Process for the dissociation of MTBE

Details Process for the dissociation of MTBE Process for the dissociation of MTBE

2011-04-05

2011-04-05

Singh, Prem C (Department: 1771)

Chemistry of hydrocarbon compounds

Saturated compound synthesis

Synthesis catalyst, solvent, or component thereof used as...

C585S001000, C585S312000, C585S638000, C585S639000, C585S640000, C585S809000

Reexamination Certificate

active

07919662

ABSTRACT:
Isobutene is prepared by dissociation of MTBE in the gas phase, by a) fractional distillation of an MTBE-containing stream comprising feed MTBE (I) and a recycle stream (VIII) to give an MTBE-containing overhead stream (II) and a bottom stream (III) having a boiling point higher than MTBE, b) catalytic dissociation of the overhead stream (II) obtained in step a) to give a dissociation product (IV), c) separation by distillation of the dissociation product (IV) obtained in step b) into an overhead stream (V) comprising more than 90% by mass of isobutene and a bottom stream (VI) comprising diisobutene, MTBE and more than 50% of the methanol present in the dissociation product (IV), d) fractional distillation of the bottom stream obtained in step c) under conditions under which the methanol is obtained as bottom product (VII) and more than 99% of the MTBE is obtained in the overhead product (VIII), and e) recirculation of the overhead product (VIII) to step a).

REFERENCES:
patent: 4447668 (1984-05-01), Smith et al.
patent: 4570026 (1986-02-01), Keyworth et al.
patent: 7439413 (2008-10-01), Malzkorn et al.
patent: 2006/0135833 (2006-06-01), Malzkorn et al.
patent: 2006/0264681 (2006-11-01), Obenaus et al.
patent: 102 38 370 (2004-03-01), None
patent: 2 096 604 (1982-10-01), None
patent: WO 2004/007412 (2004-01-01), None
patent: WO 2004/018393 (2004-03-01), None
Roberto Trotta, et al. “Case history: synthesis and decomposition of MTBE” Catalysis Today 34, Charpter 14, Elsevier, XP-002465780, 1997, pp. 447-455.
U.S. Appl. No. 11/614,275, filed Dec. 21, 2006, Praefke, et al.
U.S. Appl. No. 11/839,604, filed Aug. 16, 2007, Winterberg, et al.
U.S. Appl. No. 11/758,285, filed Jun. 5, 2007, Winterberg, et al.
U.S. Appl. No. 11/836,905, filed Aug. 10, 2007, Zanthoff, et al.
U.S. Appl. No. 11/839,597, filed Aug. 16, 2007, Fernandez, et al.

Affiliated with

Also associated with

Rating

Process for the dissociation of MTBE 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 the dissociation of MTBE, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the dissociation of MTBE will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2650212