Method for removing nitrogen oxides using ferricion-EDTA complex solutions
Patent
·
OSTI ID:5011560
Industrial exhaust gas containing nitrogen oxides is treated with an aqueous solution of an iron chelate complex salt which contains essentially a sulfite salt at the time of treatment whereby nitrogen oxides which have been difficult to catch can be absorbed with a high absorbing rate even when the concentration of nitrogen oxides is low in the exhaust gas or sulfur dioxide is included in the gas, and simultaneous desulfurizing can be attained in this case. Said aqueous solution has a large absorbing capacity and may contain an ion or ions of alkali metal, alkali earth metal or ammonium.
- Assignee:
- Chisso Engineering Co. Ltd.
- Patent Number(s):
- US 4079118
- OSTI ID:
- 5011560
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION CONTROL
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
DENITRIFICATION
DESULFURIZATION
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
INDUSTRIAL PLANTS
IRON COMPLEXES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
TRANSITION ELEMENT COMPLEXES
WASTES
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION CONTROL
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
DENITRIFICATION
DESULFURIZATION
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
INDUSTRIAL PLANTS
IRON COMPLEXES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POWER PLANTS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
TRANSITION ELEMENT COMPLEXES
WASTES