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石灰对高温烟气中重金属的吸附特性研究 被引量:2

HEAVY METALS'ABSORPTION BY LIMES AT HIGH TEMPERATURE INCINERATION FLUE GAS
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摘要 研究了常用的酸性气体吸收剂石灰在600℃和800℃下对焚烧烟气中常见的四种重金属Cd,Pb,Zn和Cu的吸附效果。实验中采用重金属的氯化物作为蒸发源将重金属挥发到烟气中,吸收剂在流化床中对烟气中的重金属进行吸收。实验结果表明石灰类吸收剂在600℃和800℃时对四种重金属均有一定的吸附效果,其中Cd和Pb容易被吸附,而Zn难以被吸附。所试验的三种石灰吸收剂中,CaCO3对重金属的吸附能力相对较差,特别是对Cd和Pb;而普通Ca(OH)2的吸附能力最强。为了提高高温烟气净化残渣的质量,600℃及以上的高温下宜使用CaCO3和改性Ca(OH)2作酸性气体的吸收剂。 In this paper three kinds of limes which are common absorbents for acidic gases are used to absorb four kinds of typical heavy metals occurring in the incineration flue gases,namely,Cd,Pb,Zn and Cu under the temperatures of600℃and800℃.In the laboratory chlorides of four heavy metals were evaporated to formvapor in the flue gas and then the heavy metal vapors were absorbed in the fluidized-bed reactor with limes as absorbents.The experimental results showed that under600℃and800℃,the four kinds of heavy metals can be absorbed to different levels.Cd and Pb are relatively easier to be absorbed,while Zn is most difficult to be absorbed under the conduction of high temperatures.Of the three tested limes,CaCO 3 was the worst one to work as heavy metal abˉsorbent,especially for Cd and Pb;while common Ca(OH) 2 was the most effective one.In order to improve the quality of flue gas ashes(including fly ash,reacted and un-reacted absorbents)modˉified Ca(OH) 2 and CaCO 3 were suggested as absorbents for high temperature flue gas scrubbing.
出处 《能源环境保护》 2005年第3期16-20,23,共6页 Energy Environmental Protection
基金 国家自然科学基金项目(50006009) 上海市青年科技启明星项目(01QF14040)资助
关键词 重金属 石灰 吸附 高温 烟气净化 残渣 heavy metals limes absorption high temperatures flue gas scrubbing flue gas ashes
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  • 1李建新.[D].浙江大学,2004.6.49~56.
  • 2Y.Lin, D.Z.Chen, P.Wei. High -temperature Capture of Gaseous HCl from Incineration Flue Gas with calcium carbonate [ C ]. Proceeding of 3rd International Conference on Combustion, Incineration/Pyrolysis and Emission Control, Edited by Kafa CEN, Jianhua YAN and Yong ChI. October 21 ~ 23,2004, Hangzhou, China, 2004, 449 ~ 452.
  • 3林瑜,魏芃,陈德珍,马莉,张鹤声.石灰对HCl气体净化效率的温度特性[J].工程热物理学报,2004,25(2):337-340. 被引量:5
  • 4Jyh -Cherng Chen, Ming -Yen Wey, Yao -Chi Lin. The adsorption of heavy metals by different sorbents under various incineration condition[J]. Chemophere, 1998, 37(13):2617~ 2625.
  • 5Z. S. Liu, Ming -Yen Wey, C. L Lin. The capture of heavy metals from incineration using a spray dryer integrated with a fabric filter using various additives [J] . Air & Waste Management. Assoc., 2001, 51:983 ~ 991.
  • 6陈德珍,张鹤声.中低温下钠碱对氢氧化钙干式吸收HCl气体的改良[J].工程热物理学报,1999,20(4):520-524. 被引量:10
  • 7Emission Measurement Center, "EPA Method 29 -Determination of metals emissions from stationary source," Technical support division,OAQPS, EPA, March 22, 1999.
  • 8陈德珍,林瑜,汪雄平,张鹤声.改性石灰吸收HCl气体过程中的物理化学特性[J].同济大学学报(自然科学版),2004,32(1):72-77. 被引量:12
  • 9B.K. Gullett; K.R. Bruce; L.O. Beach. The effect of metal catalysts on the fonnation of polychlorinated dibenzofuran precursors[J] .Chemosphere, 1990, 20:1945 ~ 1952.
  • 10林瑜 陈德珍 梅红生.石灰在带旋风除尘器的烟道内高温净化HCl气体的研究[C].中国工程热物理学会.2004年学术会议燃烧学论文集,No.044109[C].,.808-814.

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