EFFECT OF CHLORIDES IN COAL CHARGES ONYIELD AND QUALITY OF COAL TAR

摘要

Taking into account final properties of carbonisation products, this project investigated effects of chlorides in coalrncharge.Based on recent experiments, five chlorides, NaCl, PbCl2, ZnCl2, CuCl2 and AlCl3, were employed for therninvestigation. A precursor, which had been impregnated by 5% wt. Concentration solutions of these substances, wasrncarbonised to the temperature of 930 °C inside a special retort. During the process, volatile fractions were captured for thernmass balance specifications. Consequently both liquid and solid phases of the product were obtained. The evaluation for thernliquid phase indicated an increase in content of aromatic hydrocarbons except naphthalene, 1-methylnaphthalene and 2-rnmethylnaphthalene, as well as an increase of aromaticity. Obtained mesophase showed the differences in a rate of anisotropy.