3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit

The production of synthetic natural gas (SNG) via methanation has been demonstrated by experiments in bench scale bubbling fluidized bed reactors. In the current work, we focus on the scale-up of the methanation reactor, and a circulating fluidized bed (CFB) is designed with variable diameter accord...

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Autores principales:	Liyan Sun, Kun Luo, Jianren Fan
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	CO methanation simulation heat transfer circulating fluidized bed Technology T
Acceso en línea:	https://doaj.org/article/481471b2856445b0935a0848e91ac7a2
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spelling	oai:doaj.org-article:481471b2856445b0935a0848e91ac7a22021-11-11T15:53:42Z3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit10.3390/en142170951996-1073https://doaj.org/article/481471b2856445b0935a0848e91ac7a22021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7095https://doaj.org/toc/1996-1073The production of synthetic natural gas (SNG) via methanation has been demonstrated by experiments in bench scale bubbling fluidized bed reactors. In the current work, we focus on the scale-up of the methanation reactor, and a circulating fluidized bed (CFB) is designed with variable diameter according to the characteristic of methanation. The critical issue is the removal of reaction heat during the strongly exothermic process of the methanation. As a result, an interconnected bubbling fluidized bed (BFB) is utilized and connected with the reactor in order to cool the particles and to maintain system temperature. A 3D model is built, and the influences of operating temperature on H<sub>2</sub>, CO conversion and CH<sub>4</sub> yield are evaluated by numerical simulations. The instantaneous and time-averaged flow behaviors are obtained and analyzed. It turns out that the products with high concentrations of CH<sub>4</sub> are received at the CFB reactor outlet. The temperature of the system is kept under control by using a cooling unit, and the steady state of thermal behavior is achieved under the cooling effect of BFB reactor. The circulating rate of particles and the cooling power of the BFB reactor significantly affect the performance of reactor. This investigation provides insight into the design and operation of a scale-up methanation reactor, and the feasibility of the CFB reactor for the methanation process is confirmed.Liyan SunKun LuoJianren FanMDPI AGarticleCO methanationsimulationheat transfercirculating fluidized bedTechnologyTENEnergies, Vol 14, Iss 7095, p 7095 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	CO methanation simulation heat transfer circulating fluidized bed Technology T
spellingShingle	CO methanation simulation heat transfer circulating fluidized bed Technology T Liyan Sun Kun Luo Jianren Fan 3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit
description	The production of synthetic natural gas (SNG) via methanation has been demonstrated by experiments in bench scale bubbling fluidized bed reactors. In the current work, we focus on the scale-up of the methanation reactor, and a circulating fluidized bed (CFB) is designed with variable diameter according to the characteristic of methanation. The critical issue is the removal of reaction heat during the strongly exothermic process of the methanation. As a result, an interconnected bubbling fluidized bed (BFB) is utilized and connected with the reactor in order to cool the particles and to maintain system temperature. A 3D model is built, and the influences of operating temperature on H<sub>2</sub>, CO conversion and CH<sub>4</sub> yield are evaluated by numerical simulations. The instantaneous and time-averaged flow behaviors are obtained and analyzed. It turns out that the products with high concentrations of CH<sub>4</sub> are received at the CFB reactor outlet. The temperature of the system is kept under control by using a cooling unit, and the steady state of thermal behavior is achieved under the cooling effect of BFB reactor. The circulating rate of particles and the cooling power of the BFB reactor significantly affect the performance of reactor. This investigation provides insight into the design and operation of a scale-up methanation reactor, and the feasibility of the CFB reactor for the methanation process is confirmed.
format	article
author	Liyan Sun Kun Luo Jianren Fan
author_facet	Liyan Sun Kun Luo Jianren Fan
author_sort	Liyan Sun
title	3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit
title_short	3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit
title_full	3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit
title_fullStr	3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit
title_full_unstemmed	3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit
title_sort	3d unsteady simulation of a scale-up methanation reactor with interconnected cooling unit
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/481471b2856445b0935a0848e91ac7a2
work_keys_str_mv	AT liyansun 3dunsteadysimulationofascaleupmethanationreactorwithinterconnectedcoolingunit AT kunluo 3dunsteadysimulationofascaleupmethanationreactorwithinterconnectedcoolingunit AT jianrenfan 3dunsteadysimulationofascaleupmethanationreactorwithinterconnectedcoolingunit
_version_	1718432977742987264

3D Unsteady Simulation of a Scale-Up Methanation Reactor with Interconnected Cooling Unit

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