Abstract: The pyrolytic oils and gases were obtained from oil sludge pyrolysis process at different temperatures and then hydrotreated in pilot scale and scale-up test. The results of pyrolysis experiment show that the oil yield declines as the reaction temperature increases, the oil and gas yield reaches 38.61% and 6.52% at 600 ℃，respectively with small amount of S, N,CCR, metal and asphaltene in the oil. At the hydrotreating conditions of 420 ℃, 12.0 MPa, hydrogen to oil ratio of 800, and space velocity of 1.0 h-1 , the removal rate of sulfur and nitrogen reaches 94.5% and 89.4%, respectively, with high yield of light oil which can be used as a blending component for fuels, while the heavier fraction can be used as hydrocracking feedstocks.

Key words: oil sludge, pyrolysis, pyrolytic oil, hydrotreating