崔永安,高杰,徐樑,乔晓磊,金燕

• 1:太原理工大学电气与动力工程学院

摘要(Abstract)：

使用涡耗散模型,对某600 MW机组锅炉掺烧矿井乏风后的燃烧特性进行了数值模拟,研究了乏风体积分数对锅炉燃烧特性及NO_x生成特性的影响。结果表明:随着乏风体积分数的上升,主燃烧器区域内炉膛平均温度降低幅度最高为30 K,降低幅度并不明显,主燃烧器区域上层平均温度先上升后降低;在整体上炉膛截面氧体积分数随着甲烷体积分数的上升而降低,一氧化碳体积分数随着甲烷体积分数升高而升高;掺烧矿井乏风后,CDEF层燃烧器区域内NO_x质量浓度随着甲烷体积分数上升而上升,AB层燃烧器区域上层炉膛截面NO_x质量浓度随着甲烷体积分数上升而降低,降低幅度最多为253.21 mg/m~3;掺烧甲烷体积分数为1.5%的矿井乏风后,炉膛出口处NO_x质量浓度从569.64 mg/m~3降至519.24 mg/m~3,降低幅度为8.85%。说明锅炉掺烧矿井乏风不仅能够节约资源和保护环境,还有助于降低NO_x的排放。

关键词(KeyWords)： 锅炉;矿井乏风;掺烧;燃烧特性;NOx排放;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(u1510129)~~

作者(Author): 崔永安,高杰,徐樑,乔晓磊,金燕

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