脱硝催化剂在金属基体表面的负载方法与工艺研究进展

doi:10.16085/j.issn.1000-6613.2017-1839

摘要/Abstract

摘要： 基于负载脱硝催化剂的换热管烟气脱硝与余热回收一体化技术，具有良好的发展前景，但在实际应用中缺乏在铁基体表面高效、稳定负载脱硝催化剂的方法及工艺。本文综述了国内外有关脱硝催化剂在金属基体表面的各种负载方法及其特性，重点探讨了浸渍法、粉末涂覆法、离子交换法、脉冲激光沉淀法、辊压法、浆料喷涂法等直接负载方法，以及溶胶-凝胶法、高温氧化法、等离子喷涂法、超音速火焰喷涂法、电弧喷涂法、电泳沉积法等间接负载方法的中间过渡层制备方法。同时，对直接负载方法及间接负载方法的优缺点分别进行了对比分析，以期为烟气脱硝与余热回收一体化技术的应用提供借鉴，并指出等离子喷涂-浸渍法是脱硝催化剂在铁基体表面负载的可行方法之一。

关键词: 催化剂, 金属基体, 负载方法, 工业炉窑, 选择催化还原, 稳定性

Abstract: The integration of flue gas denitrification and waste heat recovery inside heat exchange tubes loading with the denitrification catalyst has shown a good prospect. However, high-efficient and stable technique to load the denitrification catalyst on the surface of the iron substrate are lacked in practical application. In this paper, various loading methods and their characteristics of denitrafication catalyst on the surface of metallic matrix at home and abroad are reviewed. The direct loading method such as impregnation method, powder-coated method, ion-exchange method, pulsed laser deposition method, roller pressure method, slurry spraying method, and the indirect loading method such as sol-gel method, high-temperature oxidation method, plasma spraying method, high velocity oxygen fuel method, arc spraying method and electrophoretic deposition method are discussed respectively. At the same time, in order to provide reference for the application of the integration technology of flue gas denitrification and waste heat recovery, the advantages and disadvantages of the direct and indirect loading methods are compared and analyzed. One of the plasma spraying-impregnation method was proposed as a feasible method for loading denitrification catalyst on the surface of the iron substrate.

Key words: catalyst, base metal, loading method, industrial furnace, selective catalyst reduction, stability

中图分类号:

O643.36

文聪, 陈冬林, 熊颖. 脱硝催化剂在金属基体表面的负载方法与工艺研究进展[J]. 化工进展, 2018, 37(08): 3001-3008.

WEN Cong, CHEN Donglin, XIONG Ying. Research progress of the loading method of denitrification catalyst on the surface of metal base[J]. Chemical Industry and Engineering Progress, 2018, 37(08): 3001-3008.

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