| 摘要 |
PURPOSE: An apparatus for volatile organic compounds degradation by non-thermal plasma combined electro-oxidation catalysis is provided, which can design energy conservative type by applying decomposing principle of semi-conductor catalyst to production principle of high voltage plasma. The system can treat large volume of harmful gas and high concentration by arranging the treatment equipment in parallel or series, thus curtailing installation area and saving operation cost. CONSTITUTION: The p type semi-conductor catalyst coated composition is formed as follows: (i) first, p type semi-conductor coating composition has the following formula; T-MO, where, T is titanium dioxide, MO is oxidized metal such as oxidized cobalt, the n type semi-conductor composition is prepared by this composition; (ii) second, n type semi-conductor having following composition, T-M, where, T is titanium dioxide, M is silicon, nickel, silver, n type semi-conductor is prepared based on this composition; (iii) third, p type semi-conductor coating composition having following formula, BT-M-MO, where, B is oxidized bismuth, T is titanium dioxide, M is reaction active metal such as platinum, molybdenum, tungsten, silver, cobalt, MD is vanadium pentoxide, oxidized silver, oxidized cobalt, oxidized nickel, zeolite, the p type semi-conductor coating composition is prepared based on this composition; (iv) the electrode is prepared by a sequence of p/n/p type with 30-50 μm/ 10-20 μm/ 30-50 μm; (v) to this electrode AC of 300-400 kHz, 6-10 kV, 0.5-5A and pulse power of +10 to +15 kV, 0.5-2A are applied to remove volatile organic compound and odorizing matter and to decompose dioxin, decomposing matter of ozone layer such as tetrachlorocarbon, freon gas, methyl chloroform and methyl bromide.
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