Process and device for treating gas flows
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorDaniel Gary
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Abstract
Process for purifying a gas flow with respect to at least one of the impurities capable of being oxidized and/or reduced which it contains, in which the gas flow is subjected to at least the following steps: (a) compressing the gas flow to a pressure in excess of atmospheric pressure, (b) bringing the compressed gas flow into contact with at least a first bed of particles of a material containing at least one metal peroxide, and (c) bringing the gas flow resulting from step (b) into contact with at least a second bed of at least one catalyst.
Claims14
Process for purifying an air flow with respect to at least one of the impurities which it contains, said impurities being selected from the group consisting of CO, H.sub.2, CH.sub.4, SO.sub.2, NO.sub.x and halogenated compounds, in which the air flow is subjected to at least the following steps:
- (a) compressing the air flow to a pressure in excess of atmospheric pressure so as to obtain a compressed air flow;
- (b) contacting the compressed air flow with at least a first bed of particles comprising at least one mixture comprising a copper oxide, a manganese oxide, and a manganese peroxide, thereby eliminating at least one impurity selected from the group consisting of SO.sub.2, NO.sub.x and halogenated compounds, said contacting being carried out at a temperature greater than or equal to 80.degree. C.;
- and
- (c) bringing the air flow resulting from step (b) into contact with at least a second bed of at least one catalyst for oxidizing CO and one or several impurities selected from the group consisting of H.sub.2 and CH.sub.4 into CO.sub.2 and H.sub.2 O.
Dependencies are inferred from the claim text.