CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion

The iron and steel industry is the largest energy-consuming sector in the world. It is responsible for emitting 4–5% of the total anthropogenic CO<sub>2</sub>. As an energy-intensive industry, it is essential that the iron and steel sector accomplishes important carbon emission reduction...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jorge Perpiñán, Manuel Bailera, Luis M. Romeo, Begoña Peña, Valerie Eveloy
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ironmaking power-to-gas iron and steel industry methanation oxy-fuel combustion top gas recycling Technology T
Acceso en línea:	https://doaj.org/article/e72b99a3726a41459b02020d5a7eea81
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:e72b99a3726a41459b02020d5a7eea81
record_format	dspace
spelling	oai:doaj.org-article:e72b99a3726a41459b02020d5a7eea812021-11-11T15:53:32ZCO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion10.3390/en142170901996-1073https://doaj.org/article/e72b99a3726a41459b02020d5a7eea812021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7090https://doaj.org/toc/1996-1073The iron and steel industry is the largest energy-consuming sector in the world. It is responsible for emitting 4–5% of the total anthropogenic CO<sub>2</sub>. As an energy-intensive industry, it is essential that the iron and steel sector accomplishes important carbon emission reduction. Carbon capture is one of the most promising alternatives to achieve this aim. Moreover, if carbon utilization via power-to-gas is integrated with carbon capture, there could be a significant increase in the interest of this alternative in the iron and steel sector. This paper presents several simulations to integrate oxy-fuel processes and power-to-gas in a steel plant, and compares gas productions (coke oven gas, blast furnace gas, and blast oxygen furnace gas), energy requirements, and carbon reduction with a base case in order to obtain the technical feasibility of the proposals. Two different power-to-gas technology implementations were selected, together with the oxy blast furnace and the top gas recycling technologies. These integrations are based on three strategies: (i) converting the blast furnace (BF) process into an oxy-fuel process, (ii) recirculating blast furnace gas (BFG) back to the BF itself, and (iii) using a methanation process to generate CH<sub>4</sub> and also introduce it to the BF. Applying these improvements to the steel industry, we achieved reductions in CO<sub>2</sub> emissions of up to 8%, and reductions in coal fuel consumption of 12.8%. On the basis of the results, we are able to conclude that the energy required to achieve the above emission savings could be as low as 4.9 MJ/kg CO<sub>2</sub> for the second implementation. These values highlight the importance of carrying out future research in the implementation of carbon capture and power-to-gas in the industrial sector.Jorge PerpiñánManuel BaileraLuis M. RomeoBegoña PeñaValerie EveloyMDPI AGarticleironmakingpower-to-gasiron and steel industrymethanationoxy-fuel combustiontop gas recyclingTechnologyTENEnergies, Vol 14, Iss 7090, p 7090 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ironmaking power-to-gas iron and steel industry methanation oxy-fuel combustion top gas recycling Technology T
spellingShingle	ironmaking power-to-gas iron and steel industry methanation oxy-fuel combustion top gas recycling Technology T Jorge Perpiñán Manuel Bailera Luis M. Romeo Begoña Peña Valerie Eveloy CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion
description	The iron and steel industry is the largest energy-consuming sector in the world. It is responsible for emitting 4–5% of the total anthropogenic CO<sub>2</sub>. As an energy-intensive industry, it is essential that the iron and steel sector accomplishes important carbon emission reduction. Carbon capture is one of the most promising alternatives to achieve this aim. Moreover, if carbon utilization via power-to-gas is integrated with carbon capture, there could be a significant increase in the interest of this alternative in the iron and steel sector. This paper presents several simulations to integrate oxy-fuel processes and power-to-gas in a steel plant, and compares gas productions (coke oven gas, blast furnace gas, and blast oxygen furnace gas), energy requirements, and carbon reduction with a base case in order to obtain the technical feasibility of the proposals. Two different power-to-gas technology implementations were selected, together with the oxy blast furnace and the top gas recycling technologies. These integrations are based on three strategies: (i) converting the blast furnace (BF) process into an oxy-fuel process, (ii) recirculating blast furnace gas (BFG) back to the BF itself, and (iii) using a methanation process to generate CH<sub>4</sub> and also introduce it to the BF. Applying these improvements to the steel industry, we achieved reductions in CO<sub>2</sub> emissions of up to 8%, and reductions in coal fuel consumption of 12.8%. On the basis of the results, we are able to conclude that the energy required to achieve the above emission savings could be as low as 4.9 MJ/kg CO<sub>2</sub> for the second implementation. These values highlight the importance of carrying out future research in the implementation of carbon capture and power-to-gas in the industrial sector.
format	article
author	Jorge Perpiñán Manuel Bailera Luis M. Romeo Begoña Peña Valerie Eveloy
author_facet	Jorge Perpiñán Manuel Bailera Luis M. Romeo Begoña Peña Valerie Eveloy
author_sort	Jorge Perpiñán
title	CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion
title_short	CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion
title_full	CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion
title_fullStr	CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion
title_full_unstemmed	CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion
title_sort	co<sub>2</sub> recycling in the iron and steel industry via power-to-gas and oxy-fuel combustion
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e72b99a3726a41459b02020d5a7eea81
work_keys_str_mv	AT jorgeperpinan cosub2subrecyclingintheironandsteelindustryviapowertogasandoxyfuelcombustion AT manuelbailera cosub2subrecyclingintheironandsteelindustryviapowertogasandoxyfuelcombustion AT luismromeo cosub2subrecyclingintheironandsteelindustryviapowertogasandoxyfuelcombustion AT begonapena cosub2subrecyclingintheironandsteelindustryviapowertogasandoxyfuelcombustion AT valerieeveloy cosub2subrecyclingintheironandsteelindustryviapowertogasandoxyfuelcombustion
_version_	1718433020222898176

CO<sub>2</sub> Recycling in the Iron and Steel Industry via Power-to-Gas and Oxy-Fuel Combustion

Ejemplares similares