Advances in New and Renewable Energy >
Experimental Investigation on Addition of Anticorrosive Agent in a 50-MW Biomass-Fired Circulating Fluidized Bed Boiler
Received date: 2014-04-14
Revised date: 2014-05-14
Online published: 2014-08-30
Experiments on combustion of pure biomass and biomass with anticorrosive agent were carried out in a 50-MW biomass-fired circulating fluidized bed boiler. The anticorrosive agent has a porous structure and mainly contains magnesium oxide (MgO), kaolin, activated alumina (Al2O3) and foamer. Results obtained in experiments show that, boiler thermal efficiency was weakly influenced by the anticorrosive agent, and contents of K and Cl in flue ash decreased as contrast to the increase of K and Cl in furnace slag. When the mass percentage of anticorrosive agent is 3%, in the flue ash, the K values ranged from 7.62% to 5.69%, and Cl values reduced from 3.86% to 2.35%. While in furnace slag, the values K varied from 4.03% to 4.71%, and Cl values increased from 756.58 mg/kg to 1 121.31 mg/kg. Due to the anticorrosive agent, the content of HCl in flue gas decreased from 25 mg/Nm3 to 15 mg/Nm3, as the emission of NO increased from 268 mg/Nm3 to 309 mg/Nm3.
SONG Jing-hui , TAN Wei . Experimental Investigation on Addition of Anticorrosive Agent in a 50-MW Biomass-Fired Circulating Fluidized Bed Boiler[J]. Advances in New and Renewable Energy, 2014 , 2(4) : 270 -274 . DOI: 10.3969/j.issn.2095-560X.2014.04.005
[1] 马孝琴, 骆仲泱, 方梦祥, 等. 添加剂对秸秆燃烧过程中碱金属行为的影响[J]. 浙江大学学报, 2006, 40(4): 599-604
[2] 李诗媛, 吕清刚, 矫维红, 等. 生物质成型燃料循环流化床燃烧试验研究[J]. 燃烧科学与技术, 2009, 15(1): 54-58.
[3] Wei X L, Schnell U, Klaus R G H. Behaviour of gaseous chlorine and alkali metals during biomass thermal utilization[J]. Fuel, 2005, 84(7-8): 841-848.
[4] Muller M, Wolf K J, Smeda A, et al. Release of K, Cl, and S Species during Co-combustion of Coal and Straw[J]. Energy and Fuels, 2006, 20(4): 1444-1449.
[5] 刘洋, 牛艳青, 谭厚章, 等. 生物质锅炉二级过热器结渣恶化机制分析[J]. 中国电机工程学报, 2011, 31(14): 8-12.
[6] 宋景慧, 湛志刚, 马晓茜, 等. 生物质燃烧发电技 术[M]. 北京: 中国电力出版社, 2013.
[7] 宋景慧, 张芸, 胡笑颖, 等. 一种多孔膜结构生物质锅炉抗结焦剂及其制备方法[P]. 中国. CN2012100 27287.8. 2012.
[8] 开兴平, 杨天华, 孙洋, 等. 稻杆与煤混燃过程中碱金属迁移转化规律研究[J]. 中国电机工程学报, 2012, 32(8): 133-138.
[9] Demirbas A. Potential applications of renewable energy sources, biomass combustion problems in boiler power systems and combustion related environmental issues[J]. Progress in Energy and Combustion Science, 2005, 31(2): 171-192.
[10] Nielsen H P, Frandsen F J, Dam-Johansen K, et al. The implications of chlorine-associated corrosion on the operation of biomass-fired boilers[J]. Progress in Energy and Combustion Science, 2000, 26(3): 283-298.
[11] 别如山, 李炳熙, 陆慧林, 等. 燃生物质废料流化床锅炉[J]. 热能动力工程, 2000, 15(88): 345-347.
[12] 杨天华, 贺业光, 李润东, 等. 秸秆与煤混燃过程中碱金属钾对氮迁移转化的影响[J]. 燃料化学学报, 2009, 37(3): 373-376.
[13] Loo S V, Koppejan J编, 田宜水, 姚向君译. 生物质燃烧与混合燃烧技术手册[M]. 北京: 化学工业版社, 2008.
[14] Aho M, Ferrer E. Importance of coal ash composition in protecting the boiler against chlorine deposition during combustion of chlorine-rich biomass[J]. Fuel, 2005, 84(2-3): 201-212.
/
〈 |
|
〉 |