Purification of Diesel Exhaust Gas Using Reducing Catalysers
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Katsuharu Kinoshita
Abstract
Diesel engine exhaust gas is known to be one cause of photochemical smog, which is so damaging to city environments. However, because of its high thermal efficiency and economic advantages, the diesel engine is not easily dispensable. The authors have previously conducted a series of experiments to assess the purifying effects of a diesel gas purification device employing an electric trap. It has been confirmed that an extraction rate of 60∼75 % for black smoke can be achieved using this apparatus. But the extraction effect for nitrogen oxides (NOx) is insufficient if the electro-trap device is used on its own. To improve its performance, experiments have now been undertaken using the same device in combination with various types of attached catalysers to oxidise and remove the nitrogen in the exhaust gas. Utilising a commercial 3-way catalyser, it proved difficult to maintain the gas at a suitable temperature, so that no outstanding result could be obtained. Nor was any significant result observed from the use of an ozoniser. However, with a zeolyte catalyser, it was possible to achieve a NOx reduction of 20∼30 %. This latter experiment is reported in the present paper.
© 2017 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Masthead
- Contents
- Preface
- Editorial
- Research Articles
- An Industrial-Scale Experiment of Pulse Corona Process for Removing SO2 and NOx from Combustion Flue Gas
- Ozone and the Other Gaseous By-products Generated from Dry Air by the Trench Type Barrier Discharge Plasma Reactor
- Purification of Diesel Exhaust Gas Using Reducing Catalysers
- Reduction of NO2 in N2 by Non-Thermal Plasmas
- The Effect of Ammonia Injection Rate and Discharge Power on the Reduction of NOx from a Combustion Flue Gas by Superimposing Barrier Discharge Reactors
- Removal of NOx from Dry Air by a Pulsed Corona Discharge with Magnetic Field
- Comparison of Pulsed Corona and Electron Beam Processing of Hazardous Air Pollutants
- Effect of Gas Temperature on Pulsed Corona Discharge Processing of Acetone, Benzene and Ethylene
- Non-Thermal Plasma Techniques for the Reduction of Volatile Organic Compounds in Air Streams: A Critical Review
- Decomposition of Carbon Tetrachloride by a Packed Bed Plasma Reactor
- Non-Thermal Plasma Processing for VOCs Decomposition and NOx Removal in Flue Gas
- Removal of Xylene, Trichloroethylene and Their Mixtures from Air Stream by a Pulsed Corona Discharge Induced Plasma Reactor
- Barrier Discharge Optimization for Nitric Oxide Destruction
Artikel in diesem Heft
- Masthead
- Contents
- Preface
- Editorial
- Research Articles
- An Industrial-Scale Experiment of Pulse Corona Process for Removing SO2 and NOx from Combustion Flue Gas
- Ozone and the Other Gaseous By-products Generated from Dry Air by the Trench Type Barrier Discharge Plasma Reactor
- Purification of Diesel Exhaust Gas Using Reducing Catalysers
- Reduction of NO2 in N2 by Non-Thermal Plasmas
- The Effect of Ammonia Injection Rate and Discharge Power on the Reduction of NOx from a Combustion Flue Gas by Superimposing Barrier Discharge Reactors
- Removal of NOx from Dry Air by a Pulsed Corona Discharge with Magnetic Field
- Comparison of Pulsed Corona and Electron Beam Processing of Hazardous Air Pollutants
- Effect of Gas Temperature on Pulsed Corona Discharge Processing of Acetone, Benzene and Ethylene
- Non-Thermal Plasma Techniques for the Reduction of Volatile Organic Compounds in Air Streams: A Critical Review
- Decomposition of Carbon Tetrachloride by a Packed Bed Plasma Reactor
- Non-Thermal Plasma Processing for VOCs Decomposition and NOx Removal in Flue Gas
- Removal of Xylene, Trichloroethylene and Their Mixtures from Air Stream by a Pulsed Corona Discharge Induced Plasma Reactor
- Barrier Discharge Optimization for Nitric Oxide Destruction
