Combination air-blown and oxygen-blown underground coal gasification process
US4662443A · kind A · utility
286Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1985 |
| Grant date | May 5, 1987 |
| Priority date | — |
| Expiry date | Dec 5, 2005 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/243
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Use of an air-blown underground coal gasification plant to produce low-Btu gas thereby providing boiler fuel needed for an oxygen-blown underground coal gasification plant. The product from the oxygen-blown plant can be used for the production of synthetic natural gas or other uses. A preferred production gasification is also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.