REMOVAL OF NITROGEN OXIDE

PURPOSE:To efficiently remove nitrogen oxide even in an oxidizing atmosphere by generating a hydrogen ion on the anode surface of a solid electrolyte to move the same to the cathode surface thereof and reducing nitrogen oxide in gas to be treated by precipitated hydrogen. CONSTITUTION:Gas to be trea...

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Bibliographische Detailangaben
1. Verfasser:	ABE KATSUJI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	PURPOSE:To efficiently remove nitrogen oxide even in an oxidizing atmosphere by generating a hydrogen ion on the anode surface of a solid electrolyte to move the same to the cathode surface thereof and reducing nitrogen oxide in gas to be treated by precipitated hydrogen. CONSTITUTION:Gas to be treated containing water and nitrogen oxide flowing from a nozzle 8 toward a nozzle 9 is brought into contact with a hydrogen ion conductive solid electrolyte 2 (e.g. a sintered body of a BaCeO3 powder or the like) having anode and cathode surfaces 4, 3 to which DC voltage is applied. At the same time, a hydrogen ion is generated on the anode surface 4 by the electrolytic oxidation of water and moved to the cathode surface 3 to be precipitated as hydrogen. Nitrogen oxide in the gas to be treated is reduced by this hydrogen. As a result, nitrogen oxide can be efficiently removed even in an oxidizing atmosphere.