Water cooled CO boiler floor with screen gas distribution inlet
AssigneeThe Babcock & Wilcox Company
InventorsEric L Wells, John A Kulig, Daniel E Knopsnider, Jr., Richard A Wessel
Life of this patent
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Abstract
A carbon monoxide (CO) boiler or steam generator having a water cooled CO boiler floor with screen gas distribution inlet to enhance distribution of CO gas in a CO boiler. Either the front or rear wall tubes of the steam generator form an integral screen and the tubes continue, forming a membraned, gas tight enclosure. The floor has a “knee” to redirect the incoming waste CO gas up into the integral screen. The screen may be provided with tube erosion shields to prevent erosion of the screen tubes and to control the distribution of waste gas across the plan area of the furnace.
Claims10
A carbon monoxide (CO) boiler, comprising:
- a furnace enclosure having front, rear and side walls, a water cooled CO boiler floor with a screen gas distribution inlet, and a knee located below the floor;
- a CO gas conduit for conveying CO gas into the furnace enclosure;
- and
- a furnace arch located at a transition region between a lower furnace portion of the boiler and an upper furnace portion of the boiler, the furnace arch serving to redirect gases from the lower furnace portion across heating surfaces located in the upper furnace portion;
- wherein the front wall, the water cooled CO boiler floor with the screen gas distribution inlet, and the knee are formed from a set of tubes, each tube having a front wall portion, a floor portion, and a knee portion;
- wherein the floor portions of the tubes are separated from one another and are without membranes therebetween to form an integral screen having an arrangement of gaps or apertures between adjacent tubes for conveying CO gas therethrough into the furnace enclosure;
- wherein membranes are present between the knee portions of the tubes for redirecting incoming CO gas upwardly through the integral screen into the furnace enclosure;
- wherein membranes are present between the front wall portions of the tubes;
- and
- wherein the CO gas conduit is located so incoming CO gas impacts the knee.
Dependencies are inferred from the claim text.