Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – Diolefin product
Reexamination Certificate
2004-05-19
2009-11-17
Manoharan, Virginia (Department: 1797)
Chemistry of hydrocarbon compounds
Unsaturated compound synthesis
Diolefin product
C203S001000, C203S023000, C203S043000, C203S058000, C203S078000, C203S099000, C203SDIG019, C585S809000, C585S810000, C585S834000, C585S865000
Reexamination Certificate
active
07619126
ABSTRACT:
A process for recovering crude 1,3-butadiene from a C4fraction by extractive distillation using a selective solvent in a dividing wall column (TK) in which a dividing wall (T) is arranged in the longitudinal direction of the column to form a first subregion (A), a second subregion (B) and a lower common column region (C) and which is preceded by an extractive scrubbing column (K), wherein the operation of the dividing wall column (TK) is set by regulation of the energy input into the dividing wall column (TK) via a bottom vaporizer (V) and setting of the number of the theoretical plates in the lower common column region (C) so that a bottom stream (17) consisting of purified solvent is obtained from the dividing wall column (TK), is proposed.
REFERENCES:
patent: 3620930 (1971-11-01), Tschopp et al.
patent: 4162198 (1979-07-01), Stockburger et al.
patent: 6846966 (2005-01-01), Lumgair et al.
patent: 7132038 (2006-11-01), Bohner et al.
patent: 27 24 365 (1978-11-01), None
patent: 101 02 168 (2002-06-01), None
patent: 101 05 660 (2002-08-01), None
BASF - Aktiengesellschaft
Manoharan Virginia
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
Method for obtaining crude 1,3-butadiene from a C 4 fraction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for obtaining crude 1,3-butadiene from a C 4 fraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for obtaining crude 1,3-butadiene from a C 4 fraction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4095171