Evaluation of waste pyrolysis characteristics in a pressurized fluidized bed reactor |
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Authors: | Ono A Kurita M Nagashima T Horio M |
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Institution: | Tokyo University of Agriculture and Technology Graduate School BASE, Koganei, Tokyo 184-8588, Japan. |
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Abstract: | To obtain the distribution of fuel components to gas, tar and char in a pressurized fluidized bed waste pyrolyzer, experiments were conducted with a laboratory scale fluidized bed reactor. Waste samples were fed batchwise from the top of the reactor into the fluidized bed of silica sand and pyrolyzed by nitrogen/nitrogen-O2 gas and the effects of pressure, particle size, heating rate and oxygen addition were investigated. In the case of rubber, the char yield tended to increase a little and the tar yield decrease over the pressure of 304-709 kPa. In comparison with the thermogravimetry data it was clearly demonstrated that the char yield from fluidized bed pyrolysis is much lower. A small amount of oxygen addition decreased both tar and char yields but its further increase did not affect them very much. |
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