化工学报2011，Vol.62Issue(1)：179-185,7.
基于赤铁矿载氧体的煤化学链燃烧试验
Experiments on chemical looping combustion of coal with hematite as oxygen carrier
摘要
Abstract
Chemical looping combustion is a promising technology for the combustion of fuel with inherent separation of CO2. The experiments on chemical looping combustion of coal were performed in a 1 kWth interconnected fluidized bed reactor using a natural Australian hematite as oxygen carrier. The effects of fuel reactor temperature on the gas compositions from both fuel and air reactors were discussed. A comparison of the effects of several factors on coal gasification efficiency, carbon capture efficiency and gasification products conversion efficiency was carried out and the gaseous sulfur compounds released in the system were analyzed. The results indicated that with increasing fuel reactor temperature from 900℃ to 985℃ there was a gradual increase of CO volumetric fraction but a gradual decrease of CO2 volumetric fraction in the fuel reactor, and CO2 concentration in the air reactor dropped linearly correspondingly. A higher fuel reactor temperature would contribute to significantly increasing coal gasification efficiency and carbon capture efficiency. An increase in the mass of oxygen carrier and coal, the main factors, would cause the gasification conversion increase and decrease respectively. Sulfur was released primarily as SO2 in the fuel reactor, and SO2 concentration increased from 515 × 10-6 to 562× 10-6 due to a change in fuel reactor temperature from 900℃ to 985℃.关键词
串行流化床/煤/化学链燃烧/载氧体/铁矿石Key words
interconnected fluidized bed/ coal/ chemical looping combustion/ oxygen carrier/ hematite分类
化学化工引用本文复制引用
顾海明,沈来宏,吴家桦,肖军,张思文..基于赤铁矿载氧体的煤化学链燃烧试验[J].化工学报,2011,62(1):179-185,7.基金项目
国家自然科学基金项目(50976023). （50976023）
