燃料化学学报2018，Vol.46Issue(2)：145-151,7.
高硫石油焦燃烧过程中不同赋存形态钒的变迁行为研究
Migration and transformation behaviors of vanadium (V) with different occurrence modes during combustion of high sulfur petroleum coke
摘要
Abstract
The occurrence modes and migration behavior of vanadium were investigated by sequential chemical extraction combined with ICP-OES during combustion of high-sulfur petroleum coke.The chemical reaction mechanism was discussed based on thermodynamic analysis.The vanadium in raw petroleum coke is mainly associated with organic matter and stable forms.With increasing temperature organic V disappear and the released vanadium could react with minerals such as Ca,K,Na,Fe to form different vanadium species including water soluble and ion exchange state,carbonates and Fe-Mn oxides.Steady-state vanadium is mainly combined with other minerals to form amorphous substance existing in petroleum coke.These amorphous substances might transform and release vanadium species at high combustion temperatures.The V volatility is correlated with temperature and burn out rate.The volatility may sharply rise because organic matter decomposed and released gaseous VO2 above 1100 ℃.关键词
石油焦/燃烧/重金属钒/赋存形态/迁移转化Key words
petroleum coke/combustion/vanadium/occurrence mode/migration behavior分类
能源科技引用本文复制引用
熊青安,李家州,李春玉,郭帅,赵建涛,房倚天..高硫石油焦燃烧过程中不同赋存形态钒的变迁行为研究[J].燃料化学学报,2018,46(2):145-151,7.基金项目
The project was supported by the National Natural Science Foundation of China (21576276,21506241) and Strategic Priority Research Program of the Chinese Academy of Sciences(XDA07050100).国家自然科学基金(21576276,21506241)和中国科学院战略性先导科技专项(XDA07050100)资助 （21576276,21506241）
