| 尿素热解研究及其在脱硝中的应用 |
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| 引用本文： | 喻小伟,李宇春,蒋娅,庞飞飞,陈进生,商雪松.尿素热解研究及其在脱硝中的应用[J].热力发电,2012,41(1):1-5. |
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| 作者姓名： | 喻小伟 李宇春 蒋娅 庞飞飞 陈进生 商雪松 |
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| 作者单位： | 1. 长沙理工大学化学与生物工程学院,湖南长沙,410114
2. 中国科学院城市环境研究所,福建厦门,361021 |
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| 基金项目： | 国家自然科学基金资助项目，长沙理工大学电力与交通材料保护湖南省重点实验室开放基金资助项目 |
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| 摘 要： | 介绍了国内外对尿素热解的研究进展及其在选择性催化还原(SCR)脱硝中的应用。重点分析了尿素和尿素-水溶液在不同温度条件下的分解,探讨了催化剂促进尿素热解中间产物异氰酸(HNCO)的水解和提高NH3转化率的作用。促进尿素分解的催化剂有V2O5-WO3/TiO2、Cu-ZSM5、Fe-ZSM5、TiO2、Al2O3等,其中粉末状V2O5-WO3/TiO2能极大地提高HNCO的水解速率。
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| 关 键 词： | 脱硝 尿素 热解 尿素-水溶液 HNCO 催化剂 |
STUDY ON PYROLYSIS OF UREA AND ITS APPLICATION IN DENITRIFCATION |
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| YU Xiaowei
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LI Yuchun
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JIANG Ya
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PANG Feifei
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CHEN Jinsheng
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SHANG Xuesong.STUDY ON PYROLYSIS OF UREA AND ITS APPLICATION IN DENITRIFCATION[J].Thermal Power Generation,2012,41(1):1-5. |
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| Authors: | YU Xiaowei LI Yuchun JIANG Ya PANG Feifei CHEN Jinsheng SHANG Xuesong |
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| Affiliation: | 1.College of Chemical and Biological Engineering,Changsha University of Science and Technology,Changsha 410114,Hunan Province,PRC 2.Research Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,Fujian Province,PRC |
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| Abstract: | The progress of study on pyrolysis of urea at home and abroad,and its application in selective catalystic reduction(SCR) denitrification process have been presented,the pyrolysis of urea and urea-water solution under different temperatures being analysed,and an approach to use catalyst in promoting pyrolysis of urea being made.The isocyanic acid(HNCO),as an intermediate product in hydrolysis of catalysis,plays a key role to enhancing coversion rate of NH3.The catalysts for promoting decomposition of urea have V2O2-WO3/TiO2,Cu-ZSM5,Fe-ZSM5,TiO2,and Al2O3 etc.,among them,the powdered V2O5-WO3/TiO2 can extremely enhance the speed rate of hydrolysis for HNCO. |
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| Keywords: | urea urea-water solution pyrolysis denitrification HNCO catalyst |
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