Desulfurization of flue gas:: SO2 absorption by an ionic liquid
Desulfurization of flue gas:: SO2 absorption by an ionic liquid
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DOI：
10.1002/anie.200353437
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发表时间：
2004-01-01
影响因子：
16.6
通讯作者：
Huang, J
中科院分区：
文献类型：
--
作者：
Wu, WZ;Han, BX;Huang, J
空气污染已引起全世界越来越多的关注。SO2是主要的大气污染物之一，主要由化石燃料燃烧产生。烟气脱硫（FGD）是目前控制煤和汽油等化石燃料燃烧产生的SO2排放的最有效的技术之一，各种脱硫工艺如湿法、干法和半干法等已被工业上广泛采用。[1]然而，这些方法需要大量的水，并且还需要进一步处理所得废水，或者它们产生副产物如硫酸钙。最近，干法和催化法脱硫由于其经济效益而引起了人们的极大兴趣，[2]通常使用氧化铝上的铜（CuO/Al 2 O3）催化剂吸附剂。但是，这种方法也有一些缺点，例如，烟道气流中的粉尘会存款到吸附剂上并造成堵塞，这影响了脱硫效率，并且在固定床操作中，大量的颗粒会造成高的流动阻力。[3]第一章
Air pollution has been drawing increasing attention throughout the world. SO2, mainly emitted from fossil-fuel combustion, is one of major air pollutants. Up to now, flue-gas desulfurization (FGD) is one of the most effective techniques to control emissions of SO2 from the combustion of fossil fuels, such as coal and petrol. A variety of processes for SO2 control, such as wet FGD, dry FGD, and semidry FGD processes, have been commercially widely adopted.[1] However, these methods require a large amount of water and further treatment of the resultant wastewater is also needed, or they produce by-products such as calcium sulfate. Recently, dry and catalytic methods for SO2 removal have attracted much interest due to their economic benefits,[2] and copper on alumina (CuO/Al2O3) catalyst sorbent is usually used. However, this method has some disadvantages, for example, the dust in the flue stream can deposit onto the sorbent and cause plugging, which affects the desulfurization efficiency, and in a fixed-bed operation, a large volume of pellets can cause high flow resistance.[3]