浸没燃烧式LNG气化器工况对压力波动的影响  

Impact of Operation Condition of Immersion Combustion LNG Vaporizer on Pressure Fluctuation

作　　者：杨东升[1] 康凤立 刘燕[2] 史永征[1] 郭全[1] 

机构地区：[1]北京建筑大学北京市供热供燃气通风及空调工程重点实验室,北京100044 [2]北京市燃气集团有限责任公司,北京100035

出　　处：《煤气与热力》2017年第5期19-24,共6页Gas & Heat

基　　金：北京市科学技术委员会项目<城市燃气站运营安全与节能关键技术研发及应用>中子课题"高中压调压站冻堵;冻胀对安全运行影响分析及应对措施"(编号:D151100005515002)

摘　　要：浸没式燃烧器火焰不稳定的主要原因是燃烧室内不断地发生压力波动,且压力波动越大越不利于火焰的稳定。结合理论分析和实验测试,探讨浸没燃烧式LNG气化器运行工况与燃烧室压力波动的关系,进而分析对燃烧稳定性的影响。燃烧室压差(燃烧室压力与水静压值之差)基本不受浸没深度影响,主要影响因素是燃烧器燃烧功率;燃烧室压力相对波动幅度主要受燃烧器的燃烧功率和浸没深度影响;增大过剩空气系数,使得燃烧室压差增大;过剩空气系数对燃烧稳定性影响最大。The main reason for flame instability of submerged burner is frequent pressure fluctuation in the combustion chamber. The greater the pressure fluctuation is, the worse the flame stability is. Based on the theoretical analysis and experimental tests, the relationship between the operation conditions and the pressure fluctuation is discussed to analyze their impacts on the combustion stability. The pressure difference of the combustion chamber, namely the pressure difference between the combustion chamber pressure and water static pressure value is nearly not impacted by the immersion depth. The main impact factor is the burner power. The relative pressure fluctuation amplitude in the combustion chamber is mainly determined by the burner power and the immersion depth. The increase of excess air coefficient leads to the increase of the pressure difference of the combustion chamber. The excess air coefficient has the biggest impact on combustion stability.

关 键 词：浸没式燃烧器 浸没燃烧式LNG气化器 压力波动 火焰稳定性 实验研究 

分 类 号：TU996.6[建筑科学—供热、供燃气、通风及空调工程]