Method for operating a fluidized bed boiler
AssigneeImprobed AB
InventorsBengt-Ake Andersson, Pavleta Knutsson, Fredrik Lind, Henrik Thunman
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Abstract
The invention relates to a method for operating a fluidized bed boiler, comprising carrying out the combustion process with a fluidized bed comprising ilmenite particles, wherein the average residence time of the ilmenite particles in the boiler is at least 75 hours. The invention further relates to ilmenite particles obtainable by a corresponding method and the use of said ilmenite particles as oxygen-carrying material.
Claims15
A method for operating a fluidized bed boiler, comprising carrying out the combustion process with a fluidized bed comprising ilmenite particles, wherein the average residence time of the ilmenite particles in the boiler is at least 75 hours.
Ilmenite particles, obtainable by a method comprising:
- a) providing fresh ilmenite particles as bed material to a fluidized bed boiler, preferably a bubbling fluidized bed (BFB) boiler or a circulating fluidized bed (CFB) boiler;
- b) carrying out a combustion process with the fluidized bed boiler;
- wherein the average residence time of the ilmenite particles in the boiler is at least 75 hours;
- c) removing ilmenite particles from the boiler.
Dependencies are inferred from the claim text.