| HY, HZSM-5 and MCM-41 molecular sieve were used as catalysts to conduct co-cracking test for preparation of bio-based fuel oil by adding 5% ethanol or acetone in waste cooking oil, and the quality indexes and components of the liquid products were determined and analyzed by GC-MS, respectively. The results showed that under HY and MCM-41 catalytic conditions, the cracking reaction optimization effect after adding alcohol or ketone was obvious, the density, acid value, saponification value of the liquid products and coking rate of catalyst were reduced, the yield was increased, and the gas production was reduced, while under HZSM-5 catalytic conditions, the optimization effect was not obvious. GC-MS analysis result of the liquid products showed that the alkane content increased to 2493% after the addition of ethanol, the aromatic hydrocarbon content increased to 70.27% and the oxygen-containing compound content decreased to 2.38% after the addition of acetone. The research showed that the addition of alcohol or ketone could improve the product quality of bio-based fuel oil in different degrees and had a strong selectivity to the composition of bio-based fuel oil. |
