准东煤燃烧过程中碱金属释放光谱检测研究  

Spectroscopic investigation on temporal release of alkali metals from combustion of Zhundong coal

作　　者：汪淑军 任学军 高国栋 赵勇纲 白杨 蒲旸 姚斌[3] 娄春[3] WANG Shujun;REN Xuejun;GAO Guodong;ZHAO Yonggang;BAI Yang;PU Yang;YAO Bin;LOU Chun(Shenhua Shendong Power Xinjiang Zhundong Wucaiwan Power Generation Co.,Ltd.,Changji 831700,China;Technology Research Institute of Shenhua Guoshen Group,Xi’an 710075,China;State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]神华神东电力新疆准东五彩湾发电有限公司,新疆昌吉831700 [2]神华国神集团技术研究院,陕西西安710075 [3]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《热力发电》2021年第6期141-144,共4页Thermal Power Generation

基　　金：国家科技支撑计划项目(2015BAA04B02)。

摘　　要：为研究准东煤在燃烧过程中碱金属的迁移及释放规律,基于火焰自发射光谱原理,搭建一套乙烯平面火焰检测台架,利用光谱仪对五彩湾煤进行燃烧实验研究。测量结果表明:煤颗粒的火焰与形态的变化,与碱金属的释放阶段具有一定的对应关系;光谱仪可以同时测量温度和碱金属的释放,碱金属的释放分为挥发分、焦炭和灰分3个阶段;挥发分和焦炭阶段持续时间较短,但碱金属释放量在50%左右。In order to study the migration and release rules of alkali metals during the combustion of Zhundong coal,a set of flat flame detection platform,with the fuel of ethylene,was constructed based on the principle of flame self-emission spectrum.Moreover,the spectrometer was used for the combustion experiments of Wucaiwan coal.The results show that,the change of flame and morphology of coal particles has a certain correspondence with the release stages of alkali metals.The temperature and alkali metal release can be measured simultaneously.The release process of alkali metals can be divided into three stages:the volatile phase,the coke phase and the ash phase.The volatile phase and the coke phase both have a short duration,while the release rate of alkali metals is about 50%.

关 键 词：准东煤 碱金属 自发射光谱 温度 热辐射 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]