Oxy-combustion coupled firing and recirculation system
AssigneeALSTOM Technology Ltd
InventorsJames R. Kenney, Armand A. Levasseur, Paul J. Chapman, Yen-Ming Chen
Life of this patent
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Abstract
A combustion system is provided for an oxy-combustion furnace. The combustion system includes at least one windbox mountable on the oxy-combustion furnace and having at least one main firing location. At least one primary inlet is positioned in the at least one main firing location for conveying fuel and the first oxidant into the oxy-combustion furnace. At least one secondary inlet is positioned in the at least one main firing location for conveying the second oxidant into the oxy-combustion furnace. The at least one secondary inlet is angularly offset from the at least one primary inlet.
Claims22
A combustion system for an oxy-combustion furnace, the combustion system comprising:
- at least one windbox mountable on the oxy-combustion furnace;
- the at least one windbox comprising at least one main firing location;
- at least one primary inlet positioned in the at least one main firing location for conveying fuel and a first oxidant into the oxy-combustion furnace;
- and
- at least one secondary inlet positioned in the at least one main firing location for conveying a second oxidant into the oxy-combustion furnace, the at least one secondary inlet being angularly offset from the at least one primary inlet.
An oxy-combustion system comprising:
- a tangentially-fired oxy-combustion furnace, comprising at least one wall;
- a fuel source for conveying a fuel to the oxy-combustion furnace;
- an oxidant source for generating a first oxidant stream;
- a primary gas recycle stream extracted from the flue gas, enriched with oxygen extracted from the first oxidant stream, and passed to the oxy-combustion furnace as a first oxygen-enriched stream;
- a secondary gas recycle stream extracted from the flue gas, enriched with oxygen extracted from the first oxidant stream, and passed to the oxy-combustion furnace as a second oxygen-enriched stream;
- and
- a combustion system for the oxy-combustion furnace, the combustion system comprising:
- at least one windbox mountable on the oxy-combustion furnace;
- the at least one windbox comprising at least one main firing location;
- at least one primary inlet positioned in the at least one main firing location for conveying fuel and a first oxidant into the oxy-combustion furnace;
- and
- at least one secondary inlet positioned in the at least one main firing location for conveying a second oxidant into the oxy-combustion furnace, the at least one secondary inlet being angularly offset from the at least one primary inlet.
Dependencies are inferred from the claim text.