除尘脱硝一体化滤料的制备及其性能研究
Study on Preparation and Performance of Integrated Filter Media for Dust Removal and Denitrification
聂孙建 1闫梦良 1梁燕 1杨东 1周冠辰 1王菊 1刘曦明1
作者信息
- 1. 安徽元琛环保科技股份有限公司,安徽合肥 230011
- 折叠
摘要
以硝酸铈、偏钒酸铵等为主要原料,通过加热搅拌混合制备催化剂前驱体浆料,并采用表面浸渍法将浆料负载到基材滤料,通过压延、干燥、煅烧形成除尘脱硝一体化滤料.研究了浸渍方式、过滤风速和负载量对除尘脱硝效率的影响,并验证了滤料的催化剂稳定性、耐磨性能和抗水、抗硫、抗碱、中毒性能.通过SEM、XRD表征分析,结果表明:在二步浸渍法负载滤料负载量为352 g/m2,过滤风速为0.4 m/min时,在160℃～220℃温度区间内,脱硝效率为60％～95％,0.6 MPa的喷吹压力下,表面催化剂损失率仅1.1％.滤料的耐磨性能和过滤性能优于常规滤料(在1 µm粉尘粒径过滤下,过滤效率可达99.87％),具备良好的抗水、抗硫、抗碱金属性能.
Abstract
In this paper,cerium nitrate,ammonium metvanadate,etc.are used as the main raw materials,and the cat-alyst precursor slurry is prepared by heating,stirring and mixing,and the slurry is loaded to the substrate filter materi-al by surface impregnation method,and the integrated filter material for dust removal and denitrification is formed by calenching,drying and calcination.The effects of impregnation method,filtration wind speed and load on the efficiency of dust removal and denitrification were studied,and the catalyst stability,wear resistance and anti-water,anti-sulfur and anti-alkali poisoning properties of the filter material were verified.By SEM and XRD analysis,the results show that the denitration efficiency of two-step impregnation method is 60％～95％when the load of filter material is 352 g/m2 and the filter wind speed is 0.4 m/min.Under the temperature range of 160℃～220℃,the surface catalyst loss rate is only 1.1％under the injection pressure of 0.6 MPa.The filter material has better wear resistance and filtration perfor-mance than the conventional filter material(in 1 μm dust particle size filtration,filtration efficiency can reach 99.87％),with good water,sulfur and alkali metal resistance.
关键词
除尘脱硝一体化/催化剂/PTFE滤料/脱硝效率Key words
integrated dedusting and denitrification/catalyst/PTFE filter material/denitration efficiency引用本文复制引用
基金项目
安徽省合肥市发改委新兴产业专项(第一批)(2019)()
出版年
2024
NETL
NSTL
万方数据