中北大学学报（自然科学版）2025，Vol.46Issue(3)：349-358,10.DOI:10.62756/jnuc.issn.1673-3193.2024.11.0004
DETA/环丁砜/水相变吸收剂捕集CO2的动力学
Kinetics of CO2 Capture by DETA/Sulfolane/Aqueous Phase Change Absorbent
摘要
Abstract
According to the double membrane theory,absorption experiments were conducted using a bubble reactor to investigate the reaction kinetics of diethylenetriamine(DETA)solution and its phase change absorbent in the process of absorbing low concentration CO2.The viscosity,CO2 loading,and kinetic parameters were measured,and a kinetic model for decarbonization of phase change absorbent was established.The mass transfer reaction mechanism of the decarbonization process of the absorbent was analyzed through the reaction rate constant,mass transfer rate,and enhancement factor in the model,and its interaction and kinetic characteristics were explored.The results show that sulfolane,as a physical sol-vent,does not participate in the reaction,but increases the physical solubility of CO2 in the solution,pro-mots the rapid reaction between DETA and CO2 in the lean phase,and improves the CO2 absorption rate,absorption load,and reaction activation energy of the absorbent.During the absorption process,DETA and sulfolane promote each other,resulting in a higher CO2 absorption rate and capacity than DETA aqueous solution.The apparent reaction rate constant and enhancement factor of phase change absorbent gradually increase with temperature,and the absorption effect is optimal at 323 K.The esti-mated reaction activation energy is 32.48 kJ/mol.The research results can provide new ideas and meth-ods for optimizing phase change decarbonization agents,and provide theoretical references for industrial applications.关键词
碳捕集/相变吸收剂/动力学/传质/二乙烯三胺/环丁砜Key words
carbon capture/phase change absorbent/kinetics/mass transfer/diethylenetriamine/sulfolane分类
环境科学引用本文复制引用
贾正娜,袁志国,付艺婷,张雅倩,孔哲..DETA/环丁砜/水相变吸收剂捕集CO2的动力学[J].中北大学学报（自然科学版）,2025,46(3):349-358,10.基金项目
山西省自然科学研究面上项目(202203021211098) （202203021211098）
山西省科技成果转化引导专项(202104021301054) （202104021301054）
中北大学研究生科技立项(20231925) （20231925）
