摘要
以2种贵州典型的高汞高硫煤为研究对象,对煤中汞和硫的含量及其赋存形态进行了研究。并利用水平管式炉试验台,在惰性气体气氛和微氧化性气氛下对煤样进行燃烧前温和热解试验,研究煤样在温和热解过程中汞的释放规律及其汞硫联合脱除特性。研究表明2种实验煤样在350～400℃温度下脱汞率最大分别达到89.5%和82.8%,煤中汞的释放率在热解15min左右达到极限值;同时还发现在微氧化性气氛下温和热解煤中硫铁矿硫的脱除效率有明显提高,而对煤中有机硫的脱除没有明显效果。
Two coal samples with high mercury and sulfur content from Guizhou province were selected in this study. The occurrences and contents of mercury and sulfur in these two types of coals were analyzed. The coal samples were then studied for mercury and sulfur releasing characteristics during mild thermal upgrading by using a horizontal tube furnace. The mercury removal efficiencies of these two types of coals reaches up to the top of 89.5% and 82.8% within the temperature range from 350-400℃, respectively. The removal of mercury reaches to the ultimate ratio when the coal is heated for more than 15min. A sharp increased removal of pyrite sulfur in coal under the low oxidizing atmosphere is also observed during mild thermal upgrading, but the removal of organic sulfur in coal is not obvious.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2009年第20期35-40,共6页
Proceedings of the CSEE
基金
国家自然科学基金项目(50721005)
国家杰出青年科学基金(50525619)~~
关键词
温和热解
脱硫
脱汞
微氧化性气氛
mild thermal upgarding
sulfur removal
mercury removal
low oxidizing atmosphere
