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Process integration analysis for innovative environmentally friendly recovery and pre-treatment of steel scrap
Scuola Superiore Sant'Anna, Italy.
Scuola Superiore Sant'Anna, Italy.
Scuola Superiore Sant'Anna, Italy.
Scuola Superiore Sant'Anna, Italy.
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2014 (English)In: Chemical Engineering Transactions, ISSN 1974-9791, E-ISSN 2283-9216, Vol. 39, no Special Issue, p. 1051-1056Article in journal (Refereed) Published
Abstract [en]

The use of zinc-coated steel (e.g. galvanized steel) in melting cycles based on Electric Arc Furnaces can increase the production of harmful dust and hazardous air emissions. A process to simultaneously preheat and remove the coating from the scrap surface is presented in this paper. The zinc in coating is removed in the gas phase by acid syngas combustion and collected in a dedicated recovery system. The article describes two possible process routes involving plastic waste pre-treatment, shredded plastic gasification/pyrolysis, scrap preheating and zinc recovery processes. The routes have been modelled in an integrated flowsheet, in order to allow a comprehensive simulation and optimization of the pre-treatment processes.. 

Place, publisher, year, edition, pages
Italian Association of Chemical Engineering - AIDIC , 2014. Vol. 39, no Special Issue, p. 1051-1056
Keywords [en]
Air pollution, Coatings, Electric arcs, Electric furnaces, Energy conservation, Galvanizing, Plastic coatings, Pollution, Recovery, Waste incineration, Waste treatment, Zinc, Zinc coatings, Zinc scrap, Electric arc furnace, Galvanized steels, Pretreatment process, Process integration, Scrap preheating, Simulation and optimization, Syngas combustion, Zinc-coated steel, Steel scrap
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-41090DOI: 10.3303/CET1439176Scopus ID: 2-s2.0-84908093069OAI: oai:DiVA.org:ri-41090DiVA, id: diva2:1377207
Conference
17th Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, PRES 2014; Prague; Czech Republic; 23 August 2014 through 27 August 2014
Available from: 2019-12-11 Created: 2019-12-11 Last updated: 2019-12-11Bibliographically approved

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