Patent ID: 8066949

Claim:
In a fluid coking unit comprising (i) a reactor section, (ii) a superimposed scrubber section, (iii) at least one separator cyclone having its gas outlet communicating with the scrubber section and directing gas flow from the cyclone outlet in a rotational direction in the scrubber section about a central axis of the scrubber section, (iv) a shed section in the scrubber section above the gas outlet of the cyclone, and (v) a de-entrainment section above the shed section, the improvement comprising upstanding, generally vertical, perforated baffle plates aligned at least partly transverse to the rotational flow of gas in the shed section of the scrubber section above the cyclone gas outlets and located in the rotational gas flow path in the radially outer portion of the scrubber section in the region of the scrubber walls to redirect the vapor flow towards the central, axial portion of the scrubber section and with the central, axial portion free of such baffles, to break the vapor flow into a series of smaller jets to improve the uniformity of the gas flow profile in the scrubber by reducing the velocity of the gases from the cyclone gas outlet in the radially outer portion of the scrubber section.