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在使用有机胺捕集CO2的工艺中,胺的降解性质是评价胺的重要因素之一。该文使用不锈钢密闭反应器和强制对流烘箱,在相同CO2负荷条件下分别考察了乙二胺(EDA)、1,2-二胺基丙烷(MEDA)、2-哌啶乙醇(2-PE)、哌嗪/2-氨基-2-甲基-1-丙醇(PZ/AMP)混合溶液在373～423K的热降解过程。除乙二胺外,所有实验的胺类的热降解速率都低于常用的乙醇胺(MEA)的热降解速率。在乙二胺分子上添加空间位阻有助于降低胺的热降解速率。本身具有热稳定结构的胺与其他胺类混合后,其热降解速率可能会提高。
Amine degradability is one of the most important factors in the evaluation of amines in the process of capturing CO2 with organic amines. In this paper, ethylenediamine (EDA), 1,2-diaminopropane (MEDA) and 2-piperidineethanol (2-PE) were investigated under the same CO2 loading conditions using stainless steel closed reactor and forced convection oven, , The thermal degradation process of the piperazine / 2-amino-2-methyl-1-propanol (PZ / AMP) mixed solution at 373 ~ 423K. The thermal degradation rates of all the tested amines except ethylenediamine were lower than those of the commonly used ethanolamine (MEA). Addition of steric hindrance to the ethylenediamine molecule helps to reduce the thermal degradation rate of the amine. Amines that have a thermostable structure, when combined with other amines, may have an increased rate of thermal degradation.