主催: 社団法人 日本エネルギー学会 石炭科学部会, 社団法人 日本エネルギー学会 コークス工学研究部会
共催: 化学工学会 エネルギー部会, 日本学術振興会 石炭・炭素資源利用技術第148委員会, 日本エネルギー学会 重質油部会, 岐阜大学
会議名: 第47回石炭科学会議
回次: 47
開催地: 長良川国際会議場
開催日: 2010/09/21 - 2010/09/22
p. 36-37
Mercury oxidation by the V_2O_5/TiO_2 based commercial SCR catalyst was investigated. In coal combustion flue gas, ash derived from coal has been gradually accumulated on the honeycomb surface. By an FE-SEM observation on the honeycomb surface with assistance of FIB(Focused Ion Beam)technique, very fine ash particles with several 10 to several 100 nm of diameter were confirmed to form a porous deposition layer on the honeycomb surface. Both NO conversion and Hg^0 oxidation rates are decreased in accordance with the thickness of the porous deposition layer on the catalyst surface. Diffusion limitation of reactants through the porous deposition layer is one of crucial factor which determines the catalyst life time.
