Abstract: The delayed coking reactions of Liaohe heavy oil was simulated in an autoclave reactor at 395 ℃，405 ℃, 415 ℃，460 ℃ and 500 ℃, respectively, with addition of different anticoking and increasing liquid yield boosters. With the best booster selected from above tests, the coking products gas, distillates and SARA of residue were analyzed. It is found that the addition of 0.5% booster I can reduce coke and methane in gas 0.78 percentage points and 14.96 percentage points, respectively. The yield of gasoline + diesel increases 3.0-4.5 percentage points，the amount of saturate+aromatics increases 1.86-2.38 percentage points, indicating the good functions of booster for anticoking and increasing liquid yield.

Key words: Liaohe heavy oil, delayed coking, coking rate, anticoking and increasing liquid yield booster, resin, asphaltene