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论文类型：期刊论文

发表时间：2010-08-01

发表刊物：CHEMICAL ENGINEERING AND PROCESSING

收录刊物：SCIE、EI、Scopus

卷号：49

期号：8

页面范围：859-865

ISSN号：0255-2701

关键字：Ferrous sulfate; Flue gas desulfurization; Polymeric ferric sulfate; Performance

摘要：A process for flue gas desulfurization (FGD) with simultaneous polymeric ferric sulfate (PFS) production was investigated, using a ferrous sulfate (FeSO4) solution as the absorbent, sulfur dioxide (SO2) in flue gas as the raw material and sodium chlorate (NaClO3) as the oxidant. The results indicate that SO2 removal efficiency in a packed column could be maintained at a high level, with an average value of more than 95% during experiments. Liquid PFS that met established quality standard was produced simultaneously. Meanwhile, the solid PFS by-products would be obtained in a spray-drying column due to the high temperature inlet flue gas and its quality parameters were determined. The liquid and solid PFS by-products were used to treat three types of wastewater, and it is found that two types of synthesized PFS were close or better than commercially available solid PFS for chemical oxygen demand (COD) removal and the performance of liquid PFS was found to be superior to that of solid PFS. (c) 2010 Elsevier B.V. All rights reserved.