and epoxidation and a rearrangement reaction are performed in the conversion of cyclododecene into cyclododecanone so that the preparation method can synthesize laurolactam having a higher purity with a higher selectivity and in a higher yield than a conventional preparation method.
Claims8
A laurolactam synthesis apparatus, comprising:
- a partial hydrogenation reactor in which cyclododecatriene and hydrogen are introduced to synthesize cyclododecene;
- an epoxidation reactor in which cyclododecene or a mixture containing the cyclododecene and a catalyst are introduced from the partial hydrogenation reactor to synthesize epoxidized cyclododecane;
- a rearrangement reactor in which an epoxidized cyclododecane or a mixture containing the epoxidized cyclododecane and a catalyst are introduced from the epoxidation reactor to synthesize cyclododecanone;
- an oximation reactor in which cyclododecanone or a mixture containing the cyclododecanone and ammonia are introduced from the rearrangement reactor to synthesize cyclododecanone oxime;
- and
- a Beckman rearrangement reactor in which cyclododecanone oxime or a mixture containing the cyclododecanone oxime is introduced from the oximation reactor to synthesize the laurolactam.
3 more elements
Dependencies are inferred from the claim text.