Combustion of carbonized rice husk briquettes in a fixed bed
This data relates to the research that was done on the optimization of combustion parameters of carbonized rice husk briquettes in a fixed bed.
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Temperature measurements Nine Type-K thermocouples (TC) with measurement ranges of about 0 to 1360 0C were put into the chamber to monitor temperature at 50 mm intervals and provide the velocity of propagation of the various reaction fronts (drying, devolatilization, or char oxidation). A data logging device (BTM-4208SD) with an accuracy and resolution of 0.4 0C and 0.1 0C respectively, was used to record temperature values after every 10 seconds from 9 different channels. The air-flow rate was determined using LZB–25 and LZB–100 type float flow meters with ranges of 1–25 m3/h and 20–100 m3/h, respectively, with an error of ±0.2 m3/h. Box–Behnken Design The total number of experiments in this research was 17, with 12 experiments for each factor at three levels and five centre experiments. All variables were changed at three equally spaced levels (-1, 0, + 1), as required by BBD. The binder ratio, the air-mass flux and the particle size were coded as x1, x2 and x3, respectively.