Hydrogen production by using high temperature waste gas in the steelworks

Tomohiro Akiyama, Nobuhiro Maruoka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper proposes a new thermal energy recovery process of hot gas exhausted from the steelmaking LD converter by utilizing not only latent heat but also endothermic heat of reaction. In this process, the intermittently emitted LD gas was first transferred into continuous, constant-temperature heat source in the form of latent heat in the Phase Change Material (PCM) of copper. Then, the stored heat was supplied to Coke Oven Gas (COG) to induce endothermic reaction of steam reforming of methane. Methanol was finally produced from the obtained gas in the proposed system. A heat and material balance model predicted all operating data of the system and then exergy analysis based on the predicted data was conducted to validate the system theoretically. The results showed that the proposed system has a possibility to produce a large amount of methanol corresponding to 20% of total demand in Japan, with only 28% of - exergy consumption in the conventional method.

Original languageEnglish
Title of host publication2nd International Meeting on Ironmaking and 1st International Symposium on Iron Ore and parallel event - 5th Japan-Brazil Symposium on Dust Processing-Energy-Environment on Metallurgical Industries
Pages579-586
Number of pages8
Publication statusPublished - 2004 Dec 1
Externally publishedYes
Event2nd International Meeting on Ironmaking and 1st International Symposium on Iron Ore and Parallel Event- 5th Japan-Brazil Symposium on Dust Processing-Energy-Environment on Metallurgical Industries - Victoria, espirito Santo, Brazil
Duration: 2004 Sep 122004 Sep 15

Publication series

Name2nd International Meeting on Ironmaking and 1st International Symposium on Iron Ore and Parallel Event- 5th Japan-Brazil Symposium on Dust Processing-Energy-Environment on Metallurgical Industries
Volume1

Other

Other2nd International Meeting on Ironmaking and 1st International Symposium on Iron Ore and Parallel Event- 5th Japan-Brazil Symposium on Dust Processing-Energy-Environment on Metallurgical Industries
CountryBrazil
CityVictoria, espirito Santo
Period04/9/1204/9/15

Keywords

  • Exergy Recovery
  • Latent heat
  • Methanol
  • Reaction heat
  • Steelmaking converter

ASJC Scopus subject areas

  • Engineering(all)

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