Method and apparatus for obtaining energy
AssigneeStearns Catalytic World Corporation
InventorsWarnie L. Sage, Thomas E. Stringfellow
Life of this patent
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Abstract
A low BTU, low volatile content, low carbon and high ash fuel is combusted in a combined shaft kiln combustor and fluidized bed combustor to generate heat which is converted to useful energy. The fluidized bed combustor is mounted vertically above the shaft kiln combustor. A venturi is provided in a passageway connecting the shaft kiln combustor and the fluidized bed combustor to produce a gaseous stream moving at a velocity sufficient to separate finer particles from the low BTU, low volatile content, low carbon and high ash fuel so that the coarser particles are burned in the shaft kiln combustor and the finer particles are burned in the fluidized bed combustor.
Claims19
A process for obtaining energy from a low BTU, low volatile content, low carbon and high ash fuel using a first combustor having an exit end and a second combustor having an entrance end, comprising:
- providing quantities of a low BTU, low volatile content, low carbon and high ash fuel having various particle sizes;
- forming a passageway between the first combustor and the second combustor by connecting the exit end of the first combustor and the entrance end of the second combustor together;
- introducing the quantities of fuel into said passageway;
- moving a gaseous stream through said passageway at a velocity sufficient to separate the quantities of fuel into finer particles and coarser particles;
- combusting the coarser particles in the first combustor to generate heat;
- combusting the finer particles in the second combustor to generate heat;
- and
- using the generated heat to provide useful energy.
An apparatus for obtaining energy from a low BTU, low volatile content, low carbon and high ash fuel using a first combustor having an exit end and a second combustor having an entrance end, comprising:
- mounting means for mounting the second combustor to the first combustor;
- means forming a passageway between the exit end of the first combustor and the entrance end of the second combustor;
- inlet means for introducing quantities of the low BTU, low volatile content, low carbon and high ash fuel into said means forming said passageway;
- means for providing a moving gaseous stream through said means forming said passageway, said gaseous stream moving at a velocity sufficient to separate the quantities of fuel into finer particles and coarser particles whereby said coarser particles can then move to the first combustor to generate heat and said finer particles can then move to the second combustor to generate heat;
- and
- means responsive to said generated heat to provide useful energy.
Dependencies are inferred from the claim text.