调理污泥气化灰对SO_2的吸附特性  

SO_2 Adsorption Characteristics of Conditioned Sewage Sludge Gasification Ash

作　　者：刘洁丽[1,2] 刘欢[1,3] 邢浩轩 胡红云[1] 易琳琳[1] 姚洪[1,3] Liu Jieli Liu Huan Xing Haoxuan Hu Hongyun Yi Linlin Yao Hong(State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China Department of New Energy Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074 [2]浙江大学能源清洁利用国家重点实验室,杭州310027 [3]华中科技大学新能源科学与工程系,武汉430074

出　　处：《燃烧科学与技术》2016年第4期357-363,共7页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51506064;51476065);中央高校科研业务费专项资金资助项目(2016YXMS038)

摘　　要：污泥经芬顿试剂和CaO调理后,其气化灰中残留含铁、含钙物质,使之成为潜在吸附剂.针对污泥灰渣的资源化利用,探究了调理污泥气化灰对SO_2的吸附特性,并量化芬顿试剂和CaO前处理对污泥气化灰吸附特性的影响.特制流化床吸附实验结果表明,600,℃实验温度下,每克复合调理污泥气化灰与CaO调理污泥气化灰对SO_2的硫负载量分别为43.52,mg和49.65,mg.CaO能显著提高污泥气化灰的吸附性能,芬顿试剂对气化灰吸附特性具有一定的促进作用,但由于添加比例少,含铁物质的催化作用相对较弱.XRD图谱表明,高温下以Ca CO3、Ca(OH)2等形式存在的含钙物质,可以有效捕集SO_2并形成CaSO_4.Sewage sludge gasification ash could be a potential sorbent for it contains residual Fe- and Ca-compounds after Fenton’s reagent and CaO conditioning.Aiming at the recycling utilization of sewage sludge ash,the SO2 ad-sorption characteristics of conditioned sewage sludge gasification ash was evaluated,and the impacts of Fenton’s reagent and CaO pretreatment were analyzed quantatively.The tests in a lab-scale fluidized bed reactor show that at 600,℃ the sulfur loading amount of composite conditioned sewage sludge gasification ash and CaO conditioned one is 43.52 mg and 49.65 mg,respectively.It has been discovered that CaO can significantly improve ash desulphuriza-tion ability,while Fenton’s reagent has a slight positive effect on account of low adding quantity.XRD patterns dem-onstrate that the Ca-inorganic content,existing as CaCO3 and Ca（OH）2,can adsorb SO2effectively to form CaSO4,especially at high operating temperature.

关 键 词：调理污泥 气化灰 芬顿试剂 氧化钙 脱硫 

分 类 号：X799.3[环境科学与工程—环境工程]