论文信息 - A practical scale evaluation of sulfated V2O5/TiO2 catalyst from metatitanic acid for selective catalytic reduction of NO by NH3

A practical scale evaluation of sulfated V2O5/TiO2 catalyst from metatitanic acid for selective catalytic reduction of NO by NH3

Abstract The characteristics of sulfated V 2 O 5 /TiO 2 honeycomb catalyst from metatitanic acid (MTA) were studied in the practical conditions of pilot plant using high dust flue gas from coal fired utility boiler. The effects of reaction temperature, NH 3 /NO mole ratio, space velocity and operation time on the reduction of nitric oxide (NO) were mainly investigated for engineering application. The catalyst showed high NO reduction of about 90% at a space velocity of 4000 h −1 , NH 3 /NO mole ratio of 1.0 and reaction temperature of 300–400 °C. The efficiency of this catalyst remained constant during the present experiment of 2400 h and the erosion by fly ash was lower than that of the commercial catalysts. These results clearly demonstrate the high potential for this catalyst to be applied commercially for the control of NO x emissions from coal fired utility boiler.

[1] Young Gul Kim,et al. A pilot plant study for selective catalytic reduction of NO by NH3 over mordenite-type zeolite catalysts , 1997 .

[2] Dr.H. Gutberlet,et al. Selective catalytic reduction of nox from coal fired power plants , 1993 .

[3] R. Heck. Catalytic abatement of nitrogen oxides–stationary applications , 1999 .

[4] I. Nam,et al. Characteristics of V2O5 supported on sulfated TiO2 for selective catalytic reduction of NO by NH3 , 2000 .

[5] R. T. Yang,et al. Selective Catalytic Reduction of NO with NH3 on SO−24/TiO2 Superacid Catalyst , 1993 .

[6] Guido Busca,et al. Chemical and mechanistic aspects of the selective catalytic reduction of NOx by ammonia over oxide catalysts: A review , 1998 .

[7] J. W. Sale,et al. Testing zeolite SCR catalysts under protocol conditions for NOx abatement from stationary emission sources , 2000 .

[8] P. Ciambelli,et al. The influence of sulphate on the catalytic properties of V2O5-TiO2 and WO3-TiO2 in the reduction of nitric oxide with ammonia , 1996 .