Abstract: The hydrogenation and dehydrogenation process simulations are performed upon three kinds of liquid organic hydrogen carrier systems, including toluene-methylcyclohexane, benzene-cyclohexane, and naphthalene-decalin, all with a comparatively low raw material cost.Their process production costs in hydrogenation and dehydrogenation sections are respectively estimated.It is found that the raw material cost is the decisive factor for the capital cost in hydrogenation section, while the capital cost in dehydrogenation section depends on the utilities expense.The unit hydrogen storage price in the naphthalene-decalin system is the lowest among the three ones.The transport cost analysis on the three systems discloses that the naphthalene-decalin system is the lowest.A techno-economic comparison is made between the liquid organic hydrogen carrier system and current mainstream hydrogen storage and transportation methods including hydrogen trailer, liquid hydrogen tanker and hydrogen pipeline.It is found that total hydrogen cost (containing hydrogenation, dehydrogenation and transportation) of 500 km transportation by liquid organic hydrogen carrier is RMB8.86 per kilogram of H2, which is lower than that by hydrogen trailer and liquid hydrogen tanker for the same distance.Therefore, the liquid organic hydrogen carrier system technology is very economical for large-scale long-distance transportation, ocean shipping, and long-term storage of hydrogen energy.
马雪飞, 李宗鸿, 肖植煌, 李平. 有机液体储运氢技术经济分析与比较[J]. 现代化工, 2022, 42(6): 202-205,210.
MA Xue-fei, LI Zong-hong, XIAO Zhi-huang, LI Ping. Techno-economic analysis and comparison of liquid organic hydrogen carrier system. Modern Chemical Industry, 2022, 42(6): 202-205,210.