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US 4,061,112 AGranted
Steam generating plant
AssigneeFoster Wheeler Energy Corporation
InventorThomas Gibson
Life of this patent
Estimating the term…
Abstract
This invention relates to waste heat steam boiler plant and in particular to a transition chamber for joining a waste heat gas duct to a waste heat boiler in such plant. The cross-section of the boiler inlet differs from that of the waste gas duct and so this transition chamber has a cross-section which progressively joins one to the other. Instead of using refractory clad steel the chamber is made according to the invention from air-tight water cooled tube panels formed of tubes joined by fins.
Claims3
In a waste heat steam boiler plant:
- a. A waste heat boiler comprising:
- i. a steam drum adjacent to the top of said boiler;
- ii. a steam and water drum adjacent to the bottom of said boiler;
- iii. downcomer means connecting said steam drum to said steam and water drum;
- and
- iv. riser means connecting said steam and water drum to said steam drum;
- b. a waste gas duct;
- and
- c. a tapered transition chamber adapted to be connected between said duct and said boiler, said transition chamber having a roof sloping upwardly from said duct, a floor sloping downwardly from said duct, and angularly disposed sidewalls whereby the cross-sectional area of said transition chamber increases between said duct and said boiler, said transition chamber defined by air-tight side walls, air-tight floor and air-tight roof, said walls, floor and roof including water-cooled tubes, means rigidly uniting said tubes, said tubes being connected at their upper ends to said steam drum and at their lower ends to said steam and water drum so that said tubes extend upwardly over their entire length from said steam and water drum to said steam drum.
6 more elements
Dependencies are inferred from the claim text.