Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction

Yongqi Sun; Zuotai Zhang; Seetharaman Sridhar

doi:10.1007/978-3-319-48769-4_133

Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction

Yongqi Sun, Zuotai Zhang, Seetharaman Sridhar

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Steel slags, untapped at 1450-1650 °C, represent a large potential of energy saving and material recycling in metallurgical industry. Conventionally, the methods used for the heat recovery could be categorized into two types and the chemical methods offered the advantage of combination of multiple industrial sectors and production of the high value syngas. Herein, a novel chemical method was investigated, i.e., gasification reaction in the atmosphere of CO₂ where both raw coal and raw char from coal pyrolysis were employed. Not only the thermodynamics of the gasification process in terms of syngas yields but also the kinetic mechanisms of the char gasification process were analyzed. It was clarified that the slag additions showed a great catalytic effect of the char gasification. Furthermore, the transformation of the iron valence state during the gasification was clarified and the potential of energy saving and emission reduction were estimated.

Original language	English (US)
Title of host publication	Advances in Molten Slags, Fluxes, and Salts
Subtitle of host publication	Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016
Editors	Ramana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, Uday Pal
Publisher	Springer International Publishing AG
Pages	1237-1244
Number of pages	8
ISBN (Print)	9783319486253
DOIs	https://doi.org/10.1007/978-3-319-48769-4_133
State	Published - 2016
Externally published	Yes
Event	10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016 - Seattle, United States Duration: May 22 2016 → May 25 2016

Publication series

Name	Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016

Conference

Conference	10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016
Country/Territory	United States
City	Seattle
Period	5/22/16 → 5/25/16

Keywords

Coal gasification
Heat recovery
Hot steel slags
Kinetic mechanism
Syngas production

ASJC Scopus subject areas

Mechanical Engineering
Mechanics of Materials
Materials Chemistry
Metals and Alloys

Access to Document

10.1007/978-3-319-48769-4_133

Cite this

Sun, Y., Zhang, Z., & Sridhar, S. (2016). Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction. In R. G. Reddy, P. Chaubal, P. C. Pistorius, & U. Pal (Eds.), Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016 (pp. 1237-1244). (Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016). Springer International Publishing AG. https://doi.org/10.1007/978-3-319-48769-4_133

Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction. / Sun, Yongqi; Zhang, Zuotai; Sridhar, Seetharaman.
Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. ed. / Ramana G. Reddy; Pinakin Chaubal; P. Chris Pistorius; Uday Pal. Springer International Publishing AG, 2016. p. 1237-1244 (Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Sun, Y, Zhang, Z & Sridhar, S 2016, Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction. in RG Reddy, P Chaubal, PC Pistorius & U Pal (eds), Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016, Springer International Publishing AG, pp. 1237-1244, 10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016, Seattle, United States, 5/22/16. https://doi.org/10.1007/978-3-319-48769-4_133

Sun Y, Zhang Z, Sridhar S. Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction. In Reddy RG, Chaubal P, Pistorius PC, Pal U, editors, Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. Springer International Publishing AG. 2016. p. 1237-1244. (Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016). doi: 10.1007/978-3-319-48769-4_133

Sun, Yongqi ; Zhang, Zuotai ; Sridhar, Seetharaman. / Integrated heat recovery and material recycling from hot slags : Toward energy saving and emission reduction. Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016. editor / Ramana G. Reddy ; Pinakin Chaubal ; P. Chris Pistorius ; Uday Pal. Springer International Publishing AG, 2016. pp. 1237-1244 (Advances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016).

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title = "Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction",

abstract = "Steel slags, untapped at 1450-1650 °C, represent a large potential of energy saving and material recycling in metallurgical industry. Conventionally, the methods used for the heat recovery could be categorized into two types and the chemical methods offered the advantage of combination of multiple industrial sectors and production of the high value syngas. Herein, a novel chemical method was investigated, i.e., gasification reaction in the atmosphere of CO2 where both raw coal and raw char from coal pyrolysis were employed. Not only the thermodynamics of the gasification process in terms of syngas yields but also the kinetic mechanisms of the char gasification process were analyzed. It was clarified that the slag additions showed a great catalytic effect of the char gasification. Furthermore, the transformation of the iron valence state during the gasification was clarified and the potential of energy saving and emission reduction were estimated.",

keywords = "Coal gasification, Heat recovery, Hot steel slags, Kinetic mechanism, Syngas production",

author = "Yongqi Sun and Zuotai Zhang and Seetharaman Sridhar",

note = "Funding Information: Supports by the National High Technology Research and Development Program of China (863 Program, 2012AA06A114) and Key Projects in the National Science & Technology Pillar Program (2013BAC14B07) are acknowledged. The authors also acknowledge financial support by the Common Development Fund of Beijing and the National Natural Science Foundation of ChinaNSFC (51472006, 51272005 and 51172001). Publisher Copyright: {\textcopyright} 2016 by The Minerals, Metals & Materials Society.; 10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016 ; Conference date: 22-05-2016 Through 25-05-2016",

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N1 - Funding Information: Supports by the National High Technology Research and Development Program of China (863 Program, 2012AA06A114) and Key Projects in the National Science & Technology Pillar Program (2013BAC14B07) are acknowledged. The authors also acknowledge financial support by the Common Development Fund of Beijing and the National Natural Science Foundation of ChinaNSFC (51472006, 51272005 and 51172001). Publisher Copyright: © 2016 by The Minerals, Metals & Materials Society.

PY - 2016

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N2 - Steel slags, untapped at 1450-1650 °C, represent a large potential of energy saving and material recycling in metallurgical industry. Conventionally, the methods used for the heat recovery could be categorized into two types and the chemical methods offered the advantage of combination of multiple industrial sectors and production of the high value syngas. Herein, a novel chemical method was investigated, i.e., gasification reaction in the atmosphere of CO2 where both raw coal and raw char from coal pyrolysis were employed. Not only the thermodynamics of the gasification process in terms of syngas yields but also the kinetic mechanisms of the char gasification process were analyzed. It was clarified that the slag additions showed a great catalytic effect of the char gasification. Furthermore, the transformation of the iron valence state during the gasification was clarified and the potential of energy saving and emission reduction were estimated.

AB - Steel slags, untapped at 1450-1650 °C, represent a large potential of energy saving and material recycling in metallurgical industry. Conventionally, the methods used for the heat recovery could be categorized into two types and the chemical methods offered the advantage of combination of multiple industrial sectors and production of the high value syngas. Herein, a novel chemical method was investigated, i.e., gasification reaction in the atmosphere of CO2 where both raw coal and raw char from coal pyrolysis were employed. Not only the thermodynamics of the gasification process in terms of syngas yields but also the kinetic mechanisms of the char gasification process were analyzed. It was clarified that the slag additions showed a great catalytic effect of the char gasification. Furthermore, the transformation of the iron valence state during the gasification was clarified and the potential of energy saving and emission reduction were estimated.

KW - Coal gasification

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Integrated heat recovery and material recycling from hot slags: Toward energy saving and emission reduction

Abstract

Publication series

Conference

Keywords

ASJC Scopus subject areas

Access to Document

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