Patents Assigned to JOP Inc.
  • Patent number: 4479870
    Abstract: A process for converting normally liquid hydrocarbons with an active fluid catalytic cracking catalyst which comprises:(a) passing an upflowing suspension of hot regenerated active fluid catalytic cracking catalyst in a lift gas comprising hydrocarbons including not more than 10 mole % C.sub.3 and heavier hydrocarbons through a lower portion of a vertically orientated riser conversion zone at a velocity of from about 1.8 to less than 12.2 meters per second, and for a residence time from about 0.5 to about 15 seconds, the ratio of catalyst to hydrocarbon in said lift gas being greater than 80; and(b) introducing the normally liquid hydrocarbons into the upflowing suspension at a locus in the riser conversion zone downstream of the lower portion to form a catalyst-hydrocarbon mixture wherein the temperature and residence time are sufficient to effect the desired conversion.The process is particularly useful for the treatment of a heavy residual feedstock.
    Type: Grant
    Filed: February 29, 1984
    Date of Patent: October 30, 1984
    Assignee: JOP Inc.
    Inventors: Harold U. Hammershaimb, David A. Lomas