High depth fluidized catalytic cracking system and process for the production of olefins from petroleum feeds

摘要

Systems and processes are disclosed for the production of petrochemical products such as ethylene, propene and other olefins from crude oil in high severity fluid catalytic cracking (HSFCC) units. The processes include separating crude oil into a light fraction and a heavy fraction, cracking the light and heavy fractions in cracking reaction zones, and separating from the first and first recovery zones for the first catalyst (heavy fraction) And regenerating the cracking catalysts in a two-zone regenerator having a second regeneration zone for the second catalyst (light fraction). The flue gas from the first catalyst regeneration zone is transferred to the second regeneration zone to provide additional heat to raise the temperature of the second catalyst on the side of the light fraction. The disclosed systems and processes allow different catalysts and operating conditions to be used for the light and heavy fractions of a crude oil feed.