油页岩流化床燃烧N_2O排放特性的试验研究  

TEST STUDY ON CHARACTERS OF N_2O EMISSION FROM FLUIDIZED BED COMBUSTION OF OIL SHALE

作　　者：于海龙[1] 王哲 董向元[1] 姜秀民[3] 李小民[1] 孙昆峰[1] 

机构地区：[1]中原工学院能源与环境学院,河南郑州450007 [2]河南省电力勘测设计院,河南郑州450007 [3]上海交通大学机械与动力工程学院,上海200240

出　　处：《热力发电》2009年第9期24-28,共5页Thermal Power Generation

基　　金：国家自然科学基金资助项目(50476021)

摘　　要：分析了流化床燃烧过程中N2O的生成与分解机理。为了验证N2O的生成与分解过程及其排放的主要影响因素,在小型热态流化床实验台上进行了油页岩燃烧N2O的排放特性试验,分别对过量空气系数、二次风率、循环倍率、床温等因素对N2O排放的影响规律进行了研究。试验结果表明:降低过量空气系数和二次风率以及提高循环倍率可以有效降低N2O的排放量;在床温为850℃左右时N2O排放量最高,当提高和降低床温时NO排放量均能得到有效控制。The mechanism of generation and decomposition concerning N2O emission from fluidized bed combustion of oil shale has been analysed. In order to verify the process of generation and decomposition of N2O emission,as well as the main factors affecting the N2O emission,a test study on N2O emission characters of oil shale combustion has been carried out on a small - sized hot - state fluidized bed combustion test stand, the regularity concerning influence of excess air ratio, secondary air rate, circulation coefficient and bed temperature etc. upon the N2O emission has been studied respectively. The results show that the decrease of excess air ratio and secondary air rate, as well as the increase of circulation coefficient all can effectively reduce the N2O emission. In the event of bed temperature being about 850℃, the N2O emission is maximum,increasing or decreasing the bed temperature all can effectively control the N2O emission.

关 键 词：流化床 油页岩 N2O排放 燃烧 床温 

分 类 号：TK224.11[动力工程及工程热物理—动力机械及工程]