Process and apparatus for ethylbenzene production and...

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...

Reexamination Certificate

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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).

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