摘要
提出了一种烟气脱硫新工艺.实验在无其他催化剂条件下进行,FeSO4为脱硫吸收液,脱硫过程中加入铁屑以实现高脱硫率和回收硫的目的.对比实验发现加入铁屑可显著提高SO2脱除效率.连续运行实验结果表明,脱硫率与吸收液pH的变化同步.吸收液中总铁物质的量浓度随时间的变化及初始FeSO4物质的量浓度对脱硫率和吸收液pH的影响显示,在保持较高脱硫率的同时,制取高浓度FeSO4溶液是可行的.并调查了吸收温度、液气比、空塔气速和SO2入口质量浓度对脱硫率和吸收液pH的影响.
A new method of flue gas desulfurization is reported. FeSO_4 solution is used to remove sulfur dioxide without other catalyst. Scrap iron is deposited during desulfurization process in order to achieve sulfur recovery and higher SO_2 removal efficiency. Contrastive experiments demonstrate that SO_2 removal efficiency is improved obviously when scrap iron is added. The continuous experiment shows that the change of SO_2 removal efficiency and absorbent pH is synchronous. Moreover, the change of total iron molar concentration in absorbent with time and the effect of initial FeSO_4 molar concentration on SO_2 removal efficiency and absorbent pH indicate that SO_2 removal efficiency remains higher; meanwhile, higher concentration FeSO_4 solution can be gained. Finally, the SO_2 inlet mass concentration, liquid-gas ratio, superficial gas speed and absorption temperature are studied as parameters affecting the removal efficiency of sulfur dioxide from flue gas and absorbent pH.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2004年第1期60-64,共5页
Journal of Dalian University of Technology