A comprehensive analysis of the factors of influencing the yield of crude benzene of coke making enterprises were provided. Main influencing factors, such as the benzene washing temperature, the washing oil quality, the superheated steam, the temperature of rich-oil, the temperature of the crude benzene, etc. were analyzed and summarized in detail.The conclusion was drawn that the efficiency of benzene washing was increased with the increase of the temperature of gas into the tower when the optimal temperature of gas was 20 ℃ to 25 ℃; the measures ensuring the washing oil quality were controlling the count and the temperature of slag discharge of the regenerator,the best deslagging way was 3 times per week and the temperature was 190 ℃; when the temperature of the top of distillation tower was 94 ℃ to 96 ℃, the temperature of steam was above 340 ℃, the temperature of rich-oil during 180 ℃ to 190 ℃ and the temperature of crude benzene after refrigeration was during 25 ℃ to 30 ℃, the yield of crude benzene was the best.
