Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By ring formation from nonring moiety – e.g. – aromatization,...
Patent
1990-12-03
1993-10-19
McFarlane, Anthony
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By ring formation from nonring moiety, e.g., aromatization,...
585418, 585921, 585924, 585926, C07C 1500, C07C 252
Patent
active
052547655
ABSTRACT:
The invention relates to a process and an apparatus for the production of aromatic hydrocarbons from an aliphatic hydrocarbon charge with 2 to 12 carbon atoms.
The process comprises a stage of contacting a charge of at least one aliphatic hydrocarbon with 2 to 12 carbon atoms and a zeolitic catalyst composition optionally containing at least one metal, in a reaction zone (40) containing reaction tubes (3), said reaction zone being heated by at least partial immersion in an enclosure (1) containing a fluidized particle bed (13), characterized in that said particle bed is at least partly heated by a heat supply (19,23) resulting from the injection of hot gases produced in a zone outside said enclosure and introduced into the fluidized bed under conditions such that the reaction temperature is 400.degree. to 600.degree. C.
Application to the production of benzene, toluene and xylenes.
REFERENCES:
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patent: 4175057 (1979-11-01), Davies et al.
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patent: 4914255 (1990-04-01), Avidan et al.
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"Fluidized-bed Heat Exchanger Avoids Fouling Problems," 95 Chem. Eng. 43 (1988).
Martin Gerard
Renard Pierre
Institut Francais du Pe'trole
McFarlane Anthony
Phan Nhat D.
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