Method for removing nitrogen oxides and organic chlorine compoun

Details Method for removing nitrogen oxides and organic chlorine compoun Method for removing nitrogen oxides and organic chlorine compoun

1991-11-12

1994-03-15

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

4232451, 4232453, B01J 800, C01B 2100, C10H 2300

Patent

active

052944190

ABSTRACT:
A method for removing nitrogen oxides and organic chlorine compounds from a combustion waste gas, which comprises the steps of: adding ammonia (NH.sub.3) as a reducing agent to a combustion waste gas containing nitrogen oxides and organic chlorine compounds; causing the combustion waste gas added with ammonia to contact with, while keeping the temperature of the combustion waste gas within a prescribed range, with a catalyst comprising at least one selected from the group consisting of platinum (Pt), palladium (Pd), ruthenium (Ru), manganese (Mn), copper (Cu), chromium (Cr) and iron (Fe) and oxides thereof, supported on the surface of a carrier comprising at least one selected from the group consisting of titanium oxide (TiO.sub.2), silicon oxide (SiO.sub.2), aluminum oxide (Al.sub.2 O.sub.3) and zirconium oxide (ZrO.sub.2), thereby removing nitrogen oxides and organic chlorine compounds from the combustion waste gas.

REFERENCES:
patent: 4389382 (1983-06-01), Gandhi et al.
patent: 4981659 (1991-01-01), Chuang et al.

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