Purification of caprolactam in magnetically stabilized bed reactor

Purification of caprolactam in magnetically stabilized bed reactor

A magnetically stabilized bed (MSB) reactor with amorphous nickel alloy catalyst (SRNA-4) was used for purification of caprolactam. The effects of various operating conditions on the hydrogenation were investigated, and the lifetime of SRNA-4 catalyst was also examined. A mathematical model of MSB r...

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Bibliographic Details
Published in:Catalysis today Vol. 79; pp. 21 - 27
Main Authors: Meng, Xiangkun, Mu, Xuhong, Zong, Baoning, Min, Enze, Zhu, Zehua, Fu, Songbao, Luo, Yaobang
Format: Journal Article Conference Proceeding
Language:English
Published: Amsterdam Elsevier B.V 30-04-2003
Elsevier Science
Subjects:
Amorphous nickel alloy
Applied sciences
Caprolactam
Catalysis
Catalytic reactions
Chemical engineering
Chemistry
Exact sciences and technology
General and physical chemistry
Hydrogenation
Magnetically stabilized bed
Reactors
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Caprolactam
Amorphous nickel alloy
Hydrogenation
Magnetically stabilized bed
Heterogeneous catalysis
Purification
Transition metal Alloys
Lactam
Catalytic reactor
Amorphous alloy
Nickel alloy
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Summary:A magnetically stabilized bed (MSB) reactor with amorphous nickel alloy catalyst (SRNA-4) was used for purification of caprolactam. The effects of various operating conditions on the hydrogenation were investigated, and the lifetime of SRNA-4 catalyst was also examined. A mathematical model of MSB reactor for hydrogenation of caprolactam solution was established. The experiment results show that the PM number (permanganate number) of caprolactam aqueous solution can be increased from 50 s to more than 2000 s through MSB hydrogenation process, and the lifetime of SRNA-4 catalyst is more than 3200 h. The catalyst consumption is reduced by 60%, as compared with that of the slurry reactor.
ISSN:0920-5861
1873-4308
DOI:10.1016/S0920-5861(03)00038-5