Ionic contact media for electrodes and soil in conduction heating
US5586213A · kind A · utility
61Cited by
45References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1992 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Feb 5, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB09C2101/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Ionic contact is established and maintained between electrodes and soil in ohmic heating of a subsurface formation for recovery of volatile and semi-volatile materials, such as hazardous waste, hydrocarbon-like materials, and valuable minerals having thermally responsive properties. A compressed, dry sponge is wrapped around an electrode, which is then inserted into a bore hole. A conductive liquid is added to the bore hole, causing the sponge to swell, creating a stable and substantial interface for the flow of heating currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.