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首页> 外文期刊>International journal of hydrogen energy >Autothermal hybridization and controlled production of hydrogen-rich syngas in a molten salt solar gasifier
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Autothermal hybridization and controlled production of hydrogen-rich syngas in a molten salt solar gasifier

机译：熔盐太阳能气化炉中富含富含氢合成气的自热杂交和控制生产

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High efficiency solar steam gasification of biomass is carried out in a prototype molten salt reactor for solar-only and solar-autothermal hybrid operation. Previous demonstration of the prototype 3-kW solar gasifier for steam gasification of cellulose at stoichiometric conditions demonstrated thermal efficiency of 44% during continuous operation at 1200 K. The present work expands the range of operating conditions to consider two challenges. Hybridization between solar and autothermal modes of operation is accomplished by adding oxygen directly to the reactor. Control of the H-2:CO ratio of the product gas is accomplished through in-situ steam shifting. Hybridization stabilized temperatures for variations in radiative input as large as a 30% reduction in power, corresponding to conditions where both sensible and chemical heat demands for the process were fully met by exothermic heat release with no significant challenges. Peak efficiencies and carbon conversion values observed are 45% and 99.5% respectively. The resulting product gas stream composition was shifted from a hydrogen and carbon monoxide ratio of 1:1 with stoichiometric steam delivery to a ratio of 1.7:1 with steam at nine times the stoichiometric amount, only slightly lower than equilibrium predictions. The results demonstrate-very favorable attributes for the molten salt reactor in a continuous fuel production process. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
机译：生物量的高效太阳能蒸汽气化在原型熔融盐反应器中进行，用于太阳能和太阳能 - 自热混合动力操作。前面的示范3-kW太阳能气化器用于蒸汽气化的纤维素在化学计量条件下，在连续操作期间在1200k的连续操作期间展示了44％的热效率。目前的工作扩展了考虑两个挑战的操作条件范围。通过将氧气直接加入反应器来实现太阳能和自热操作模式之间的杂交。通过原位蒸汽换档完成对H-2：产品气体的共比。杂交稳定的温度用于辐射输入的变化，电力减少30％，对应于通过放热热释放完全满足了对该过程的明智和化学热需求的条件，没有重大挑战。观察到的峰效率和碳转化值分别为45％和99.5％。所得产物气流组合物从氢气和一氧化碳比例的蒸汽输送到1.7：1的比例为1.7：1，蒸汽在化学计量的九倍，仅略低于平衡预测。结果表明，在连续燃料生产过程中熔融盐反应器的熔融盐反应器非常有利。 （c）2021氢能量出版物LLC。 elsevier有限公司出版。保留所有权利。

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