Patent ID: 8177200
Filing Date: 2012-05-15
Classification: C10G,F28C,F28D

Abstract:
1. A cooling conduit apparatus for cooling gaseous effluent from a hydrocarbon pyrolysis furnace, the cooling conduit apparatus comprising: (i) an inner wall for contacting said effluent, said inner wall defining a bore extending a length of said cooling conduit, said inner wall including a perimeter opening along said bore; (ii) an outer wall external to said inner wall and substantially coaxial to said inner wall; (iii) a substantially annular cavity external to said inner wall and including at least a portion of said outer wall, said annular cavity fluidly and remotely connected to said perimeter opening, said annular cavity externally surrounding a perimeter of said inner wall; (iv) a peripheral channel extending around a perimeter of said inner wall, said peripheral channel providing a channel flow path that fluidly connects said annular cavity with said remotely connected perimeter opening along said perimeter of said inner wall; and (v) a liquid quench fluid introduction port for introducing said liquid quench fluid into said annular cavity; wherein said channel connects with said annular cavity at a portion of said annular cavity having the maximum diameter with respect to a center line axis along the center of said bore, such that at least a portion of said channel includes an outer diameter that is substantially the same as an outer diameter of said annular cavity.