烟气飞灰在θ环填料塔中对单乙醇胺溶液脱除CO_(2)传质性能的影响  

Effect of Fly Ash in Flue Gas on Mass Transfer Performance for CO_(2)Removal Using MEA Solution in a Randomθ-ring Packed Tower

作　　者：谢文霞 涂春民 张军[3] Xie Wenxia;Tu Chunmin;Zhang Jun(Shaanxi Energy Institute,Shaanxi,712000;Shaanxi Investment Group Co.,Ltd.,Shaanxi,710061;School of Energy&Environment,Southeast University,Jiangsu,210096)

机构地区：[1]陕西能源职业技术学院,陕西712000 [2]陕西投资集团股份有限公司,陕西710061 [3]东南大学能源与环境学院,江苏210096

出　　处：《当代化工研究》2023年第6期31-33,共3页Modern Chemical Research

基　　金：陕西省教育厅科研计划项目“电厂烟气飞灰对有机胺吸收剂脱除CO_(2)影响的研究”(项目编号:21JK0580);陕西能源职业技术学院项目“低碳清洁能源与智能制造科研创新团队”(项目编号:2021KYTD06)。

摘　　要：本文将烟气飞灰加入液相中,采用小型散堆θ环填料塔分析了飞灰对于单乙醇胺(MEA)溶液脱除CO_(2)传质性能的主要影响规律与机理,着重研究了各种操作参数条件下体积总传质系数K_(G)a_(v)所受飞灰的影响。所得结果显示:在加入飞灰之后,减小了K_(G)a_(v)值;而溶液温度的增加将会影响K_(G)a_(v)值的提高,此外,K_(G)a_(v)受飞灰的负面效应呈现出逐渐提高的趋势;而增大液气比则会使体积总传质系数K_(G)a_(v)线性提高,同时,飞灰的影响则逐步地变弱;增加填料高度,K_(G)a_(v)增加,而飞灰对K_(G)a_(v)的负面影响逐渐增强;在逐渐增大飞灰浓度之后,飞灰对于体积总传质系数K_(G)a_(v)所起的抑制作用也相应增强。The effect laws of fly ash on the mass transfer performance for CO_(2)removal using monoethanolamine(MEA)solution was stud-ied in a small randomθ-ring packed tower.Here the fly ash is introduced directly into the liquid phase.The effect of fly ash on the volumetric over-all mass-transfer coefficient(K_(G)a_(v))under various operating parameters is emphatically studied.The experimental results showed that the fly ash in-troduced in MEA solution can cause the decrease of K_(G)a_(v).Increasing the solution temperature is not conducive to increase K_(G)a_(v),and it is gradually increasing due to the negative effect of fly ash.Increasing the liquid-gas ratio and the packing height will increase K_(G)a_(v)significantly,but the effect of fly ash will gradually weaken under changing the liquid-gas ratio.The negative impact trend is gradually increasing when the packing height and the concentration of fly ash are changed.

关 键 词：单乙醇胺(MEA) 体积总传质系数(K_(G)a_(v)) 烟气飞灰 CO_(2)脱除 影响 

分 类 号：X701[环境科学与工程—环境工程]