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The method of the selective catalytic reduction (SCR) has become one of the most effective applications of NOx removal technology. Most studies focus the side on fixed bed denitrification at low temperature low space velocity experimental condition, while few studies about denitrification at low temperature high space velocity experimental condition. The catalyst, Mn-Ce/AC, has been prepared by impregnation method in this paper. Under the experimental condition of low temperature high space velocity, catalytic activity was researched in fixed bed denitrification reactor and fluidized bed denitrification reactor respectively. Results show that, the catalytic NO removal is 10.5% at 180°C, the space velocity is 1, in fixed bed denitrification reactor; while it is 81.3% in fluidized bed denitrification reactor. Introduction NOx is one of the most serious atmosphere pollutants, which pollution and damage our living environment more and more serious. The emission of NOx is increasing with the rapid development of our country electric power industry [1,2]. At present, the method of the selective catalytic reduction (SCR) is the main measures of NOx removal in coal-fired power plant [3]. Most research fellow concentrate the attention on fixed bed denitrification reactor in conventional, and the research and development of fluidized bed is due to its advantage in the combustion process [4-8]. In this paper, catalyst was put into fluidized bed denitrification reactor of low temperature high space velocity experimental condition, realized an ideal fluidization state by suitable the space velocity. As a result of the contact area was increased between catalyst and reaction gas, and the catalytic denitration efficiency was enhanced. SCR denitrification technology SCR method is defined as the NOx in the flue gas, which was transformed to N2 and H2O selectively by a series of chemical reactions after the catalyst was added into the reactor under a certain temperature condition. The reducing agent, NH3, is not directly reacted with the O2 unreacted in the flue gas. Therefore, this method is known as "selective”. There are other reducing agents as well as H2, CO, CH4 and the like [9]. Table 1.shows that several common reducing agents SCR chemical equations. Currently, the most widely used reducing agent is NH3. There are main reaction equations of NH3-SCR as follows [10]: 4NO+4NH3+O2=4N2+6H2 (1) 2NO+4NH3+O2=3N2+6H2O (2) 8NH3+6NO2=7N2+12H2O (3) 2nd International Workshop on Materials Engineering and Computer Sciences (IWMECS 2015) © 2015. The authors Published by Atlantis Press 90

Experimental Research on NO Removal for Fixed Bed Reactor and Fluidized Bed Reactor at Low Temperature