为了更为具体深入地研究钙基固硫剂在煤燃烧过程中的固砷性能，利用高温管式定碳炉燃烧实验，分别考察了钙基固硫剂种类、Ca/S比、粒径及燃烧温度等不同因素对燃煤固砷效率的影响。结果表明，在钙基固硫剂用量Ca/S为2.0，粒径为200目以上时，白云石具有最好的固砷性能且在1 200 ℃高温下其固砷率仍可达到65.71%，因此在燃煤过程中添加的钙基固硫剂不仅可以固硫，而且对砷的挥发性起到了很好的抑制作用。
Abstract
In order to be more specific research the dearsenic characteristics of calciumbased desulfurizing absorbents during coal combustion .The influence on the dearsenic rate of different factors are investigated including the type, Ca/S, particle of calciumbased desulfurizing absorbents and the combustion temperature. The result shows that the amount of calciumbased desulfurizing absorbents is 2.0, the particle size of calciumbased desulfurizing absorbents top 200 mesh, dolomite has the best dearsenic ability and it’s dearsenic rate still could reach 65.71% in 1 200 ℃ high temperatures. Therefore the calciumbased desulfurizing absorbents not only can captue suifur but also was good to inhibit the volatile of arsenic during coal combustion.
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
〓〖ZK(#〗Swaine D J, Goodarzi F. Environmental Aspects of Trace Elements in Coal.:Kluwer Academic Publishers,1995.
〓Guo Xin, Zheng Chuguang, Xu Minghou.Characterization of Arsenic Emission from a Coalfired Power Plant. Energy Fuels, 2004,18(6):18221826.
〓罗春广,马熙华.燃煤砷污染及控制技术研究现状.内蒙古环境科学,2008,20(1):6063.
〓Zhao Yongchun, Zhang Junying, Huang Wenchun, et al. Arsenic Emission During Combustion of High Arsenic Coals from Southwestern Guizhou, China.Energy Conversion and Management,2008,49:615624.
〓Zheng Baoshan, Ding Zhenghua, Zhu Jianming, et al. Issues of Health and Disease Relating to Coal Use in Southwesten China.International Journal of Coal Geology,1999(40):119132.
〓张爱华,黄晓欣,将宪瑶,等.贵州省燃煤型砷中毒研究进展.中国公共卫生,2000,16(8):735736.
〓Cheng J, Zhou J H, Liu J Z, et al. Sulfur Removal at High Temperature During Coal Combustion in Furnaces:a Review.Progress in Energy and Combustion Science,2003,29(5):381405.
〓Narusr I. Comparison of Desulfurization Characteristics of Shell with Limestone//Proceedings of the Third International Coal Combustion Symposium.Beijing:Science Press,1995.144151.
〓Adanez J,Garcia Labiano F, FierroV.Modeling for the High Temperature Sulphation of Calciumbased Sorbents with Cylindrical and Platelike Pore Geometries .Chemical Engineering Science,2000,55(18):36653683.〖ZK)〗
〖KG*2〗〖ZK(#〗王泉海,刘迎晖,张军营,等.CaO对烟气中砷的形态和分布的影响 .环境科学学报,2003,23(4):549551.
〖KG*2〗张军营,任德贻,钟〓秦,等.CaO对煤中砷挥发性的抑制作用.燃料化学学报, 2000, 28(3):198200.
〖KG*2〗程黎花.经济实用的高硫煤固硫剂试验研究.选煤技术,2006(2):57.
〖KG*2〗常丽萍,朱素渝,叶俊岭, 等.Fe2O3SiO2对燃煤过程中石灰石固硫特性的影响.环境化学,1998,17(6):532536.〖ZK)
PDF(461 KB)
