为了解决富氧燃烧烟气中NOx对CO2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 utilization of CO2, the absorption of NOx 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 absorptions were simulated using the model to obtain the concentration of gasliquid phase products under different 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 NOx, and HNO3 is the main composition in liquid film.

X701

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