The Preparation Of SCR Plate-catalyst And Experimental Study On De-NOx Efficiency

China produces and consumes much energy. China's main primary energy comes from coal. China's coal-fired power generation is mainly through direct combustion, which brings about a large amount of soot, sulfur oxides, nitrogen oxides, mercury and other heavy metal oxides and a large amount of carbon dioxide gas. De-NO_X in flue gas has been another study focus since the desulfurization study became the focal point of research in Chinese thermal power plant emission control. Selective Catalytic Reduction (SCR) is the internationally most widely used flue gas De-NO_X technology, not only because it do not bring about secondary pollution, the installation of structure is simple, the De-NO_X efficiency is high, the operation is reliable, the maintenance is easy, but also because of a relatively low investment .Within the SCR catalysts, the advantages of plate-like catalyst are as follows: small pressure loss, high corrosion resistance, can not easily be contaminated by dust and high mechanical and thermal stability.In this paper, a large number of documents in the collection have been absorbed. In this paper, we focus on two studies: on the one hand, the raw materials and their ratios which are chosen for the plate-like catalyst; on the other hand, the study of shaping, drying and roasting processes. Both the studies are for the preparation of certain De-NO_X plate-like catalysts which have certain mechanical strength and De-NO_X efficiency.In the experiment, through the methods of BET, X-ray diffraction, SEM and other means, we can determine the characterizations of the raw materials of the plate-like catalysts. By changing the ratios of main materials of the plate-like catalysts, we measure the corresponding rate of De-NO_X of the catalysts as to determine the best ratios of the raw materials. Through the applications of impregnation, drying with controlled humidity and temperature-programmed roasting, we bring out the acceptable plate-like catalysts with good hardness and high De-NO_X efficiency.The studies above provide lab support and the basis of experimental data for future research.