Steam gasification of several kinds of oil shales was investigated under the conditions of 750-950 degree C and atmospheric pressure using a fluidized bed reactor. Oil shale was supplied to the reactor in a batch-wise manner after the reactor was heated to a desired temperature. When compared with pyrolysis, the effect of steam was manifested at the temperature above 850 degree C to give fuel or synthesis gas. Total gas yield was markedly increased by use of potassium carbonate as a catalyst. The product gas from the catalytic gasification was more abundant with H//2 compared with uncatalyzed gasification.
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