添加聚乙二醇对电厂烟气脱硫剂效率的影响分析  

Analysis on Effects of PEG on Effience of Calcium-based FGD Sorbent

作　　者：陈文华[1] 陈建华[1,2] 赵俊峰[2] 

机构地区：[1]南京工业大学材料科学与工程学院,南京210009 [2]常熟理工学院江苏省新型功能材料重点建设实验室,江苏常熟215500

出　　处：《华东电力》2010年第5期721-724,共4页East China Electric Power

基　　金：江苏省新型功能材料重点实验室开放基金项目(06KFJJ001)

摘　　要：针对钙基烟气脱硫剂分散性差、易团聚、比表面积小的缺点,在消化过程中加入不同量的聚乙二醇(PEG600、1500、2000),对消化产物进行改性。研究结果表明:在搅拌时间30 min、水/灰=1.4∶1(摩尔比)的条件下,PEG600添加量(质量分数)为3%时,消化产物颗粒均匀,平均粒径为9.4μm,比表面积达到21.6m2/g,脱硫率由61%提高到91%。XRD、SEM、FT-IR测试表明,添加PEG后,石灰消化完全,转化率较高,分散性得到改善,说明PEG对氢氧化钙有一定的包覆作用。In the hydrated process,Calcium-based flue gas desulfurization sorbent has poor dispersion,the small surface area and prefers to get group.The hydrated products were modified by adding different amount of PEG（PEG600,1500,2000）.The results showed that with a hydration period of 30min and the water/lime molar ratio 1.4：1,the optimal amount of PEG600 added was 3 wt%,the particle size of hydrated products was uniform with the average particle size 9.4μm,the surface area was 21.6 m2/g,and the desulfurization rate was improved from 61% to 91%.XRD,SEM,FT-IR showed that lime was hydrated completely,lime slaking rate was high and the dispersion was improved,indicating calcium hydroxide was coating with PEG.

关 键 词：钙基脱硫剂 聚乙二醇 二氧化硫 

分 类 号：X701.3[环境科学与工程—环境工程]