| 摘要 |
In a process for the retorting of oil shale wherein hot flue gases containing oxygen are used for preheating the raw oil shale and wherein, additionally, a combustible sludge containing particulate matter and bottoms oil is produced, method and apparatus are disclosed for forming a combustible mixture of the sludge and the gases whereby the sludge is combusted to raise the temperature of the gases and produce only entrained particulate matter as a by-product. By so doing, the requirement for additional fuel to heat the gases to operational temperatures is reduced and the sludge is eliminated as a by-product of the process requiring separate disposal. Rather, the entrained particulate matter is removed and disposed of along with particulate matter normally produced within the process.
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