| 煤层气燃烧器流动及NO_x生成特性数值研究 |
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| 引用本文： | 张力,张俊广,唐强,孙志伟.煤层气燃烧器流动及NO_x生成特性数值研究[J].煤炭转化,2011,34(3). |
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| 作者姓名： | 张力 张俊广 唐强 孙志伟 |
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| 作者单位： | 低品位能源利用技术及系统教育部重点实验室,重庆大学,400030重庆 |
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| 基金项目： | 重庆市重点基金资助项目(2009BA6067) |
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| 摘 要： | 针对煤层气热值低的特点,设计了一台煤层气旋流燃烧器,采用数值模拟方法研究了不同热负荷及过量空气系数对燃烧性能的影响,并计算了燃烧污染物的生成.结果表明,在燃烧区域存在逆压梯度,加强了烟气的扰动,有利于形成稳定的高温区,提高燃烧效率.燃烧器负荷调节范围大,低负荷时仍能保持较高的燃烧温度和燃烧效率.过量空气系数为1.05时燃烧温度最高,此时NOx生成最多,仅为25.1 mg/m3.
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| 关 键 词： | 低热值煤层气 旋流燃烧器 数值模拟 NOx |
NUMERICAL STUDY OF FLOW FIELD AND NO_x FORMATION CHARACTERISTICS OF BURNER FOR COAL-BED METHANE |
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| Zhang Li,Zhang Junguang,Tang Qiang,Sun Zhiwei.NUMERICAL STUDY OF FLOW FIELD AND NO_x FORMATION CHARACTERISTICS OF BURNER FOR COAL-BED METHANE[J].Coal Conversion,2011,34(3). |
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| Authors: | Zhang Li Zhang Junguang Tang Qiang Sun Zhiwei |
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| Affiliation: | Zhang Li Zhang Junguang Tang Qiang and Sun Zhiwei(Key Laboratory of Low-grade Energy Utilization Technologies and Systems Ministry of Education,Chongqing University,400030 Chongqing) |
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| Abstract: | A swirled burner is designed for burning low heat value of coal-bed methane.The influence of heat load and excess air coefficient on combustion performance is studied by numerical simulation,and combustion pollutant is calculated.Results show that counter pressure gradient is existed in the burning zone,and its existing can strengthen the flue gas disturbance,generate a high temperature zone and increase the combustion efficiency.The designed burner has a wide range of load adjusting.High combustion tempera... |
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| Keywords: | low calorific value coal-bed methane swirled burner numerical simulation NOx |
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