System, method, and apparatus for improved cleaning of industrial furnaces
View Patent ↗A system, method, and apparatus for cleaning deposits in industrial furnaces. An improved fan jet nozzle for air cannon includes either a 4″ or a 6″ inner diameter circular inlet. The nozzle includes a flattening of the inlet on opposed top and bottom side walls converging towards an outlet of the nozzle. The opposed top and bottom sidewalls have convex surface protruding towards the throat of the nozzle. Lateral sidewalls converge towards the outlet of the nozzle. The lateral sidewalls have a slightly concave curvature protruding outwardly from the interior of the nozzle. The outlet may have an arcuate indentation proximal to a centerline of the lateral sidewalls. The improved performance in face area, planar are, and penetration depth permits employment of half the air cannons in an industrial furnace for cleaning while improving cleaning efficiency in the width and depth of cleaning.
1 . A fan jet nozzle for air cannon cleaning system of a kiln refractory, comprising:
an inlet at a proximal end and an outlet at a distal end;
an opposed top and bottom sidewalls converge inwardly along a longitudinal axis of the fan jet nozzle towards the outlet, with an interior of the opposed top and bottom sidewalls having a convex curvature protruding inwardly towards an interior throat of the fan jet nozzle defined along each of the longitudinal axis and a transverse axis of the fan jet nozzle; and
an opposed left and right lateral sidewalls converge towards the outlet, with an interior of the opposed left and right lateral sidewalls having a concave curvature protruding outwardly from the interior throat along the transverse axis of the fan jet nozzle.
2 . The fan jet nozzle of claim 1 , further comprising:
an arcuate indentation defined in the opposed left and right lateral sidewalls, the arcuate indentation disposed across the transverse axis of the fan jet nozzle.
3 . The fan jet nozzle of claim 2 , wherein the arcuate indentation is parabolic with an apex oriented towards the inlet.
4 . The fan jet nozzle of claim 1 , wherein the exterior of the opposed top and bottom sidewalls comprise a flat surface.
5 . The fan jet nozzle of claim 4 , wherein the flat surface of the exterior of the opposed top and bottom sidewalls include a parabolic shape having an apex oriented towards the inlet.
6 . The fan jet nozzle of claim 1 , wherein the inlet has a diameter of at least 4 inches.
7 . The fan jet nozzle of claim 1 , wherein the inlet has a diameter of at least 6 inches.
8 . The fan jet nozzle of claim 1 , further comprising:
an austenitic nickel-based alloy coating.
9 . A fan jet nozzle for an air cannon cleaning system of a kiln refractory, comprising:
an inlet at a proximal end converges inwardly towards and an outlet at a distal end;
an interior sidewall of an opposed top and bottom sidewalls having a convex curvature protruding towards an interior throat of the fan jet nozzle defined along each of a longitudinal axis and a transverse axis thereof; and
an interior sidewall of an opposed left and right lateral sidewalls having a concave curvature protruding outwardly from the interior throat along a transverse axis of the fan jet nozzle.
10 . The fan jet nozzle of claim 9 , the outlet further comprising:
an arcuate indentation proximal to a transverse centerline of the opposed left and right lateral sidewalls.
11 . The fan jet nozzle of claim 9 , the outlet further comprising:
an inner surface of the outlet flares radially outwardly around a periphery of the outlet.
12 . The fan jet nozzle of claim 11 , the outlet further comprising:
a distally protruding curvature across the opposed top and the bottom sidewalls.