摘要
目的浸没燃烧式气化器(submerged combustion vaporizer,SCV)是液化天然气(liquefied natural gas,LNG)产业链中的核心换热设备,通过优化SCV的性能构型和运行参数,探究其运行特性。方法采用数值模拟的方法,系统地对比了顺排/错排蛇形管与单孔/双孔/三孔烟气分布器共6种构型的传热性能,研究错排双孔构型下LNG入口参数与烟气参数对传热特性的影响规律。结果错排双孔构型SCV的综合传热性能最优,当LNG入口流量、LNG入口压力、烟气表观速度和烟气入口温度上升时,SCV的总体传热性能均呈现上升趋势。结论通过改变蛇形管错排布局与双孔烟气分布器的协同设计,强化了SCV的气液两相换热过程,为SCV的国产化设计提供了结构优化与参数调控的双重参考。
Objective The submerged combustion vaporizer(SCV)is the core heat transfer equipment in the liquefied natural gas(LNG)industry chain.By optimizing performance configuration and operating parameters of SCV,its operating characteristics are studied.Method By using means of numerical simulation,this paper systematically compared the six configurations including systematic/staggered arrangement serpentine tubes and single-hole/double-hole/three-hole flue gas distributors,and studied the impact rule on heat transfer characteristics of inlet parameters of LNG in a staggered arrangement double-hole configuration and fuel gas parameter.Result It was found that the SCV with a staggered arrangement double-hole configuration had the best heat transfer performance.The results showed that the overall heat transfer performance of SCV increased with the increase of LNG inlet flow rate,LNG inlet pressure,flue gas apparent velocity and double-hole flue gas inlet temperature.Conclusion The gas-liquid two phase heat transfer process of SCV can be effectively improved by changing the serpentine tube and flue gas distribution outlet configurations.The research results may provide dual references for the optimal structures and reasonable operating control of domesticating ScV.
作者
李昊
郭新锋
王滋樟
王天任
彭善碧
陈鸿伟
宋杨凡
LI Hao;GUO Xinfeng;WANG Zizhang;WANG Tianren;PENG Shanbi;CHEN Hongwei;SONG Yangfan(Sinopec Xinxing Petroleum Co.,Ltd.,Beijing,China;Sinopec Key Laboratory of Geothermal Resources Exploitation and Utilization,Beijing,China;School of Civil Engineering and Geomatics,Southwest Petroleum University,Chengdu,Sichuan,China;Department of Power Engineering,North China Electric Power University,Baoding,Hebei,China)
出处
《石油与天然气化工》
北大核心
2025年第6期38-47,共10页
Chemical engineering of oil & gas
基金
北京市自然科学基金青年项目“脉动连续多相流化床相间作用机理及基于深度学习图像分析的流场预测”(3214056)
中央高校基本科研业务费专项资金面上项目“周期性液速多相流动流场预测及相间作用机理”(2020MS102)。
关键词
液化天然气
浸没燃烧式气化器
数值模拟
传热特性
结构优化
liquefied natural gas(LNG)
submerged combustion vaporizer(SCV)
numerical simulation
heat transfer characteristic
structure optimazation
