Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1982-04-30
1983-12-06
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208113, 208164, 208251R, C10G 1118
Patent
active
044192231
ABSTRACT:
A method is disclosed for cracking a carbo-metallic oil feed containing high amounts of coke forming carbonaceous materials as characterized by a carbon residue on pyrolysis of at least about 1 and by a level of heavy metal(s) of at least about 5.5 ppm by weight of Nickel Equivalents. The method includes contacting the feed with cracking catalyst bearing an accumulation of at least about 3,000 ppm by weight of Nickel Equivalents of heavy metal(s) and with additional material including water. The resultant stream flows through a progressive flow type reactor for a vapor residence time of about 0.5 to about 6 seconds at conditions sufficient for causing a conversion per pass of about 60% to about 90%. The additional material is added in a weight ratio relative to feed of up to about 0.4 and includes water in a weight ratio relative to feed of at least about 0.04. The water may be introduced as steam and/or liquid water. After such contact, catalyst is separated from product vapors and thereafter regenerated with oxygen-containing gas under conditions sufficient to reduce carbon on catalyst to about 0.25 percent by weight or less while maintaining a CO:CO.sub.2 molar ratio of at least about 0.25 in combustion gases in heat exchange contact with the catalyst.
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Busch Lloyd E.
Myers George D.
Ashland Oil Inc.
Gantz Delbert E.
Schmitkons G. E.
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