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US 4,085,593 AGranted
Steam power plant with fluidized bed heat source for superheater and method of producing superheated steam
AssigneeStal-Laval Turbin AB
InventorGunnar Larsen
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Abstract
A steam power plant is disclosed in which superheaters for the various turbine stages include heat exchange coils located in the bed portion of high temperature fluidized beds. Improved heat transfer and reduced corrosion of the superheater coils are achieved. A method of producing superheated steam without high temperature corrosion is also disclosed.
Claims10
A steam generating plant for a turbine machine comprising
- (a) a steam boiler;
- (b) a superheating means comprising at least two stages;
- (c) the first of said stages being integral with said steam boiler and being heated from a common heat source therewith;
- (d) the second of said stages being heated separately in a fluidized bed;
- (e) the first of said stages comprising means for heating steam up to a maximum of 540.degree. C;
- and
- (f) the second of said stages comprising means for heating said steam above 540.degree. C.
4 more elements
A method of producing a high degree of superheat in steam for a steam generating plant, comprising the steps of:
- generating steam in a conventional boiler;
- passing said steam from said conventional boiler through a supplemental superheater coil;
- and
- heating said steam to above 540.degree. C as it passes through said supplemental superheat coil by subjecting said coil to heat from a fluidized bed.
1 more element
Dependencies are inferred from the claim text.