Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1992-03-25
1994-02-08
Lewis, Michael
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
4232421, 588256, C01B 2100, C01B 1700
Patent
active
052846369
ABSTRACT:
A process for the stabilization of heavy metals in the ash produced by the combustion of a heavy metals containing fuel, such as municipal solid waste, by introducing into the combustion system a phosphorous oxide specie or elemental yellow phosphorus. The additive can be introduced at any point in the system upstream of the particulate removal device employed in the system. If elemental phosphorus is used, it must be introduced at a point in the system where it will be exposed to an elevated temperature and oxygen, so as to be converted to a phosphorus oxide specie. When elemental phosphorus is introduced into the system downstream of the combustion zone, it is also effective to reduce the NO content of the flue gas.
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Goff Stephen P.
Lewnard John J.
Wang Shoou-I
Air Products and Chemicals Inc.
Kalinchak Stephen G.
Lewis Michael
Marsh William F.
Ryder Thomas G.
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