煤粉加压气化炉对流段换热特性试验  

Study on heat transfer characteristics in a gasification convective syngas cooler

作　　者：杨震[1,2] 赵振兴[1] 郭琴琴[2] 刘宏[1] 曹子栋[1] 

机构地区：[1]西安交通大学能源与动力工程学院,陕西西安710049 [2]上海锅炉厂有限公司,上海200245

出　　处：《重庆大学学报（自然科学版）》2011年第10期82-85,102,共5页Journal of Chongqing University

基　　金：国家863高技术基金资助项目(2007AA05Z265)

摘　　要：研究了煤粉加压气化炉膜式螺旋管对流换热器在高温高压工况下的换热特性。分别以N2、He、N2和He体积比为2∶1的混合气体为试验气体,试验时对每一种气体压力均从0.5MPa开始进行,至3.5MPa结束,在每一个压力值下,试验段入口温度从150℃升到450℃。通过试验研究了压力对雷诺数及换热系数的影响和不同的冲刷形式下的膜式螺旋管的换热特性。结果表明:压力影响该管型的换热能力;获得了不同工作条件下该管型的换热拟合式。This study uses high pressure single gas（He and N2） and mixture（He ＋ N2） gas instead of the high pressure syngas,and the test pressure for each gas were from 0.5 MPa to 3 MPa with test temperature from 150 ℃ to 450 ℃.The results show that the working pressure,gas composition and flow heating methods influence the high pressure gas convective heat transfer coefficient,and the effect of the working pressure is the most prominent.The average convection heat transfer coefficients are obtained for different kinds of high pressure gas in annular channel heat exchanger,and the correlations of the typical flow heating methods and its applicable condition.

关 键 词：IGCC 对流煤气冷却器 换热特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]