CIESC Journal ›› 2021, Vol. 72 ›› Issue (11): 5598-5606.DOI: 10.11949/0438-1157.20210822

• Catalysis, kinetics and reactors • Previous Articles     Next Articles

Preparation and pilot-scale test of V2O5-MoO3/TiO2 catalytic filter bag

Yuting SHI1,2(),Lin HUANGFU2,Changming LI3,Yue WANG4,Shiqiu GAO2,Xiaoguang SAN1,Zhennan HAN1,Jian YU2()   

  1. 1.College of Chemical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, Liaoning, China
    2.State Key Laboratory of Multi-phase Complex System, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
    3.School of Ecology and Environment, Beijing Technology and Business University, Beijing 100048, China
    4.Zhejiang Baiyu Intelligent Technology Co. , Ltd. , Quzhou 324000, Zhejiang, China
  • Received:2021-06-21 Revised:2021-08-30 Online:2021-11-12 Published:2021-11-05
  • Contact: Jian YU

V2O5-MoO3/TiO2催化滤袋的制备及中试应用

史玉婷1,2(),皇甫林2,李长明3,王月4,高士秋2,伞晓广1,韩振南1,余剑2()   

  1. 1.沈阳化工大学化学工程学院,辽宁 沈阳 110142
    2.中国科学院过程工程研究所多相复杂系统国家重点实验室,北京 100190
    3.北京工商大学生态环境学院,北京 100048
    4.浙江佰誉智能技术有限公司,浙江 衢州 324000
  • 通讯作者: 余剑
  • 作者简介:史玉婷(1995—),女,硕士研究生,shiyuting1107@163.com
  • 基金资助:
    国家重点研发计划项目(2019YFE0197200)

Abstract:

In order to solve the SO2 poisoning problem of the existing Mn-based catalytic filter bags, a catalytic filter bag based on V2O5-MoO3/TiO2 was prepared for the simultaneous removal of NOx and dust in the range of 180—260℃. The experimental results displayed that the double-layer filter bags had excellent denitration activity and SO2/H2O-resistant stability when the gas filter surface velocity was 0.2 m/min. The double-layer catalytic filter bags were used in the pilot-scale test of pure oxygen glass kiln, when the flue gas volume was about 2000—3000 m3/h, SO2 concentration in the range of 20—30 mg/m3, the water vapor content was 10%(vol) and NOx concentration in the range of 400—550 mg/m3, the NOx conversion reached 88.14%—95.06% from 170℃ to 210℃, and the good denitration performance of catalytic filter bags had been verified. After 1500 h of continuous operation, the activity showed a slight decay of about 5%. Under high-sulfur flue gas conditions (300—500 mg/m3) for 100 h continuous operation, the catalytic filter bag was found to be deactivated. SEM-EDS and XPS characterizations proved that the catalyst deactivation was due to the deposition of ammonium sulfate on the surface of the filter bag fiber and the part of active site is covered.

Key words: V2O5-MoO3/TiO2, catalytic filter bag, SCR, SO2/H2O resistant, pilot-scale test

摘要:

为解决现有Mn基催化滤袋SO2中毒的问题,制备了基于V2O5-MoO3/TiO2的催化滤袋,用于在180~260℃范围内同时去除NOx和粉尘。实验结果表明,双层滤袋在气体过滤面速度为0.2 m/min时具有良好的脱硝活性和抗硫抗水性能。在纯氧玻璃窑炉中试中采用制备的双层催化滤袋进行了试验,烟气量为2000~3000 m3/h、SO2浓度在20~30 mg/m3范围内、水蒸气含量10%(体积分数)、NOx浓度为400~550 mg/m3,在170~210℃范围内NOx转化率可达到88.14%~95.06%,验证了催化滤袋的脱硝性能;连续运行1500 h后,活性出现5%左右的微弱衰减;在高硫烟气条件下(300~500 mg/m3)连续运行100 h发现催化滤袋失活,SEM-EDS和XPS表征证明催化剂失活是由于硫铵类物质在滤袋纤维表面沉积,部分活性位点被覆盖所致。

关键词: V2O5-MoO3/TiO2, 催化滤袋, 选择性催化还原, 抗硫抗水, 中试应用

CLC Number: