In the next decade, propylene demand should exceed ethylene demand growth. Also, new, large steam cracker projects running light feeds and producing only limited amounts of propylene, should further widen the gap, and the importance of on-purpose propylene production should increase. Traditionally oil refineries have only supplied a third of the propylene market. What more can be squeezed out of oil refineries? How can FCC propylene production be increased using new hardware and catalysts? How can propylene recovery be increased? What purification is required to meet chemical requirements? How does increased FCC propylene production impact the refinery operations in terms of gasoline and diesel quantity and quality? What corrective processing measures have to be taken? Is it economical? These are just a few of the issues covered in the presentation.