Kinetics and Mechanism of Co2 Absorption into a Novel Biphasic N-Pentanol Solution of 2-Amino-2-Methyl-1-Propanol and Piperazine

作     者：She, Liuxing Peng, Lei Fu, Qiang Cao, Donghua Yuan, Hang Zhu, Tianrong Wang, Tielin Qin, Yuanhang Wu, Zaikun 

作者机构：Key Laboratory of Green Chemical Process Ministry of Education Key Laboratory of Novel Reactor and Chemical Technology of Hubei Province School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Wuhan430073 China Guangdong Key laboratory of Electric Power Equipment Reliability Electric Power Research Institute of Guangdong Power Grid Co. Ltd. Guangzhou510080 China hubei Key Laboratory of Industrial Fume & Dust Pollution Control Jianghan University Wuhan China 

出 版 物：《SSRN》 

年 卷 期：2024年

核心收录：

主　　题：Molar ratio 

摘      要：The absorption kinetic of CO2 into a novel non-aqueous mixture of 2-amino-2-methyl-1-propanol and piperazine was studied at atmospheric pressure. And the effects of AMP / PZ molar ratio, total concentration, absorption temperature, inlet flow rate were discussed, respectively. The results showed that the composite absorbent with AMP / PZ ratio of 6:4 had good effect on CO2 absorption at 293K. Unlike relevant reports at home and abroad, the solubility of CO2 into n-pentanol solution of AMP and PZ was calculated based on solution rule models and relevant data from Aspen Plus. The absorption kinetic of CO2 into non-aqueous composite absorbent was analyzed by a double stirred-cell absorber. It shows the enhancement factor increases with the increasing of total concentration but decrease with the increasing of absorption temperature. The absorption mechanism of CO2 in AMP-PZ-pentanol was determined to be the formation of carbamate by FT-IR, 13C NMR and XRD analysis. Based on the vapor–liquid equilibrium (VLE) theory, the reaction heat of CO2 into phase change absorbent was calculated to be 9.30 ***-1. The results show that the composite absorbent has a lower reaction heat than any single component in it. The desorption experiment of saturated solution shows that the composite absorbent can be completely regenerated in a short period of time, which meets the industrial requirements for CO2 absorbents and will provide a theoretical basis for the further industrial application of this type of absorbent. © 2024, The Authors. All rights reserved.