초록 ▼

To clean the exhaust gas of internal-combustion engines or other machines which are operated with fossil fuel, it is proposed to firstly pretreat the exhaust gas in a non-thermal normal-pressure gas discharge and subsequently allow a selective catalytic reduction of oxidic noxious substances to take

To clean the exhaust gas of internal-combustion engines or other machines which are operated with fossil fuel, it is proposed to firstly pretreat the exhaust gas in a non-thermal normal-pressure gas discharge and subsequently allow a selective catalytic reduction of oxidic noxious substances to take place with the addition of a suitable reduction substance, or to allow a selective catalytic decomposition to take place. The device for removing the oxidic noxious substances is characterized by a series circuit of at least one module with a gas discharge section and at least one module with a catalytic-converter section, and is suitable in particular for use in a diesel engine.

대표청구항 ▼

[ We claim:] [1.]1. A method for removing oxidic noxious substances in an exhaust gas containing oxygen, which comprises:pretreating, initially, the exhaust gas containing the oxidic noxious substances including nitrogen monoxide in a non-thermal normal-pressure gas discharge in which the nitrogen m

[ We claim:] [1.]1. A method for removing oxidic noxious substances in an exhaust gas containing oxygen, which comprises:pretreating, initially, the exhaust gas containing the oxidic noxious substances including nitrogen monoxide in a non-thermal normal-pressure gas discharge in which the nitrogen monoxide is oxidized forming nitrogen dioxide and a degree of oxidation of the nitrogen monoxide to form the nitrogen dioxide being held below 50%; andperforming, subsequently, a selective catalytic reduction of the oxidic noxious substances with an addition of ammonia functioning as a reduction agent and resulting in water and nitrogen as reaction products.