석유계 잔사유 및 coal-tar의 핏치 개질 특성
Characterization of Pitch Derived from Petroleum Residue and Coal-tar
Alternative Energy(대체에너지), Petroleum residue(석유계 잔사유), Coal-tar(콜타르), Pitch(핏치)
JIHONG KIM1,2, HYEONGGI KIM3†
Pitch synthesis reaction was studied based on the effect for chemical composition of feedstock.
Feedstock was selected as pyrolyzed fuel oil (PFO) and coal-tar (CT), which are by-products in petroleum and
steel industry. Pitch was prepared at 420°C for 180 minutes on atmospheric pressure by thermal treatment. Thermal
stability and softening point (SP) of the prepared pitches were investigated and their molecular weight distribution
was analyzed by MALDI-TOF. PFO has various aliphatic compounds and coal-tar has high aromaticity with 3
wt% of primary quinoline insolubles. The thermal property of PFO was enhanced with polymerization reaction
during the thermal treatment with increased molecular weight range. But CT was inferior to PFO because of side
reaction by hetero elements. CTP was appeared molecular weight by 0~200 m/z.