Arash Badakhsh Song Dong Hyun Seongeun Moon Jeong, Hyang soo Sohn, Hyun tae Suk Woo Nam Soon Kim, Pyung Hui Seo, Ji Kim, Yongwoo Lee, Jaeyong Woo Choung, Jin Kim, Yong min 2024-01-12T02:34:55Z 2024-01-12T02:34:55Z 2022-07-07 2022-12 1385-8947 https://pubs.kist.re.kr/handle/201004/75917 We introduce a thermally self-sustained reactor concept highly integrated with a heat source to produce hydrogen (H-2) stored in methylcyclohexane (MCH), the liquid organic hydrogen carrier (LOHC). This work has a great potential to promote the use of LOHC for COx-free H-2 production for on-board or mobile applications. To this end, the heat-pipe dehydrogenator, an H-2 burner, and a thermal management module are developed. We initially perform a numerical simulation to optimize reactor wall materials and configuration and experimentally test them to reveal the feasibility of such a highly integrated system to maintain uniform reaction temperature at 320 - 360 degrees C, optimal for MCH dehydrogenation. In the proposed design, the heat required for the reaction is provided by the combustion of a part of released H-2, and transferred via a gas-liquid organic phase-change material (PCM). In the as-developed H-2 generator with 50.4 NLH2/h (equivalent to 138.5 WLHV-basis), we achieve a high reforming efficiency of 80% with an MCH conversion of > 99.7%. We expect the as-developed system to be a stepping stone to expanding the use of LOHC in versatile applications requiring carbon-free H-2 storage and production after further engineering efforts to enhance heat recovery and thermal circulation. English Elsevier BV COX-free LOHC dehydrogenation in a heatpipe reformer highly integrated with a hydrogen burner Article 10.1016/j.cej.2022.137679 1 Chemical Engineering Journal, v.449, no.1 Chemical Engineering Journal 449 1 N scie scopus 000823033400002 Engineering, Environmental Engineering, Chemical Engineering Article MICROCHANNEL REACTOR AMMONIA DESIGN ENERGY LOHC dehydrogenation Hydrogen combustion Autothermal reactor design Phase-change material Heatpipe reformer Heat transfer Thermochemistry