| 摘要 |
<p>Abstract of the Disclosure The present invention relates to an apparatus for effectively recovering kerogen contained in oil shale in the form of heavy oil by alternate operation, and a recovery method using the same. More particularly, the present invention relates to an apparatus and method for recovery of heavy oil, which (i) maximizes heating and mixing effects by providing a heating coil and a heating jacket, through which a heat medium passes, and a support which supports the heating coil in an extractor body; (ii) heats and stirs sludge containing heavy oil with decomposed kerogen, extracted by a kerogen extractor, by means of an intermediate storage tank; (iii) recovers an extract or low-boiling point oil discharged while the pressure of the extractor is returned to atmospheric pressure to be reused by the intermediate storage tank; (iv) separates the sludge discharged from the intermediate storage tank into mixed oil of heavy oil and extract and residual sludge by means of a sludge separator; and (v) separates the mixed oil into the extract and heavy oil by means of a heavy oil distillation column and heats the separated extracted to be reused. Here, with the alternate operation, it is possible to continuously treat oil shale and further use an extraction additive. According to the present invention, it is possible to significantly increase the recovery rate of heavy oil and increase the extraction yield of kerogen components at relatively low temperatures, thus reducing the cost of energy per unit price for crude oil production and significantly reducing air pollutants since there is no need to burn residues, compared with existent retorting methods.</p> |
