| 摘要 |
T 5711 GBR PROCESS FOR THE UPRGRADING OF HEAVY HYDROCARBON OILS A process for upgrading a heavy hydrocarbon oil by involving a non-catalytic thermal hydrogenation zone and a hydrodemetallization zone wherein at least part of the hydrodemetallized product is subjected to atmospheric distillate and at least part of an atomospheric distillate obtained is recycled to the non-catalytic thermal hydrogenation zone. |
