Process for in situ conversion of coal or the like into oil and gas
US4057293A · kind A · utility
282Cited by
4References
15Claims
0Family size
Inventor
Key dates
| Filing date | Jul 12, 1976 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Jul 12, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S48/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This application discloses a process for accomplishing in situ retorting of coal, or a similar hydrocarbon by constructing a substantially impervious retorting area, and then fragmenting the coal to provide a substantially homogeneous, porous mass. After pyrolysis due to the introduction of oxygen-containing gas at one portion and withdrawal of oil and gas at another portion, the direction of gas flow is reversed to convert the char into a relatively high B.T.U. gas product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.