Title:
PROCESS AND SYSTEM FOR THE PRODUCTION OF ISOPRENE
Document Type and Number:
WIPO Patent Application WO/2011/016842
Kind Code:
A3
Abstract:
Disclosed herein is a process for producing isoprene that includes reacting a mixed C4 metathesis feed stream comprising isobutylene and at least one of 1-butene and 2-pentene in a first metathesis reactor in the presence of a first metathesis catalyst under conditions sufficient to produce an intermediate product stream comprising at least 30 wt. % 2-methyl-2-pentene based upon the olefin content of fresh feed in the mixed C4 feed stream, and at least one of ethylene and propylene, separating the 2-methyl-2-pentene, subjecting the separated 2-methyl-2-pentene to pyrolysis to produce a reaction product stream comprising isoprene, and separating the isoprene into an isoprene product stream using fractionation. A system used in producing isoprene is also disclosed.
Inventors:
GARTSIDE ROBERT J (US)
KLEINDIENST SHANE R (US)
KLEINDIENST SHANE R (US)
Application Number:
PCT/US2010/002115
Publication Date:
June 16, 2011
Filing Date:
July 29, 2010
Export Citation:
Assignee:
LUMMUS TECHNOLOGY INC (US)
International Classes:
C07C4/04; C07C11/10
Foreign References:
| US3382289A | 1968-05-07 | |||
| GB832475A | 1960-04-13 | |||
| US6538168B1 | 2003-03-25 | |||
| GB934450A | 1963-08-21 | |||
| US3327000A | 1967-06-20 | |||
| CH478072A | 1969-09-15 | |||
| US6875901B2 | 2005-04-05 |
Attorney, Agent or Firm:
COVELLO, Diane, F. et al. (Yale & Ristas LLP,750 Main Street, Suite 140, Hartford CT, US)
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