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V_2O_5-WO_3/TiO_2烟气脱硝催化剂失活前后元素的赋存特征
武文粉; 包炜军; 李会泉; 戚春萍
2016
Source Publication过程工程学报
Issue5Pages:"794-801"
Abstract

研究了火电厂烟气脱硝过程中新催化剂和运行35000 h后不可直接再生失活催化剂的元素分布规律和表面结合方式等特征.结果表明,在气体体积空速为30000 h-1、NH3/NO体积比为0.8及O_2体积含量为5%条件下,失活催化剂脱硝率在200℃仅为41%,在250~400℃比新催化剂下降8%.失活催化剂晶型仍为锐钛型Ti O_2,但整体蜂窝状结构塌陷,化学磨损导致晶体粒径降至37.2 nm.催化剂表面Fe,K,Al,As等杂质元素非均匀沉积,使孔容减小10.44%.对比新催化剂,失活催化剂中锐钛型Ti O_2载体呈现非均匀分布,且表面V/Ti原子比降低29.53%,V4+/(V4++V5+)价态...

Keyword选择性催化还原脱硝催化剂 失活 元素 赋存特征 光谱分析
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22264
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
武文粉,包炜军,李会泉,等. V_2O_5-WO_3/TiO_2烟气脱硝催化剂失活前后元素的赋存特征[J]. 过程工程学报,2016(5):"794-801".
APA 武文粉,包炜军,李会泉,&戚春萍.(2016).V_2O_5-WO_3/TiO_2烟气脱硝催化剂失活前后元素的赋存特征.过程工程学报(5),"794-801".
MLA 武文粉,et al."V_2O_5-WO_3/TiO_2烟气脱硝催化剂失活前后元素的赋存特征".过程工程学报 .5(2016):"794-801".
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