SIMULTANEOUS FLUE GAS DESULFURIZATION AND DENITRIFICATION WITH OZONE AND ACTIVE COKE

摘要

A method for simultaneous desulfurization and denitrification of exhaust gas by active coke is provided to improve substantially desulfurization and denitrification efficiencies, particularly the denitrification efficiency while using an existing active coke process as it is. A method for removing sulfur oxides and nitrogen oxides in exhaust gas comprises injecting ozone, the exhaust gas, and ammonia into an active coke reactor. The method for removing sulfur oxides and nitrogen oxides in exhaust gas comprises mixing the ozone with the exhaust gas and injecting the ammonia into a mixture of the ozone and the exhaust gas. The method for removing sulfur oxides and nitrogen oxides in exhaust gas comprises adjusting a ratio of the concentration of the injected ozone to the concentration of the nitrogen oxides in the exhaust gas to a range of 1:0.9 to 1.1. The method comprises introducing ammonia and ozone generated from an ozone generator(10) into exhaust gas flowing into an active coke reactor(20); and exhausting exhaust gas that has passed through denitrifying and desulfurizing processes in the active coke reactor to the outside through a stack(30).