The current situation of co-pyrolysis of oily sludge was summarized,including co-pyrolysis with biomass,coal,household waste,etc.By summarizing the influencing factors of co-pyrolysis and the appli-cation status of co-pyrolysis residue,it was clarified that the synergistic mechanism of co-pyrolysis of oily sludge with different additives in the process of co-pyrolysis and the application of co-pyrolysis residue were the key research directions in the future.In order to provide a reasonable and feasible path for the development of oily sludge co-pyrolysis technology and the resource utilization of co-pyrolysis residue.
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