酸性气体在石油和天然气工业中的吸收由于其毒性和腐蚀作用而很重要。最近,各种研究人员已经研究了基于水性或有机溶剂的纳米流体作为吸收剂的应用。在这项研究中,利用基于Box-Behnken三级实验设计的响应面方法(RSM),利用单个鼓泡柱来研究水基纳米流体对SO2和CO2吸收过程的影响。考虑到这一点,CO2和SO2分别在充满纳米流体之一的泡罩塔的底部注入:Al2O3-水,SiO2-水,或ZnO-水为每个实验。然后,已经阐明了纳米流体中SO2或CO2的吸收速率。重要参数的影响,包括纳米颗粒的重量分数(NP)(0.01、0.055和0.1wt。%),气液接触时间(150、300和450s),研究了注气喷嘴的直径(0.46、0.57和0.68mm)。结果表明,在ZnO-水纳米流体中观察到两种气体的最大摩尔通量,其次是SiO2-水纳米流体。此外,增加纳米粒子的质量分数和气泡尺寸导致摩尔通量上升。然而,增加气体-液体接触时间导致所述气体的摩尔通量降低。最后,已经提出了一组准确的方程来预测在这项工作中评估的各种纳米流体中SO2和CO2的摩尔通量。
The
absorption of acidic gases in the oil and gas industries is important due to their toxicity and corrosive effects. Recently, the application of nanofluids based on aqueous or organic solvents as absorbents has been examined by a variety of researchers. In this study, a single bubble column was exploited to study the effect of water-based nanofluids on the
absorption processes of SO2 and CO2 using response surface methodology (RSM) based on Box-Behnken three-level experiment design. With this in mind, CO2 and SO2 are separately injected at the bottom of a bubble column filled with one of the nanofluids: Al2O3-water, SiO2-water, or ZnO-water for each experiment. Then, the rate of SO2 or CO2
absorption in the nanofluids has been elucidated. The effect of important parameters including the weight fraction of the nanoparticles (NPs) (0.01, 0.055, and 0.1 wt.%), gas-liquid contact time (150, 300, and 450 s), and the diameter of nozzle for gas injection (0.46, 0.57, and 0.68 mm) have been studied. Results revealed that the maximum molar flux of both gases was observed in the ZnO-water nanofluid, followed by the SiO2-water nanofluid. In addition, increasing the nanoparticle mass fraction and the bubble size causes the molar flux to rise. However, increasing the gas-liquid contact time causes the molar flux of the mentioned gases to decrease. Finally, a set of the accurate equations has been proposed to predict the molar flux of SO2 and CO2 in the various nanofluids assessed in this work.