| 초록 |
Properties of two petroleum residues, fluid catalytic cracking decant oil (FCC-DO) and pyrolysis fuel oil (PFO) were compared, and characterizations of pitches prepared from them and their blends were investigated. The blends were prepared with different compositions. As the content of PFO increased, softening point and carbon yield of the resulting pitches increased, but production yield decreased. In addition, carbon residue and QI were also increased with PFO. These tendencies were primarily resulted from complexity of molecular structure in PFO and FCC-DO; the molecular weight distribution associated with portion of aromatic and aliphatic components with types of chains. Based on SIMDIS analysis, boiling points of PFO broadly distributed from 100 to 720℃, whereas over 90% of components in FCC-DO ranged from 220 to 540℃. In the current study, we found that the rheological properties of the pitches can be adjusted by complex molecular distribution in petroleum residues. |
