Process for removing NO.sub.x and SO.sub.x from a gaseous mixtur

Details Process for removing NO.sub.x and SO.sub.x from a gaseous mixtur Process for removing NO.sub.x and SO.sub.x from a gaseous mixtur

1986-11-21

1989-08-01

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423242, 423545, 423567R, 423570, C01B 2100, C01B 1700, C01B 1702, C01C 124

Patent

active

048531936

ABSTRACT:
A combination gas denitrogenation and desulfurization process is provided in which a gaseous mixture comprising NO.sub.x, SO.sub.x and O.sub.2 is reacted with excess NH.sub.3 to reduce the NO.sub.x to N.sub.2 and the resulting gaseous effluent comprising the unreacted ammonia and SO.sub.x is passed to a gas desulfurization zone to form an ammonium salt of an acid of sulfur which can be recovered and used as such or converted to elemental sulfur.

REFERENCES:
patent: 3900554 (1975-08-01), Lyon
patent: 4029752 (1977-06-01), Cahn
patent: 4051225 (1977-09-01), Shiga et al.
patent: 4115515 (1978-09-01), Tenner et al.
patent: 4272497 (1981-06-01), Takahashi et al.
patent: 4288420 (1981-09-01), Ito et al.
patent: 4400363 (1983-08-01), Grochowski et al.
patent: 4507269 (1985-03-01), Dean et al.

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