SINTERING OF JORDANIAN OIL SHALE UNDER SIMILAR CONDITIONS OF FLUIDIZED BED COMBUSTION SYSTEMS; pp. 54–65Full article in PDF format | doi: 10.3176/oil.2014.1.06
Oil shale in Jordan and elsewhere faces many obstacles that hinder its utilisation. Recent developments of the utilization of Jordanian oil shale include the establishment of power generation companies that depend on the technology of atmospheric fluidized bed combustion systems (FBC). Sintering is believed to have been the main cause of many operational problems of FBC systems. This work investigates the sintering propensity of ash obtained from oil shale from Jordania’s largest oil shale deposit El-Lajjun, when combusted at different temperatures, as well as major mineral transformations as a function of temperature. The results obtained by the pressure drop sintering technique showed that the sintering temperature is a strong function of the combustion temperature. Two regions of sintering were found: a low temperature sintering region and a high sintering temperature region. The low sintering temperature region starts at around 700 °C where it is believed to be due to the sintering of limestone. On the other hand, the high sintering temperature region, which starts at 900 °C, is believed to be due to the sintering of the wollastonite formed. Scanning Electron Microscope (SEM) images and Brunauer–Emmett–Telle (BET) measurements confirm these findings.
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