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The power of molten salt in methane dry reforming: Conceptual design with a CFD study
Chemical Engineering and Processing: Process Intensification ( IF 3.8 ) Pub Date : 2020-11-16 , DOI: 10.1016/j.cep.2020.108230
Sunggeun Lee , Hankwon Lim

A numerical study of the dry reforming of methane is discussed by applying molten salt as the heat source. A tortuous array of reactors, a reactor with frustum shape and a change in the number of reformer beds immersed in the molten salt are studied. The first observation is that the temperature of the heat source does not drop significantly between the inlet and outlet. This property naturally leads to a methane conversion that is proportional to the length when the catalyst volume is fixed. For a tortuous shape with 12 reactors in series, 0.4 m long each, neither the molten salt temperature nor the methane conversion differed significantly between the first and last reactors. Compared to the gas-type heat source, the molten salt turns out to be a very powerful energy carrier. In addition, we briefly discuss the frustum reactor and the variation in the number of reformer beds immersed in molten salt keeping the amount of catalyst fixed. In general, for the frustum reactor the conversion increases as the radius of the feed input becomes smaller. Finally, the CH4 conversion decreases as the number of reformer bed increases for the variation of the number of reformer beds.



中文翻译:

甲烷干重整中熔融盐的作用:通过CFD研究进行概念设计

以熔融盐为热源,对甲烷干法重整进行了数值研究。研究了曲折排列的反应堆,截头圆锥形的反应堆以及浸入熔融盐中的重整床数量的变化。第一个观察结果是热源的温度在入口和出口之间没有明显下降。该性质自然导致甲烷转化率与固定催化剂量时的长度成正比。对于具有串联的12个反应器(每个长度为0.4 m)的曲折形状,第一个反应器和最后一个反应器之间的熔盐温度和甲烷转化率均无显着差异。与气体型热源相比,熔融盐被证明是一种非常强大的能量载体。此外,我们简要讨论了平截头锥体反应器以及浸入熔融盐中的重整床数量的变化,以保持催化剂的量固定。通常,对于平截头体反应器,转化率随着进料输入的半径变小而增加。最后,CH对于重整床数量的变化,随着重整床数量的增加,4转化率降低。

更新日期:2020-11-16
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