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首页> 外文会议>Power and Energy Engineering Conference (APPEEC), 2010 >Effect of Pore Texture and Surface Chemistry on SO2 Removal by Activated Carbon in Fluidized Bed
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Effect of Pore Texture and Surface Chemistry on SO2 Removal by Activated Carbon in Fluidized Bed

机译：孔结构和表面化学性质对流化床中活性炭去除SO2的影响

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摘要

In order to find out the influence factors of SO2 removal efficiency with activated carbons, five kinds of powder activated carbons which have different physicochemical characteristics were choosed. As desulfurizer, every kind of them was used to remove SO2 from flue gas in a fluidized bed reactor. Their physicochemical characteristics were determined by N2 adsorption isotherm at 77 K, elemental analysis and Boehm titration. The results show that the activated carbons prepared from different precursors by different activation methods have different pore texture and surface chemistry. The removal results indicate that there isn't any correlation between the conversion of SO2 and the pore texture such as specific surface area, microspore volume and average pore width. But the conversion increases with increasing the total surface basicity, except for activated carbon CAC which has the most surface basic groups. The more ash content in CAC may result in the lower conversion compared to activated carbon MAC1. Therefore the surface chemistry is the most important influence factor in desulfurization using powder activated carbons in fluidized bed reactor.
机译：为找出活性炭对SO 2 去除效率的影响因素，选择了五种具有不同理化特性的粉状活性炭。作为脱硫剂，在流化床反应器中，每种脱硫剂都用于从烟道气中除去SO 2 。通过N 2 等温线在77 K下的吸附，元素分析和Boehm滴定法测定了它们的理化特性。结果表明，由不同的前体通过不同的活化方法制备的活性炭具有不同的孔结构和表面化学性质。去除结果表明，SO 2 的转化率与孔隙结构如比表面积，微孔体积和平均孔径之间没有任何相关性。但是，转化率随总表面碱度的增加而增加，除了具有最多表面碱性基团的活性炭CAC以外。与活性炭MAC1相比，CAC中更多的灰分含量可能导致较低的转化率。因此，表面化学是在流化床反应器中使用粉末活性炭进行脱硫的最重要的影响因素。

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