MANUFACTURE OF REACTING MEDIA WITH CARBON SUPPORT IMPREGRATED METAL CATALYST AND REMOVING OF NOX USING ITS MEDIA

摘要

A method of preparing a reactive medium comprising a carbon support impregnated with a metal catalyst and a method for removing NOx by using the reactive medium are provided to complement and replace the selective catalytic reduction process by directly reducing NOx exhausted from actual combustion flue gas by using an inexpensive metal impregnated carbon support without using a reducing agent such as ammonia. A method of preparing a reactive medium for NOx removal comprising a metal catalyst impregnated on a carbon support comprises: adding 47.37 to 49.75 wt.% of water into 0.5 to 5.26 wt.% of a metal catalyst to prepare an aqueous solution; adding 47.37 to 49.75 wt.% of a carbon support into the aqueous solution; and impregnating the carbon support with the aqueous solution in a rotary vacuum dryer by controlling an impregnation temperature to a range from 25 to 90 deg.C, controlling an impregnation speed to a range from 40 to 100 rpm, and controlling an impregnation pressure to a range from 500 to 700 mmHg. A method for removing NOx in an oxygen-free gas by using the reactive medium comprises removing NOx by controlling an injection flow rate of combustion flue gas to a range from 10,000 to 30,000 hr^-1, and controlling an operating temperature of 450 deg.C or more in a reactive medium comprising a carbon support impregnated with a metal catalyst.