Title:
PRODUCTION METHOD FOR ε-CAPROLACTAM
Document Type and Number:
WIPO Patent Application WO/2013/058121
Kind Code:
A1
Abstract:
A production method for ε-caprolactam, including: a step in which a gas-phase reaction is performed whereby a cyclohexanone oxime is caused to come in contact with a solid catalyst, and the cyclohexanone oxime is converted to ε-caprolactam, in the coexistence of a lower alcohol; and a step in which the volumes of water, ammonia, and amine coexisting in the gas-phase reaction system are adjusted to the values in formulas (1-3). The lower alcohol in the ε-caprolactam production method includes a recovered lower alcohol that is recovered from a reaction mixture obtained by the gas-phase reaction. (1) 0≦{[ammonia (number of moles)/lower alcohol (number of moles)]×100}<14; (2) 0<{[water (number of moles)/lower alcohol (number of moles)]×100}<11; (3) 0≦{[amine (number of moles)/lower alcohol (number of moles)]×100}<7.5
Inventors:
SUGITA KEISUKE (JP)
YOKOTA TETSUYA (JP)
TAKEDA NAOKI (JP)
YOKOTA TETSUYA (JP)
TAKEDA NAOKI (JP)
Application Number:
PCT/JP2012/075812
Publication Date:
April 25, 2013
Filing Date:
October 04, 2012
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C07D201/04; C07D223/10; C07B61/00
Foreign References:
| JPH02275850A | 1990-11-09 | |||
| JPH05201965A | 1993-08-10 | |||
| JPH05201966A | 1993-08-10 | |||
| JPH06107627A | 1994-04-19 | |||
| JP2002284752A | 2002-10-03 | |||
| JP2002105039A | 2002-04-10 |
Other References:
MARUZEN CO., LTD.: "5 Process System no Kosei", KAGAKU PROCESS KOGAKU, 1969, pages 84 - 119
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
Sumio Tanai (JP)
Sumio Tanai (JP)
Download PDF:
Claims:
Previous Patent: LOGISTICS DESIGN DEVICE, METHOD, AND PROGRAM
Next Patent: MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD
Next Patent: MOTOR CONTROL DEVICE AND MOTOR CONTROL METHOD