Furnaces – Process – Incinerating refuse
Patent
1979-08-24
1981-03-03
Favors, Edward G.
Furnaces
Process
Incinerating refuse
110219, 110238, 110343, F23J 100
Patent
active
042534089
ABSTRACT:
A method of preventing corrosion of incinerators designed to burn sewage sisting essentially of from about 90 to 98 percent water and from about 2 to 10 percent waste solids by increasing the fusion temperature range of the ash product above the operating temperature of the interior surfaces of the incinerator. The sewage is mixed with additive materials selected from the group SiO.sub.2, CaO, Al.sub.2 O.sub.3, MgO wherein the CaO, Al.sub.2 O.sub.3 and MgO are selected from within the range of 10 to 30 percent of the weight of the waste solids and the SiO.sub.2 is selected from within the range of 25 to 30 percent of the weight of the waste solids. Thereafter, the sewage-additive mixture is injected or otherwise dispersed into the combustion zone of an incinerator such that the waste solids and additive particles remain in contact therein for sufficient time for the additives to chemically combine with sewage solids and form combustion products having fusion temperatures ranges above the operating temperatures of the incinerator surfaces.
REFERENCES:
patent: 2800172 (1957-07-01), Romer et al.
patent: 3888193 (1975-06-01), Kishigami et al.
patent: 3921543 (1975-11-01), Menigat et al.
patent: 4159683 (1979-07-01), Hughes et al.
Favors Edward G.
Marsh L. A.
Randolph W. W.
Sciascia R. S.
The United States of America as represented by the Secretary of
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