HTW加压流化床煤气化模拟
Power Generation Technology(2018)
Abstract
为深入了解高温温克勒(high-temperature Winkler,HTW)加压流化床煤气化过程,采用Aspen Plus构建相应模型,以氧煤比和蒸汽煤比为变量,对HTW加压流化床气化炉的气化气成分、热值、气体产率和冷煤气效率进行了模拟.模拟结果表明,随着氧煤比的增加,出口温度升高,CO含量增加,H2含量先增加然后略有减小,CO2和CH4的含量降低,气体产率增加,气体热值下降,冷煤气效率下降.HTW加压流化床气化炉的常见运行温度为1050℃,在此工况下的氧煤比大约为0.71,而水蒸气煤比对HTW加压流化床气化炉的运行性能影响较小.模拟结果对HTW加压流化床煤气化技术的深入研究与实际设计具有指导意义.
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