Intensification technology for absorption process is of interest for the separation of CO₂ from natural gas in the offshore. High frequency ultrasonic absorption technology in batch system has shown remarkable potential for offshore application due to high operating flexibility and mass transfer performance. Therefore, in this work, a high frequency ultrasonic absorption (HiFUA) of CO₂ from natural gas using monoethanolamine is proposed for continuous system to suit the industrial mode of operation. The effect of the operating parameters on the overall mass transfer coefficient was investigated, thus the optimum condition was identified using central composite design coupled with response surface methodology. Based on the results, the optimum condition was found at the gas flow rate of 30 SLPM, liquid flow rate of 0.15 SLPM, pressure of 10 bar and ultrasonic voltage of 30 V, which resulted to maximum mass transfer coefficient of 268.9 mol/kPa.m³.hr. The presence of high frequency ultrasonic irradiation has enhanced the absorption process 7 times higher as compared to the case of without ultrasonic irradiation due to its physical effects which are the acoustic streaming, fountain and atomization. The enhancement in continuous system is lower than the batch system reported in the literature due to the difference in the reactor configuration. Nevertheless, HiFUA has intensified the mass transfer performance 12 times higher as compared to conventional packed bed column for CO₂-MEA system. This work has shown great potential of high frequency ultrasonic irradiation as an intensification technology for CO₂ absorption process.

吸收过程中的强化技术对于从海上天然气中分离CO ₂十分重要。批处理系统中的高频超声吸收技术由于具有很高的操作灵活性和传质性能，已显示出在海上应用的巨大潜力。因此，在这项工作中，CO _2的高频超声吸收（HiFUA）提出了使用单乙醇胺从天然气中提取天然气的连续系统，以适应工业运行模式。研究了操作参数对整体传质系数的影响，从而使用中心复合设计结合响应面方法确定了最佳条件。根据这些结果，可以找到最佳条件，气体流速为30 SLPM，液体流速为0.15 SLPM，压力为10 bar，超声电压为30 V，因此最大传质系数为268.9 mol / kPa。³米.hr。与不进行超声波照射的情况相比，高频超声照射的存在将吸收过程的吸收过程提高了7倍，这是由于其物理效果，例如声流，喷泉和雾化。由于反应器结构的差异，连续系统的增强低于文献报道的间歇系统。尽管如此，与传统的CO ₂ -MEA系统填充床色谱柱相比，HiFUA的传质性能提高了12倍。这项工作显示出高频超声辐射作为CO ₂吸收过程的强化技术的巨大潜力。