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Simultaneous particulates, NO sub x , SO sub x removal from flue gas by all solid-state electrochemical technology [electronic resource]

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Bibliographic Details
Online Access: Online Access
Corporate Author: National Energy Technology Laboratory (U.S.) (Researcher)
Format: Government Document Electronic eBook
Language:English
Published: Morgantown, W.Va. : Oak Ridge, Tenn. : National Energy Technology Laboratory (U.S.) ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1990.
Subjects:
Ruthenium.
Catalysts.
Kinetics.
Perovskites.
Yttrium Compounds.
Document Types.
Control.
Zirconium Oxides.
Combined Soxnox Processes.
Wastes.
Transition Element Compounds.
Catalytic Effects.
Sulfur Compounds.
Oxygen Compounds.
Cerium Oxides.
Platinum Metals.
Ashes.
Pollution Control.
Elements.
Gaseous Wastes.
Flue Gas.
Fly Ash.
Cerium Compounds.
Air Pollution Control.
Electrochemistry.
Zirconium Compounds.
Residues.
Progress Report.
Metals.
Strontium Compounds.
Rare Earth Compounds.
Sulfur Oxides.
Yttrium Oxides.
Electrolytes.
Nitrogen Oxides.
Chemical Reactions.
Electrocatalysts.
Solid Electrolytes.
Nitrogen Compounds.
Alkaline Earth Metal Compounds.
Chemistry.
Oxides.
Transition Elements.
Aerosol Wastes.
Reduction.
Electrochemical Cells.
Chalcogenides.
Fossil-fueled Power Plants.
Description
Abstract:The process control SOₓ, NOₓ, and particulate emission from coal combustion flue gases. It is based on a solid-state, electrochemical reactor which converts NOₓ and SO₂ to nitrogen, sulfur, and oxygen. Sulfur is condensed downstream at a lower temperature. Particulates are removed with a filter or electrostatic precipitator. The process utilizes no other material input (flue gas is the only fluid), has no moving parts, and produces no sludge(s). The reactor consists of an electrochemical cell where the electrolyte is a solid oxygen ion conducting ceramic such as stabilized ceria or zirconia and the electrodes are electronically conductive material(s). Porous metal such as silver or gold were used as electrodes in the experimental work. Acceptable reduction rates and electric power requirements for sulfur dioxide and nitrogen oxide removal were obtained in up to 1% oxygen with ruthenium and strontium ruthenate electrocatalysts. Electrocatalytic improvements are needed for higher oxygen concentrations, with the NO reduction rates and efficiencies being most sensitive to oxygen concentration. The best electrocatalysts were ruthenium and the perovskite strontium ruthenate. 37 refs., 23 figs., 26 tabs.
Item Description:Published through the Information Bridge: DOE Scientific and Technical Information.
04/17/1990.
"doe/pc/79855-t10"
"DE91000002"
Cook, W.J.; Helfritch, D.J. . Environmental Services; Neyman, M.; Keyvani, M.; Cornell, L.P.
Helipump Corp., Cleveland, OH (USA)
Research-Cottrell, Inc., Somerville, NJ (USA). Environmental Services and Technologies Div.
DOE/FE.
Physical Description:Pages: (88 p) : digital, PDF file.

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