Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1990-05-14
1990-12-25
Heller, Gregory A.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
423244, B01J 800, C01B 2100, C01B 1700
Patent
active
049801384
ABSTRACT:
A process is disclosed in which a flue gas from a coal fired burner is treated in a dry phase to remove both NO.sub.x and SO.sub.x which includes SO.sub.2 and SO.sub.3. This invention provides for use of an absorbent comprising of fly ash, calcium oxide and a hydrated sulfate of calcium to remove the SO.sub.2 and/or SO.sub.3 component while also incorporating either a high carbon ash, ash derived from a high-vanadium residual oil, iron oxide or iron oxides to remove NO.sub.x. Process conditions comprise a temperature in the range of 200.degree. C. to 450.degree. C.
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Heller Gregory A.
Muller Kimbley L.
Shell Oil Company
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