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为防止粉煤气化炉水冷壁烧损选用合适煤质,在大规模工业运行的GSP气化装置上提供不同煤质获得水冷壁运行结果.对不同煤质工业分析、煤灰组成、熔融性及煤灰黏温特性等进行了研究.结果表明,当灰分控制在12％～20％、水分在4％～6％、灰熔点不低于1 151℃、流动温度和软化温度差值不低于32℃、黏度25 Pa·s对应温度l 400℃时,可防止水冷壁烧损.“,”In order to choose appropriate coal to prevent the water-cooled wall in coal gasifier from burnout,different types of coal are fed to the lager-scale commercially operated GSP gasifier for gaining the operation results of watercooled wall.Proximate analysis for various types of coal is carried out,and the chemical composition,fusibility and viscosity-temperature characters of the coal ash generated by corresponding coal type are investigated.The results show that the water-cooled wall can be prevented from burnout when the coal used has the following conditions:ash content in the range of 12％-20％,the moisture content in the range of 4％-6％,the fusion temperature point not less than 1 151 ℃,the temperature difference between flow temperature and softening temperature not less than 32℃,the viscosity at 25 Pa·s at 1 400℃.