| 학회 |
한국화학공학회 |
| 학술대회 |
2017년 봄 (04/26 ~ 04/28, ICC 제주) |
| 권호 |
23권 1호, p.755 |
| 발표분야 |
에너지 환경 |
| 제목 |
Effect of the amount of DBSA on asphaltene stability/instability in a deasphalting system |
| 초록 |
Effect of dodecylbenzene sulfonic acid (DBSA) on asphaltene aggregation and dispersion in a solvent deasphalting system was investigated in terms of adsorption mechanism of DBSA. Asphaltene removal ratio increased first and then decreased with the increase of concentration of DBSA. The maximum point for asphaltene aggregation was found to be at 1wt% DBSA. Based on the analysis of the precipitated asphaltene through FT-IR, XPS, SARA and UV-vis, this phenomenon can be explained as follows: DBSA below CMCDBSA (≧2500ppm) exists as a monomer or semi micelle in heptane at first and then the monomer of DBSA adsorbs on the asphaltene surface by acid-based interaction. After which, the long tail of DBSA promotes asphaltene precipitation up to the maximum removal rate. Over 1wt% of DBSA, the increase of semi micelle of DBSA adsorbed on asphaltene-resin surface by hydrophobic interaction makes it loosely so that asphaltene removal ratio decreased. |
| 저자 |
Liu Lingyu1, 고강석2, 김광호2, 이영우3, 노남선2
|
| 소속 |
1KIER, 2한국에너지기술(연), 3충남대 |
| 키워드 |
에너지전환 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
