Furnaces – Process – Treating fuel constituent or combustion product
Patent
1994-08-03
1995-12-05
Gromada, Denise L.
Furnaces
Process
Treating fuel constituent or combustion product
110211, 110346, 110229, F23J 1100
Patent
active
054719372
ABSTRACT:
A method for the destruction of contaminated waste material comprising the steps of sufficiently heating the waste material in an oxygen deficient atmosphere to pyrolyze the material thereby producing a volatile fuel gas stream and a decontaminated solid residue, separately removing the fuel gas stream and the decontaminated solid residue, adjusting the stoichiometric ratio of the fuel gas stream reactant components for combustion downstream, oxidatively combusting the adjusted fuel gas stream to produce a low velocity, low oxygen gas stream, and a high velocity, low oxygen carrier gas stream, recycling at least a portion of the high velocity, low oxygen carrier gas stream for direct contact with the waste material to provide heat for pyrolysis of the same, contacting at least a portion of the low velocity, low oxygen carrier gas stream with water to produce an oxygen rich, substantially inert, heat exchange gas stream and indirectly heating the contaminated material with the heat exchange gas stream to provide supplemental heat.
REFERENCES:
patent: 4432290 (1984-02-01), Ishii et al.
patent: 4732092 (1988-03-01), Gould
patent: 4840129 (1989-06-01), Jelinek
Jones John F.
Kosky John P.
Gromada Denise L.
MEI Corporation
Tinker Susanne C.
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