Method for separation of impurities from flowing gas

Details Method for separation of impurities from flowing gas Method for separation of impurities from flowing gas

1988-06-29

1989-08-22

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423235, 423244, B01J 800, C01B 1700

Patent

active

048594385

ABSTRACT:
Method of separating substances, notably SO.sub.2 and NO.sub.x where x is 1 or 2, from cooled flue gases, such as combustion exhaust gases containing low levels of impurities of the same. The gases are contacted with at least one substantially dry particulate absorbent including NaHCO.sub.3 which, at a release temperature below 400.degree. C., decomposes to form an activated absorbent including Na.sub.2 CO.sub.3 which serves to remove the harmful substances from the flowing gas.

REFERENCES:
patent: 3498743 (1970-03-01), Kyllonen
patent: 3880629 (1975-04-01), Dulin et al.
patent: 4105744 (1978-08-01), Erdoess et al.
patent: 4767605 (1988-08-01), Lindbauer et al.

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