Coal liquefaction process
US4377464A · kind A · utility
3Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1981 |
| Grant date | Mar 22, 1983 |
| Priority date | — |
| Expiry date | Sep 3, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/083
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A C.sub.5 -900.degree. F. (C.sub.5 -482.degree. C.) liquid yield greater than 50 weight percent MAF feed coal is obtained in a coal liquefaction process wherein a selected combination of higher hydrogen partial pressure, longer slurry residence time and increased recycle ash content of the feed slurry are controlled within defined ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.