Abstract:
Disclosed are a catalyst for synergistic control of oxynitride and mercury and a method for preparing the same. The catalyst includes the following components by mass percentage: a carrier: TiO2 72%-98.6%, active components: V2O5 0.1%-5%, WO3 1%-10%, Cr2O3 0.1%-5% and Nb2O5 0.1%-5%, and a co-catalyst of 0.1%-3%. The present invention can be used for reducing the oxynitrides in a flue gas, meanwhile oxidizing zero-valent mercury into bivalent mercury and then controlling the reactions, has relatively high denitration performance and also has high mercury oxidation performance; compared with current commercial SCR catalysts, the mercury oxidation rate of the catalyst is improved to a great extent, which can adapt to the requirements for mercury removal in China's coal-fired power plants, the conversion rate of SO2/SO3 is relatively low, and the catalyst has a better anti-poisoning ability, and is a new catalyst with a low cost and high performance.
Abstract translation:公开了用于氮氧化合物和汞的协同控制的催化剂及其制备方法。 该催化剂以质量百分比计包含以下组分:载体:TiO 2 72%-98.6%,活性组分:V 2 O 5 0.1%-5%,WO 3 1%-10%,Cr 2 O 3 0.1%-5%和Nb 2 O 5 0.1%-5% ,和0.1%-3%的助催化剂。 本发明可用于还原烟气中的氮氧化物,同时将零价汞氧化成二价汞,然后控制反应,具有较高的脱硝性能,并且还具有高汞氧化性能; 与目前商用SCR催化剂相比,催化剂的汞氧化率在很大程度上有所提高,适应了中国燃煤电厂汞去除的要求,SO2 / SO3的转化率相对较低, 催化剂具有更好的抗中毒能力,是低成本,高性能的新型催化剂。
Abstract:
A dual-cavity method and device for collecting and storing solar energy with metal oxide particles. Solar radiation irradiates into a light receiving cavity of a dual-cavity, heat-collecting reactor to heat a separating plate and preheat metal oxide particles. The preheated metal oxide particles then enter a reacting cavity. As temperature increases, the metal oxide particles reduce to release oxygen, which discharges through a gas outlet. Reduced metal oxide particles discharge through a particle outlet into a particle storage tank, and then into an oxidation heat exchanger to react with the discharged oxygen discharged to release and transfer stored chemical energy to a medium to be heated. The oxidized metal oxide particles are conveyed into a storage tank, and again enter into a particle inlet of the light receiving cavity. Ambient air controls the gas flow rate in the reactor and the reacting rate in exchanger.