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Title:
METHOD FOR PRODUCING PROPYLENE OXIDE
Document Type and Number:
WIPO Patent Application WO/2018/021271
Kind Code:
A1
Abstract:
This method is for producing propylene oxide and comprises (1) an oxidation step, (2) a distillation step, (3) an epoxidation step, and (4) a separation step, wherein: the distillation step (2) is for distilling a reaction mixture containing cumene hydroperoxide obtained in the oxidation step to separate the reaction mixture into a concentrated liquid containing cumene hydroperoxide and a distillate, and the distilling is continuously performed under a condition that the ratio (D/F) of the flow rate (D) of the distillate to the flow rate (F) of the reaction mixture to be distilled is 0.037-0.13; and the epoxidation step (3) is for causing the concentrated liquid containing cumene hydroperoxide obtained in the distillation step to make contact with propylene in the presence of a catalyst in one or more reactors so that propylene reacts with cumene hydroperoxide contained in the concentrated liquid, to obtain a reaction mixture containing propylene oxide and cumyl alcohol, and the exit temperature of the last reactor among said one or more reactors is adjusted to not less than 115°C but less than 140°C.

Inventors:
KOIKE HIROFUMI (JP)
KAWABATA TOMONORI (JP)
TAKEMOTO TAKUO (SA)
NAKAMURA MOTOSHI (SA)
TAKEMOTO SATORU (SA)
Application Number:
PCT/JP2017/026783
Publication Date:
February 01, 2018
Filing Date:
July 25, 2017
Export Citation:
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Assignee:
SUMITOMO CHEMICAL CO (JP)
International Classes:
C07D303/04; C07D301/06; C07B61/00
Foreign References:
JP2003327576A2003-11-19
JP2003261552A2003-09-19
JP2003261482A2003-09-16
JP2008142584A2008-06-26
JP2007063256A2007-03-15
JP2014009183A2014-01-20
JP2009215228A2009-09-24
JP2009215229A2009-09-24
JP2008266304A2008-11-06
EP2612849A12013-07-10
JP2006008544A2006-01-12
JP2006124332A2006-05-18
JP3731384B22006-01-05
JP3797107B22006-07-12
US20050014960A12005-01-20
US20070260074A12007-11-08
US5783167A1998-07-21
JPH07300312A1995-11-14
CN101348472A2009-01-21
CN101307039A2008-11-19
CN101279960A2008-10-08
CN102311363A2012-01-11
CN102872847A2013-01-16
CN103030611A2013-04-10
Other References:
NATURE, vol. 368, 1994, pages 321
CHEMISTRY OF MATERIAL, vol. 14, 2002, pages 1657
CHEMISTRY LETTERS, 2000, pages 774
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (JP)
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