Pyrolysis of phenols from lignite semicoking tar at 750-900 degreesC and co
ntact time of 0.5-6.0 s was studied. The yields of pyrocarbon, pyrolysis ga
s, and liquid products and the group and component composition of the liqui
d products and pyrolysis gas were determined. The total analysis of the mai
n groups of compounds in liquid products was performed.