Manufacture of lower aromatic compounds

Details Manufacture of lower aromatic compounds Manufacture of lower aromatic compounds

C - Chemistry, Metallurgy

07

C

196/104, 260/678

C07C 5/52 (2006.01) C10G 35/06 (2006.01) C10G 59/02 (2006.01)

Patent

CA 1042022

ABSTRACT OF THE DISCLOSURE The invention relates to the manufacture of gasoline and concurrent production of chemical grade aromatic compounds of eight or less carbon atoms by catalytic reforming of naphtha and using part of the reformate for each purpose. A novel sequence is described resulting in higher quality gasoline of lower "heavy end" content, which comprises fractionating a catalytic reformate to provide a light reformate containing most of the C8 and lighter components of the reformate and a heavy reformate which contains no more than 20 weight percent of xylenes, blending said light reformate with other motor fuel components to provide a finished gasoline, contacting said heavy reformate with a catalyst characterized by an effective amount of type ZSM-5 zeolite, zeolite ZSM-12 or zeolite ZSM-21 at about 550 to 1000°F., about 100 to about 2000 pounds per square inch, admixed with 0.5 to 10 mols of hydrogen per mol of hydrocarbon and at a weight hourly space velocity between about 0.1 and about 200 unit weights of hydrocarbon per unit weight of said zeolite in the catalyst per hour, and recovering at least one aromatic compound of eight or less carbon atoms from the product of contacting said heavy reformate with said catalyst.

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