Coal depolymerization and hydroprocessing
US5294349A · kind A · utility
8Cited by
31References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1992 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Aug 4, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2531/80
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for hydroprocessing coal to hydrocarbon oils wherein coal is depolymerized at low temperatures by contacting finely divided coal with a hard acid and soft base. The depolymerized coal is then hydroprocessed to hydrocarbon oils by forming a mixture with a coal conversion catalyst or precursor thereof, and hydroprocessing the mixture at temperatures of from 250.degree. to 550.degree. C. and hydrogen partial pressures of from 2100 to 35000 kPa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.