H - Electricity – 05 – H
Patent
H - Electricity
05
H
204/180, 204/96.
H05H 1/42 (2006.01) F27D 99/00 (2010.01)
Patent
CA 1174637
ABSTRACT A method and an apparatus are disclosed for heating process air for industrial purposes to a pre- determined temperature. The method comprises passing a first air-flow portion through a plasma generator and thus heating said portion to a temperature suffi- ciently high to cause the ionization of nitrogen and oxygen in the portion and thus form a plasma gas, immediately thereafter adding to said plasma gas a material containing carbon and/or hydrocarbon in sufficient quantity that when said material is reacted with the plasma gas, the ratio CO+H2/CO2+H2O is at least 0.1 thereby substantially avoiding the forma- tion of nitrogen oxide; and immediately thereafter mixing with the plasma gas, with its content of material containing carbon and/or hydrocarbon, a second air-flow in such proportion that the pre- determined temperature is achieved in the final air mixture.
394830
Mathisson Goran
Santen Sven
Fetherstonhaugh & Co.
Skf Steel Engineering Aktiebolag
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