Ultra-pure hydrogen production via ammonia decomposition in a catalytic membrane reactor
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2022-06-08
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Abstract
In this work two alternatives are presented for increasing the purity of hydrogen produced in a membrane reactor for ammonia decomposition. It is experimentally demonstrated that either increasing the thickness of the membrane selective layer or using a small purification unit in the permeate of the membranes, ultra-pure hydrogen can be produced. Specifically, the results show that increasing the membrane thickness above 6 μm ultra-pure hydrogen can be obtained at pressures below 5 bar. A cheaper solution, however, consists in the use of an adsorption bed downstream the membrane reactor. In this way, ultra-pure hydrogen can be achieved with higher reactor pressures, lower temperatures and thinner membranes, which result in lower reactor costs. A possible process diagram is also reported showing that the regeneration of the adsorption bed can be done by exploiting the heat available in the system and thus introducing no additional heat sources.
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Publisher Copyright: © 2022 The Authors
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Ammonia decomposition , Membrane reactor , Hydrogen storage , Hydrogen separation , Hydrogen purification , Ammonia decomposition , Membrane reactor , Hydrogen storage , Hydrogen separation , Hydrogen purification , Renewable Energy, Sustainability and the Environment , Fuel Technology , Condensed Matter Physics , Energy Engineering and Power Technology , SDG 7 - Affordable and Clean Energy , Project ID , info:eu-repo/grantAgreement/EC/H2020/862482/EU/Advanced materials and Reactors for ENergy storage tHrough Ammonia/ARENHA , info:eu-repo/grantAgreement/EC/H2020/862482/EU/Advanced materials and Reactors for ENergy storage tHrough Ammonia/ARENHA , Funding Info , This project receives support from the European Union’s Horizon 2020 research and nnovation under grant agreement No. 862482 (ARENHA project). , This project receives support from the European Union’s Horizon 2020 research and nnovation under grant agreement No. 862482 (ARENHA project).
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Cechetto , V , Di Felice , L , Gutierrez Martinez , R , Arratibel Plazaola , A & Gallucci , F 2022 , ' Ultra-pure hydrogen production via ammonia decomposition in a catalytic membrane reactor ' , International Journal of Hydrogen Energy , vol. 47 , no. 49 , pp. 21220-21230 . https://doi.org/10.1016/j.ijhydene.2022.04.240