LOW-TEMPERATURE PROCESSING OF COLOMBIAN COAL IN EXPERIMENTAL RETORT
V. YEFIMOV
I. PULEMYOTOV
S. DOILOV
Institute of Oil Shale
Tallinn Technical University
12 Järveküla St., Kohtla-Järve
30198 Estonia
| Processing Colombian coal in experimental retort demonstrated a number of specific
features of the process: * Normal downward passage of the initial material through the retort was possible only by dry extraction of the solid residue (semicoke) from the retort; * Low-temperature retorting proceeds smoothly, the residual content of volatiles is readily reduced from 36 % to as low as 2 % producing paraffinic oil and high calorific low ash low sulfur semicoke; * The Colombian low ash coal may be regarded as an attractive feed for retorting in low-temperature zero-waste technology. |