Abstract:lyzed in HYLZ-2 aluminum retort low-temperature dry distillation furnace. The effects of pyrolysismode,temperature and time on desulfurization were analyzed. The kinetic parameters of constant tem⁃perature rising stage and constant temperature stage were studied. The results show that 20% of sulfur isremoved from solid coal when the temperature rises from 20 ℃ to 245 ℃ at a constant speed of 5 ℃ /min. After isothermal pyrolysis for 320 minutes at 460~510 ℃,60%~64% of sulfur still remains in thesolid coal char. In the constant temperature rising stage,the average desulfurization activation energyand the average desulfurization pre-exponential factor are 30.23 kJ/mol and 35.51,respectively. Theactivation energy and the natural logarithm of desulphurization pre-exponential factor in the constanttemperature stage are 196.72 kJ/mol and 25.689,respectively. Close-