Division of Environmental Physics - User: anka
Faculty of Mathematics, Physics and Informatics, Comenius University Bratislava

Microdischarge in Porous Ceramics for Exhaust Gas Cleaning

Sawada J.,Matsui Y., Hensel K., Koyamoto I., Takashima K., Katsura S., Mizuno A.
5th International Conference on Applied Electrostatics ICAES 2004, Shanghai (China), November 2-5, 128-131 (2004), published in the book 'Recent Development in Applied Electrostatics', editors S. Keping and Y. Gefei, Elsevier (2004)

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Abstract:

In this study，a novel NOx removal method using microischarge in porous ceramics for exhaust gas cleaning was examined. Micro-discharge consists of many discharges in narrow channels inside porous ceramics，and transition to flashover can be suppressed due to narrow channel. The microdischarge was generated by 60 Hz ac high voltage using 29 mm diameter ceramics plate with lO W electrical input，and was applied for the cleaning of exhaust gas from diesel engine. Two kinds of
ceramics with different pore size of 15 μm and 90 um were used. Simulated gas consisted of NO，O2，N2(0.01%，10%，balance)，and C2H4(0%，0.3% or 0.6%) was supplemented as additive at some conditions. NO oxidation experiments were carried out at 20・C and 150・C. As a result， oxidation ability without the C2~ addition was higher than that with the additive at 20・c.