Apparatus for the pulverization and burning of solid fuels
AssigneeTAS, Ltd.
InventorsWilliam H. Sayler, Justin C. White
Life of this patent
Estimating the term…
Abstract
Apparatus and method for the pulverization and burning of solid fuels, such as coal, that provides for introducing relatively coarsely divided solid fuel into the lower part of an upstanding, closed housing for impact crushing therein, and for carrying the fuel fines upwardly through a turbulent zone defined in the housing between rotating spiders that include widely spaced radial blades that are oppositely angled to generate opposing air flows to further pulverize the entrained fuel fines autogenously by attrition. The entrained fuel fines in the rising column of air are then discharged from the housing into a burner for the pulverized solid fuel.
Claims7
Apparatus for pulverizing coarsely-divided, solid fuel, such as coal, and for feeding the pulverized fuel to a burner, comprising an upstanding housing having side, bottom and top walls;
- an upstanding shaft axially mounted for rotation within said housing;
- means for rotating the shaft;
- a slinger having an annular opening therethrough concentric with and closely encircling said shaft, said slinger being secured to the shaft at the bottom of the housing, being peripherally spaced from the housing side walls, and being constructed to catch coarsely divided solid fuel that is fed to the housing and to sling it outwardly to impact against the interior wall surface of the housing so as to disintegrate said solid fuel;
- fan means secured to the shaft immediately below the top wall of the housing;
- air-turbulating means comprising a pair of spiders, each including a hub secured to said shaft within the interior of the housing, from which hub extend a plurality of relatively widely spaced apart radial vanes, the vanes on one hub being angled from the vertical oppositely to the vanes of the other hub for creating intense turbulence and size attrition of solid fuel particles in the zone between the spiders of the pair as air and solid fuel particles flow upwardly therethrough under the influence of said fan means, said interior of the housing between the slinger and the fan means being long relative to width and being substantially open around said shaft and throughout for upward turbulent flow of air and solid fuel particles;
- air-inlet means in the housing below said slinger so that air will flow upwardly through said annular opening as well as peripherally of the slinger, entraining fine solid fuel particles during passage through said housing interior for further pulverization by size attrition between said spiders;
- outlet means provided through the side wall of the housing adjacent to said fan means, said outlet means being adapted for connection with said burner;
- and solid fuel input means leading into the housing and positioned to feed coarsely-divided solid fuel onto said slinger.
Apparatus for pulverizing coarsely-divided, solid fuel, such as coal, and for feeding the pulverized fuel to a burner, comprising an upstanding housing having side, bottom and top walls;
- an upstanding shaft mounted for rotation within said housing;
- means for rotating the shaft;
- a slinger secured to the shaft at the bottom of the housing, said slinger being open around said shaft for the passage of a column of air upwardly around said shaft and being otherwise constructed to catch coarsely-divided solid fuel that is fed to the housing and to sling it outwardly to impact against the interior wall surface of the housing so as to disintegrate said solid fuel;
- fan means secured to the shaft immediately below the top wall of the housing;
- air-inlet means in the bottom wall of the housing communicating with said slinger opening;
- outlet means provided through the side wall of the housing at about the level of said fan means, said outlet means being adapted for connection with said burner;
- air-turbulating means comprising relatively widely spaced vanes secured to said shaft within said interior of the housing for creating turbulence and attrition of solid fuel particles throughout said interior of the housing as air and solid fuel particles flow upwardly therethrough under the influence of said fan means, said interior of the housing between the slinger and the fan means being long relative to width and being substantially open around said shaft and throughout for upward turbulent flow of air and solid fuel particles;
- and solid fuel input means leading into the housing and positioned to feed coarsely-divided solid fuel onto said slinger;
- there being lower and upper sets of vanes, the vanes of each set being angled to direct flow toward the other set of vanes.
Dependencies are inferred from the claim text.