Coal liquefaction
US3954595A · kind A · utility
13Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Mar 18, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Insoluble material is separated from a coal liquefaction product by gravity settling in the presence of a specified promoter liquid. The settling is effected to recover a net underflow having a specified ash content and the underflow is stripped of valuable products. By controlling the ash content of the underflow, loss of valuable product in the underflow can be minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.