学术论文

      双碱法烧结烟气脱硫中亚硫酸钙的氧化

      Oxidation of calcium sulfite in dual alkali flue gas desulfurization

      摘要:
      利用双碱法进行烧结烟气脱硫过程中,脱硫副产物亚硫酸钙的氧化是工艺中很重要的化学过程.设计实验室实验,模拟工程中亚硫酸钙氧化过程,通过改变反应时间、温度、初始pH值、搅拌强度、曝气量和固含量等,研究亚硫酸钙氧化效率的影响因素及变化规律.添加锰离子作催化剂,研究其对亚硫酸钙的氧化是否有促进作用.结果表明,亚硫酸钙的氧化受反应时间、温度、初始pH值、搅拌强度、曝气量和固含量的影响,且锰离子可以显著促进亚硫酸钙的氧化,并确定了最适合的工艺条件.
      Abstract:
      In the desulfurization process of sintering flue gas by dual alkali,the oxidation of desulfurization by-products,calcium sulfite,is an important chemical process.Laboratory experiments were designed for simulating the oxidation process of calcium sulfite.The influencing factors and change law of the oxidation efficiency of calcium sulfite were investigated by changing the reaction time,temperature,initial pH values,stir intensity,air flow and solid content.It was also studied whether manganese ions as a catalyst have effect on the oxidation.The results show that the oxidation of calcium sulfite is dependent on the reaction time,temperature,initial pH values,stir intensity,air flow and solid content,and manganese ions can obviously promote the oxidation of calcium sulfite.The most suitable process conditions were determined.
      作者单位: 北京科技大学土木与环境工程学院,北京,100083
      刊 名: 北京科技大学学报 ISTICEIPKU
      年,卷(期): 2011, 33(10)
      分类号: X701.3
      机标分类号: X70 TQ0
      在线出版日期: 2012年4月21日