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水泥分解炉高CaO/CO2环境CO还原NO机制
杨建蒙; 戎旭; 李森; 魏小林
Source Publication化学工程
2019-01
Volume47Issue:1Pages:1-5
ISSN1005-9954
Abstract

通过流化床反应器模拟水泥分解炉高CaO/CO_2环境,并结合分子动力学广义梯度密度泛函理论,研究了CaO对CO还原NO的催化特性和CO_2促使CaO催化失效规律。在900℃、体积分数15%CO_2下,CaO催化作用可使NO脱除效率提高18%左右。在900℃时,当CO_2体积分数由5%升至30%,CO对NO还原率由97.0%降低到23.4%,且随反应时间增长CaO对CO还原NO的催化作用不断减弱。基于广义梯度密度泛函理论计算,CO_2,CO,NO在CaO表面活性位点的吸附能依次为CO_2(-1.869 eV)>NO(-0.781 eV)>CO(-0.669 eV),随着CO_2体积分数升高或反应时间增长,吸附在CaO表面的CO和NO减少,高体积分数CO_2促使CaO催化作用失效。CO还原NO的反应势垒(10.84 eV)大于CaO表面CO还原NO反应势垒(2.06 eV),CaO易催化CO还原NO。

Indexed ByCSCD
Language中文
CSCD IDCSCD:6439944
Ranking1
Contributorli s
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Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78221
Collection高温气体动力学国家重点实验室
Corresponding Author李森
Recommended Citation
GB/T 7714
杨建蒙,戎旭,李森,等. 水泥分解炉高CaO/CO2环境CO还原NO机制[J]. 化学工程,2019,47,1,:1-5.Rp_Au:li s
APA 杨建蒙,戎旭,李森,&魏小林.(2019).水泥分解炉高CaO/CO2环境CO还原NO机制.化学工程,47(1),1-5.
MLA 杨建蒙,et al."水泥分解炉高CaO/CO2环境CO还原NO机制".化学工程 47.1(2019):1-5.
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