Hydrogen role in the valorization of integrated steelworks process off-gases through methane and methanol syntheses

Research output: Contribution to journalArticleResearchpeer-review

Authors

  • Ismael Matino
  • Stefano Dettori
  • Antonella Zaccara
  • Alice Petrucciani
  • Vincenzo Iannino
  • Valentina Colla
  • Michael Bampaou
  • Kyriakos Panopoulos
  • Katharina Rechberger
  • Sebastian Kolb
  • Alexander Hauser
  • Stéphane Haag
  • Nina Kieberger
  • Przemyslaw Rompalski

External Organisational units

  • Telecommunications, Computer Engineering, and Photonics Institute
  • Centre for Research and Technology Hellas
  • Air Liquide Research & Development
  • Central Mining Institute
  • K1-MET GmbH
  • voestalpine Stahl Linz GmbH
  • Friedrich-Alexander-Universität Erlangen-Nürnberg

Abstract

The valorization of integrated steelworks process off-gases as feedstock for synthesizing methane and methanol is in line with European Green Deal challenges. However, this target can be generally achieved only through process off-gases enrichment with hydrogen and use of cutting-edge syntheses reactors coupled to advanced control systems. These aspects are addressed in the RFCS project i3upgrade and the central role of hydrogen was evident from the first stages of the project. First stationary scenario analyses showed that the required hydrogen amount is significant and existing renewable hydrogen production technologies are not ready to satisfy the demand in an economic perspective. The poor availability of low-cost green hydrogen as one of the main barriers for producing methane and methanol from process off-gases is further highlighted in the application of an ad-hoc developed dispatch controller for managing hydrogen intensified syntheses in integrated steelworks. The dispatch controller considers both economic and environmental impacts in the cost function and, although significant environmental benefits are obtainable by exploiting process off-gases in the syntheses, the current hydrogen costs highly affect the dispatch controller decisions. This underlines the need for big scale green hydrogen production processes and dedicated green markets for hydrogen-intensive industries, which would ensure easy access to this fundamental gas paving the way for a C-lean and more sustainable steel production.

Details

Original languageEnglish
Article number308
Number of pages13
JournalMatériaux et techniques
Volume109.2022
Issue number3-4
DOIs
Publication statusE-pub ahead of print - 4 Mar 2022