The invention discloses an oily
sludge treatment system which comprises an anaerobic
distillation system and a condensation
separation system, the anaerobic
distillation system comprises a rotary cylinder and a shell surrounding the circumferential periphery of the rotary cylinder, a heating cavity is formed between the shell and the rotary cylinder, a
heating system is arranged on the heating cavity, oily
sludge is heated in the rotary cylinder to be subjected to anaerobic
distillation, distillation gas generated by anaerobic distillation is conveyed to a condensation
separation system to be subjected to condensation separation to obtain non-condensable gas, liquid oil and waste water, the non-condensable gas and the liquid oil serve as fuel to be supplied to the
heating system, and the non-condensable gas and
combustion-supporting gas pass through a
heat exchanger, are preheated by
smoke generated by
combustion and then are conveyed to the
heating system. Water and
petroleum hydrocarbons in the oily
sludge are distilled and separated in an
oxygen-free environment, substances only change physically and do not change chemically,
heating power consumption is low, non-condensable gas and liquid oil are recycled as fuel to be utilized, self-sufficiency is achieved, the operation cost is low, secondary
pollution is avoided, and harmless treatment is achieved.