Heat transfer in magnetically stabilized, fluidized beds

A hydrocarbon conversion process which comprises (a) contacting a hydrocarbon feedstock in a conversion zone having a magnetic field applied thereto with a fluidizable particulate solids mixture containing a plurality of separate discrete substantially inert heat carrier particles and magnetizable catalyst particles, said substantially inert heat carrier particles having settling rates higher than the settling rates of said catalyst particles;

• (b) permitting said heat carrier particles to settle in preference to the catalyst particles in a settling zone communicating with said conversion zone;
• (c) circulating said catalyst particles from the conversion zone to a regeneration zone having a magnetic field applied thereto;
• (d) circulating said heat carrier particles from the settling zone to said regeneration zone, said circulation of heat carrier particles being independent of the circulation of catalyst particles;
• (e) contacting said catalyst particles in the presence of said heat carrier particles with oxygen at elevated temperatures to burn coke deposited upon said catalyst particles;
• (f) permitting said heat carrier particles to settle in preference to the catalyst particles in a settling zone communicating with said regeneration zone;
• (g) circulating said catalyst particles from the regeneration zone to a conversion zone having a magnetic field applied thereto;
• and (h) circulating said heat carrier particles from the settling zone to said reaction zone, said circulation of heat carrier particles being independent of the circulation of catalyst particles.