| 摘要:在间歇式反应器中研究几种常用的商用催化剂HZSM-5-25、HZSM-5-50、γ-Al2O3以及SiO2对单乙醇胺（monoethanolamine，MEA）溶液和MEA+甲基二乙醇胺（N-Methyldiethanolamine， MDEA）混合胺水溶液再生过程的影响。结果表明：HZSM-5-25对MEA水溶液再生过程的催化效果最佳，可使MEA富液瞬时最大CO2解吸速率提升约8.25%，平均解吸速率提升约5.24%；对于MEA+MDEA混合胺吸收剂，叔胺MDEA与CO2反应的碱催化水合机制为反应体系带来了大量的HCO，可以在很大程度上加快CO2的释放，这导致HZSM-5-25催化剂对混合胺溶液再生过程的促进效果显著低于其对单MEA溶液的催化效果，瞬时最大解吸速率仅提高4.91%。 |
| 关键词: 碳捕集 再生能耗 催化剂 混合胺溶液 |
|
| Catalytic Regeneration Study of MEA+MDEA Solution |
| ZHANG Wen,LI Ke,YANG Haoran,HE Zhijun,SHEN Yuhang |
| Guangxi Yuchai Machinery Group Co., Ltd, Yulin 537005, China;Shanghai Qiyao Environmental Technology Co., Ltd., Shanghai 200090, China;Merchant Marine College, Shanghai Maritime University, Shanghai 201306, China |
| Abstract:The effects of several commonly used commercial catalysts，HZSM-5-25，HZSM-5-50，γ-Al2O3 and SiO2，on the regeneration of MEA（monoethanolamine）solution and MEA+ MDEA（N-Methyldiethanolamine MINE）mixed amine aqueous solution were investigated in a batch reactor.The results show that HZSM-5-25 has the best catalytic effect on the regeneration process of MEA aqueous solution，which increases the instantaneous maximum CO2 desorption rate of the MEA-rich solution by about 8.25% and the average desorption rate by about 5.24%；For MEA+MDEA mixed amine absorbent，the base-catalyzed hydration mechanism of tertiary amine MDEA reacting with CO2 brought a large amount of HCO to the reaction system，which accelerates the release of CO2 to a large extent，and results in the catalytic effect of HZSM-5-25 catalyst on the regeneration process of the mixed amine solution being significantly lower than that on single MEA solution， with an increase of 4.91% in the instantaneous maximum desorption rate. |
| Key words: carbon capture regeneration energy consumption catalyst mix amine solution |
