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Application of sorption enhanced water gas shift for carbon capture in integrated steelworks

  • Matteo Gazzani*
  • , Matteo Romano
  • , Giampaolo Manzolini
  • *Corresponding author for this work
  • Energy Department
  • Polytechnic University of Milan

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

In integrated steelworks a large fraction of total CO2 is emitted from the power plant, where carbonrich blast furnace gas (BFG) is burned to produce electricity by means of a steam cycle or a gas-steam combined cycle. The aim of the present paper is to assess the potential of Sorption Enhanced Water Gas Shift (SEWGS) process for CO2 capture from blast furnace gas. Firstly, a reference combined cycle applied to blast furnace steel plant is defined. Mass flow rate and composition of the steel plant off-gas used as fuel in the combined cycle have been derived from a large integrated steel plant. Then, the application of the SEWGS process is investigated and compared to a reference monoethanolamine (MEA)-based post-combustion absorption option. Two different SEWGS plant layouts are proposed together with two different sorbents. SEWGS achieves 85% of CO2 avoided with electric efficiency of 39% with the advanced sorbent.

Original languageEnglish
Pages (from-to)7125-7133
Number of pages9
JournalEnergy Procedia
Volume37
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Blast furnace
  • CO capture
  • CO capture for industrial processes
  • Integrated steelworks
  • SEWGS

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