Vapor generating system utilizing angularly arranged bifurcated furnace boundary wall fluid flow tubes
AssigneeFoster Wheeler Energy Corporation
InventorsHarry H. Pratt, David Cranstoun
Life of this patent
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Abstract
A vapor generating system in which a vapor generating section and a superheating section are connected in a series flow relationship with a fluid separating section extending between the vapor generating section and the superheating section. The vapor generating section includes an upright furnace section formed by a plurality of tubes, a portion of which extend at an angle with respect to the horizontal plane for passing fluid through the length of the furnace section to convert a portion of the fluid to vapor or to heat the fluid.
Claims8
A vapor generator comprising an upright furnace section the boundary walls of which are formed by a plurality of tubes and means for passing fluid through said tubes to apply heat to said fluid;
- a first portion of said tubes extending substantially vertically in the lower portions of said boundary walls, a second portion of said tubes extending substantially vertically in the upper portions of said boundary walls and a third portion of tubes extending at an acute angle with respect to a horizontal plane in the intermediate portions of said boundary walls;
- and a plurality of bifurcates extending in said boundary walls, said bifurcates connecting one tube of said third portion of tubes of two tubes of said first portion of tubes and connecting one tube of said third portion of tubes to two tubes of said second portion of tubes;
- said tubes and said bifurcates have fins extending outwardly from diametrically opposed portions thereof, with the fins of adjacent tubes and adjacent bifurcates being welded together to form a gastight structure.
Dependencies are inferred from the claim text.