Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By isomerization
Reexamination Certificate
2011-04-26
2011-04-26
Dang, Thuan Dinh (Department: 1771)
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By isomerization
C585S478000
Reexamination Certificate
active
07932426
ABSTRACT:
One exemplary embodiment can be a process for the isomerization of a non-equilibrium alkylaromatic feed mixture. The process can include contacting the non-equilibrium alkylaromatic feed mixture in a C8 isomerization zone. The C8 isomerization zone may include a first isomerization stage and a second isomerization stage. At the first isomerization stage, at least a portion of the non-equilibrium alkylaromatic feed mixture can be contacted at a first isomerization condition in a liquid phase in the substantial absence of hydrogen to obtain an intermediate stream. At the second isomerization stage, at least part of the intermediate stream and at least a part of a stream rich in at least one naphthene can be contacted at a second isomerization condition to obtain a concentration of at least one alkylaromatic isomer that is higher than a concentration of that at least one alkylaromatic isomer in the non-equilibrium alkylaromatic feed mixture.
REFERENCES:
patent: 3562344 (1969-05-01), Hengstebeck
patent: 3553276 (1971-01-01), Berger et al.
patent: 3835198 (1974-09-01), Myers
patent: 4062903 (1977-12-01), Jacobson
patent: 4697039 (1987-09-01), Schmidt
patent: 4783568 (1988-11-01), Schmidt
patent: 5329060 (1994-07-01), Swift
patent: 6198014 (2001-03-01), Alario et al.
patent: 6355853 (2002-03-01), Sharma et al.
patent: 6388159 (2002-05-01), Jan et al.
patent: 6512155 (2003-01-01), Johnson et al.
patent: 6660896 (2003-12-01), Buchanan et al.
patent: 6872866 (2005-03-01), Nemeth et al.
patent: 7125529 (2006-10-01), Ablin
patent: 2005/0131261 (2005-06-01), Nemeth et al.
patent: 2005/0153829 (2005-07-01), Nemeth et al.
patent: 2007/0004947 (2007-01-01), Zhou et al.
patent: 2007/0004948 (2007-01-01), Bauer
Dang Thuan Dinh
Piasecki David J
UOP LLC
LandOfFree
Process for isomerizing a non-equilibrium alkylaromatic feed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for isomerizing a non-equilibrium alkylaromatic feed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for isomerizing a non-equilibrium alkylaromatic feed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2735239