Patent ID: 6237545
Filing Date: 2001-05-29
Classification: C10G

Abstract:
A radiant coil for a refinery process furnace, comprising:an inlet pipe section;an outlet pipe section;a plurality of essentially straight horizontal pipe sections arranged in at least two vertical banks, wherein the vertical banks are parallel and horizontally spaced apart a sufficient distance to facilitate placement of evenly spaced rows of burners between the vertical banks;a plurality of bent pipe sweep return bends arranged in vertical banks at either end of the straight pipe banks, each bend connecting a pair of straight pipe sections in adjacent vertical banks thereof, wherein the return bends are sloped between horizontal and vertical and one of the straight pipe sections in the connected pair thereof is elevated with respect to the other; anda tubeside fluid flow path from the inlet pipe section through an alternating series of the straight pipe sections and the return bends to the outlet pipe section.