燃料化学学报Issue(9)：1038-1043,6.
氧化钙对胜利褐煤焦水蒸气气化反应性能及微结构的影响
Influence of calcium oxide on Shengli lignite char microstructure and steam gasification performance
摘要
Abstract
The Influence of calcium oxide on Shengli lignite char microstructure and steam gasification performance was studied. Demineralized coal samples were loaded with different content of calcium oxide and then pyrolyzed at 1 100℃. The char is gasified with steam in a micro fixed-bed reactor. The X-ray diffraction apparatus and Raman spectra apparatus were used to characterize the structure of coal char. The results show that the char with 5% calcium exhibits the highest gasification reactivity, while the catalysis for the steam gasification of char with 2% calcium is almost negligible. The results of XRD suggest that calcium can effectively hinder the carbon graphitization in the process of pyrolysis. The intensity of (002) and (100) peaks of char decreases with the rise of calcium loading. With the increase of calcium loading, the aromaticity fa is reduced from 66. 8% to 39. 9%. Raman spectra results show that ID/IG increases from 1. 363 to 1. 541 and IG/Ial reduces from 0. 423 to 0. 394 with the increase of calcium loading, respectively. It means that the decomposition of large polyaromatic ring structure in coal is greatly enhanced by the catalytic action of calcium, and the disordering degree and the structural defects of char increase with the increase of calcium loading.关键词
胜利褐煤焦/氧化钙/水蒸气气化/微结构/拉曼光谱Key words
Shengli lignite char/calcium oxide/steam gasification/microstructure/Raman spectra分类
化学化工引用本文复制引用
李阳,刘全生,刘洋,冯伟,赵斌,智科端,滕英跃,宋银敏,何润霞,周晨亮..氧化钙对胜利褐煤焦水蒸气气化反应性能及微结构的影响[J].燃料化学学报,2015,(9):1038-1043,6.基金项目
国家自然科学基金(21566029,21566028,21266017) （21566029,21566028,21266017）
高等学校博士学科点专项科研基金(20111514110001) （20111514110001）
内蒙古自治区重大基础研究开放课题 （）
内蒙古自然科学基金(2014MS0220,2015BS0206) （2014MS0220,2015BS0206）
内蒙古自治区研究生科研创新项目(B20141012809) （B20141012809）
内蒙古自治区科技创新引导奖励资金项目。 （）
