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有色金属工程:2021,(3):-
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预焙阳极煅烧烟气中可凝结颗粒物的排放研究
于洋1, 程俊峰1, 董长青2, 周欣1, 王玉山1, 刘英华1
(1.北京清新环境技术股份有限公司;2.华北电力大学 新能源学院)
Study on Emission of Condensable Particulate Matter in Flue Gas from Prebaked Anode Calcination
YU Yang1, CHENG Junfeng1, DONG Changqing2, ZHOU Xin1, WANG Yushan1, LIU Yinghua1
(1.Beijing SPC Environment Protection Tech Co., Ltd.;2.School of New Energy, North China Electric Power University)
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投稿时间:2020-08-24    修订日期:2020-08-30
中文摘要: 本研究对预焙阳极煅烧烟气中的可凝结颗粒物(CPM)以及其重要的气态前体物三氧化硫(SO3)进行了测试。研究发现,湿法脱硫(WFGD)装置与湿式电除尘器(WESP)对SO3具有协同脱除效果。WFGD对SO3的去除率为47.92%。WESP对SO3的去除率达到了88.75%,可有效解决“蓝色烟羽”问题。SO3与CPM在WESP出口的浓度分别为4.87 mg/m3、8.14 mg/m3。在WESP之前,CPM占总颗粒物的32.34%,这一数值在WESP之后变为了74.75%,需要引起重视。WESP对CPM的去除率为80.36%。无机组分为CPM的主要组分。在凝结态的CPM中,硫元素与氮元素分别以SO42﹣和NH4+的形式存在。
Abstract:Condensable particulate matter (CPM) and its important gaseous precursor, sulfur trioxide (SO3) in the prebaked anode calcination flue gas, were measured in this study. It was found that the wet flue gas desulfurization (WFGD) device and the wet electrostatic precipitator (WESP) have synergistic effect on the removal of SO3. The removal rate of SO3 in the WFGD was 47.92%. The removal rate of SO3 by the WESP reached 88.75%, which can effectively solve the problem of “blue smoke plume”. The concentrations of SO3 and CPM at the outlet of the WESP were 4.87 mg/m3 and 8.14 mg/m3, respectively. CPM accounted for 32.34% of the total particulate matter before the WESP, and this value became 74.75% after the WESP, which needs to be paid attention to. The removal rate of CPM in the WESP was 80.36%. Inorganic fraction was the main component of the CPM. In the CPM of the condensation state, sulfur and nitrogen exist in the form of SO42﹣and NH4+, respectively.
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基金项目:国家自然科学基金项目(51776070)
引用文本:
于洋,程俊峰,董长青,周欣,王玉山,刘英华.预焙阳极煅烧烟气中可凝结颗粒物的排放研究[J].有色金属工程,2021,(3):.

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