采用热重-差热分析法分析了秸秆、木屑生物质燃料的直接燃烧过程,研究了其焚烧灰的化学成分、晶相结构及其形貌等特性.结果表明,秸秆、木屑生物质燃料的挥发分含量高、灰分低、着火温度低、易燃烧、放热量高,其燃烧过程可分为水分蒸发、挥发分析出燃烧和固定碳燃烧3个阶段;秸秆焚烧灰中钾、钙、硫及氯含量高,木屑焚烧灰中碱金属舍量低,硅、钙含量高;生物质燃料焚烧灰中的碱金属氧化物含量高导致其熔点较低、易熔融、结渣.
Direct combustion processes of biomass fuels such as stalk and sawdust are analysed using TG-DSC testing method and the characteristics of their ashes such as chemical components,structure of cysrtal phases and pattern is studied.Biomass fuels have many combustion characteristics such as high voltaic component,low residue,low iginition point,easy combustion and high liberation of heat.Their combustion process can be divised into three periods including moisture evaporation,precipitation and combustion of voltaic component and combustion of fixed carbon.Stalk ash has high content of alkali,calcium,sulphur and chloride elements,and sawdust ash has low content of alkali and high content of silica and calcium elements.Stalk ash and sawdust ash have low melting point resulting from high content of alkali.salt,and are easily melted and forming into slag.
参考文献
| [1] | 万仁新.生物质工程[M].北京:中国农业出版社,1992 |
| [2] | 李文,李保庆,孙成功,尉迟唯,曹变英.生物质热解、加氢热解及其与煤共热解的热重研究[J].燃料化学学报,1996(04):341-347. |
| [3] | 乐园,李龙生.秸秆类生物质燃烧特性的研究[J].能源工程,2006(04):30-33. |
| [4] | 朱平汉.砖瓦厂的生存出路和发展[J].砖瓦,2006(01):72-76. |
| [5] | 刘建禹,翟国勋,陈荣耀.生物质燃料直接燃烧过程特性的分析[J].东北农业大学学报,2001(03):290-294. |
| [6] | Hiroshi Tsuji;Ashwani K Gupta;Toshiaki Hasegawa.High temperature air combustion:from energy conservation to pollution reduction[M].Swedish:CRC Press,2003 |
| [7] | 郎芳,马晓茜,王晶晶.秸秆灰特性的研究[J].可再生能源,2007(04):25-28. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%