EXPERIMENTAL OIL SHALE RETORT
WITH SEPARATE TAKE-OFF OF OIL VAPOURS
AND GASIFICATION GAS
V. YEFIMOV
S. DOILOV
I. PULEMYOTOV
V. OMELYANENKO
S. YEFIMOV
Oil Shale Research Institute
Kohtla-Järve, Estonia
| An experimental 600-700 kg per day retort for low temperature processing (semicoking) of large particle oil shale has been developed and constructed. The retort is intended essentially for high efficiency processing of organic-rich shales in a thin oil shale bed providing separate take-off of oil vapours and gasification gases. Air and steam for gasification are injected into the upper part of gasifier, the produced gasification gas is drawn off from its lower part. Tests have shown that in this retort it is possible to practically avoid the overflow of gas from the gasifier into the retorting zone (or vice versa) by maintaining required hydraulic conditions in the retort. |