Methods for reducing flue gas emissions from fluid catalytic cracking unit regenerators

A method for reducing flue gas particulate emissions from a fluid catalytic cracking (FCC) unit regenerator comprising the steps of:

• fluidizing FCC catalyst, catalyst fines, and biochar particles in a fluidizing gas;
• adhering a portion of the catalyst fines to the biochar particles while in the fluidizing gas;
• and
• regenerating said FCC catalyst to produce the flue gas.

A method for reducing flue gas particulate emissions from a fluid catalytic cracking (FCC) unit regenerator comprising the steps of:

• mixing regenerated FCC catalyst particles, and catalyst fines with a hydrocarbon feedstock;
• contacting the hydrocarbon feedstock with biochar to generate a cracked hydrocarbon product and spent FCC catalyst particles;
• separating the spent FCC catalyst particles from the cracked hydrocarbon product, the biochar, and the catalyst fines;
• and
• regenerating said spent FCC catalyst to produce the flue gas.