A process and an apparatus for removing particulate material from a flash zone
gas oil stream produced in a delayed coking unit. The process and apparatus of
the invention employ cyclonic separation to remove particulate material from the
flash zone gas oil stream. The stream can then be further processed, for example
by passing the stream to a fixed bed catalytic hydroprocessing unit and then to
a fluidized bed catalytic cracking unit, or to other processing units, thereby
enhancing the value of the flash zone gas oil stream.