Patent ID: 8932972
Filing Date: 2015-01-13
Classification: B01D,B01J,Y10S

Abstract:
1. Regarding denitrified SCR aged catalyst containing titanium dioxide, vanadium and tungsten, of which life has come to an end, an in situ remanufacturing method of denitrified SCR aged catalyst including: a deactivating material eliminating process which is to remove deactivating materials utilizing a relevant cleaning device that does not involve ultrasonic waves, by utilizing an acidic solution of 3 to 5 mol % as a cleaning agent with a volumetric flow rate per unit volume of said aged catalyst of 0.05-0.5 cm a cleaning process which cleans out the catalyst which has been acid-treated during the prior eliminating process; a drying process which dries the catalyst which has been cleaned out during the prior cleaning process.