Thermal ash agglomeration process
This patent describes a process for thermal agglomeration of high melting temperature ashes wherein a carbonaceous material is introduced into a fluidized bed supported upon and maintained fluidized by fluidizing gas introduced through a perforated sloping bed support grid having a density/size selective solids withdrawal conduit at a base portion of the bed with upflowing discharge control gas. It comprises: introducing one of a fuel mixture and an oxygen mixture into the fluidized bed; each the fuel mixture and the oxygen mixture being introduced through an inlet positioned above the perforated sloping bed support grid producing a hot zone within the fluidized bed having a hot zone temperature of about 2000[degrees]F to about 5000[degrees]F; and at least one of the withdrawal conduit and a central jet pipe positioned in the withdrawal conduit; and maintaining a bulk-bed temperature in the fluidized bed of about 600[degrees]F to about 3000[degrees]F.
- Assignee:
- Inst. of Gas Technology, Chicago, IL (United States)
- Patent Number(s):
- A; US 5158449
- Application Number:
- PPN: US 7-763 903
- OSTI ID:
- 6879112
- Country of Publication:
- United States
- Language:
- English
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AGGLOMERATING ASH PROCESS
AGGLOMERATION
CHEMICAL REACTIONS
COAL GASIFICATION
COMBUSTION
DISPERSIONS
ELEMENTS
FLUIDIZED-BED COMBUSTION
FLUIDS
GASES
GASIFICATION
MIXTURES
NONMETALS
OXIDATION
OXYGEN
SYNTHESIS GAS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
THERMOCHEMICAL PROCESSES