The FlexiCoking process is organized into seven sections

Flexicoking™ is a continuous fluidized-bed thermal conversion process for heavy residue upgrading, developed by ExxonMobil as a direct evolution of Fluid Coking™. Both technologies are fluid-bed processes derived from the fundamental principles of FCC (Fluid Catalytic Cracking), tightly integrating endothermic reactions (cracking, coking, gasification) with exothermic coke combustion in a continuously circulating solids circuit. Flexicoking extends Fluid Coking by adding a gasifier vessel, enabling partial or complete conversion of the coke product into a low-calorific-value Fuel Gas (Flexigas), minimizing or eliminating petroleum coke from the product slate. The first commercial Flexicoking unit was commissioned at Toa Oil Co., Japan, in 1976 at a feed rate of 20 Mb/d.

Read the detailed technology profile here.

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