富氧燃烧烟气加压脱硝的实验与模拟研究  

Experimental and Simulation Study on Pressurized Denitrification Process for Oxygen-enriched Combustion Flue Gas

作　　者：王振 覃祺 刘可 刘敦禹[1] WANG Zhen;QIN Qi;LIU Ke;LIU Dun-yu(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai,China,200093)

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《热能动力工程》2023年第9期87-95,共9页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金(51706143,51976129);上海市自然科学基金(21ZR1444400)。

摘　　要：为了解决富氧燃烧烟气中NO_(x)对CO_(2)资源化利用的影响问题,实验研究了加压条件下鼓泡与液膜反应器中液体对NOx的吸收作用。建立了高压下NOx吸收的传质及动力学耦合模型,利用该模型对鼓泡吸收和液膜吸收进行了模拟,获得了不同压力下气液相产物的浓度,并与实验结果进行了对比。结果表明:气液相产物的实验结果与模拟结果吻合,且模型的氮元素守恒率高于90%;最佳吸收压力为1.5 MPa;吸附在反应器壁面的液膜对于NOx有较强的吸收作用,液膜的成分主要是HNO3。To solve the problem of the influence of NOx in oxygen-enriched combustion flue gas on the u-tilization of CO_(2),the absorption of NO_(x) by liquid in both gas bubbling and gas liquid film reactors under pressurized condition was experimentally investigated.A coupled mass transfer and kinetic model for NOx absorption in a high-pressure bubbling reactor was established.Both gas bubbling and liquid film absorp-tions were simulated using the model to obtain the concentration of gas-liquid phase products under differ-ent pressures,and compared with the experimental results.Results show that the experimental results of gas-liquid phase products agree well with the simulated results,and the nitrogen conservation rate of the model is higher than 90%;the optimal absorption pressure is 1.5 MPa;the liquid film absorbed on the reactor wall has a strong absorption effect on NO_(x),and HNO_(3) is the main composition in liquid film.

关 键 词：富氧燃烧 NOx吸收 高压反应器 数值模拟 

分 类 号：X701[环境科学与工程—环境工程]