Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Reexamination Certificate
2006-10-31
2006-10-31
Bhat, N. (Department: 1764)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
C422S217000, C422S236000, C585S323000, C585S470000, C585S475000
Reexamination Certificate
active
07128883
ABSTRACT:
The use of two transalkylation catalysts to react aromatic compounds of carbon number nine (and heavier carbon numbers) with benzene to form carbon number eight aromatics is disclosed. The two catalyst system preserves ethyl-group species on the heavier aromatics that would otherwise de-ethylate over most gas-phase transalkylation catalysts to form undesired ethane gas with benzene or toluene. Thus, by using a transalkylation step to save ethylbenzene, a greater yield of para-xylene or other carbon number eight aromatics may be achieved within an integrated complex. An apparatus and process for the two transalkylation catalyst system is disclosed with a liquid-phase unit and a gas-phase unit.
REFERENCES:
patent: 3130007 (1964-04-01), Breck
patent: 3216789 (1965-11-01), Breck et al.
patent: 3308069 (1967-03-01), Wadlinger et al.
patent: 3849340 (1974-11-01), Pollitzer
patent: 4083866 (1978-04-01), Petitpierre
patent: 4169111 (1979-09-01), Wight
patent: 4459426 (1984-07-01), Inwood et al.
patent: 4774377 (1988-09-01), Barger et al.
patent: 5004855 (1991-04-01), Tada et al.
patent: 5030786 (1991-07-01), Shamshoum et al.
patent: 5177285 (1993-01-01), Van Opdorp et al.
patent: 5763720 (1998-06-01), Buchanan et al.
patent: 5847256 (1998-12-01), Ichioka et al.
patent: 5942651 (1999-08-01), Beech, Jr. et al.
patent: 5952536 (1999-09-01), Nacamuli et al.
patent: 6268542 (2001-07-01), Merrill et al.
patent: 6342649 (2002-01-01), Winter et al.
patent: 6376729 (2002-04-01), Merrill et al.
patent: 6855854 (2005-02-01), James, Jr.
Handbook of Petroleum Refining Processes,(Robert A. Meyers, 2d ed., 1997), pp. 2.3 to 2.11 by John J. Jeanneret.
Donald W. Breck,Zeolite Molecular Sieves,1974, Robert E. Krieger Publishing Company, (pp. 122-124 and 162-163).
Bhat N.
Maas Maryann
Tolomei John G.
UOP LLC
LandOfFree
Process and apparatus for ethylbenzene production and... 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 and apparatus for ethylbenzene production and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for ethylbenzene production and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3621685