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用于生产低碳氢气的甲烷太阳能蒸汽重整过程分析

Process analysis of solar steam reforming of methane for producing low-carbon hydrogen.

作者信息

Shagdar Enkhbayar, Lougou Bachirou Guene, Shuai Yong, Ganbold Enkhjin, Chinonso Ogugua Paul, Tan Heping

机构信息

School of Energy Science and Engineering, Harbin Institute of Technology (HIT) 92 West Dazhi Street Harbin 15001 China.

School of Power Engineering, Mongolian University of Science and Technology (MUST) Ulaanbaatar 14191 Mongolia.

出版信息

RSC Adv. 2020 Mar 27;10(21):12582-12597. doi: 10.1039/c9ra09835f. eCollection 2020 Mar 24.

DOI:10.1039/c9ra09835f
PMID:35497614
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9051220/
Abstract

Regarding the trend of hydrogen-powered fuel cell engine development, hydrogen fuel is undisputedly the next generation renewable and sustainable energy carrier. The steam reforming of methane (SRM) is a field-proven technology for efficient hydrogen production. However, producing low-carbon hydrogen is the most technical challenge related to available hydrogen production technologies. This paper investigated the process analysis of SRM for low-carbon hydrogen production using concentrated solar energy as a heat source. Analysis of the solar SRM is carried out considering the reformate gas and their influencing factors. The operating temperature of 200-1000 °C and the pressure of 1.02-30 bar were considered when the mass ratio of steam-to-methane in feed gas was varied from 1.0 to 4.0. It was found that the composition of reformate gas, hydrogen yield, methane and steam conversion rate, the thermal efficiency of reforming reactor, and volume flow of reformate gas are significantly affected by the operating parameters including temperature, pressure, and the mass ratio of feed gas. Carbon content in the yield of hydrogen produced can be limited by considering the water-gas shift reaction in the SRM process. Besides, the centralized tower type solar concentrating system is selected as the heat source of the SRM process. The effect of solar radiation on the operation performance of the solar SRM process was analyzed. Direct normal irradiation is a key factor affecting the operating performance of the solar SRM process.

摘要

关于氢燃料电池发动机的发展趋势，氢气燃料无疑是下一代可再生且可持续的能源载体。甲烷蒸汽重整（SRM）是一种经实际应用验证的高效制氢技术。然而，生产低碳氢气是现有制氢技术面临的最大技术挑战。本文研究了以聚光太阳能为热源的用于生产低碳氢气的SRM过程分析。考虑重整产物气及其影响因素对太阳能SRM进行了分析。当原料气中蒸汽与甲烷的质量比在1.0至4.0之间变化时，考虑了200 - 1000°C的操作温度和1.02 - 30巴的压力。研究发现，重整产物气的组成、氢气产率、甲烷和蒸汽转化率、重整反应器的热效率以及重整产物气的体积流量受到包括温度、压力和原料气质量比在内的操作参数的显著影响。通过考虑SRM过程中的水煤气变换反应，可以限制所产氢气中的碳含量。此外，选择集中塔式太阳能聚光系统作为SRM过程的热源。分析了太阳辐射对太阳能SRM过程操作性能的影响。直射法向辐照度是影响太阳能SRM过程操作性能的关键因素。

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