FeSO_4水溶液吸收脱硫及其影响因素的研究

Research on A New Desulphurization Process withFeSO_4 Solution as Absorbent

介绍一种以ＦｅＳＯ４·７Ｈ２Ｏ作吸收剂、烟气中ＳＯ２为原料合成污水处理药剂——聚合硫酸铁的新脱硫工艺，克服石灰法脱硫效率低、副产品无市场等缺点．研究了温度、吸收液的回流比、Ｆｅ离子浓度、ｐＨ对脱硫效率影响．实验表明：较高的温度和较高的ｐＨ值有利于提高脱硫效率，铁离子对ＳＯ２有催化作用，回流比应控制在适当的范围之内．

This paper presents a new desulphurization process with FeSO4 and NaClO3 as absorbents and SO2 in flue gases as raw material to synthesize flocculent agent——polymeric ferric sulfate.The effects of temperature,reflux ratio,concentration of ferric and ferrous ions and pH have been studied.Higher temperature and pH as well as proper reflux ratio in absorbing tower are crucial for sulfur removal.Moreover,ferric ions catalyze the oxidation of sulfur dioxide.