INFLUENCE OF DIFFERENT FACTORS ON HYDROGEN ION EXPONENT (pH) OF THE TAR WATER
FROM KIVITER VERTICAL RETORTS
V. YEFIMOV
S. DOILOV
Tallinn Technical University,
Institute of Oil Shale
12 Järveküla St., Kohtla-Järve
30328 Estonia
| The pH value of tar waters from the Kiviter retorts depends, first of all, on the dust carry-over with oil vapours and gas from the retorts. This dust contains free calcium oxide that initiates alkaline reaction of tar water. The recommendations for diminishing the dust carry-over are presented: lowering the temperature in gas outlets; using four gas outlets for 1000 t retorts; transition to the use of low-concentrated oil shale, processing oil shale in circular retorting chamber, etc. |