Fluid catalytic cracking process for producing low emissions fuels

A fluid catalytic cracking process for producing low emissions fuel products, which process comprises:

• (a) introducing a hydrocarbonaceous feedstock into a reaction zone of a catalytic cracking unit comprised of a reaction zone and a regeneration zone, which feedstock is characterized as having:
• a boiling point from about 230.degree. C. to about 350.degree. C., with end points up to about 620.degree. C.;
• a nitrogen content less than about 50 wppm;
• a hydrogen content in excess of about 13 wt. %;
• a 2+ ring aromatic core content of less than about 7.5 wt. %;
• and an overall aromatic core content of less than about 15 wt. %;
• (b) catalytically cracking said feedstock in said reaction zone at a temperature from about 450.degree. C. to about 600.degree. C., by causing the feedstock to be in contact with a cracking catalyst for a contact time of about 0.5 to 5 seconds, which cracking catalyst is a mixture of an effective amount of zeolite Y and zeolite beta;
• thereby producing lower boiling hydrocarbonaceous products and a partially coked catalyst;
• and
• (c) stripping said spent catalyst in a stripping zone with a stripping medium thereby removing at least a portion of said hydrocarbonaceous material;
• and
• (d) recovering the stripped hydrocarbonaceous material from the stripping zone and passing the stripped spent catalyst to a regeneration zone;
• and
• (e) regenerating said spent catalyst in the regeneration zone by burning off a substantial amount of the coke on said catalyst, and with any added fuel component, to maintain the regenerated catalyst at a temperature which will maintain the catalytic cracking reactor at a temperature from about 450.degree. C. to about 600.degree. C.;
• and
• (f) recycling said regenerated catalyst to the reaction zone.