Method of operating a premixing burner
AssigneeABB Research Ltd.
InventorsKlaus Dobbeling, Hans P. Knopfel, Thomas Sattelmayer
Life of this patent
Estimating the term…
Abstract
A premixing burner (X) which consists essentially of at least two hollow partial bodies (1, 2), which are positioned one above the other and whose center lines (1b, 2b) extend offset relative to one another in the longitudinal direction of the partial bodies (1, 2), is employed for hot gas generation, for example in a firing plant. Due to this offset, tangential inlet slots (21, 22) respectively occur through which a combustion airflow (15) flows into the internal space (14) of the premixing burner (X). Venturi mixers (32) with fuel nozzles (36), through which a fuel (31) is introduced into the combustion air (15) flowing past at this point, are arranged in the region of these tangential inlet slots (21, 22).
Claims9
A premixing burner, comprising:
- at least two hollow partial bodies positioned adjacent to define a interior space, longitudinal centerlines of each of the bodies being offset so that the bodies define longitudinally extending inlet slots for tangentially directed flow of combustion air into the interior space, the bodies being open at an axial inlet end for an axial flow of combustion air;
- a venturi mixer comprising two elongate bodies, one body mounted on each of the partial bodies at the inlet slots, and a third elongate body disposed in the inlet slot between the elongate bodies mounted on the partial bodies to form two longitudinal flow paths in the inlet slots;
- and
- at least one fuel nozzle positioned in the venturi mixer and directed to inject fuel in the venturi section at a location of maximum combustion air flow velocity.
Dependencies are inferred from the claim text.