Patent ID: 8318102
Filing Date: 2012-11-27
Classification: B01J,C10G,F28D,F28F

Abstract:
1. A cooling system for removing heat from a Fischer-Tropsch (F-T) slurry reactor, the cooling system comprising: a coolant; only one downcomer having an upper portion, a lower portion, and a diameter; the downcomer capable of being disposed within the F-T reactor to deliver the coolant downward through the F-T reactor at a predetermined velocity, the downcomer extending a length within the F-T reactor wherein the coolant is introduced into the upper portion of the downcomer in a substantially liquid phase; the diameter of the downcomer and the pressure of the coolant cooperate to increase the coolant velocity thereby generating backpressure in the downcomer to maintain the coolant in the substantially liquid phase along the length of the downcomer; wherein the diameter of the downcomer is in a range of 2 inches I.D. to 8 inches I.D.; a plenum connected to the lower portion of the downcomer; the plenum in fluid communication with the downcomer wherein the coolant remains in the substantially liquid phase; and a plurality of riser each having a length and extending upward from the plenum; the plurality of risers in fluid communication with the plenum wherein a portion of the coolant vaporizes to provide a boiling heat transfer surface on the plurality of riser.