SO_(2)、CS_(2)和H_(2)S作为绝缘气体SF_(6)的重要分解气体,它们的种类和含量对SF_(6)气体绝缘设备的诊断具有重要意义。文中提出了一种紫外吸收光谱法和最小二乘拟合联用的方法用于SF_(6)分解气体的3组分混合气体定量检测。在实验过程...SO_(2)、CS_(2)和H_(2)S作为绝缘气体SF_(6)的重要分解气体,它们的种类和含量对SF_(6)气体绝缘设备的诊断具有重要意义。文中提出了一种紫外吸收光谱法和最小二乘拟合联用的方法用于SF_(6)分解气体的3组分混合气体定量检测。在实验过程中,发现较高体积分数的SO_(2)和CS_(2)对较低体积分数H_(2)S的体积分数计算存在干扰并且干扰的程度大小与两种气体的体积分数呈正相关。因此,文中获得了干扰气体体积分数较高时H_(2)S体积分数计算的修正公式,可以实现3种气体的准确定量检测,SO_(2)和H_(2)S检测范围为1~10μL/L(part permillion),CS_(2)为30~300μg/m L(part per billion)。文中提供了一种简便高效的检测方法,方便集成于检测设备中,为SF_(6)绝缘设备在线监测提供了技术支撑。展开更多
The effect of the presence of trace SO_(2)in industrial flue gas on the amine-scrubbing-based absorption process for CO_(2)capture has been a matter of concern.This study aimed to investigate the effect of trace SO_(2...The effect of the presence of trace SO_(2)in industrial flue gas on the amine-scrubbing-based absorption process for CO_(2)capture has been a matter of concern.This study aimed to investigate the effect of trace SO_(2)on the CO_(2)capture process using piperazine-based amine absorbents,focusing on SO_(2)-resistance capability,SO_(2)/CO_(2)absorption selectivity,and cyclic stability.The presence of trace SO_(2)not only restrains CO_(2)absorption,but also promotes the formation of carbamate within the piperazine-based amine absorbents.Remarkably,the incorporation of aminoethyl group in piperazine-based amine absorbents can enhance the SO_(2)-resistance capability by promoting the formation of carbamate,while piperazine-based amine absorbents with hydroxyethyl group can promote the formation of bicarbonate to reduce the SO_(2)-resistance capability.The work offers valuable insights into the efficient application of novel amine absorbents for CO_(2)capture from practical industrial flue gas.展开更多
文摘SO_(2)、CS_(2)和H_(2)S作为绝缘气体SF_(6)的重要分解气体,它们的种类和含量对SF_(6)气体绝缘设备的诊断具有重要意义。文中提出了一种紫外吸收光谱法和最小二乘拟合联用的方法用于SF_(6)分解气体的3组分混合气体定量检测。在实验过程中,发现较高体积分数的SO_(2)和CS_(2)对较低体积分数H_(2)S的体积分数计算存在干扰并且干扰的程度大小与两种气体的体积分数呈正相关。因此,文中获得了干扰气体体积分数较高时H_(2)S体积分数计算的修正公式,可以实现3种气体的准确定量检测,SO_(2)和H_(2)S检测范围为1~10μL/L(part permillion),CS_(2)为30~300μg/m L(part per billion)。文中提供了一种简便高效的检测方法,方便集成于检测设备中,为SF_(6)绝缘设备在线监测提供了技术支撑。
基金supported by the Major Science and Technology Project of Anhui Province(201903a07020004)the National Natural Science Foundation of China(22208078)the Fundamental Research Funds for the Central Universities(JZ2023HGTB0226).
文摘The effect of the presence of trace SO_(2)in industrial flue gas on the amine-scrubbing-based absorption process for CO_(2)capture has been a matter of concern.This study aimed to investigate the effect of trace SO_(2)on the CO_(2)capture process using piperazine-based amine absorbents,focusing on SO_(2)-resistance capability,SO_(2)/CO_(2)absorption selectivity,and cyclic stability.The presence of trace SO_(2)not only restrains CO_(2)absorption,but also promotes the formation of carbamate within the piperazine-based amine absorbents.Remarkably,the incorporation of aminoethyl group in piperazine-based amine absorbents can enhance the SO_(2)-resistance capability by promoting the formation of carbamate,while piperazine-based amine absorbents with hydroxyethyl group can promote the formation of bicarbonate to reduce the SO_(2)-resistance capability.The work offers valuable insights into the efficient application of novel amine absorbents for CO_(2)capture from practical industrial flue gas.