In order to overcome the drawback of short liquid resistance time in rotating packed bed (RPB), a multi-stage rotating zigzag bed (RZB) was employed to enhance carbon dioxide (CO₂) absorption process with blended aqueous amine solutions containing diethylenetriamine (DETA) + piperazine (PZ) or DETA + 1-methylpiperazine (1-MPZ) as absorbents. The effects of different operating parameters on the CO₂ absorption efficiency, overall gas-phase volumetric mass transfer coefficient (K_Ga) and height of mass transfer unit in the RZB were investigated. Experimental results indicated that increase of the promoter concentration, lean solution flow rate and rotational speed were conducive to gas–liquid mass transfer and CO₂ absorption. It was found that both PZ and 1-MPZ were effective promoters, while PZ exhibited better performance. Meanwhile, comparison of CO₂ absorption performance between one stage and two stages revealed that two stages had higher CO₂ absorption efficiency due to extended residence time of absorbents and CO₂ in the RZB. A comparison with RPB demonstrated that the RZB could achieve higher mass transfer and CO₂ absorption efficiencies with smaller rotor volume and less absorbent consumption. The maximum CO₂ absorption efficiency and K_Ga reached 99.3% at a gas flow rate of 1.5 m³/h and 7.43 kmol/kPa m³ h at an inlet gas CO₂ concentration of 2% respectively in the RZB with DETA + PZ system, suggesting that RZB may be an effective device for CO₂ absorption.

为了克服旋转填充床 (RPB) 液体阻力时间短的缺点，采用多级旋转锯齿形床 (RZB) 来增强二氧化碳 (CO ₂ ) 吸收过程，并与含有二亚乙基三胺 (DETA) 的混合胺水溶液) + 哌嗪 (PZ) 或 DETA + 1-甲基哌嗪 (1-MPZ) 作为吸收剂。研究了不同操作参数对RZB中CO ₂吸收效率、整体气相体积传质系数( K _G a )和传质单元高度的影响。实验结果表明，提高助催化剂浓度、贫溶液流速和转速有利于气液传质和CO ₂吸收。发现PZ和1-MPZ都是有效的促进剂，而PZ表现出更好的性能。同时，一级和二级CO ₂吸收性能的比较表明，由于吸收剂和CO ₂在RZB中的停留时间延长，二级具有更高的CO ₂吸收效率。与 RPB 的比较表明，RZB 可以以更小的转子体积和更少的吸收剂消耗实现更高的传质和 CO ₂吸收效率。在气体流速为1.5 m ³ /h和7.43 kmol/kPa m ^{3 时，} CO ₂吸收效率和K _G a 最大达到99.3%h 在具有 DETA + PZ 系统的 RZB 中分别在 2%的入口气体 CO ₂浓度下，表明 RZB 可能是一种有效的 CO ₂吸收装置。