Numerical simulation study of baking thermal characteristics of SCR denitrification catalyst in furnace activated reactor

Abstract In order to solve the technical difficulties of SCR denitrification catalyst in the furnace activation baking process, a deactivated catalyst baking scheme is proposed in this study based on hot air recirculation of an electric heater. Additionally, numerical simulation methods are used to study the thermophysical characteristics and energy consumption characteristics of SCR denitrification catalyst in a furnace baking system of 300 MW thermal power uni. The results show that: the power of the heat source is 5.5～11 MW, the heating time is 5,000～11,000 s and the energy consumption is 15,534.7-20,931.3 kW·h, which fully meets the engineering needs. During the warming process, when the baking time of this system is 9,000 s (2.5 h), the temperatures of the two-layer catalyst center profiles are 453.55℃ and 447.05℃, with the relative standard deviations being 0.29% and 0.36%, meeting the requirements of temperature and temperature field for the activation in the furnace.