Pollutant-free low temperature combustion process having carbonaceous fuel suspended in alkaline aqueous solution
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United States of America Patent
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Dec 30, 1980
Grant Date -
N/A
app pub date -
Oct 2, 1978
filing date -
Oct 2, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A continuous process for the combustion of carbonaceous fuels under conditions such that oxides of nitrogen are not formed and oxides of sulfur and particles of ash are effectively prevented from contaminating the gaseous products released to the atmosphere. Fuel is charged as a slurry in alkaline aqueous solution and contacted with combustion air so that the catalytic properties of both water and alkali operate to permit rapid and complete combustion at unusually low temperatures. Useful heat is extracted from the heated mixture. At the low combustion temperatures, sulfur in the fuel oxidizes to the trioxide which dissolves completely in the alkaline liquid phase which also retains particles of ash and unburned fuel.
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