2009 Volume 4 Issue 1 Pages 176-187
With the minimum Gibbs energy of the system by computer simulation and experiments, the activity of activated coke (AC) and V2O5/AC was studied by the main components change in the system of flue gases activation. The results of calculating and experiments show that the change of value of carbon monoxide concentration in the system can be used to estimate the desulfurization activity of AC and V2O5/AC, and to find fitting flue gases. When the temperature of activation is 800°C, the carbon monoxide concentration increases as the amount of V2O5 in the AC rise, the V2O5 in the AC can be changed into V2O3 when there is carbon monoxide in the system. When the amount of V2O5 is greater than 5% of the AC, the increase trend of concentration of carbon monoxide will gradually weaken If there is air or O2 in the desulfurization process, the V2O3 in the AC will be changed into V2O4, and then to active V2O5. The active V2O5 in porous AC has a higher catalytic activity than V2O5. In the temperature range of 150~200°C, the catalyst V2O5/AC shows good performance for SO2 removal and is gradually deactivated at temperature above 200°C.