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A coke deposition self‐removal TBCC thermal management with multi‐catalyst coating
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-05-04 , DOI: 10.1002/er.5452 Yu Feng 1 , Qinhang Lv 1 , Shiyu Deng 1 , Shuyuan Liu 2 , Yong Cao 1 , Jiang Qin 3
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-05-04 , DOI: 10.1002/er.5452 Yu Feng 1 , Qinhang Lv 1 , Shiyu Deng 1 , Shuyuan Liu 2 , Yong Cao 1 , Jiang Qin 3
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How to mitigate coke and improve heat sink is the critical factor for thermal management system of turbine‐based combined cycle (TBCC). A novel thermal management method using multi‐stage coating structure to mitigate coke and improve heat sink is developed in this study. The multi‐stage coating structure includes catalytic steam reforming (CSR) and catalytic steam gasification (CSG) catalyst coatings. Coke is removed by CSG, which provides coke self‐removal. In addition, the CSG is a strong endothermic reaction, which enables the increase of the chemical heat sink. The numerical study for the multi‐stage coating structure was conducted using a heated channel. Results indicate that the multi‐stage coating structure can reduce coke by 50% and increase chemical heat sink by 50%, when the mass ratio of secondary steam injection is 2%. In addition, it is found by a comparative study that the increase of secondary steam addition is helpful to remove coke and increase chemical heat sink. Both coke production and chemical heat sink are significantly affected by the rate distribution of CSG. The optimal performance of multi‐stage coating structure can be obtained by properly regulating rate distribution of CSG.
中文翻译：
具有多催化剂涂层的焦炭沉积自去除TBCC热管理
如何减轻焦炭并改善散热效果是基于涡轮机的联合循环（TBCC）热管理系统的关键因素。本研究开发了一种使用多级涂层结构减轻焦炭并改善散热的新型热管理方法。多级涂层结构包括催化蒸汽重整（CSR）和催化蒸汽气化（CSG）催化剂涂层。CSG可去除焦炭，CSG可自动去除焦炭。此外，CSG是强吸热反应，可增加化学散热片。使用加热通道进行了多级涂层结构的数值研究。结果表明，当二次注汽的质量比为2％时，多层涂层结构可以减少50％的焦炭并增加50％的化学散热。此外，通过比较研究发现，增加二次蒸汽的加入有助于去除焦炭并增加化学散热器。焦炭产量和化学散热器都受到CSG速率分布的显着影响。通过适当调节CSG的速率分布，可以获得多阶段涂层结构的最佳性能。
更新日期：2020-05-04
中文翻译：
具有多催化剂涂层的焦炭沉积自去除TBCC热管理
如何减轻焦炭并改善散热效果是基于涡轮机的联合循环（TBCC）热管理系统的关键因素。本研究开发了一种使用多级涂层结构减轻焦炭并改善散热的新型热管理方法。多级涂层结构包括催化蒸汽重整（CSR）和催化蒸汽气化（CSG）催化剂涂层。CSG可去除焦炭，CSG可自动去除焦炭。此外，CSG是强吸热反应，可增加化学散热片。使用加热通道进行了多级涂层结构的数值研究。结果表明，当二次注汽的质量比为2％时，多层涂层结构可以减少50％的焦炭并增加50％的化学散热。此外，通过比较研究发现，增加二次蒸汽的加入有助于去除焦炭并增加化学散热器。焦炭产量和化学散热器都受到CSG速率分布的显着影响。通过适当调节CSG的速率分布，可以获得多阶段涂层结构的最佳性能。
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