B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
122/27, 23/348
B01D 53/34 (2006.01) B01D 53/50 (2006.01) F23J 7/00 (2006.01)
Patent
CA 1309571
ABSTRACT METHOD AND APPARATUS FOR REDUCING SULFUR DIOXIDE CONTENT IN FLUE GASES A method and apparatus are employed to reduce the sulfur dioxide produced by the combustion of a sulfur-containing fuel in a combustion chamber. Part of the combustion air is introduced into the combustion chamber with and closely adjacent the fuel. Another part of the combustion air is introduced into the combustion chamber above and downstream of the fuel and relatively remote therefrom under conditions which buffer the flame front and reduce peak flame temperatures therein. Finely divided limestone particles or the like are aspirated into the combustion chamber by the air introduced above the fuel and distributed thereby throughout the gases flowing downstream through the combustion chamber wherein the limestone particles are calcined to lime particles which react with the sulfur dioxide in the combustion reaction gases to produce calcium sulfate. There is no premixing of the particles and the aspirating air before they enter the combustion chamber. Various parameters are controlled to produce the desired results.
540139
Anderson Lee R.
Landreth Ronald R.
Inland Steel Company
Ridout & Maybee Llp
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