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NiO and CuO coated monolithic oxygen carriers for chemical looping combustion of methane
Journal of the Energy Institute ( IF 5.7 ) Pub Date : 2020-10-11 , DOI: 10.1016/j.joei.2020.09.004
Yanhui Long , Zhenhua Gu , Shen Lin , Kun Yang , Xing Zhu , Yonggang Wei , Hua Wang , Kongzhai Li

Chemical looping combustion is considered as a new combustion technology which can generate electricity and long-term capture carbon because of its inherent separation of CO2. As a typical gas-solid reaction, the geometric structure of oxygen carriers is closely related to the reaction kinetics. In this work, NiO/cordierite monolithic oxygen carrier and CuO/cordierite monolithic oxygen carrier were prepared by solution combustion method. Comparing the chemical looping combustion performance of pellet oxygen carrier and monolithic oxygen carrier under different flow rates, it is found that the monolithic oxygen carrier has stronger adaptability under large flow rates. In addition, by combining different order of oxygen carriers, it is found that NiO/cordierite monolithic oxygen carrier in front and CuO/cordierite monolithic oxygen carriers in the back can give full play to the advantages of the two parts of oxygen carriers, significantly improve CH4 conversion(>98%) and CO2 selectivity(>97%), and there is no carbon deposition.



中文翻译:

NiO和CuO包覆的整体式氧气载体用于甲烷的化学循环燃烧

化学循环燃烧被认为是一种新的燃烧技术,由于其固有的CO 2分离能力,因此可以发电并长期捕获碳。作为典型的气固反应,氧载体的几何结构与反应动力学密切相关。通过固溶燃烧法制备了NiO /堇青石整体式氧气载体和CuO /堇青石整体式氧气载体。通过比较颗粒氧气载体和整体式氧气载体在不同流量下的化学循环燃烧性能,发现整体式氧气载体在大流量下具有较强的适应性。另外,通过结合不同顺序的载氧体,可以发现前面的NiO /堇青石整体式载氧体和背面的CuO /堇青石整体式载氧体可以充分发挥两部分载氧体的优势,显着提高CH 4转化率(> 98%)和CO2选择性(> 97%),无碳沉积。

更新日期:2020-10-11
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