气态烃非催化部分氧化烧嘴端面传热过程研究  

Heat Transfer of Burner Rim in Gas Hydrocarbon Non-catalytic Partial Oxidation Process

作　　者：杨曹立 高瑞 代正华[1] 梁钦锋[1] 王辅臣[1] YANG Caoli;GAO Rui;DAI Zhenghua;LIANG Qinfeng;WANG Fucheng(Shanghai Engineering Research Center of Coal Gasification,School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学资源与环境工程学院,上海市煤气化工程技术研究中心,上海200237

出　　处：《华东理工大学学报（自然科学版）》2021年第1期11-16,共6页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(21776087);新疆生产建设兵团南疆重点产业创新发展支撑计划(2019DB002)。

摘　　要：针对气态烃非催化部分氧化烧嘴端面传热情况进行了数值模拟,揭示了烧嘴流道组织对转化炉内燃烧情况和烧嘴端面热负荷的影响。结果表明:三通道烧嘴将CO_(2)通道添加在O_(2)与CH_(4)通道之间时,增加了高温区与烧嘴端面之间的距离,减少了外侧端面受到的传热量;双通道烧嘴利用CO_(2)稀释O_(2)的方式降低反应强度,减少了辐射传热量,从而降低了烧嘴外侧端面温度,改善了外侧端面热应力分布。采用双通道形式的烧嘴在端面温度及热应力分布方面更具优势。This paper analyzed the heat transfer process of the burner rim during the process of non-catalytic partial oxidation of gas hydrocarbon by means of numerical simulation.The influences of the nozzle channel configuration on the combustion process in the partial oxidation reformer and the heat transfer process of burner rim were investigated.The results showed that the three-channel burner,which makes the inner channel flow oxygen,the middle channel flow carbon dioxide and the outer channel flow gas hydrocarbon,can increase the distance between the high temperature region and burner rim.Therefore,the three-channel burner could reduce the heat transfer of the burner rim.As a result,the three-channel burner led to a decrease in the temperature of the outer rim surface.The two-channel burner uses carbon dioxide to dilute oxygen by means of making the inner channel flow both carbon dioxide and oxygen.The method of diluting oxygen by carbon dioxide in the partial oxidation burner could reduce the intensity of the combustion,which made the combustion temperature in the furnace lower,especially near the burner rim.The lower combustion temperature could reduce the amount of radiation heat transfer in the two-channel burner rim.Therefore,the temperature of each burner rim in the two-channel burner was lower than that in the three-channel burner.Meanwhile,the two-channel burner could also improve the thermal stress distribution of the burner rim.The two-channel burner had more advantages in burner rim temperature and thermal stress distribution compared with the three-channel burner.

关 键 词：气态烃非催化部分氧化 烧嘴 端面温度 热应力 

分 类 号：TE646[石油与天然气工程—油气加工工程]