Fuel and related compositions – Liquid fuels – Aluminum or heavy metal – other than lead – containing
Patent
1978-08-25
1981-01-20
Dees, Carl F.
Fuel and related compositions
Liquid fuels
Aluminum or heavy metal, other than lead, containing
44 2, 241 19, 241 20, 241 24, 241 73, 241188R, 241DIG38, C10L 546, C10L 548, B02C 2314
Patent
active
042459990
ABSTRACT:
A chopped mixture derived from municipal solid waste, free of ferrous metal is fed into the open upper end of a vertical rotor chamber for contact sequentially by an upper and lower high-speed rotor, with the rotor blades of the rotors further chopping the mixture and imparting centrifugal force to the mixture particles. Selectifier screens concentrically surround the rotor blades at the upper and lower rotor positions and have mesh openings which effect ballistic separation and elimination of glass, grit, sand, dust and fiber elements at these levels dependent upon the screen size openings. The two rotors are separated to form an intermediate treatment zone permitting liquid or solid spray of the mixture particles passing vertically downward from the upper rotor zone to the lower rotor zone. The lower end of the rotor chamber opens toward a horizontal high-velocity airflow which is accelerated by modified venturi action to suck oversize lightweight plastic film out of the rotor treating zones to effect isolation of light-weight materials from the rotor zones to insure substantially plastic-free, low ash content, solid waste refuse derived fuel, particularly as discharged from the lower rotor zone being sized uniformly through the lower selectifier screen. Other modifications of the process are described, as well as important alternate uses for this garbage sorting machine forming the subject of this disclosure.
REFERENCES:
patent: 3506414 (1970-04-01), Skendrovic
patent: 3910775 (1975-10-01), Jackman
patent: 4026678 (1977-05-01), Livingston
patent: 4072273 (1978-02-01), Reiniger
Dees Carl F.
Kent Edgar H.
Safe, Jr. Kenneth S.
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