负载金属催化剂的褐煤活性半焦脱除烟气中NO性能及机理

doi:10.16085/j.issn.1000-6613.2017-1251

化工进展 ›› 2018, Vol. 37 ›› Issue (03): 1030-1036.DOI: 10.16085/j.issn.1000-6613.2017-1251

负载金属催化剂的褐煤活性半焦脱除烟气中NO性能及机理

杨宁^1,2, 窦金孝¹, 赵永奇¹, 尹丰魁¹, 余江龙¹

1 辽宁科技大学化工学院辽宁省先进煤焦化技术重点实验室, 辽宁鞍山 114051;
2 河北工业职业技术学院, 河北石家庄 050091

收稿日期:2017-06-21 修回日期:2017-09-27 出版日期:2018-03-05 发布日期:2018-03-05
通讯作者: 余江龙,教授,研究方向为洁净煤技术。
作者简介:杨宁(1982-),男,博士研究生,讲师。
基金资助:
国家自然科学基金青年基金（21607068）及辽宁省教育厅科学技术研究校企合作培育项目（2016HZPY06）。

NO removal with carbon catalyzed by activated-char-supported metals during flue gas cleaning

YANG Ning^1,2, DOU Jinxiao¹, ZHAO Yongqi¹, YIN Fengkui¹, YU Jianglong¹

1 Key Laboratory for Advanced Coal and Coking Technology of Liaoning Province, School of Chemical Engineering, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China;
2 Hebei College of Industry and Technology, Shijiazhuang 050091, Hebei, China

Received:2017-06-21 Revised:2017-09-27 Online:2018-03-05 Published:2018-03-05

摘要/Abstract

摘要： 对负载金属催化剂的褐煤活性半焦脱除烟气中NO的性能进行了研究，并对其反应机理进行了探讨。使用自制的脱硝剂在固定床反应装置上进行了脱硝实验；使用红外光谱仪（FTIR）和X射线衍射仪（XRD）对脱硝剂脱硝前后的表面官能团及金属活性相进行了分析。结果表明，金属铜作为催化剂具有优于其他金属的脱硝性能；在铜基催化剂中添加铁作为助剂的活性半焦具有更优的脱硝性能，其有效脱硝质量可达8.70g（基于100g活性半焦）；金属催化剂的低价态活性相具有较高的催化活性，随着脱硝反应的进行，金属活性相被氧化成为活性较低的高价态，最终完全失活；复合金属氧化物铁酸铜能起到活性相"存储"作用，在反应过程中分解成为活性更高的金属活性相，从而提高了脱硝性能。

关键词: 催化剂, 半焦, 脱硝, 复合金属氧化物, 机理, 固定床

Abstract: In this paper,the removal of NO from flue gas by lignite activated char loaded metal catalyst was studied,and the reaction mechanism was discussed. Denitrification experiments were carried out using the homemade denitrification agent in a fixed bed reactor. The surface morphology,element distribution and metal phase form of the denitrification agent before and after the reaction were analyzed by using Fourier transform infrared(FTIR) and X ray diffraction(XRD). The results show that copper has better denitrification performance than other metals and adding iron in copper based catalyst activated char improved its denitrification performance. The denitrification rate reached 8.70g/(100g activated char). During the denitrification process,the catalysts gradually deactivated due to the oxidation of the active metal phases,while the composite metal oxide copper ferrite was decomposed into activated metal with higher activity phase,which improved the denitrification performance.

Key words: catalyst, coal char, denitrification, mixed metal oxide, mechanism, fixed bed

中图分类号:

TQ536.9

杨宁, 窦金孝, 赵永奇, 尹丰魁, 余江龙. 负载金属催化剂的褐煤活性半焦脱除烟气中NO性能及机理[J]. 化工进展, 2018, 37(03): 1030-1036.

YANG Ning, DOU Jinxiao, ZHAO Yongqi, YIN Fengkui, YU Jianglong. NO removal with carbon catalyzed by activated-char-supported metals during flue gas cleaning[J]. Chemical Industry and Engineering Progress, 2018, 37(03): 1030-1036.

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负载金属催化剂的褐煤活性半焦脱除烟气中NO性能及机理

NO removal with carbon catalyzed by activated-char-supported metals during flue gas cleaning

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