Abstract:
Atmospheric gas oil boils in the range of 200-4000C. A dilution steam to
hydrocarbon weight ratio of 0.8-1.0 is employed to give the appropriate
hydrocarbon partial pressure at furnace cracking conditions.
Gas oil ,cracking yields a considerable amount of carbonaceous heavy fuel oil
in addition to the usual range of products from cracking naphtha and lighter
feeds. The primary fractionator is therefore much larger to allow for this.