CAJ | 학술논문

鉴于国内缺少有关 NH3-CO2-SO42--H2O 四元体系气液相平衡的数据及模型，采用连续流动鼓泡法测定了 NH3-CO2-SO42--H2O 四元体系在常压、温度为313.15~343.15 K 条件下的气液平衡实验数据，并建立了相应的热力学相平衡模型。实验结果表明在 NH3-CO2-H2O 三元体系中引入 SO42-后，气相 NH3平衡分压降低，CO2平衡分压升高。模型采用改进的 Davies 方程及 Henry 定律进行计算，用 Matlab 中的 fsolve 函数进行编辑求解。模型简洁，计算方便，计算结果与实验数据能够较好地吻合，为涉及 NH3-CO2-SO42--H2O 四元体系的工艺过程研究提供了相应的参考数据和理论依据。
감우국내결소유관 NH3-CO2-SO42--H2O 사원체계기액상평형적수거급모형，채용련속류동고포법측정료 NH3-CO2-SO42--H2O 사원체계재상압、온도위313.15~343.15 K 조건하적기액평형실험수거，병건립료상응적열역학상평형모형。실험결과표명재 NH3-CO2-H2O 삼원체계중인입 SO42-후，기상 NH3평형분압강저，CO2평형분압승고。모형채용개진적 Davies 방정급 Henry 정률진행계산，용 Matlab 중적 fsolve 함수진행편집구해。모형간길，계산방편，계산결과여실험수거능구교호지문합，위섭급 NH3-CO2-SO42--H2O 사원체계적공예과정연구제공료상응적삼고수거화이론의거。
In view of the lack of the vapor-liquid equilibrium(VLE) data and thermodynamic model about the quaternary system of NH3-CO2-SO42--H2O at home, continuous flow bubble method was used in our experiments to measure the VLE data of the quaternary system of NH3-CO2-SO42--H2O under normal pressure with temperature range from 313.15 to 343.15 K, and the corresponding thermodynamic VLE model was established. The experiment results indicate that the partial pressure of NH3 decreases and the partial pressure of CO2 rises when adding SO42- to ternary system of NH3-CO2-H2O. The VLE model was calculated and established by modified Davies equation and Henry's law, the fsolve function in Matlab was adopted to solve the VLE model. The results show that the model is concise and easy to calculated, and the calculation results coincide with the experiment data well, it can prove reference data and theoretical basis for research on the quaternary system of NH3-CO2-SO42--H2O.