【摘要】 以Shell煤气化工艺为基础,利用干煤粉加压气流床气化过程模拟模型,对干煤粉加压气流床气化工艺的性能进行了数学模拟和性能研究.分析了煤气化过程中氧气和蒸汽对气化炉性能的影响,为整体煤气化联合循环(IGCC)电站系统设计中气化工艺及参数的选择提供了依据.研究表明,氧气煤比和蒸汽煤比是影响气化炉出口煤气成分、碳转化率和其他性能的主要因素,气化炉温度随着氧气煤比的增加而增加,随着蒸汽煤比的增加而下降;当蒸汽煤比一定时,随着氧气煤比的变化,冷煤气效率有一个最佳值,氧气煤比要比蒸汽煤比对气化炉性能的影响更为显著.更多还原

【Abstract】 Based on Shell gasification technology, mathematical simulation and performance study of dry feed entrained flow bed gasifier technology are carried out. The effects of oxygen and steam in gasification process on gasifier performance are analyzed and so that the foundation of selecting gasification technology and parameters are provided for the design of integrated gasification combined cycle (IGCC) power system. The results show that the ratio of oxygen to coal is the main factor affecting coal gas composition at exit of gasifier, conversion rate of carbon and other performance. The gasifier temperature is increased with the ratio of oxygen to coal, but decreased with the ratio of steam to coal. For the constant ratio of steam to coal, there is an optimal efficiency when the ratio of oxygen to coal is varied . The results aslo show that the effects of the ratio of oxygen to coal on gasifier performance are stronger than the ratio of steam to coal.更多还原