Modelling of Methanol Synthesis: Improving Hydrogen Utilisation

Hydrogen is a key component in the methanol (MeOH) synthesis process. It affects both the environmental and economic performance, since renewable hydrogen (usually produced by electrolysis) is the most expensive component of the process. The addition of renewable hydrogen improves the carbon balance...

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Autores principales:	Michael Bampaou, Alexios-Spyridon Kyriakides, Kyriakos Panopoulos, Panos Seferlis, Spyridon Voutetakis
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/a3fb1829cd174ec79bea1d267f348ccc
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spelling	oai:doaj.org-article:a3fb1829cd174ec79bea1d267f348ccc2021-11-15T21:47:29ZModelling of Methanol Synthesis: Improving Hydrogen Utilisation10.3303/CET21881552283-9216https://doaj.org/article/a3fb1829cd174ec79bea1d267f348ccc2021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11948https://doaj.org/toc/2283-9216Hydrogen is a key component in the methanol (MeOH) synthesis process. It affects both the environmental and economic performance, since renewable hydrogen (usually produced by electrolysis) is the most expensive component of the process. The addition of renewable hydrogen improves the carbon balance of the process but necessitates the planning of a suitable strategy to account for the stochastic nature of renewable energy and the respective costs. For this reason, the focus of this work is the efficient hydrogen utilization in contrast to most of the past literature works that mainly focus on the conversion of the carbonaceous feedstock. Several operating parameters such as the extent of recycling, operating temperature and pressure, stoichiometric number, inlet temperature and total mass flow per tube affect the methanol yield, carbon conversion and hydrogen consumption of the process. The scope of this work is to provide insight on the effect of those parameters on the efficient hydrogen utilisation using a methanol synthesis modelling tool. The findings of this study showed that hydrogen utilisation could be considerably improved if operating at certain conditions. Lower stoichiometric numbers and mass flows per tube, inlet and cooling temperatures up to 510 K and higher operating pressures could reduce the required hydrogen per produced methanol unit. Especially the employment of recycling, could lead to substantial reduction of the associated hydrogen requirements. In particular, recycling 50 % of the residual off-gases could lead to 10 % less fresh hydrogen requirements and 90 % recycling results to 40 % less hydrogen for the production of the same amount of methanol.Michael BampaouAlexios-Spyridon KyriakidesKyriakos PanopoulosPanos SeferlisSpyridon VoutetakisAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Michael Bampaou Alexios-Spyridon Kyriakides Kyriakos Panopoulos Panos Seferlis Spyridon Voutetakis Modelling of Methanol Synthesis: Improving Hydrogen Utilisation
description	Hydrogen is a key component in the methanol (MeOH) synthesis process. It affects both the environmental and economic performance, since renewable hydrogen (usually produced by electrolysis) is the most expensive component of the process. The addition of renewable hydrogen improves the carbon balance of the process but necessitates the planning of a suitable strategy to account for the stochastic nature of renewable energy and the respective costs. For this reason, the focus of this work is the efficient hydrogen utilization in contrast to most of the past literature works that mainly focus on the conversion of the carbonaceous feedstock. Several operating parameters such as the extent of recycling, operating temperature and pressure, stoichiometric number, inlet temperature and total mass flow per tube affect the methanol yield, carbon conversion and hydrogen consumption of the process. The scope of this work is to provide insight on the effect of those parameters on the efficient hydrogen utilisation using a methanol synthesis modelling tool. The findings of this study showed that hydrogen utilisation could be considerably improved if operating at certain conditions. Lower stoichiometric numbers and mass flows per tube, inlet and cooling temperatures up to 510 K and higher operating pressures could reduce the required hydrogen per produced methanol unit. Especially the employment of recycling, could lead to substantial reduction of the associated hydrogen requirements. In particular, recycling 50 % of the residual off-gases could lead to 10 % less fresh hydrogen requirements and 90 % recycling results to 40 % less hydrogen for the production of the same amount of methanol.
format	article
author	Michael Bampaou Alexios-Spyridon Kyriakides Kyriakos Panopoulos Panos Seferlis Spyridon Voutetakis
author_facet	Michael Bampaou Alexios-Spyridon Kyriakides Kyriakos Panopoulos Panos Seferlis Spyridon Voutetakis
author_sort	Michael Bampaou
title	Modelling of Methanol Synthesis: Improving Hydrogen Utilisation
title_short	Modelling of Methanol Synthesis: Improving Hydrogen Utilisation
title_full	Modelling of Methanol Synthesis: Improving Hydrogen Utilisation
title_fullStr	Modelling of Methanol Synthesis: Improving Hydrogen Utilisation
title_full_unstemmed	Modelling of Methanol Synthesis: Improving Hydrogen Utilisation
title_sort	modelling of methanol synthesis: improving hydrogen utilisation
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/a3fb1829cd174ec79bea1d267f348ccc
work_keys_str_mv	AT michaelbampaou modellingofmethanolsynthesisimprovinghydrogenutilisation AT alexiosspyridonkyriakides modellingofmethanolsynthesisimprovinghydrogenutilisation AT kyriakospanopoulos modellingofmethanolsynthesisimprovinghydrogenutilisation AT panosseferlis modellingofmethanolsynthesisimprovinghydrogenutilisation AT spyridonvoutetakis modellingofmethanolsynthesisimprovinghydrogenutilisation
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Modelling of Methanol Synthesis: Improving Hydrogen Utilisation

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