US 11,649,962 B2 · Burner and combustion device

Abstract

A burner characterized by being equipped with: a fuel supply nozzle to which a mixed flow of a solid fuel and a solid fuel transport gas is supplied; a flow passage that is arranged on the outside of the fuel supply nozzle and that supplies combustion air separated from the mixed flow; and ammonia supply nozzles which are capable of supplying ammonia on the downstream side of the outlet of the fuel supply nozzle toward a reduction region in which oxygen in the transport gas has been consumed due to ignition of the fuel and the progress of combustion, resulting in a low oxygen concentration. Thus, it is possible to provide a burner capable of burning a mixture of a solid fuel and ammonia, and a combustion device equipped with this burner.

Claims18

Dependent claims

A burner comprising:

a fuel supply nozzle to which a mixed flow of a solid fuel and a carrier gas for the solid fuel is supplied;
a flow passage which is disposed on an outside of the fuel supply nozzle to supply a combustion air separately from the mixed flow;
a first guide member which is installed at an outlet part of the flow passage of the combustion air to strengthen a separation of an outer peripheral air from the mixed flow;
an ammonia supply nozzle configured to supply ammonia toward a reduction region in which oxygen in the carrier gas is consumed by ignition and combustion progress of a fuel on a downstream side of an outlet of the fuel supply nozzle to be a low oxygen concentration, and which is provided so that a downstream end thereof is disposed on a downstream side of the flow of the combustion air with respect to the first guide member.

1 more element

Dependencies are inferred from the claim text.

Burner and combustion device

Life of this patent

Burner and combustion device

Life of this patent

Abstract

Claims18