Furnaces – With fuel treatment means – Preliminary refuse treatment means
Patent
1975-08-22
1976-11-30
Sprague, Kenneth W.
Furnaces
With fuel treatment means
Preliminary refuse treatment means
110 28J, 110119, F23G 500, F23J 1500
Patent
active
039942449
ABSTRACT:
Waste material such as sewage biotreater sludge which is partially combustible and contains a substantial proportion of ash, including easily fusible salts, is incinerated in a fluidized bed incinerator provided with a special quench system which protects against premature plugging of the incinerator vapor withdrawal lines. The quench consists of a refractory-lined metal conduit ending approximately flush with the refractory lining of the incinerator in the upper portion of the incinerator dome, a second conduit at approximately right angles for withdrawal of vapors from the first conduit and quench water injection means adapted to inject quench water into the opening of the second conduit. Optionally, the system may be equipped with means for injecting a small proportion of the quench water into the incinerator vapor space just upstream from the vapor offtake conduit and with means for injecting a small proportion of the quench water against the vapor offtake conduit near its intake end, so as to wet the metal surface of the conduit. In the latter case, a lip is mounted on said intake end so as to distribute the water on the full circumference of the conduit and to keep water from the incinerator lining.
REFERENCES:
patent: 3476062 (1969-11-01), Ramires
patent: 3736886 (1973-06-01), Menigat
patent: 3921543 (1975-11-01), Menigat
Gwyn John Edward
Pledger William Ridley
Shell Oil Company
Sprague Kenneth W.
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