Co-pyrolysis characteristics of vacuum residue and bio-oil

抄録

Reprocessing vacuum residue into shorter hydrocarbon products is an indispensable way to obtain fuels and chemicals due to the limitation of nonrenewable crude oil. However, the world energy transition to a zero-emission system in 2050 requires mainly renewable sources. The emergence of this transition is not easy due to the rate of technological turnover from design, experiments to industrial-scale production. Therefore, partial solutions such as process modifications by introducing bio-oil as renewable materials into an existing VR processing plan by a co-pyrolysis process can be a prospective option. This research aims to identify the synergetic effect of the VR_bio-oil co-pyrolysis. In this study, VR, distilled tall oil 2% and 10% rosin was pyrolyzed and co-pyrolyzed in a thermogravimetry analyzer. Then the study was conducted in a batch pyrolysis reactor at 470°C with a heating rate of 5°C/min and held for 5 hours. The study of VR_bio-oil co-pyrolysis in the TGA has no clear sign of the synergistic effect. Further investigation into the VR-bio-oil slow pyrolysis in the batch reactor reveals the synergistic effect on the VR-FA1 mixture by escalating gas and oil yield while alleviating the char yield. However, the synergistic effect did not clearly occur in the VR-FA3S co-pyrolysis.