TIANJIN CEMENT INDUSTRY DESIGN AND RESEARCH INSTITUTE CO. LTD.

Research progress of nitrogen oxides (NOx) control technology for industrial flue gas

The paper reviews several denitration technologies, such as adsorption, reduction, photocatalytic, oxidation-absorption and biological denitration, etc. In order to improve denitration efficiency, it can also be coupled with UV, microwave and electrochemical technology. The denitration mechanisms are introduced and combined with the latest research progress of the report to make a specific description, a brief evaluation and comparison. Finally, the flue gas denitration technology is summarized and prospects presented, in order to provide reference for the progress of new denitration technology and the early industrial application.

1 Introduction

With the development of the economy and the progress of technology, energy consumption is growing fast. Along with the increasing of energy consumption, atmospheric pollutants are increasing. Nitrogen oxide, including NO, NO2 and N2O3 etc., is one of the main atmospheric pollutants, which causes harm to the ecological environment and human health, and also can form acid rain and photochemical smog. In China, with the gradual implementation of the ultra-low emission requirement, the state has set limits on the emission concentration and total emissions of nitrogen oxides.

China has...

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