Dual delayed coking of coal liquefaction product
US4216074A · kind A · utility
18Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1978 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | Aug 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G1/006
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Coal which is liquefied in the presence of a pasting solvent, is separated into an ash free and an ash containing coal liquefaction product. Each of such products is delayed coked in separate zones with the vapors from such zones being introduced into a common combination coker-fractionator to recover ash containing and ash free coking recycle, pasting solvent for the liquefaction and lighter products. The process is particulary applicable to coal liquefaction products produced from high ash containing coals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.