TY - JOUR
T1 - In situ regeneration of commercial NH3-SCR catalysts with high-temperature water vapor
AU - Shi, Yao
AU - Zhang, Pei
AU - Fang, Tuotuo
AU - Gao, Erhao
AU - Xi, Fujuan
AU - Shou, Tianyu
AU - Tao, Mengna
AU - Wu, Siming
AU - Bernards, Matthew T.
AU - He, Yi
AU - Pan, Hua
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11
Y1 - 2018/11
N2 - The performance of a commercial NH3-SCR catalyst used for 20,000 h in a 660 MW coal fired power plant was evaluated after treated in situ with water vapor at 300–350 °C for 336 h. The conversion of NOx reached 91.4% after this water treatment. The recovery of catalytic activity is mainly due to the removal of potassium, arsenic and sulfate-containing deposits from the catalyst surface, as well as the increase of surface active oxygen species and specific surface area. These results indicate that commercial NH3-SCR catalysts are deactivated by the deposition of water-soluble substances and which can be in situ regenerated cost-effectively with high-temperature water vapor treatment.
AB - The performance of a commercial NH3-SCR catalyst used for 20,000 h in a 660 MW coal fired power plant was evaluated after treated in situ with water vapor at 300–350 °C for 336 h. The conversion of NOx reached 91.4% after this water treatment. The recovery of catalytic activity is mainly due to the removal of potassium, arsenic and sulfate-containing deposits from the catalyst surface, as well as the increase of surface active oxygen species and specific surface area. These results indicate that commercial NH3-SCR catalysts are deactivated by the deposition of water-soluble substances and which can be in situ regenerated cost-effectively with high-temperature water vapor treatment.
KW - Commercial deNO catalysts
KW - High-temperature water vapor treatment
KW - In situ regeneration
KW - NH-SCR
UR - http://www.scopus.com/inward/record.url?scp=85051814021&partnerID=8YFLogxK
U2 - 10.1016/j.catcom.2018.08.009
DO - 10.1016/j.catcom.2018.08.009
M3 - 文章
AN - SCOPUS:85051814021
SN - 1566-7367
VL - 116
SP - 57
EP - 61
JO - Catalysis Communications
JF - Catalysis Communications
ER -