Energy and exergy analysis of hydrogen production from ammonia decomposition systems using non-thermal plasma
Energy and exergy analysis of hydrogen production from ammonia decomposition systems using non-thermal plasma
复制标题
DOI：
10.1016/j.ijhydene.2020.08.249
复制
发表时间：
2021-08-04
影响因子：
7.2
通讯作者：
Hayakawa, Yukio
中科院分区：
文献类型：
--
作者：
El-Shafie, Mostafa;Kambara, Shinji;Hayakawa, Yukio
本研究对三种介质阻挡放电等离子体（DBD）氨分解制氢系统的能量和火用效率进行了比较评价。采用厚度为20 μ m的Pd-Cu40%膜在圆柱形质膜反应器（PMR）中分离氢气，在第二体系（CR-PMR）中加入预催化反应器（CR），填充2%Ru/Al2O3的催化材料，将CR温度提高到450℃。在第三种制氢系统（PMR）中，在PMR中加入sa - 600a型沸石材料，以提高氢通过Pd-Cu膜的渗透率。在CR-CPMR体系中，等离子体与沸石材料的结合提高了制氢速率。PMR、CR-PMR、CR-CPMR或催化PMR的产氢率分别为2.66%、81.6%和96.6%。结果表明，CR的加入提高了系统的能效，但由于系统不可逆性的影响，各氨分解系统的火用效率值仍然较低。PMR、CR-PMR和CR-CPMR的最大能效值分别为0.8、16.1%和44.1%，最大火用效率值分别为0.156、4.91和6.344%。采用改性体系后，所有NH3分解体系的火能破坏率仍然较高。随着进料氨流量的增加，耗竭系数增大，而在相同流量下，可持续性指数减小。此外，由于火能破坏率高，PMR系统的损耗因子结果高于其他系统。(C) 2020氢能源出版有限责任公司由爱思唯尔有限公司出版版权所有。
In the current study, the energy and exergy efficiencies of three hydrogen production systems from ammonia decomposition using dielectric barrier discharge plasma (DBD) were comparatively evaluated. The hydrogen gas was separated in a cylindrical plasma membrane reactor (PMR) using the Pd-Cu40% membrane with a thickness of 20 mu m. The pre-catalytic reactor (CR) is added to the second system (CR-PMR), additionally, the CR is filled with the catalytic material type of 2%Ru/Al2O3 and the CR temperature is raised to 450 degrees C. Furthermore, the zeolite material type of SA-600 A was added to the PMR in the third H-2 production system (PMR) to enhance the hydrogen permeation through the Pd-Cu membrane. The hydrogen production rate was enhanced by combining the plasma and zeolite material in the third system (CR-CPMR). Moreover, the maximum obtained hydrogen production rates were 2.66, 81.6, and 96.6% in PMR, CR-PMR, and CR-CPMR or catalytic PMR, respectively. Also, it was observed that the energy efficiency increased by adding the CR to the system, while, the exergy efficiency values of all ammonia decomposition systems were still low due to the effect of system irreversibility. Additionally, the maximum energy efficiencies values were 0.8, 16.1, 44.1%, while the maximum exergy efficiencies values were 0.156, 4.91, and 6.344% for PMR, CR-PMR, and CR-CPMR, respectively. The exergy destruction rate of all NH3 decomposition systems was still high although using the modified systems. The depletion factor is enhanced with the feeding ammonia flow rate increased while the sustainability index decreased at the same flow rates. Moreover, it was seen that the depletion factor results of PMR only were higher than other systems due to the exergy destruction rate was high. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.