掺烧醇基燃料对天然气预混燃烧特性的影响  

Influence of Co-firing Alcohol-based Fuel on Combustion Characteristic of a Natural Gas Premixed Combustor

作　　者：刘志坦 邵卫卫[2,3] 李玉刚 赵岩[2,3] 王凯 肖云汉[2,3] 

机构地区：[1]国电科学技术研究院,南京210033 [2]中国科学院能源动力研究中心,江苏连云港222069 [3]中国科学院先进能源动力重点实验室(工程热物理研究所),北京100190

出　　处：《燃气轮机技术》2015年第3期31-37,共7页Gas Turbine Technology

摘　　要：以甲醇为主的醇基燃料作为一种清洁能源,具有运输方便、NOx排放低等特点,具备成为天然气补充、替代能源的可能。针对醇基燃料作为替代燃料应用于天然气燃气轮机机组的潜在需求,开展了天然气预混火焰掺烧醇基燃料的实验研究。基于天然气贫预混模型燃烧器,采用醇基燃料汽化后再燃烧的方式,开展了醇基燃料掺烧负荷比例对天然气预混燃烧特性的影响研究,从火焰结构、火焰稳定性、火焰温度和CO/NOx排放等燃烧特性进行了对比研究。结果表明,相对于天然气预混燃烧,保持空气量和负荷不变,掺烧醇基燃料后火焰结构、火焰稳定性和CO排放等均影响不大,且能获得更低的NOx排放。Alcohol-based Fuel,as a liquid fuel mainly by methanol,has advantages for convenient transportation and low NOxemission,could be made possible for supplemental and substitute energy. For potential requirements of the alcohol-based fuel applied in gas turbine systems fueled with natural gas,experimental study of co-firing the alcohol-based fuel in a natural gas premixed model combustor was conducted. The alcohol-based fuel was vaporized and mixing with natural gas. Influence investigations of co-firing heat load ratio of alcohol-based fuel on combustion characteristics were developed,including flame structure,flame stability,flame temperature and CO / NOxemissions. Air flux and total heat load of the premixed flame were maintained. Results indicated,compared with natural gas premixed combustion,lower NOxemission was obtained,while other flame characteristics such as flame structure,flame stability,flame temperature and CO emission show little change.

关 键 词：预混燃烧 醇基燃料 天然气 掺烧 NOX排放 

分 类 号：V231.25[航空宇航科学与技术—航空宇航推进理论与工程]