An extensive experimental study was conducted with two Eastern U. S. oil shales to establish the effects of retorting conditions on leachability and the changes in pore structure. The variables included particle size, heating rate, final retort temperature (400-600 degree C), and the type and velocity of sweep gas. Rapid heat up and vapor removal were found to enhance oil yield. Raw, retorted, and combusted shales were relatively nonporous, but surface areas did increase with retorting. Leachability of various heavy metals from raw and processed shales was studied in the pH range of 1 to 6. The retorting of oil shale in a hydrogen atmosphere resulted in enhanced leaching due to pyrite conversion to FeS.
|Number of pages||27|
|State||Published - Dec 1985|
ASJC Scopus subject areas
- Chemical Engineering (all)
- Fuel Technology
- Geotechnical Engineering and Engineering Geology
- Energy Engineering and Power Technology