泥磷乳浊液联合磷矿浆液相脱硝  

Phosphorus sludge emulsions combined with phosphate ore slurry for liquid phase denitration

作　　者：李紫珍 覃岭 宁平[2] 张曼 王访 刘天成 贾丽娟 LI Zizhen;QIN Ling;NING Ping;ZHANG Man;WANG Fang;LIU Tiancheng;JIA Lijuan(Key Laboratory of Comprehensive Utilization of Mineral Resources in Ethnic Regions,Key Laboratory of Resource Clean Conversion in Ethnic Regions,Education Department of Yunnan,School of Chemistry and Environment,Yunnan Minzu University,Kunming 650500,China;College of Environmental Science and Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]云南民族大学化学与环境学院云南省高校民族地区资源清洁转化重点实验室民族地区矿产资源综合利用重点实验室,昆明650500 [2]昆明理工大学环境科学与工程学院,昆明650500

出　　处：《环境工程学报》2018年第11期3177-3184,共8页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51568067);云南省应用基础研究项目(2016FB100)

摘　　要：根据当前一些湿法脱硝技术在燃煤烟气净化中的应用及研究进展,降低湿法脱硝技术的成本是研究的关键,一些价格低廉的吸收液的选择是优先考虑的对象,为此,采用泥磷乳浊液联合磷矿浆进行脱硝效率实验,通过在磷矿浆中添加泥磷,提高了磷矿浆体系的脱硝效率。实验条件主要从泥磷与磷矿的质量比、反应温度、含氧量、烟气流量方面来控制。结果表明,在实验最佳条件下,即泥磷与磷矿的质量比2:5,反应温度60℃,含氧量21%,烟气流量0.3 L·min^(-1),泥磷乳浊液联合磷矿浆液相脱硝体系,脱硝率80%以上可保持240 min以上。According to the current application and research progress of some wet denitration technologies in coal gas purification,the technology cost is the key point of all study.Low-cost absorbents are the preferred using phosphorus sludge emulsions combined with phosphate ore slurry,and the denitrification efficiency of choice for the industrial processes.Therefore,a series of denitrification efficiency experiments were conducted phosphate slurry system was improved by adding phosphorus sludge into phosphate slurry.The influence of the parameters such as mass ratio of mud phosphorus and phosphate rock,reaction temperature,oxygen content,and flue gas flow rate on the denitrification efficiency were investigated in this experiment.The results showed that under the optimum conditions,the mass ratio of sludge to phosphate rock was 2：5,the reaction temperature was 60℃,the oxygen content was21%and the flue gas flow rate was 0.3 L·min（-1）,the denitrification rate of more than 80%can maintained for more than 240 minutes.

关 键 词：磷矿浆 泥磷 液相 脱硝 

分 类 号：X751[环境科学与工程—环境工程]