Fossil-fuel fired continuous-flow steam generator
AssigneeSiemens Aktiengesellschaft
InventorEberhard Wittchow
Life of this patent
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Abstract
A continuous-flow steam generator includes a combustion chamber with evaporator tubes for fossil fuel. The combustion chamber is followed on the fuel-gas side, via a horizontal gas flue, by a vertical gas flue. When the continuous-flow steam generator is in operation, temperature differences between the exit region of the combustion chamber and the entry region of the horizontal gas flue are to be particularly low. For this purpose, of a plurality of evaporator tubes capable of being acted upon in parallel by a flow medium, a number of the evaporator tubes are led through the combustion chamber before their entry into the containment wall of said combustion chamber.
Claims33
A continuous-flow steam generator with a combustion chamber for fossil fuel which is followed on the fuel-gas side, via a horizontal gas flue, by a vertical gas flue, the combustion chamber comprising:
- a plurality of burners arranged approximately level with the horizontal gas flue;
- and
- a plurality of vertically arranged evaporator tubes welded to one another in a gastight manner, forming containment walls of the combustion chamber, wherein a plurality of the evaporator tubes are capable of being acted upon in parallel by a flow medium, and wherein, in an exit region of the combustion chamber, a number of the evaporator tubes are capable of being acted upon in parallel by a flow medium being led through the combustion chamber before entry into the respective containment wall of the combustion chamber.
A continuous-flow steam generator, comprising:
- a combustion chamber;
- and
- at least one gas flue, wherein the combustion chamber includes,
- a plurality of substantially vertically oriented evaporator tubes forming a containment wall of the combustion chamber, wherein, in an exit region of the combustion chamber, a plurality of the evaporator tubes are branched off in a substantially horizontal direction into the combustion chamber, prior to forming a containment wall of the combustion chamber.
Dependencies are inferred from the claim text.