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High temperature agent gasification of microwave pyrolysed chars from Automotive Shredder Residue
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Energy and Furnace Technology.ORCID iD: 0000-0002-1837-5439
2010 (English)In: International Conference on Thermal Treatment Technologies and Hazardous Waste Combustors 2010, 2010, 459-469 p.Conference paper, Published paper (Refereed)
Abstract [en]

Presently, there is a growing need for handling Automobile Shredder Residues - ASR or "car fluff". One of the most promising methods of treatment ASR is pyrolysis. Apart of obvious benefits of pyrolysis: energy and metals recovery, there is serious concern about residues generated from that process which need to be recycled. Unfortunately, not much work has been reported providing solutions for handling pyrolysis waste's streams. The raw light fraction of ASR, containing mainly foam, textiles and light plastics was gravimetrically separated from the rest of ASR, and treated via microwave pyrolysis to generate 11% of gaseous, 30% of liquid and 59% of solid products, respectively. The resulting char has been characterized and gasified with either a pure steam or 3%vol. oxygen at temperatures between 950-750 °C, respectively, in a lab scale, fixed-bed reactor. The external temperature of gas and the mass loss of sample were continuously recorded. The activity of chars was investigated basing on carbon (ash free basis) conversion during gasification and pyrolysis stage. It was found the char activity decreases with the rise of external gas temperature and with the time of the process. No significant differences between the reactions undergoing with steam and oxygen. This abnormal char behaviour might have been caused the by the inhibiting effect of ash, especially alkali metals on char activity or due to deformation of char structure during microwave heating.

Place, publisher, year, edition, pages
2010. 459-469 p.
Keyword [en]
ASR, Char activity, High temperature agent gasification
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-149593Scopus ID: 2-s2.0-77956319447ISBN: 978-161738663-3 (print)OAI: oai:DiVA.org:kth-149593DiVA: diva2:740569
Conference
International Conference on Thermal Treatment Technologies and Hazardous Waste Combustors 2010, 17 May 2010 through 20 May 2010, San Francisco, CA, United States
Note

QC 20140825

Available from: 2014-08-25 Created: 2014-08-25 Last updated: 2014-08-25Bibliographically approved

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Yang, Weihong

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