In a catalytic combustion deodorizer, it is advantageous for the running cost to use the premixed fuel combustion technique which requires that the premixed gas be burned completely in the catalysts. This paper describes the catalytic combustion characteristics of the premixed gas and the stable combustion region for kerosene in platinum catalysts, which were examined using a fundamental experimental setup. The stable combustion conditions were obtained under the inlet temperature Tin of the premixed fuel gas, where Tin≧465 K, the space velocity SV≦24000 hr-1, and the equivalence ratio is the optimum value, depending on the Tin. Applying these results to the catalytic deodorizer with a heat exchanger, we found that in order to broaden the stable combustion region, it was effective to increase the space velocity, the heat exchange ratio, and the inlet temperature of a foul-smelling gas.
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