(582am) Kinetics of Resid Fluid Catalytic Cracking Using a Fixed Fluidized Bed Reactor  

Abdulmajed Alkatheeri¹, Gnanapragasam Singaravel*, 1, Mohammad A Rakib¹, Mustafa Karakaya¹,  Anood Taher¹, Syed Bashir Umar¹, Mohamed Al-Musharfy¹, and Stepan Spatenka²

¹TAKREER Research Centre, Abu Dhabi Oil Refining Co. (TAKREER)

P.O. Box 3593, Abu Dhabi – United Arab Emirates

²Process Systems Enterprise Limited

5th Floor East, 26-28 Hammersmith Grove

London W6 7HA - United Kingdom

Abstract

Kinetics of Resid Fluid Catalytic Cracking process was determined utilizing a batch fluidized bed system. A commercial atmospheric residue feed was used in a fluidized bed of commercial catalyst. Parameters varied during the experimental runs included reactor temperature (530°C-560°C), equilibrium metal content on catalyst (3000-13000 ppm) feed injection times (64-150 s), catalyst-to-oil ratio (3-7), and injection of main feed (atmospheric residue), and intermediate liquids (light cycle oil, light and heavy cracked naphtha), in order to capture several scenarios likely to incur during commercial operations. A 2-phase bubbling bed reactor model was utilized to develop the reactor model, which was utilized to extract the kinetics of the cracking reactions. A 10-lump model was utilized for the kinetics, and intermediate lumps were also used as a feed in the experiments in order to improve the accuracy of the kinetics of intermediate steps in the reaction network.

Keywords

Kinetics, RFCC, cracking reactions, 9-lump model