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OALib Journal期刊
ISSN: 2333-9721
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碱式硫酸铝解吸脱硫法抑制亚硫酸根氧化的试验
, PP. 101-106
Keywords: 碱式硫酸铝,脱硫,解吸,亚硫酸根,抑制氧化,阻氧剂,对苯二酚,乙醇
Abstract:
为了研究抑制石灰石-石膏湿法烟气脱硫中so2-3氧化为so2-4的不利副反应,配制了铝质量浓度为30g/l、碱度为26%的碱式硫酸铝溶液,分别进行不添加阻氧剂(空白)、添加2种阻氧剂(对苯二酚、乙醇)的so2吸收及解吸效应试验,并分别采用间接碘量法和edta滴定法对溶液中的so2-3和so2-4浓度进行测定。试验结果表明:添加对苯二酚或乙醇均对so2-3氧化为so2-4具有抑制作用;添加对苯二酚的最佳浓度约为4mmol/l,so2-3的氧化量较空白试验减少54%以上;添加乙醇的最佳浓度约为7mmol/l,so2-3的氧化量较空白试验减少63%以上;添加对苯二酚与乙醇均具有提高so2解吸率效应,与空白试验相比,添加4mmol/l对苯二酚或7mmol/l乙醇时,so2解吸率至少提高15%;就抑制氧化效应而言,添加乙醇的效果更好。
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