An evaluation of hydrogen production from the perspective of using blast furnace gas and coke oven gas as feedstocks

Wei-Hsin Chen, Mu Rong Lin, Tzong-Shyng Leu, Shan Wen Du

Research output: Contribution to journalArticle

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Abstract

Blast furnace (BF) is a large-scale reactor for producing hot metal where coke and coal are consumed as reducing agent and fuel, respectively. As a result, a large amount of CO2 is liberated into the atmosphere. The blast furnace gas (BFG) and coke oven gas (COG) from the ironmaking process can be used for H2 production in association with carbon capture and storage (CCS), thereby reducing CO2 emissions. In this study thermodynamic analyses are performed to evaluate the feasibility of H 2 production from BFG and COG. Through the water gas shift reaction (WGSR) of BFG, almost all CO contained in BFG can be converted for H2 production if the steam/CO (S/C) ratio is no less than unity and the temperature is at 200 °C, regardless of whether CO2 is captured or not. The maximum H2 production from WGSR is around 0.21 Nm 3 (Nm3 BFG)-1. Regarding H2 production from COG, a two-stage reaction of partial oxidation (POX) followed by WGSR is carried out. It is found the proper conditions for syngas formation from the POX of COG is at the oxygen/fuel (O/F) ratio of 0.5 and the temperature range of 1000-1750 °C where the maximum syngas yield is 2.83 mol (mol hydrocarbons)-1. When WGSR is subsequently applied, the maximum H2 production from the two-stage reaction can reach 0.83 Nm 3 (Nm3 COG)-1.

Original languageEnglish
Pages (from-to)11727-11737
Number of pages11
JournalInternational Journal of Hydrogen Energy
Volume36
Issue number18
DOIs
Publication statusPublished - 2011 Sep 1

Fingerprint

Coke ovens
coke
ovens
hydrogen production
blasts
Blast furnaces
Hydrogen production
Feedstocks
furnaces
evaluation
Gases
gases
Water gas shift
synthesis gas
shift
water
Oxidation
Carbon capture
Reducing agents
Coke

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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abstract = "Blast furnace (BF) is a large-scale reactor for producing hot metal where coke and coal are consumed as reducing agent and fuel, respectively. As a result, a large amount of CO2 is liberated into the atmosphere. The blast furnace gas (BFG) and coke oven gas (COG) from the ironmaking process can be used for H2 production in association with carbon capture and storage (CCS), thereby reducing CO2 emissions. In this study thermodynamic analyses are performed to evaluate the feasibility of H 2 production from BFG and COG. Through the water gas shift reaction (WGSR) of BFG, almost all CO contained in BFG can be converted for H2 production if the steam/CO (S/C) ratio is no less than unity and the temperature is at 200 °C, regardless of whether CO2 is captured or not. The maximum H2 production from WGSR is around 0.21 Nm 3 (Nm3 BFG)-1. Regarding H2 production from COG, a two-stage reaction of partial oxidation (POX) followed by WGSR is carried out. It is found the proper conditions for syngas formation from the POX of COG is at the oxygen/fuel (O/F) ratio of 0.5 and the temperature range of 1000-1750 °C where the maximum syngas yield is 2.83 mol (mol hydrocarbons)-1. When WGSR is subsequently applied, the maximum H2 production from the two-stage reaction can reach 0.83 Nm 3 (Nm3 COG)-1.",
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An evaluation of hydrogen production from the perspective of using blast furnace gas and coke oven gas as feedstocks. / Chen, Wei-Hsin; Lin, Mu Rong; Leu, Tzong-Shyng; Du, Shan Wen.

In: International Journal of Hydrogen Energy, Vol. 36, No. 18, 01.09.2011, p. 11727-11737.

Research output: Contribution to journalArticle

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AB - Blast furnace (BF) is a large-scale reactor for producing hot metal where coke and coal are consumed as reducing agent and fuel, respectively. As a result, a large amount of CO2 is liberated into the atmosphere. The blast furnace gas (BFG) and coke oven gas (COG) from the ironmaking process can be used for H2 production in association with carbon capture and storage (CCS), thereby reducing CO2 emissions. In this study thermodynamic analyses are performed to evaluate the feasibility of H 2 production from BFG and COG. Through the water gas shift reaction (WGSR) of BFG, almost all CO contained in BFG can be converted for H2 production if the steam/CO (S/C) ratio is no less than unity and the temperature is at 200 °C, regardless of whether CO2 is captured or not. The maximum H2 production from WGSR is around 0.21 Nm 3 (Nm3 BFG)-1. Regarding H2 production from COG, a two-stage reaction of partial oxidation (POX) followed by WGSR is carried out. It is found the proper conditions for syngas formation from the POX of COG is at the oxygen/fuel (O/F) ratio of 0.5 and the temperature range of 1000-1750 °C where the maximum syngas yield is 2.83 mol (mol hydrocarbons)-1. When WGSR is subsequently applied, the maximum H2 production from the two-stage reaction can reach 0.83 Nm 3 (Nm3 COG)-1.

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