Swirl burner for ammonia combustion
AssigneeRegents of the University of Minnesota
InventorsSeamus Patrick Kane, William F. Northrop, Clifford Goertemiller
Life of this patent
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Abstract
Disclosed herein are methods and systems for burning gaseous ammonia, including receiving a oxidizer gas into a chamber body such that the oxidizer gas generally flows in direction that extends along a longitudinal axis of the chamber body; introducing gaseous ammonia into the chamber body such that swirl is introduced into the gaseous ammonia; mixing the oxidizer gas and the gaseous ammonia to form a combustion mixture; igniting the combustion mixture; and combusting the combustion mixture for a duration such that the gaseous ammonia is converted to combustion products.
Claims20
A method of burning gaseous ammonia, comprising:
- receiving an oxidizer gas into a chamber body such that the oxidizer gas flows in the chamber body;
- introducing gaseous ammonia into the chamber body such that swirl is induced in the gaseous ammonia;
- mixing the oxidizer gas and the gaseous ammonia to form a combustion mixture;
- igniting the combustion mixture;
- and
- combusting the combustion mixture for a duration such that the gaseous ammonia is converted to combustion products.
An ammonia combustion system, comprising
- a plurality of ammonia burners, each ammonia burner comprising:
- a chamber body;
- an intake conduit having a first end for receiving oxidizer gas and a second end coupled to one open end of the chamber body and the second end defining an opening having a cross-sectional area that is larger than a maximum cross-sectional area of the chamber body;
- a nozzle connected to an end of the chamber body opposing the oxidizer gas intake, the nozzle having an inlet opening and an outlet opening, wherein the outlet opening is enlarged or reduced in size relative to the inlet opening;
- a plurality of inlets extending through a sidewall of the chamber body, configured to receive gaseous ammonia at an angle relative to a central axis of the chamber body such that when oxidizer gas passes through the chamber body, swirl is induced in the gaseous ammonia;
- a flame holder surrounding the outlet opening of the nozzle and configured to confine a flame exiting the outlet opening;
- and
- a fuel manifold configured to receive pressurized gaseous ammonia and deliver gaseous ammonia to the plurality of inlets of each of the plurality of burners.
Dependencies are inferred from the claim text.