Revamping of the Cat Cracker Reactor Block in the GK–3 Complex

The final stage of revamping of the GK–3 cat cracker reactor block with introduction of new technology is described. The elements of implantation are: combined external riser reactor; high–efficiency feedstock and slurry nozzles; crude treatment cyclone; cracking product cooling unit; two–stage catalyst stripping; regenerated catalyst transport system. As a result, the yield of naphtha is increased by 4.6 wt. %, and steam consumption in the reactor block is reduced by 15%; the unit is converted to a two–year servicing schedule; the feedstock is high–end–point vacuum distillate; the reliability and safety of operation are increased.