摘要
The high sulfur coal Hunan Meitanba was used as the experiment sample.The carbide slag was added based on the Ca/S mol ratio of 1.5. K2CO3,Al2O3,Fe2O3 and rare earth minerals(weight of rare earth oxides above 58%) about 1.0% were added in the coal respectively.The promotion effects of the additives and catalytic mechanism on carbide slag sulfur capture were studied.The results show that 4 additives have good promotion effects on sulfur capture by carbide slag between 800 ℃ and 1 100 ℃.Adding K2CO3 has the best sulfur capture result at about 1 100 ℃.Decomposition temperature of carbide slag and utilization efficiency of Ca are improved to increase sulfur capture ratio when Al2O3 is added.Fe2O3 has a good effect on sulfur capture,and the effect weakens with increasing temperature.Rare earth element has particular electronic shell structure which makes especial catalysis impact on sulfur capture.Al2O3 is the best among the 4 additives and it makes sulfur capture ratio reach above 70%,and rare earth minerals is the second.
The high sulfur coal Hunan Meitanba was used as the experiment sample. The carbide slag was added based on the Ca/S mol ratio of 1.5. K2CO3, Al2O3, Fe2O3 and rare earth minerals （ weight of rare earth oxides above 58% ） about 1.0% were added in the coal respectively. The promotion effects of the additives and catalytic mechanism on carbide slag sulfur capture were studied. The results show that 4 additives have good promotion effects on sulfur capture by carbide slag between 800 ℃ and 1 100 ℃. Adding K2CO3 has the best sulfur capture result at about 1 100 ℃. Decomposition temperature of carbide slag and utilization efficiency of Ca are improved to increase sulfur capture ratio when Al2O3 is added. Fe2O3 has a good effect on sulfur capture, and the effect weakens with increasing temperature. Rare earth element has particular electronic shell structure which makes especial catalysis impact on sulfur capture. Al2O3 is the best among the 4 additives and it makes sulfur capture ratio reach above 70%, and rare earth minerals is the second.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2005年第6期767-770,共4页
Journal of Fuel Chemistry and Technology
基金
新世纪优秀人才支持计划(NCET-04-0768)
教育部科学技术研究重点项目(105126)
湖南省自然科学基金(03JJY2002)~~
关键词
燃煤
固硫
电石渣
添加剂
coal combustion
sulfur capture
carbide slag
additives
