Rotary combustor with efficient air distribution
AssigneeWestinghouse Electric Corp.
InventorsSuh Y. Lee, Graham A. Whitlow
Life of this patent
Estimating the term…
Abstract
An improved rotary combustor has side walls with slanted openings. Air used to support combustion passes through the slanted openings and is directed at an acute angle to a vector in the direction of rotation of the combustion barrel. As a result, the air is directed towards the combustion area within the barrel.
Claims13
A generally cylindrical side wall of a combustion barrel in a rotary combustor used for incinerating solid material with combustion gas from a combustion gas supply entering the interior of the combustion barrel through said side wall to support combustion of the material, the combustion barrel having input and exit ends and said side wall being connected to a coolant loop containing heat exchanging equipment and rotating in a direction of rotation about a central axis of rotation, said side wall comprising:
- plural cooling pipes, extending longitudinally in parallel, spaced axial relationship, having connections to the coolant loop at at least one of the input and exit ends;
- and
- plural gas-porous interconnections having openings therein, the openings directing the combustion gas from the combustion gas supply into the interior of the combustion barrel at an acute angle to a vector corresponding to the direction of rotation.
A generally cylindrical side wall of a combustion barrel in a rotary combustor used for incinerating solid material with air from windboxes underlying the combustion barrel entering the interior of the combustion barrel through said side wall to support combustion of the material, the combustion barrel having input and exit ends and said side wall being connected to a coolant loop containing heat exchanging equipment and rotating in a direction of rotation about a central axis of rotation, said side wall comprising:
- plural cooling pipes, extending longitudinally in parallel, spaced axial relationship, having connections to the coolant loop at the exit end of the combustion barrel;
- and
- plural perforated metal webs, joined to adjacent cooling pipes by fillet welds, having openings therein, the openings directing the air from the windboxes into the interior of the combustion barrel at an angle of approximately 60.degree..+-.20.degree. to a vector corresponding to the direction of rotation.
A generally cylindrical side wall of a combustion barrel in a rotary combustor used for incinerating solid material with air from windboxes entering the interior of the combustion barrel through said side wall to support combustion of the material, the combustion barrel having input and output ends and said side wall being connected to a coolant loop containing heat exchanging equipment and rotating in a direction of rotation about a central axis of rotation, said side wall comprising:
- plural cooling pipes, extending longitudinally in parallel, spaced axial relationship, having connections to the coolant loop at the exit end of the combustion barrel, said cooling pipes including integral fins with uneven edges substantially perpendicular to the interior surface of the combustion barrel;
- and
- welds connecting the uneven edges of adjacent cooling pipes at contact points thereof, whereby openings are formed between the adjacent cooling pipes, the openings directing the air from the windboxes into the interior of the combustion barrel at an angle of approximately 60.degree..+-.20.degree. to a vector corresponding to the direction of rotation.
Dependencies are inferred from the claim text.