Separation of insoluble material from coal liquefaction product by use of a diluent
US4040957A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1976 |
| Grant date | Aug 9, 1977 |
| Priority date | — |
| Expiry date | Feb 20, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Insoluble materials are separated from a coal liquefaction product having a quinoline insoluble content of greater than 15 wt. % by diluting the product with a diluent which is a solvent for the components which are quinoline soluble and benzene insoluble, with the diluent being added in an amount to provide a mixture having a quinoline insoluble content of no greater than 13 wt. %. Insoluble material is then separated by gravity settling in the presence of a promoter liquid having a 5 volume percent distillation temperature of at least 250.degree. F and a 95 volume percent distillation temperature of at least 350.degree. F and no greater than 750.degree. F, with the promoter liquid having a characterization factor of at least 9.75.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.