王志浩,赵星海,辛国华,孙文,王宇楠

• 1:东北电力大学能源与动力工程学院
• 2:吉林工业职业技术学院
• 3:华能营口电厂
• 4:大连理工大学化工机械学院

摘要(Abstract)：

采用Fluent软件对富氧气氛下煤粉锅炉等离子冷风直接点火技术的点火特性进行了数值模拟。计算结果表明:该点火技术在一定的氧气浓度和煤粉浓度下能够实现煤粉气流的点火,对煤质也有很好的适应性;通过富氧冷风气氛与空气温风气氛下燃烧器点火情况的比较,及对不同氧浓度下等离子冷风点火特性的研究,证实了富氧的加入加快了煤粉燃烧速度,煤粉燃烧生成的CO量更小,火焰温度更高,提高了点火期间煤粉燃烧效率,有利于降低等离子的能量输入;氧气浓度的增加对提高等离子冷风点火性能存在最佳值,对于晋北烟煤当氧气浓度超过35%后,氧气浓度的增加对燃烧器点火效果的影响不大。

关键词(KeyWords)： 煤粉锅炉;等离子;富氧;点火;氧气浓度;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 东北电力大学“创新基金”项目

作者(Author): 王志浩,赵星海,辛国华,孙文,王宇楠

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