Abstract: The analysis of Yulin raw coal quality show that it’s high-quality coal with low moisture,ash and sulphur,high volatile,medium-high calorific value,which is suitable for low-temperature carbonization.First crush the Yulin raw coal,then analyse the influence of heating temperature and method,segmentation methods,raw coal particle size on dry distillation.Determine the suitable condition of carbonization process for Yulin coal.The results show that Yulin coal has higher strength,which help to improve utilization rate.When the carbonization temperature reaches 600 ℃,the tar yield reaches up to above 9.0 percent.The tar yield gotten by inner-heating technology is 0.7 percent higher than outer-heating method.The inner-heating technology has high heating efficiency,uniform heating and the like.To ensure the yield and quality of product,contrast one,two,three sections of the furnace,find that the three-stage furnace staging process is more suitable for Yulin coal carbonization.The optimum coal particle size for dry distillation ranges from 5 mm to 50 mm.Analyse the characteristics of coal tar and semi-coke,find that coal tar should be the main product in the carbonization process.