The nitrogen oxide (NOx) on the ecological environment and human health cause great harm, become the environment one of the major [14] including NOx industrial waste gas commonly used denitration method has absorption method, oxidation-absorption method and adsorption This design for pharmaceutical factory emissions including NOx waste gas oxidation degree under the conditions of low, the characteristics of emissions, the gas phase catalytic oxidation-alkali liquor absorption method for the process This design processes include NOx in water and waste gas oxidation, two level absorption tower absorption NOx emissions in NaNO2 by-products of purification and NaNO3 of purification three Among them, the oxidation in addition to water absorbent choose activated carbon, choose ZSM-5 molecular sieve catalyst, the absorption tower packed tower, absorbing liquid with NaOH Results: after two level absorption tower absorption processing, eventually NOx emissions export concentration of 14 mg/m3, discharge flow of 256 kg/h, less than a country NOx emissions standards (GB16297-1996) : more than 15 mg/m3 concentration, 40 m air flow line than 4 kg/ Absorbing liquid by a simple processing can have to have certain economic value by-products NaNO1 t/a, and NaNO7 t/ (yield), total operation cost is 5553 million yuan/year, by-products benefits for 1658 million yuan/year, the actual operation cost 389500 yuan 嘻嘻,这很简单呀~。我翻译完了。。