炉内喷钙脱硫对锅炉热效率的影响  

INFLUENCE OF LIMESTONE INJECTION IN FURNACE ON THERMAL EFFICIENCY OF BOILER

作　　者：段建中[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《工程热物理学报》2003年第6期984-987,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究规划(973)资助项目(No.G1999022308)

摘　　要：根据炉内喷钙脱硫的化学反应过程,经过化学分析和数学推导,得出了锅炉采用炉内喷钙脱硫后化学反应热、飞灰量和烟气量的增加对锅炉热效率影响的计算公式。采用三种试样的试验结果,定量分析了煤的含硫量不同时,随着钙硫摩尔比的变化喷钙脱硫引起的热损失的变化。结果表明,化学反应热损失大于飞灰和烟气量增加造成的热损失,当煤的含硫量为3.46％时,可使锅炉热效率降低1％左右。Based on the chemical and mathematic analysis of the chemical reacting process of the limestone and injection in the furnace, the equation is obtained to calculate the influence of the chemical reaction heat and increment of fly ash and flue gas on the thermal efficiency of boiler. In an addition, using the experimental results of three simples, the heat loss due to the different Moore ration of calcium and sulfur is quantitatively analyzed with different sulfur content in coal. The results show that the heat loss due to chemical reaction is more than that due to increment of fly ash and flue gas. And the thermal efficiency will decrease 1% if the sulfur content in coal is 3.46%.

关 键 词：锅炉 脱硫 热效率 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]