The influence of poisoning on the deactivation of DeNOx catalysts

被引：14

作者：

Kieltyka, Marcin ^{[1
]}

Soares Dias, Ana Paula ^{[2
]}

Kubiczek, Henryk ^{[3
]}

Sarapata, Bartosz ^{[3
]}

Grzybek, Teresa ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, Fac Energy & Fuels, PL-30059 Krakow, Poland

[2] Univ Lisbon, Inst Super Tecn, LAETA, IDMEC, P-1049011 Lisbon, Portugal

[3] EDF Polska SA, Dept Res & Dev, PL-31587 Krakow, Poland

来源：

COMPTES RENDUS CHIMIE | 2015年 / 18卷 / 10期

关键词：

SCR-NH3; Alkali deactivation; SO2; Industrial catalyst; Co-combustion; Coal/biomass; Catalyst poisoning; COAL FLY-ASH; SCR CATALYSTS; OXIDE CATALYSTS; NO ABATEMENT; FLUE-GAS; REDUCTION; ALKALI; SCALE; VANADIA; NH3;

D O I：

10.1016/j.crci.2015.05.004

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This paper summarizes the results of a research on the influence of the poisoning of the SCR catalyst on its structure. Samples of commercially available SCR catalysts were exposed to real flue gases inside a pulverized coal boiler co-firing coal and biomass. The catalysts were investigated by SEM-EDS, XRD, AAS, UV-vis and 1-butene isomerization as a test reaction. Additionally, ash collected from the catalysts was characterized. The obtained results showed a decrease in the activity by ash and alkali metals originating from biomass. Neither the structural changes in the support nor the changes in the oxidation state and distribution of vanadium were observed during the entire testing period. The acidity of the catalyst, operated for the shortest period (2270 h), increased due to the formation of sulfate species arising from the presence of SO2 in the flue gases. The role of sulfate species and alkali cations in poisoning of catalytic sites is discussed. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

引用

页码：1036 / 1048

页数：13

共 50 条

[1] Poisoning and deactivation of palladium catalysts
Albers, P
Pietsch, J
Parker, SF
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2001, 173 (1-2) : 275 - 286
[2] Deactivation of SCR-DeNOx catalysts by phosphorus compounds
Beck, J
Brandenstein, J
Unterberger, S
Hein, KRG
CHEMIE INGENIEUR TECHNIK, 2004, 76 (10) : 1499 - 1503
[3] Review of the deactivation of selective catalytic reduction DeNOx catalysts
Jiang, Ye
Gao, Xiang
Wu, Weihong
Zhang, Yongxin
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2013, 33 (14): : 18 - 31
[4] Effect of the type of combustion on the poisoning of DENOX catalysts by arsenic
Gutberlet, H.
VGB-Kraftwerkstechnik, 1988, 68 (03): : 287 - 293
[5] DEACTIVATION BEHAVIOR OF SCR DENOX CATALYSTS - BASIS FOR THE DEVELOPMENT OF A NEW-GENERATION OF CATALYSTS
HUMS, E
SPITZNAGEL, GW
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1994, 207 : 11 - PETR
[6] Understanding of deactivation behavior of DeNOx catalysts: A key to advanced catalyst applications
Hums, E
KINETICS AND CATALYSIS, 1998, 39 (05) : 603 - 606
[7] ON THE DEACTIVATION OF SUPPORTED PALLADIUM HYDROGENATION CATALYSTS BY THIOPHENE POISONING
SEOANE, XL
LARGENTIERE, PC
FIGOLI, NS
ARCOYA, A
CATALYSIS LETTERS, 1992, 16 (1-2) : 137 - 148
[8] DENOX CATALYSTS
不详
ERDOL & KOHLE ERDGAS PETROCHEMIE, 1985, 38 (12): : 529 - 529
[9] Influence of the precursors kind of catalysts on the course of a denox reaction
Nazimek, D
Cwickla-Bundyra, W
CATALYSIS TODAY, 2004, 90 (1-2) : 39 - 42
[10] Effect of iron on the deactivation of Ni/clinoptilolite catalysts by thiophene poisoning
Arcoya, A
Seoane, XL
Soria, J
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 1997, 68 (02) : 171 - 176

← 1 2 3 4 5 →