Title:
METHOD OF INHIBITING DIRT IN PRODUCTION PROCESS OF ε-CAPROLACTAM, AND PRODUCTION METHOD OF ε-CAPROLACTAM
Document Type and Number:
Japanese Patent JP2021130637
Kind Code:
A
Abstract:
To provide a method for inhibiting dirt caused by evaporation of cyclohexanone oxime in gas phase method caprolactam production equipment.SOLUTION: There is provided a method for inhibiting dirt in a production process of ε-caprolactam comprising a step of producing ε-caprolactam from cyclohexanone oxime by gas phase Beckmann rearrangement reaction using a catalyst, where at least one of phenylenediamine and a derivative thereof is present in the gas phase Beckmann rearrangement reaction system.SELECTED DRAWING: None
Inventors:
TERAMORI MASASHI
YOSHINO ASA
KOTANI YASUO
YOSHINO ASA
KOTANI YASUO
Application Number:
JP2020027387A
Publication Date:
September 09, 2021
Filing Date:
February 20, 2020
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
KATAYAMA CHEMICAL WORKS CO
NALCO JAPAN KK
KATAYAMA CHEMICAL WORKS CO
NALCO JAPAN KK
International Classes:
C07D223/10
Attorney, Agent or Firm:
Patent business corporation Ikeuchi and Partners