Method of removing nitrogen oxides (NO.sub.x) from gases, especi

Details Method of removing nitrogen oxides (NO.sub.x) from gases, especi Method of removing nitrogen oxides (NO.sub.x) from gases, especi

1987-10-02

1988-12-06

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423239, 423242, 423351, C01B 2100, C01C 300

Patent

active

047895314

ABSTRACT:
NO.sub.x is removed from flue gases by contacting same in the presence of active coke/active carbon and a reducing agent, e.g. NH.sub.3, CO or H.sub.2. According to the invention, the adsorbent is precharged with the reducing agent, thereby increasing the surface area over which the adsorbent can react with the flue gas and decreasing the levels of gas-reducing agent which must be used and which may appear in the cleaned gas.

REFERENCES:
patent: 4044102 (1977-08-01), Muraki et al.
patent: 4046888 (1977-09-01), Maeshima et al.
patent: 4087250 (1978-05-01), Lane et al.
patent: 4469662 (1984-09-01), Hamada et al.
patent: 4500501 (1985-02-01), Hamada et al.

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