天然气锅炉烟气余热回收技术及应用研究

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	英文篇名：Gas waste heat recovery technology and application research of natural gas boiler 作者：胡杰锋 英文作者：HU Jie-feng; 关键词：天然气锅炉 ; 烟气余热回收 ; 露点温度 ; 热效率 英文关键词：natural gas boiler;;waste heat recovery of flue gas;;dew point temperature;;thermal efficiency 中文刊名：JNJN 英文刊名：Energy Conservation 机构：太原理工大学; 出版日期：2018-04-25 出版单位：节能 年：2018 期：v.37;No.427 语种：中文; 页：JNJN201804018 页数：3 CN：04 ISSN：21-1115/TK 分类号：64-66

摘要

天然气锅炉烟气余热回收能够显著提高锅炉的热效率,节省能源降低排放。对天然气锅炉的烟气进行了分析并对不同烟气排放温度的热效率进行了计算,指出烟气的露点温度会随着过量空气系数的增大而降低;烟气排放温度在60℃以下时热效率增长迅速。对常见的冷凝式和热管式天然气锅炉烟气余热回收技术进行了研究,并分析了其优缺点。
        The recovery of waste heat from gas in natural gas boiler can significantly improve the thermal efficiency of the boiler and save energy and reduce the emission. In this paper, the flue gas of natural gas boiler is analyzed,and the thermal efficiency of different flue gas discharge temperatures is calculated. It is pointed out that the dew point temperature of flue gas will decrease with the increase of excess air coefficient, and the thermal efficiency will increase rapidly when the flue gas emission temperature is below 60 ℃. The waste heat recovery technology of common condensing and heat pipe type natural gas boiler is studied and its advantages and disadvantages are analyzed.

引文

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