Enhanced flue-gas denitrification using ferrouster dot EDTA and a polyphenolic compound in an aqueous scrubber system

Conference · · Energy and Fuels; (United States)

OSTI ID:5531368

Mendelsohn, M H; Harkness, J B.L. ^[1]

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1. Argonne National Lab., IL (USA)

Previous work in this laboratory has involved studying the possibility of combined NO{sub x}/SO{sub x} scrubbing using various aqueous chemistries with a metal chelate additive. Recently, the authors have focused work on the metal chelate ferrous{center dot}EDTA (Fe(II){center dot}EDTA). A problem encountered in the practical application of Fe(II){center dot}EDTA is that the ferrous ion has been found to oxidize to the corresponding ferric species, leading to a decrease in NO{sub x} removal for the scrubbing solution containing the additive. They have found that addition of a polyphenolic compound leads to a sustained high NO{sub x} removal under various oxidizing conditions. They believe that the improved performance of Fe(II){center dot}EDTA is due to the known capabilities of these organic compounds both to inhibit oxidation of ferrous chelates by dissolved oxygen and to rapidly reduce any ferric ions back to the original ferrous species. these effects are illustrated by the following chemical reactions: O{sub 2}(l) + organic {yields} oxidized organic, and Fe(III) + organic {yields} Fe(II) + oxidized organic.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5531368
• Report Number(s): CONF-900802-; CODEN: ENFUE
• Journal Information: Energy and Fuels; (United States), Vol. 5:2; Conference: 200. American Chemical Society (ACS) national meeting, Washington, DC (United States), 26-31 Aug 1990; ISSN 0887-0624
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
COMBINED SOXNOX PROCESSES
ADDITIVES
FLUE GAS
DENITRIFICATION
AIR POLLUTION CONTROL
CHELATES
COAL
COMBUSTION
DATA
DATA ACQUISITION SYSTEMS
EDTA
FLOWSHEETS
FOSSIL-FUEL POWER PLANTS
GAS ANALYSIS
IRON COMPLEXES
NITROGEN OXIDES
PERFORMANCE TESTING
PHENOLS
REMOVAL
SCRUBBERS
SIMULATION
SULFUR DIOXIDE
AMINO ACIDS
AROMATICS
CARBONACEOUS MATERIALS
CARBOXYLIC ACIDS
CHALCOGENIDES
CHELATING AGENTS
CHEMICAL REACTIONS
COMPLEXES
CONTROL
DIAGRAMS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDROXY COMPOUNDS
INFORMATION
MATERIALS
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPLEXES
WASTES
010800* - Coal
Lignite
& Peat- Waste Management
200202 - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions