水碳比对化学回热循环回热效率影响分析  

Analysis of influence of molar steam-to-carbon ratio on recuperated efficiency of chemical recuperation cycling

作　　者：徐长松[1] 郑洪涛[1] 谭智勇[1] 杨家龙[1] 

机构地区：[1]哈尔滨工程大学动力与能源工程学院,哈尔滨150001

出　　处：《哈尔滨商业大学学报（自然科学版）》2010年第5期600-603,共4页Journal of Harbin University of Commerce：Natural Sciences Edition

摘　　要：从燃料热值增加角度讨论了燃气轮机化学回热循环的回热效率,推导出回热效率求解方法及确定影响效率的相关因素.通过理论计算,分析了燃料蒸汽转化反应中水碳比选取对回热效率的影响.计算结果表明:水碳比对回热效率的影响与转化反应温度、压力相关;一定温度、压力下存在最佳水碳比;最佳水碳比不随转化反应压力变化,随转化反应温度升高而下降.The recuperated efficiency of gas turbine chemical recuperation cycling is discussed from the point of increasing fuel calorific value.The solution to the thermal efficiency is derived and the relevant factors effecting on efficiency is identified.Through theoretical calculations,the impact of molar steam-to-carbon ratio on recuperated efficiency is analyzed in fuel steam reforming reaction.The results show that the effect of molar steam-to-carbon ratio on recuperated efficiency is associated with the reforming reaction temperature and pressures.A optimal molar steam-to-carbon ratio exists at certain temperature and pressure in steam reforming reaction.The optimal molar steam-to-carbon ratio does not change with the reforming reaction pressure and decreases with the reforming reaction temperature rising.

关 键 词：水碳比 化学回热 燃气轮机 回热效率 蒸汽转化 

分 类 号：TK472[动力工程及工程热物理—动力机械及工程]