Heat balance in FCC process and apparatus with downflow reactor

Details Heat balance in FCC process and apparatus with downflow reactor Heat balance in FCC process and apparatus with downflow reactor

1982-07-30

1983-10-25

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Solids contacting and mixing

208159, 422146, 502 41, F27B 1510, F27B 1514, F27B 1516

Patent

active

044117736

ABSTRACT:
In a fluid catalytic cracking (FCC) process and apparatus, the heat balance between the reactor and the regenerator of the FCC operation is partially uncoupled by transferring at least a portion of thermal energy from the reactor vessel downflow riser to the regenerator vessel. The transfer of thermal energy results in a higher regenerating temperature. The thermal energy is recirculated to the upstream section of the downflow reactor riser through a regenerated catalyst having higher temperature. Consequently, the outlet of the reactor vessel is maintained at a substantially constant temperature (e.g., 1000.degree. F.) and the rate of conversion of the oil feed and the octane number of gasoline produced in the process are increased.

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