Recent developments in utilization of oil sludge pyrolysis residue

Pyrolysis of OS would produce a large amount of solid residue. The disposal of pyrolysis residue was an indispensible part for OS recycling. But little attention was paid on the utilization of OS pyrolysis residue. To inspire more attention on OS pyrolysis residue, the characteristics were introduced and recent developments in disposal and utilization of pyrolysis residue were summarized in three aspects as carbon-based materials, catalysts, and fuel. In view of the research work carried out, proposals were given for future work. We believed this review would help to inspire more research into resourceful utilization of OS pyrolysis residue.