Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Injection of LPG into TCC unit

Patent ·
OSTI ID:6737573
A process is described for catalytically cracking hydrocarbon feed in a bed of catalyst effective to crack the hydrocarbon feed, comprising contacting the feed under catalytic cracking conditions, with the catalyst in a first portion of the bed, to produce cracked product. Another portion of that bed of catalyst is sealed by introducing into another portion of that bed a seal selected from the group consisting of ethane, propane, butane, isobutane, ethylene, propylene, butylene, isobutylene and mixtures thereof whereby feed and cracked product are prevented from surging into another portion; whereby contact of the seal with catalyst in another portion of the bed results in conversion of the seal to the higher molecular weight adducts thereof, the condition in another portion of the bed being effective to provide the conversion.
Assignee:
Mobil Oil Corp., New York, NY
Patent Number(s):
US 4640763
OSTI ID:
6737573
Country of Publication:
United States
Language:
English