Fluid Catalytic Cracking Patents – 2016, Part III: Light Olefins Production
May 22nd, 2017 by William Reid | News | Recent News & Articles |
Conventional techniques available to refiners having FCC units for increasing light olefin production (not employing significant capital expense), have included: (1) catalyst approaches, such as reducing the unit cell size of the Y-zeolite used, or employing octane additives to crack naphtha range material to light olefins; (2) modifying operating conditions to drive conversion levels up and increase olefinicities; and (3) combining hardware modifications and alternative feedstocks. This last option includes processing large amounts/quantities of Light Straight-Run Naphtha (LSN), Light Coke Naphtha (LCN) and Natural Gas Condensate (Liquid – NGL). Some new technologies are also available, however, due to the heat-balance constraints imposed by the processing of large quantities of light feedstocks, changes to the process and to hardware have been necessitated. To date, there have only been a very few of these units built and operated and the others are still in the R&D stage as there are still considerable issues with their development that need to be sorted-out/worked through.
