Catalytic Gasification of Naphtha by Alkali Polyaluminate

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The catalytic gasification of naphtha by K-β''-Al2O3, one of the alkali polyaluminates, was carried out for finding of the most suitable oparating condition and performing the long run, and following results were obtained. Effect of reaction pressure on the composition of gas produced, when placing a hydrogenalytic catalyst in lower part of the catalyst zone, decreased the unsaturated hydrocarbon content and reversed the saturated hydrocarbon content with increase of pressure from 3 to 6kg/cm2·G as shown in Fig. 4. Therefore, a quality as fuel gas had been improved with increase of pressure. The most suitable ratio of steam/oil was 2.0 g/ml, and the deposited carbon was removed from catalyst surface under that ratio. The long run test of 300 hr, under the maximum reaction temperture of 800°C, the pressure of 6kg/cm2·G and steam/oil ratio of 2.0g/ml, was performed, as the results, the catalytic activity and the potassium content in the catalyst did not change all through the long run. Therefore, it was clarified that there was no vaporization of potassium in the catalyst under these operation conditions.
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