| 摘要 |
Insoluble material is separated from a coal liquefaction product by gravity settling in at least two gravity settlers, with overflow from a previous settler being used as feed to the subsequent settler. A promoter liquid having characterization factor of at least 9.75, a 5 volume percent distillation temperature of at least 250 DEG F and a 95 volume percent distillation temperature of at least 350 DEG F. and no greater than 750 DEG F. is employed in each settler. |
