| 摘要 |
The invention relates to a method for hydrogenating coal whereby finely crushed coal is stirred into a slurry with a pasting oil. The slurry is pressurized and heated in heat-exchange with hydrogenation products from the top of a hot-separator, and then, by the application of external heat, to the hydrogenation scorching temperature. It is then subjected, in the presence of hydrogen, to catalyticallyaccelerated hydrogenation. Thus, the hydrogenation product is broken down in at least one hot-separator into a top-product in vapour form and a bottom-product containing a heavy, fluiddistillate oil, non-distillable components, and solids. In accordance with the invention, at least some of the distillateoil, separated from the bottom-product in the hot-separator, is returned to the hot-separator. |
