Low emissions combustion apparatus and method
AssigneeVast Power Portfolio, LLC
InventorsPaul Andrew Campbell, David Hagen
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Abstract
Clean combustion and equilibration equipment and methods are provided to progressively deliver, combust and equilibrate mixtures of fuel, oxidant and aqueous diluent in a plurality of combustion regions and in one or more equilibration regions to further progress oxidation of products of incomplete combustion, in a manner that sustains combustion while controlling temperatures and residence times sufficiently to reduce CO and NOx emissions to below 25 ppmvd, and preferably to below 3 ppmvd at 15% O2.
Claims25
A method of reducing pollutants within a hot reaction fluid formed by reacting reactant fluid comprising a reactant with oxidant fluid comprising an oxidant, diluted by diluent fluid comprising a diluent, within a reaction system having an upstream primary reaction region and a downstream equilibration system having a first equilibration region;
- the method comprising:
- generating hot reaction fluid within the primary reaction region;
- equilibrating the hot reaction fluid within the equilibration system for a residence time greater than a prescribed residence time;
- and
- reducing the temperature of the hot reaction fluid within the equilibration system to less than a prescribed temperature at the system outlet;
- wherein configuring the fluid composition, temperature, residence sequential flow profile sufficiently:
- to reduce the volume concentration of unreacted reactant components in the hot reaction fluid at the system outlet to less than 25 pmvd at a 15% O2 basis;
- to reduce the volume concentration of residual dissociated reaction product in the hot reaction fluid at the system outlet to less than 25 pmvd at a 15% O2 basis;
- and
- to constrain the volume concentration of byproduct oxidation components formed within the reaction system to less than 25 ppmvd at a 15% O2 basis at the reaction system outlet.
Dependencies are inferred from the claim text.