Experimental study of the application of a NiO/NiAl2O4 catalyst and a CaO-based synthetic sorbent on the Sorption Enhanced Reforming process
Experimental study of the application of a NiO/NiAl2O4 catalyst and a CaO-based synthetic sorbent on the Sorption Enhanced Reforming process
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DOI：
10.1016/j.ijhydene.2014.10.033
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发表时间：
2015-01
影响因子：
7.2
通讯作者：
Ana L. García-Lario;M. Aznar;I. Martínez;G. Grasa;R. Murillo
中科院分区：
文献类型：
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作者：
Ana L. García-Lario;M. Aznar;I. Martínez;G. Grasa;R. Murillo
合成了CaO基合成脱硫剂和NiO/NiAl 2 O 4催化剂，并在固定床反应器中进行了吸附强化重整（SER）试验。考察了反应温度、水甲烷比（S/C）和吸附剂/催化剂比（Z）对反应的影响。基于SER的装置仿真模型被实现以从热能消耗的角度评估所选择的操作条件是否允许自维持装置。SER测试的最合适的温度是650 °C。在600 °C下，催化剂似乎没有足够的活性，而在700 °C下，导致更长的穿透期。即使在最低S/C比为1.6时也达到SER平衡，获得82体积%的H2纯度(dry基础）。对于SER为基础的工厂模拟开发，1.6的低S/C比允许一个自我维持的工厂，其中所需的能量在煅烧炉中的碳酸钙分解是由燃烧的废气从H2净化装置提供。
A CaO-based synthetic sorbent and a NiO/NiAl2O4catalyst are synthesized and tested under Sorption Enhanced Reforming (SER) conditions in a fixed bed reactor. The effect of temperature, steam-to-methane ratio (S/C) and sorbent-to-catalyst proportion (Z) are studied. A SER based plant simulation model is implemented to evaluate if the operating conditions chosen allow for a self-sustained plant from a thermal energy consumption standpoint.The most appropriate temperature for SER test is 650 °C. At 600 °C the catalyst seems to be not sufficiently active, while at 700 °C, a longer breakthrough period results. SER equilibrium is reached even at the lowestS/Cratio of 1.6, obtaining H2purity of 82 vol.% (dry basis). For the SER based plant simulation developed, the lowS/Cratio of 1.6 allows a self-sustained plant where the energy required in the calciner for CaCO3decomposition is supplied by burning the off-gas from the H2purification unit.