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The mixing of solid alternative fuel particles in cement raw materials was studied experimentally by visual observation in a pilot scale rotary kiln. Fuel particles were placed on top of the raw material bed prior to the experiment. The percentage of particles visible above the bed as a function of time was evaluated with the bed predominantly in the rolling bed mode. Experiments were conducted to...
Less than a handful of solid-convective pyrolysis reactors for the production of liquid fuel from biomass have been presented and for only a single reactor a detailed mathematical model has been presented. In this article we present a predictive mathematical model of the pyrolysis process in the Pyrolysis Centrifuge Reactor, a novel solid-convective flash pyrolysis reactor. The model relies on the...
Combustion of tyre char particles with diameters between 102 and 212μm was performed in an experimental laboratory reactor, at temperatures between 750 and 850°C, in an oxidative atmosphere with up to 10vol.% O 2 at 1bar. The observed char combustion time varied from about 9s at 750°C to about 4s at 850°C. Under these conditions the experimental data indicated increasing mass transfer resistance...
A systematic experimental study has been performed in order to investigate the effect of particle size and temperature on the devolatilization rate of large tyre rubber particles. Cylindrical tyre particles with diameters between 7.5 and 22mm were devolatilised in a macro-TGA reactor, at temperatures between 490 and 840°C in an inert atmosphere. The effect of particle size and surrounding temperature...
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