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Removal of nitrogen and sulfur oxides from waste gases

Journal Article · · Int. Chem. Eng.; (United States)
OSTI ID:5101048
; ; ; ; ;
An experimental study was made of the effect of temperature, space velocity, and pH value on the removal of sulfur dioxide and nitrogen oxides from gas streams by absorption in aqueous solutions of ammonium sulfite and bisulfite. An analysis of these data indicated that the use of a solution of ammonium sulfite and bisulfite with a pH = 8 is effective for the purification of complex gaseous mitures containing oxides of nitrogen and sulfur. The degree of removal of nitrogen oxides here amounts to 80%, while that for sulfur dioxide is 100%. Reducing the temperature of the absorptive solution has no influence on reduction of the degree of removal of nitrogen oxides from the gases. No nitrous oxide was observed in the chromatographic analysis of the gases after purification, which confirms the validity of the assumption regarding the reduction of the nitrogen oxides to elementary nitrogen.
OSTI ID:
5101048
Journal Information:
Int. Chem. Eng.; (United States), Journal Name: Int. Chem. Eng.; (United States) Vol. 18:1; ISSN INCEA
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
20 FOSSIL-FUELED POWER PLANTS
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42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
AMMONIUM COMPOUNDS
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTIONS
DENITRIFICATION
DESULFURIZATION
DISPERSIONS
FLUE GAS
FLUID FLOW
FOSSIL-FUEL POWER PLANTS
GAS FLOW
GASEOUS WASTES
INDUSTRIAL PLANTS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PH VALUE
POLLUTION CONTROL
POWER PLANTS
REMOVAL
SOLUTIONS
SULFITES
SULFUR COMPOUNDS
SULFUR OXIDES
TEMPERATURE DEPENDENCE
TESTING
THERMAL POWER PLANTS
WASTES